Release 1.2.0

当有1个以上的co进入queryname,后面的协程有在第1个以后某个的co先执行（第一个已经返回），导致cluster消息乱序

3rd/lpeg/lpcap.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lpcap.h,v 1.2 2015/02/27 17:13:17 roberto Exp $
+** $Id: lpcap.h,v 1.3 2016/09/13 17:45:58 roberto Exp $
 */
 
 #if !defined(lpcap_h)
@@ -11,8 +11,21 @@
 
 /* kinds of captures */
 typedef enum CapKind {
-  Cclose, Cposition, Cconst, Cbackref, Carg, Csimple, Ctable, Cfunction,
-  Cquery, Cstring, Cnum, Csubst, Cfold, Cruntime, Cgroup
+  Cclose,  /* not used in trees */
+  Cposition,
+  Cconst,  /* ktable[key] is Lua constant */
+  Cbackref,  /* ktable[key] is "name" of group to get capture */
+  Carg,  /* 'key' is arg's number */
+  Csimple,  /* next node is pattern */
+  Ctable,  /* next node is pattern */
+  Cfunction,  /* ktable[key] is function; next node is pattern */
+  Cquery,  /* ktable[key] is table; next node is pattern */
+  Cstring,  /* ktable[key] is string; next node is pattern */
+  Cnum,  /* numbered capture; 'key' is number of value to return */
+  Csubst,  /* substitution capture; next node is pattern */
+  Cfold,  /* ktable[key] is function; next node is pattern */
+  Cruntime,  /* not used in trees (is uses another type for tree) */
+  Cgroup  /* ktable[key] is group's "name" */
 } CapKind;
 
 

3rd/lpeg/lpcode.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lpcode.c,v 1.23 2015/06/12 18:36:47 roberto Exp $
+** $Id: lpcode.c,v 1.24 2016/09/15 17:46:13 roberto Exp $
 ** Copyright 2007, Lua.org & PUC-Rio  (see 'lpeg.html' for license)
 */
 
@@ -125,6 +125,27 @@ int tocharset (TTree *tree, Charset *cs) {
 }
 
 
+/*
+** Visit a TCall node taking care to stop recursion. If node not yet
+** visited, return 'f(sib2(tree))', otherwise return 'def' (default
+** value)
+*/
+static int callrecursive (TTree *tree, int f (TTree *t), int def) {
+  int key = tree->key;
+  assert(tree->tag == TCall);
+  assert(sib2(tree)->tag == TRule);
+  if (key == 0)  /* node already visited? */
+    return def;  /* return default value */
+  else {  /* first visit */
+    int result;
+    tree->key = 0;  /* mark call as already visited */
+    result = f(sib2(tree));  /* go to called rule */
+    tree->key = key;  /* restore tree */
+    return result;
+  }
+}
+
+
 /*
 ** Check whether a pattern tree has captures
 */
@@ -134,14 +155,17 @@ int hascaptures (TTree *tree) {
     case TCapture: case TRunTime:
       return 1;
     case TCall:
-      tree = sib2(tree); goto tailcall;  /* return hascaptures(sib2(tree)); */
+      return callrecursive(tree, hascaptures, 0);
+    case TRule:  /* do not follow siblings */
+      tree = sib1(tree); goto tailcall;
     case TOpenCall: assert(0);
     default: {
       switch (numsiblings[tree->tag]) {
         case 1:  /* return hascaptures(sib1(tree)); */
           tree = sib1(tree); goto tailcall;
         case 2:
-          if (hascaptures(sib1(tree))) return 1;
+          if (hascaptures(sib1(tree)))
+            return 1;
           /* else return hascaptures(sib2(tree)); */
           tree = sib2(tree); goto tailcall;
         default: assert(numsiblings[tree->tag] == 0); return 0;
@@ -208,9 +232,9 @@ int checkaux (TTree *tree, int pred) {
 
 /*
 ** number of characters to match a pattern (or -1 if variable)
-** ('count' avoids infinite loops for grammars)
 */
-int fixedlenx (TTree *tree, int count, int len) {
+int fixedlen (TTree *tree) {
+  int len = 0;  /* to accumulate in tail calls */
  tailcall:
   switch (tree->tag) {
     case TChar: case TSet: case TAny:
@@ -220,26 +244,29 @@ int fixedlenx (TTree *tree, int count, int len) {
     case TRep: case TRunTime: case TOpenCall:
       return -1;
     case TCapture: case TRule: case TGrammar:
-      /* return fixedlenx(sib1(tree), count); */
+      /* return fixedlen(sib1(tree)); */
       tree = sib1(tree); goto tailcall;
-    case TCall:
-      if (count++ >= MAXRULES)
-        return -1;  /* may be a loop */
-      /* else return fixedlenx(sib2(tree), count); */
-      tree = sib2(tree); goto tailcall;
+    case TCall: {
+      int n1 = callrecursive(tree, fixedlen, -1);
+      if (n1 < 0)
+        return -1;
+      else
+        return len + n1;
+    }
     case TSeq: {
-      len = fixedlenx(sib1(tree), count, len);
-      if (len < 0) return -1;
-      /* else return fixedlenx(sib2(tree), count, len); */
-      tree = sib2(tree); goto tailcall;
+      int n1 = fixedlen(sib1(tree));
+      if (n1 < 0)
+        return -1;
+      /* else return fixedlen(sib2(tree)) + len; */
+      len += n1; tree = sib2(tree); goto tailcall;
     }
     case TChoice: {
-      int n1, n2;
-      n1 = fixedlenx(sib1(tree), count, len);
-      if (n1 < 0) return -1;
-      n2 = fixedlenx(sib2(tree), count, len);
-      if (n1 == n2) return n1;
-      else return -1;
+      int n1 = fixedlen(sib1(tree));
+      int n2 = fixedlen(sib2(tree));
+      if (n1 != n2 || n1 < 0)
+        return -1;
+      else
+        return len + n1;
     }
     default: assert(0); return 0;
   };
@@ -710,9 +737,10 @@ static void codeand (CompileState *compst, TTree *tree, int tt) {
 
 
 /*
-** Captures: if pattern has fixed (and not too big) length, use
-** a single IFullCapture instruction after the match; otherwise,
-** enclose the pattern with OpenCapture - CloseCapture.
+** Captures: if pattern has fixed (and not too big) length, and it
+** has no nested captures, use a single IFullCapture instruction
+** after the match; otherwise, enclose the pattern with OpenCapture -
+** CloseCapture.
 */
 static void codecapture (CompileState *compst, TTree *tree, int tt,
                          const Charset *fl) {

3rd/lpeg/lpcode.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lpcode.h,v 1.7 2015/06/12 18:24:45 roberto Exp $
+** $Id: lpcode.h,v 1.8 2016/09/15 17:46:13 roberto Exp $
 */
 
 #if !defined(lpcode_h)
@@ -13,7 +13,7 @@
 
 int tocharset (TTree *tree, Charset *cs);
 int checkaux (TTree *tree, int pred);
-int fixedlenx (TTree *tree, int count, int len);
+int fixedlen (TTree *tree);
 int hascaptures (TTree *tree);
 int lp_gc (lua_State *L);
 Instruction *compile (lua_State *L, Pattern *p);
@@ -35,8 +35,6 @@ int sizei (const Instruction *i);
 */
 #define nullable(t)	checkaux(t, PEnullable)
 
-#define fixedlen(t)     fixedlenx(t, 0, 0)
-
 
 
 #endif

3rd/lpeg/lpeg.html

@@ -10,7 +10,7 @@
 </head>
 <body>
 
-<!-- $Id: lpeg.html,v 1.75 2015/09/28 17:17:41 roberto Exp $ -->
+<!-- $Id: lpeg.html,v 1.77 2017/01/13 13:40:05 roberto Exp $ -->
 
 <div id="container">
 	
@@ -577,8 +577,9 @@ It is equivalent to the following grammar in standard PEG notation:
 <h2><a name="captures">Captures</a></h2>
 
 <p>
-A <em>capture</em> is a pattern that creates values
-(the so called <em>semantic information</em>) when it matches.
+A <em>capture</em> is a pattern that produces values
+(the so called <em>semantic information</em>)
+according to what it matches.
 LPeg offers several kinds of captures,
 which produces values based on matches and combine these values to
 produce new values.
@@ -632,10 +633,7 @@ or no value when <code>number</code> is zero.</td></tr>
 </tbody></table>
 
 <p>
-A capture pattern produces its values every time it succeeds.
-For instance,
-a capture inside a loop produces as many values as matched by the loop.
-A capture produces a value only when it succeeds.
+A capture pattern produces its values only when it succeeds.
 For instance,
 the pattern <code>lpeg.C(lpeg.P"a"^-1)</code>
 produces the empty string when there is no <code>"a"</code>
@@ -643,14 +641,20 @@ produces the empty string when there is no <code>"a"</code>
 while the pattern <code>lpeg.C("a")^-1</code>
 does not produce any value when there is no <code>"a"</code>
 (because the pattern <code>"a"</code> fails).
+A pattern inside a loop or inside a recursive structure
+produces values for each match.
 </p>
 
 <p>
 Usually,
-LPeg evaluates all captures only after (and if) the entire match succeeds.
-During <em>match time</em> it only gathers enough information
-to produce the capture values later.
-As a particularly important consequence,
+LPeg does not specify when (and if) it evaluates its captures.
+(As an example,
+consider the pattern <code>lpeg.P"a" / func / 0</code>.
+Because the "division" by 0 instructs LPeg to throw away the
+results from the pattern,
+LPeg may or may not call <code>func</code>.)
+Therefore, captures should avoid side effects.
+Moreover,
 most captures cannot affect the way a pattern matches a subject.
 The only exception to this rule is the
 so-called <a href="#matchtime"><em>match-time capture</em></a>.
@@ -700,6 +704,12 @@ An <em>Outermost</em> capture means that the capture is not inside
 another complete capture.
 </p>
 
+<p>
+In the same way that LPeg does not specify when it evaluates captures,
+it does not specify whether it reuses
+values previously produced by the group
+or re-evaluates them.
+</p>
 
 <h3><a name="cap-cc"></a><code>lpeg.Cc ([value, ...])</code></h3>
 <p>
@@ -806,7 +816,7 @@ all replacements.
 <h3><a name="cap-t"></a><code>lpeg.Ct (patt)</code></h3>
 <p>
 Creates a <em>table capture</em>.
-This capture creates a table and puts all values from all anonymous captures
+This capture returns a table with all values from all anonymous captures
 made by <code>patt</code> inside this table in successive integer keys,
 starting at 1.
 Moreover,
@@ -872,7 +882,8 @@ there is no captured value.
 <p>
 Creates a <em>match-time capture</em>.
 Unlike all other captures,
-this one is evaluated immediately when a match occurs.
+this one is evaluated immediately when a match occurs
+(even if it is part of a larger pattern that fails later).
 It forces the immediate evaluation of all its nested captures
 and then calls <code>function</code>.
 </p>
@@ -1380,13 +1391,13 @@ and the new term for each repetition.
 <h2><a name="download"></a>Download</h2>
 
 <p>LPeg 
-<a href="http://www.inf.puc-rio.br/~roberto/lpeg/lpeg-1.0.0.tar.gz">source code</a>.</p>
+<a href="http://www.inf.puc-rio.br/~roberto/lpeg/lpeg-1.0.1.tar.gz">source code</a>.</p>
 
 
 <h2><a name="license">License</a></h2>
 
 <p>
-Copyright &copy; 2007-2015 Lua.org, PUC-Rio.
+Copyright &copy; 2007-2017 Lua.org, PUC-Rio.
 </p>
 <p>
 Permission is hereby granted, free of charge,
@@ -1424,7 +1435,7 @@ THE SOFTWARE.
 
 <div id="about">
 <p><small>
-$Id: lpeg.html,v 1.75 2015/09/28 17:17:41 roberto Exp $
+$Id: lpeg.html,v 1.77 2017/01/13 13:40:05 roberto Exp $
 </small></p>
 </div> <!-- id="about" -->
 

3rd/lpeg/lpprint.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lpprint.c,v 1.9 2015/06/15 16:09:57 roberto Exp $
+** $Id: lpprint.c,v 1.10 2016/09/13 16:06:03 roberto Exp $
 ** Copyright 2007, Lua.org & PUC-Rio  (see 'lpeg.html' for license)
 */
 
@@ -37,13 +37,13 @@ void printcharset (const byte *st) {
 }
 
 
-static void printcapkind (int kind) {
+static const char *capkind (int kind) {
   const char *const modes[] = {
     "close", "position", "constant", "backref",
     "argument", "simple", "table", "function",
     "query", "string", "num", "substitution", "fold",
     "runtime", "group"};
-  printf("%s", modes[kind]);
+  return modes[kind];
 }
 
 
@@ -73,13 +73,12 @@ void printinst (const Instruction *op, const Instruction *p) {
       break;
     }
     case IFullCapture: {
-      printcapkind(getkind(p));
-      printf(" (size = %d)  (idx = %d)", getoff(p), p->i.key);
+      printf("%s (size = %d)  (idx = %d)",
+             capkind(getkind(p)), getoff(p), p->i.key);
       break;
     }
     case IOpenCapture: {
-      printcapkind(getkind(p));
-      printf(" (idx = %d)", p->i.key);
+      printf("%s (idx = %d)", capkind(getkind(p)), p->i.key);
       break;
     }
     case ISet: {
@@ -124,8 +123,8 @@ void printpatt (Instruction *p, int n) {
 
 #if defined(LPEG_DEBUG)
 static void printcap (Capture *cap) {
-  printcapkind(cap->kind);
-  printf(" (idx: %d - size: %d) -> %p\n", cap->idx, cap->siz, cap->s);
+  printf("%s (idx: %d - size: %d) -> %p\n",
+         capkind(cap->kind), cap->idx, cap->siz, cap->s);
 }
 
 
@@ -177,7 +176,8 @@ void printtree (TTree *tree, int ident) {
       break;
     }
     case TOpenCall: case TCall: {
-      printf(" key: %d\n", tree->key);
+      assert(sib2(tree)->tag == TRule);
+      printf(" key: %d  (rule: %d)\n", tree->key, sib2(tree)->cap);
       break;
     }
     case TBehind: {
@@ -186,7 +186,7 @@ void printtree (TTree *tree, int ident) {
       break;
     }
     case TCapture: {
-      printf(" cap: %d  key: %d  n: %d\n", tree->cap, tree->key, tree->u.n);
+      printf(" kind: '%s'  key: %d\n", capkind(tree->cap), tree->key);
       printtree(sib1(tree), ident + 2);
       break;
     }

3rd/lpeg/lptree.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lptree.c,v 1.21 2015/09/28 17:01:25 roberto Exp $
+** $Id: lptree.c,v 1.22 2016/09/13 18:10:22 roberto Exp $
 ** Copyright 2013, Lua.org & PUC-Rio  (see 'lpeg.html' for license)
 */
 
@@ -64,7 +64,7 @@ static void fixonecall (lua_State *L, int postable, TTree *g, TTree *t) {
   t->tag = TCall;
   t->u.ps = n - (t - g);  /* position relative to node */
   assert(sib2(t)->tag == TRule);
-  sib2(t)->key = t->key;
+  sib2(t)->key = t->key;  /* fix rule's key */
 }
 
 
@@ -935,7 +935,7 @@ static void buildgrammar (lua_State *L, TTree *grammar, int frule, int n) {
     int rulesize;
     TTree *rn = gettree(L, ridx, &rulesize);
     nd->tag = TRule;
-    nd->key = 0;
+    nd->key = 0;  /* will be fixed when rule is used */
     nd->cap = i;  /* rule number */
     nd->u.ps = rulesize + 1;  /* point to next rule */
     memcpy(sib1(nd), rn, rulesize * sizeof(TTree));  /* copy rule */
@@ -969,6 +969,11 @@ static int checkloops (TTree *tree) {
 }
 
 
+/*
+** Give appropriate error message for 'verifyrule'. If a rule appears
+** twice in 'passed', there is path from it back to itself without
+** advancing the subject.
+*/
 static int verifyerror (lua_State *L, int *passed, int npassed) {
   int i, j;
   for (i = npassed - 1; i >= 0; i--) {  /* search for a repetition */
@@ -990,6 +995,8 @@ static int verifyerror (lua_State *L, int *passed, int npassed) {
 ** is only relevant if the first is nullable.
 ** Parameter 'nb' works as an accumulator, to allow tail calls in
 ** choices. ('nb' true makes function returns true.)
+** Parameter 'passed' is a list of already visited rules, 'npassed'
+** counts the elements in 'passed'.
 ** Assume ktable at the top of the stack.
 */
 static int verifyrule (lua_State *L, TTree *tree, int *passed, int npassed,

3rd/lpeg/lptree.h

@@ -1,5 +1,5 @@
 /*  
-** $Id: lptree.h,v 1.2 2013/03/24 13:51:12 roberto Exp $
+** $Id: lptree.h,v 1.3 2016/09/13 18:07:51 roberto Exp $
 */
 
 #if !defined(lptree_h)
@@ -13,38 +13,43 @@
 ** types of trees
 */
 typedef enum TTag {
-  TChar = 0, TSet, TAny,  /* standard PEG elements */
-  TTrue, TFalse,
-  TRep,
-  TSeq, TChoice,
-  TNot, TAnd,
-  TCall,
-  TOpenCall,
-  TRule,  /* sib1 is rule's pattern, sib2 is 'next' rule */
-  TGrammar,  /* sib1 is initial (and first) rule */
-  TBehind,  /* match behind */
-  TCapture,  /* regular capture */
-  TRunTime  /* run-time capture */
+  TChar = 0,  /* 'n' = char */
+  TSet,  /* the set is stored in next CHARSETSIZE bytes */
+  TAny,
+  TTrue,
+  TFalse,
+  TRep,  /* 'sib1'* */
+  TSeq,  /* 'sib1' 'sib2' */
+  TChoice,  /* 'sib1' / 'sib2' */
+  TNot,  /* !'sib1' */
+  TAnd,  /* &'sib1' */
+  TCall,  /* ktable[key] is rule's key; 'sib2' is rule being called */
+  TOpenCall,  /* ktable[key] is rule's key */
+  TRule,  /* ktable[key] is rule's key (but key == 0 for unused rules);
+             'sib1' is rule's pattern;
+             'sib2' is next rule; 'cap' is rule's sequential number */
+  TGrammar,  /* 'sib1' is initial (and first) rule */
+  TBehind,  /* 'sib1' is pattern, 'n' is how much to go back */
+  TCapture,  /* captures: 'cap' is kind of capture (enum 'CapKind');
+                ktable[key] is Lua value associated with capture;
+                'sib1' is capture body */
+  TRunTime  /* run-time capture: 'key' is Lua function;
+               'sib1' is capture body */
 } TTag;
 
-/* number of siblings for each tree */
-extern const byte numsiblings[];
-
 
 /*
 ** Tree trees
-** The first sibling of a tree (if there is one) is immediately after
-** the tree.  A reference to a second sibling (ps) is its position
-** relative to the position of the tree itself.  A key in ktable
-** uses the (unique) address of the original tree that created that
-** entry. NULL means no data.
+** The first child of a tree (if there is one) is immediately after
+** the tree.  A reference to a second child (ps) is its position
+** relative to the position of the tree itself.
 */
 typedef struct TTree {
   byte tag;
   byte cap;  /* kind of capture (if it is a capture) */
   unsigned short key;  /* key in ktable for Lua data (0 if no key) */
   union {
-    int ps;  /* occasional second sibling */
+    int ps;  /* occasional second child */
     int n;  /* occasional counter */
   } u;
 } TTree;
@@ -61,10 +66,10 @@ typedef struct Pattern {
 } Pattern;
 
 
-/* number of siblings for each tree */
+/* number of children for each tree */
 extern const byte numsiblings[];
 
-/* access to siblings */
+/* access to children */
 #define sib1(t)         ((t) + 1)
 #define sib2(t)         ((t) + (t)->u.ps)
 

3rd/lpeg/lptypes.h

@@ -1,7 +1,7 @@
 /*
-** $Id: lptypes.h,v 1.14 2015/09/28 17:17:41 roberto Exp $
+** $Id: lptypes.h,v 1.16 2017/01/13 13:33:17 roberto Exp $
 ** LPeg - PEG pattern matching for Lua
-** Copyright 2007-2015, Lua.org & PUC-Rio  (see 'lpeg.html' for license)
+** Copyright 2007-2017, Lua.org & PUC-Rio  (see 'lpeg.html' for license)
 ** written by Roberto Ierusalimschy
 */
 
@@ -19,7 +19,7 @@
 #include "lua.h"
 
 
-#define VERSION         "1.0.0"
+#define VERSION         "1.0.1"
 
 
 #define PATTERN_T	"lpeg-pattern"
@@ -55,9 +55,9 @@
 #endif
 
 
-/* maximum number of rules in a grammar */
+/* maximum number of rules in a grammar (limited by 'unsigned char') */
 #if !defined(MAXRULES)
-#define MAXRULES        1000
+#define MAXRULES        250
 #endif
 
 

3rd/lpeg/lpvm.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lpvm.c,v 1.6 2015/09/28 17:01:25 roberto Exp $
+** $Id: lpvm.c,v 1.9 2016/06/03 20:11:18 roberto Exp $
 ** Copyright 2007, Lua.org & PUC-Rio  (see 'lpeg.html' for license)
 */
 
@@ -45,14 +45,16 @@ typedef struct Stack {
 
 
 /*
-** Double the size of the array of captures
+** Make the size of the array of captures 'cap' twice as large as needed
+** (which is 'captop'). ('n' is the number of new elements.)
 */
-static Capture *doublecap (lua_State *L, Capture *cap, int captop, int ptop) {
+static Capture *doublecap (lua_State *L, Capture *cap, int captop,
+                                         int n, int ptop) {
   Capture *newc;
   if (captop >= INT_MAX/((int)sizeof(Capture) * 2))
     luaL_error(L, "too many captures");
   newc = (Capture *)lua_newuserdata(L, captop * 2 * sizeof(Capture));
-  memcpy(newc, cap, captop * sizeof(Capture));
+  memcpy(newc, cap, (captop - n) * sizeof(Capture));
   lua_replace(L, caplistidx(ptop));
   return newc;
 }
@@ -113,8 +115,8 @@ static int resdyncaptures (lua_State *L, int fr, int curr, int limit) {
 */
 static void adddyncaptures (const char *s, Capture *base, int n, int fd) {
   int i;
-  /* Cgroup capture is already there */
-  assert(base[0].kind == Cgroup && base[0].siz == 0);
+  base[0].kind = Cgroup;  /* create group capture */
+  base[0].siz = 0;
   base[0].idx = 0;  /* make it an anonymous group */
   for (i = 1; i <= n; i++) {  /* add runtime captures */
     base[i].kind = Cruntime;
@@ -157,10 +159,11 @@ const char *match (lua_State *L, const char *o, const char *s, const char *e,
   lua_pushlightuserdata(L, stackbase);
   for (;;) {
 #if defined(DEBUG)
-      printf("s: |%s| stck:%d, dyncaps:%d, caps:%d  ",
-             s, stack - getstackbase(L, ptop), ndyncap, captop);
-      printinst(op, p);
+      printf("-------------------------------------\n");
       printcaplist(capture, capture + captop);
+      printf("s: |%s| stck:%d, dyncaps:%d, caps:%d  ",
+             s, (int)(stack - getstackbase(L, ptop)), ndyncap, captop);
+      printinst(op, p);
 #endif
     assert(stackidx(ptop) + ndyncap == lua_gettop(L) && ndyncap <= captop);
     switch ((Opcode)p->i.code) {
@@ -284,6 +287,9 @@ const char *match (lua_State *L, const char *o, const char *s, const char *e,
           ndyncap -= removedyncap(L, capture, stack->caplevel, captop);
         captop = stack->caplevel;
         p = stack->p;
+#if defined(DEBUG)
+        printf("**FAIL**\n");
+#endif
         continue;
       }
       case ICloseRunTime: {
@@ -293,16 +299,19 @@ const char *match (lua_State *L, const char *o, const char *s, const char *e,
         cs.s = o; cs.L = L; cs.ocap = capture; cs.ptop = ptop;
         n = runtimecap(&cs, capture + captop, s, &rem);  /* call function */
         captop -= n;  /* remove nested captures */
+        ndyncap -= rem;  /* update number of dynamic captures */
         fr -= rem;  /* 'rem' items were popped from Lua stack */
         res = resdyncaptures(L, fr, s - o, e - o);  /* get result */
         if (res == -1)  /* fail? */
           goto fail;
         s = o + res;  /* else update current position */
         n = lua_gettop(L) - fr + 1;  /* number of new captures */
-        ndyncap += n - rem;  /* update number of dynamic captures */
+        ndyncap += n;  /* update number of dynamic captures */
         if (n > 0) {  /* any new capture? */
+          if (fr + n >= SHRT_MAX)
+            luaL_error(L, "too many results in match-time capture");
           if ((captop += n + 2) >= capsize) {
-            capture = doublecap(L, capture, captop, ptop);
+            capture = doublecap(L, capture, captop, n + 2, ptop);
             capsize = 2 * captop;
           }
           /* add new captures to 'capture' list */
@@ -339,7 +348,7 @@ const char *match (lua_State *L, const char *o, const char *s, const char *e,
         capture[captop].idx = p->i.key;
         capture[captop].kind = getkind(p);
         if (++captop >= capsize) {
-          capture = doublecap(L, capture, captop, ptop);
+          capture = doublecap(L, capture, captop, 0, ptop);
           capsize = 2 * captop;
         }
         p++;

3rd/lpeg/re.html

@@ -10,7 +10,7 @@
 </head>
 <body>
 
-<!-- $Id: re.html,v 1.23 2015/09/28 17:17:41 roberto Exp $ -->
+<!-- $Id: re.html,v 1.24 2016/09/20 17:41:27 roberto Exp $ -->
 
 <div id="container">
 	
@@ -406,7 +406,7 @@ of patterns accepted by <code>re</code>.
 p = [=[
 
 pattern         &lt;- exp !.
-exp             &lt;- S (alternative / grammar)
+exp             &lt;- S (grammar / alternative)
 
 alternative     &lt;- seq ('/' S seq)*
 seq             &lt;- prefix*
@@ -488,7 +488,7 @@ THE SOFTWARE.
 
 <div id="about">
 <p><small>
-$Id: re.html,v 1.23 2015/09/28 17:17:41 roberto Exp $
+$Id: re.html,v 1.24 2016/09/20 17:41:27 roberto Exp $
 </small></p>
 </div> <!-- id="about" -->
 

3rd/lpeg/test.lua

@@ -1,6 +1,6 @@
 #!/usr/bin/env lua
 
--- $Id: test.lua,v 1.109 2015/09/28 17:01:25 roberto Exp $
+-- $Id: test.lua,v 1.112 2017/01/14 18:55:22 roberto Exp $
 
 -- require"strict"    -- just to be pedantic
 
@@ -202,6 +202,14 @@ do
 end
 
 
+-- bug: loop in 'hascaptures'
+do
+  local p = m.C(-m.P{m.P'x' * m.V(1) + m.P'y'})
+  assert(p:match("xxx") == "")
+end
+
+
+
 -- test for small capture boundary
 for i = 250,260 do
   assert(#m.match(m.C(i), string.rep('a', i)) == i)
@@ -517,6 +525,27 @@ assert(m.match(m.Cs((#((#m.P"a")/"") * 1 + m.P(1)/".")^0), "aloal") == "a..a.")
 assert(m.match(m.Cs((- -m.P("a") * 1 + m.P(1)/".")^0), "aloal") == "a..a.")
 assert(m.match(m.Cs((-((-m.P"a")/"") * 1 + m.P(1)/".")^0), "aloal") == "a..a.")
 
+
+-- fixed length
+do
+  -- 'and' predicate using fixed length
+  local p = m.C(#("a" * (m.P("bd") + "cd")) * 2)
+  assert(p:match("acd") == "ac")
+
+  p = #m.P{ "a" * m.V(2), m.P"b" } * 2
+  assert(p:match("abc") == 3)
+
+  p = #(m.P"abc" * m.B"c")
+  assert(p:match("abc") == 1 and not p:match("ab"))
+ 
+  p = m.P{ "a" * m.V(2), m.P"b"^1 }
+  checkerr("pattern may not have fixed length", m.B, p)
+
+  p = "abc" * (m.P"b"^1 + m.P"a"^0)
+  checkerr("pattern may not have fixed length", m.B, p)
+end
+
+
 p = -m.P'a' * m.Cc(1) + -m.P'b' * m.Cc(2) + -m.P'c' * m.Cc(3)
 assert(p:match('a') == 2 and p:match('') == 1 and p:match('b') == 1)
 
@@ -1098,6 +1127,32 @@ do
   assert(c == 11)
 end
 
+
+-- Return a match-time capture that returns 'n' captures
+local function manyCmt (n)
+    return m.Cmt("a", function ()
+             local a = {}; for i = 1, n do a[i] = n - i end
+             return true, unpack(a)
+           end)
+end
+
+-- bug in 1.0: failed match-time that used previous match-time results
+do
+  local x
+  local function aux (...) x = #{...}; return false end
+  local res = {m.match(m.Cmt(manyCmt(20), aux) + manyCmt(10), "a")}
+  assert(#res == 10 and res[1] == 9 and res[10] == 0)
+end
+
+
+-- bug in 1.0: problems with math-times returning too many captures
+do
+  local lim = 2^11 - 10
+  local res = {m.match(manyCmt(lim), "a")}
+  assert(#res == lim and res[1] == lim - 1 and res[lim] == 0)
+  checkerr("too many", m.match, manyCmt(2^15), "a")
+end
+
 p = (m.P(function () return true, "a" end) * 'a'
   + m.P(function (s, i) return i, "aa", 20 end) * 'b'
   + m.P(function (s,i) if i <= #s then return i, "aaa" end end) * 1)^0

3rd/lua/Makefile

@@ -19,7 +19,7 @@ SYSCFLAGS=
 SYSLDFLAGS=
 SYSLIBS=
 
-MYCFLAGS=-I../../skynet-src
+MYCFLAGS=-I../../skynet-src -g
 MYLDFLAGS=
 MYLIBS=
 MYOBJS=

3rd/lua/lapi.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 2.257 2015/11/02 18:48:07 roberto Exp $
+** $Id: lapi.c,v 2.259.1.2 2017/12/06 18:35:12 roberto Exp $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -379,9 +379,9 @@ LUA_API const char *lua_tolstring (lua_State *L, int idx, size_t *len) {
       return NULL;
     }
     lua_lock(L);  /* 'luaO_tostring' may create a new string */
+    luaO_tostring(L, o);
     luaC_checkGC(L);
     o = index2addr(L, idx);  /* previous call may reallocate the stack */
-    luaO_tostring(L, o);
     lua_unlock(L);
   }
   if (len != NULL)
@@ -480,10 +480,10 @@ LUA_API void lua_pushinteger (lua_State *L, lua_Integer n) {
 LUA_API const char *lua_pushlstring (lua_State *L, const char *s, size_t len) {
   TString *ts;
   lua_lock(L);
-  luaC_checkGC(L);
   ts = (len == 0) ? luaS_new(L, "") : luaS_newlstr(L, s, len);
   setsvalue2s(L, L->top, ts);
   api_incr_top(L);
+  luaC_checkGC(L);
   lua_unlock(L);
   return getstr(ts);
 }
@@ -495,12 +495,12 @@ LUA_API const char *lua_pushstring (lua_State *L, const char *s) {
     setnilvalue(L->top);
   else {
     TString *ts;
-    luaC_checkGC(L);
     ts = luaS_new(L, s);
     setsvalue2s(L, L->top, ts);
     s = getstr(ts);  /* internal copy's address */
   }
   api_incr_top(L);
+  luaC_checkGC(L);
   lua_unlock(L);
   return s;
 }
@@ -510,8 +510,8 @@ LUA_API const char *lua_pushvfstring (lua_State *L, const char *fmt,
                                       va_list argp) {
   const char *ret;
   lua_lock(L);
-  luaC_checkGC(L);
   ret = luaO_pushvfstring(L, fmt, argp);
+  luaC_checkGC(L);
   lua_unlock(L);
   return ret;
 }
@@ -521,10 +521,10 @@ LUA_API const char *lua_pushfstring (lua_State *L, const char *fmt, ...) {
   const char *ret;
   va_list argp;
   lua_lock(L);
-  luaC_checkGC(L);
   va_start(argp, fmt);
   ret = luaO_pushvfstring(L, fmt, argp);
   va_end(argp);
+  luaC_checkGC(L);
   lua_unlock(L);
   return ret;
 }
@@ -534,12 +534,12 @@ LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) {
   lua_lock(L);
   if (n == 0) {
     setfvalue(L->top, fn);
+    api_incr_top(L);
   }
   else {
     CClosure *cl;
     api_checknelems(L, n);
     api_check(L, n <= MAXUPVAL, "upvalue index too large");
-    luaC_checkGC(L);
     cl = luaF_newCclosure(L, n);
     cl->f = fn;
     L->top -= n;
@@ -548,8 +548,9 @@ LUA_API void lua_pushcclosure (lua_State *L, lua_CFunction fn, int n) {
       /* does not need barrier because closure is white */
     }
     setclCvalue(L, L->top, cl);
+    api_incr_top(L);
+    luaC_checkGC(L);
   }
-  api_incr_top(L);
   lua_unlock(L);
 }
 
@@ -586,16 +587,16 @@ LUA_API int lua_pushthread (lua_State *L) {
 
 
 static int auxgetstr (lua_State *L, const TValue *t, const char *k) {
-  const TValue *aux;
+  const TValue *slot;
   TString *str = luaS_new(L, k);
-  if (luaV_fastget(L, t, str, aux, luaH_getstr)) {
-    setobj2s(L, L->top, aux);
+  if (luaV_fastget(L, t, str, slot, luaH_getstr)) {
+    setobj2s(L, L->top, slot);
     api_incr_top(L);
   }
   else {
     setsvalue2s(L, L->top, str);
     api_incr_top(L);
-    luaV_finishget(L, t, L->top - 1, L->top - 1, aux);
+    luaV_finishget(L, t, L->top - 1, L->top - 1, slot);
   }
   lua_unlock(L);
   return ttnov(L->top - 1);
@@ -627,17 +628,17 @@ LUA_API int lua_getfield (lua_State *L, int idx, const char *k) {
 
 LUA_API int lua_geti (lua_State *L, int idx, lua_Integer n) {
   StkId t;
-  const TValue *aux;
+  const TValue *slot;
   lua_lock(L);
   t = index2addr(L, idx);
-  if (luaV_fastget(L, t, n, aux, luaH_getint)) {
-    setobj2s(L, L->top, aux);
+  if (luaV_fastget(L, t, n, slot, luaH_getint)) {
+    setobj2s(L, L->top, slot);
     api_incr_top(L);
   }
   else {
     setivalue(L->top, n);
     api_incr_top(L);
-    luaV_finishget(L, t, L->top - 1, L->top - 1, aux);
+    luaV_finishget(L, t, L->top - 1, L->top - 1, slot);
   }
   lua_unlock(L);
   return ttnov(L->top - 1);
@@ -684,12 +685,12 @@ LUA_API int lua_rawgetp (lua_State *L, int idx, const void *p) {
 LUA_API void lua_createtable (lua_State *L, int narray, int nrec) {
   Table *t;
   lua_lock(L);
-  luaC_checkGC(L);
   t = luaH_new(L);
   sethvalue(L, L->top, t);
   api_incr_top(L);
   if (narray > 0 || nrec > 0)
     luaH_resize(L, t, narray, nrec);
+  luaC_checkGC(L);
   lua_unlock(L);
 }
 
@@ -741,15 +742,15 @@ LUA_API int lua_getuservalue (lua_State *L, int idx) {
 ** t[k] = value at the top of the stack (where 'k' is a string)
 */
 static void auxsetstr (lua_State *L, const TValue *t, const char *k) {
-  const TValue *aux;
+  const TValue *slot;
   TString *str = luaS_new(L, k);
   api_checknelems(L, 1);
-  if (luaV_fastset(L, t, str, aux, luaH_getstr, L->top - 1))
+  if (luaV_fastset(L, t, str, slot, luaH_getstr, L->top - 1))
     L->top--;  /* pop value */
   else {
     setsvalue2s(L, L->top, str);  /* push 'str' (to make it a TValue) */
     api_incr_top(L);
-    luaV_finishset(L, t, L->top - 1, L->top - 2, aux);
+    luaV_finishset(L, t, L->top - 1, L->top - 2, slot);
     L->top -= 2;  /* pop value and key */
   }
   lua_unlock(L);  /* lock done by caller */
@@ -782,16 +783,16 @@ LUA_API void lua_setfield (lua_State *L, int idx, const char *k) {
 
 LUA_API void lua_seti (lua_State *L, int idx, lua_Integer n) {
   StkId t;
-  const TValue *aux;
+  const TValue *slot;
   lua_lock(L);
   api_checknelems(L, 1);
   t = index2addr(L, idx);
-  if (luaV_fastset(L, t, n, aux, luaH_getint, L->top - 1))
+  if (luaV_fastset(L, t, n, slot, luaH_getint, L->top - 1))
     L->top--;  /* pop value */
   else {
     setivalue(L->top, n);
     api_incr_top(L);
-    luaV_finishset(L, t, L->top - 1, L->top - 2, aux);
+    luaV_finishset(L, t, L->top - 1, L->top - 2, slot);
     L->top -= 2;  /* pop value and key */
   }
   lua_unlock(L);
@@ -1012,10 +1013,9 @@ LUA_API int lua_load (lua_State *L, lua_Reader reader, void *data,
   return status;
 }
 
-static Proto * cloneproto (lua_State *L, const Proto *src) {
+static void cloneproto (lua_State *L, Proto *f, const Proto *src) {
   /* copy constants and nested proto */
   int i,n;
-  Proto *f = luaF_newproto(L, src->sp);
   n = src->sp->sizek;
   f->k=luaM_newvector(L,n,TValue);
   for (i=0; i<n; i++) setnilvalue(&f->k[i]);
@@ -1033,9 +1033,9 @@ static Proto * cloneproto (lua_State *L, const Proto *src) {
   f->p=luaM_newvector(L,n,struct Proto *);
   for (i=0; i<n; i++) f->p[i]=NULL;
   for (i=0; i<n; i++) {
-    f->p[i]=cloneproto(L, src->p[i]);
+    f->p[i]= luaF_newproto(L, src->p[i]->sp);
+	cloneproto(L, f->p[i], src->p[i]);
   }
-  return f;
 }
 
 LUA_API void lua_clonefunction (lua_State *L, const void * fp) {
@@ -1049,9 +1049,10 @@ LUA_API void lua_clonefunction (lua_State *L, const void * fp) {
     return;
   }
   cl = luaF_newLclosure(L,f->nupvalues);
-  cl->p = cloneproto(L, f->p);
   setclLvalue(L,L->top,cl);
   api_incr_top(L);
+  cl->p = luaF_newproto(L, f->p->sp);
+  cloneproto(L, cl->p, f->p);
   luaF_initupvals(L, cl);
 
   if (cl->nupvalues >= 1) {  /* does it have an upvalue? */
@@ -1193,7 +1194,6 @@ LUA_API void lua_concat (lua_State *L, int n) {
   lua_lock(L);
   api_checknelems(L, n);
   if (n >= 2) {
-    luaC_checkGC(L);
     luaV_concat(L, n);
   }
   else if (n == 0) {  /* push empty string */
@@ -1201,6 +1201,7 @@ LUA_API void lua_concat (lua_State *L, int n) {
     api_incr_top(L);
   }
   /* else n == 1; nothing to do */
+  luaC_checkGC(L);
   lua_unlock(L);
 }
 
@@ -1236,10 +1237,10 @@ LUA_API void lua_setallocf (lua_State *L, lua_Alloc f, void *ud) {
 LUA_API void *lua_newuserdata (lua_State *L, size_t size) {
   Udata *u;
   lua_lock(L);
-  luaC_checkGC(L);
   u = luaS_newudata(L, size);
   setuvalue(L, L->top, u);
   api_incr_top(L);
+  luaC_checkGC(L);
   lua_unlock(L);
   return getudatamem(u);
 }

3rd/lua/lapi.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.h,v 2.9 2015/03/06 19:49:50 roberto Exp $
+** $Id: lapi.h,v 2.9.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Auxiliary functions from Lua API
 ** See Copyright Notice in lua.h
 */

3rd/lua/lauxlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.284 2015/11/19 19:16:22 roberto Exp $
+** $Id: lauxlib.c,v 1.289.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -17,7 +17,8 @@
 #include <string.h>
 
 
-/* This file uses only the official API of Lua.
+/*
+** This file uses only the official API of Lua.
 ** Any function declared here could be written as an application function.
 */
 
@@ -68,12 +69,11 @@ static int findfield (lua_State *L, int objidx, int level) {
 
 /*
 ** Search for a name for a function in all loaded modules
-** (registry._LOADED).
 */
 static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
   int top = lua_gettop(L);
   lua_getinfo(L, "f", ar);  /* push function */
-  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
+  lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
   if (findfield(L, top + 1, 2)) {
     const char *name = lua_tostring(L, -1);
     if (strncmp(name, "_G.", 3) == 0) {  /* name start with '_G.'? */
@@ -198,6 +198,10 @@ static void tag_error (lua_State *L, int arg, int tag) {
 }
 
 
+/*
+** The use of 'lua_pushfstring' ensures this function does not
+** need reserved stack space when called.
+*/
 LUALIB_API void luaL_where (lua_State *L, int level) {
   lua_Debug ar;
   if (lua_getstack(L, level, &ar)) {  /* check function at level */
@@ -207,10 +211,15 @@ LUALIB_API void luaL_where (lua_State *L, int level) {
       return;
     }
   }
-  lua_pushliteral(L, "");  /* else, no information available... */
+  lua_pushfstring(L, "");  /* else, no information available... */
 }
 
 
+/*
+** Again, the use of 'lua_pushvfstring' ensures this function does
+** not need reserved stack space when called. (At worst, it generates
+** an error with "stack overflow" instead of the given message.)
+*/
 LUALIB_API int luaL_error (lua_State *L, const char *fmt, ...) {
   va_list argp;
   va_start(argp, fmt);
@@ -349,10 +358,15 @@ LUALIB_API int luaL_checkoption (lua_State *L, int arg, const char *def,
 }
 
 
+/*
+** Ensures the stack has at least 'space' extra slots, raising an error
+** if it cannot fulfill the request. (The error handling needs a few
+** extra slots to format the error message. In case of an error without
+** this extra space, Lua will generate the same 'stack overflow' error,
+** but without 'msg'.)
+*/
 LUALIB_API void luaL_checkstack (lua_State *L, int space, const char *msg) {
-  /* keep some extra space to run error routines, if needed */
-  const int extra = LUA_MINSTACK;
-  if (!lua_checkstack(L, space + extra)) {
+  if (!lua_checkstack(L, space)) {
     if (msg)
       luaL_error(L, "stack overflow (%s)", msg);
     else
@@ -678,7 +692,7 @@ static int skipcomment (LoadF *lf, int *cp) {
   if (c == '#') {  /* first line is a comment (Unix exec. file)? */
     do {  /* skip first line */
       c = getc(lf->f);
-    } while (c != EOF && c != '\n') ;
+    } while (c != EOF && c != '\n');
     *cp = getc(lf->f);  /* skip end-of-line, if present */
     return 1;  /* there was a comment */
   }
@@ -794,13 +808,17 @@ LUALIB_API lua_Integer luaL_len (lua_State *L, int idx) {
 
 
 LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
-  if (!luaL_callmeta(L, idx, "__tostring")) {  /* no metafield? */
+  if (luaL_callmeta(L, idx, "__tostring")) {  /* metafield? */
+    if (!lua_isstring(L, -1))
+      luaL_error(L, "'__tostring' must return a string");
+  }
+  else {
     switch (lua_type(L, idx)) {
       case LUA_TNUMBER: {
         if (lua_isinteger(L, idx))
-          lua_pushfstring(L, "%I", lua_tointeger(L, idx));
+          lua_pushfstring(L, "%I", (LUAI_UACINT)lua_tointeger(L, idx));
         else
-          lua_pushfstring(L, "%f", lua_tonumber(L, idx));
+          lua_pushfstring(L, "%f", (LUAI_UACNUMBER)lua_tonumber(L, idx));
         break;
       }
       case LUA_TSTRING:
@@ -812,10 +830,15 @@ LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
       case LUA_TNIL:
         lua_pushliteral(L, "nil");
         break;
-      default:
-        lua_pushfstring(L, "%s: %p", luaL_typename(L, idx),
-                                            lua_topointer(L, idx));
+      default: {
+        int tt = luaL_getmetafield(L, idx, "__name");  /* try name */
+        const char *kind = (tt == LUA_TSTRING) ? lua_tostring(L, -1) :
+                                                 luaL_typename(L, idx);
+        lua_pushfstring(L, "%s: %p", kind, lua_topointer(L, idx));
+        if (tt != LUA_TNIL)
+          lua_remove(L, -2);  /* remove '__name' */
         break;
+      }
     }
   }
   return lua_tolstring(L, -1, len);
@@ -867,23 +890,23 @@ static int libsize (const luaL_Reg *l) {
 
 /*
 ** Find or create a module table with a given name. The function
-** first looks at the _LOADED table and, if that fails, try a
+** first looks at the LOADED table and, if that fails, try a
 ** global variable with that name. In any case, leaves on the stack
 ** the module table.
 */
 LUALIB_API void luaL_pushmodule (lua_State *L, const char *modname,
                                  int sizehint) {
-  luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 1);  /* get _LOADED table */
-  if (lua_getfield(L, -1, modname) != LUA_TTABLE) {  /* no _LOADED[modname]? */
+  luaL_findtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE, 1);
+  if (lua_getfield(L, -1, modname) != LUA_TTABLE) {  /* no LOADED[modname]? */
     lua_pop(L, 1);  /* remove previous result */
     /* try global variable (and create one if it does not exist) */
     lua_pushglobaltable(L);
     if (luaL_findtable(L, 0, modname, sizehint) != NULL)
       luaL_error(L, "name conflict for module '%s'", modname);
     lua_pushvalue(L, -1);
-    lua_setfield(L, -3, modname);  /* _LOADED[modname] = new table */
+    lua_setfield(L, -3, modname);  /* LOADED[modname] = new table */
   }
-  lua_remove(L, -2);  /* remove _LOADED table */
+  lua_remove(L, -2);  /* remove LOADED table */
 }
 
 
@@ -947,17 +970,17 @@ LUALIB_API int luaL_getsubtable (lua_State *L, int idx, const char *fname) {
 */
 LUALIB_API void luaL_requiref (lua_State *L, const char *modname,
                                lua_CFunction openf, int glb) {
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
-  lua_getfield(L, -1, modname);  /* _LOADED[modname] */
+  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
+  lua_getfield(L, -1, modname);  /* LOADED[modname] */
   if (!lua_toboolean(L, -1)) {  /* package not already loaded? */
     lua_pop(L, 1);  /* remove field */
     lua_pushcfunction(L, openf);
     lua_pushstring(L, modname);  /* argument to open function */
     lua_call(L, 1, 1);  /* call 'openf' to open module */
     lua_pushvalue(L, -1);  /* make copy of module (call result) */
-    lua_setfield(L, -3, modname);  /* _LOADED[modname] = module */
+    lua_setfield(L, -3, modname);  /* LOADED[modname] = module */
   }
-  lua_remove(L, -2);  /* remove _LOADED table */
+  lua_remove(L, -2);  /* remove LOADED table */
   if (glb) {
     lua_pushvalue(L, -1);  /* copy of module */
     lua_setglobal(L, modname);  /* _G[modname] = module */
@@ -1015,7 +1038,7 @@ LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver, size_t sz) {
     luaL_error(L, "multiple Lua VMs detected");
   else if (*v != ver)
     luaL_error(L, "version mismatch: app. needs %f, Lua core provides %f",
-                  ver, *v);
+                  (LUAI_UACNUMBER)ver, (LUAI_UACNUMBER)*v);
 }
 
 // use clonefunction

3rd/lua/lauxlib.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.h,v 1.129 2015/11/23 11:29:43 roberto Exp $
+** $Id: lauxlib.h,v 1.131.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -16,10 +16,18 @@
 
 
 
-/* extra error code for 'luaL_load' */
+/* extra error code for 'luaL_loadfilex' */
 #define LUA_ERRFILE     (LUA_ERRERR+1)
 
 
+/* key, in the registry, for table of loaded modules */
+#define LUA_LOADED_TABLE	"_LOADED"
+
+
+/* key, in the registry, for table of preloaded loaders */
+#define LUA_PRELOAD_TABLE	"_PRELOAD"
+
+
 typedef struct luaL_Reg {
   const char *name;
   lua_CFunction func;

3rd/lua/lbaselib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.312 2015/10/29 15:21:04 roberto Exp $
+** $Id: lbaselib.c,v 1.314.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -102,8 +102,8 @@ static int luaB_tonumber (lua_State *L) {
 static int luaB_error (lua_State *L) {
   int level = (int)luaL_optinteger(L, 2, 1);
   lua_settop(L, 1);
-  if (lua_isstring(L, 1) && level > 0) {  /* add extra information? */
-    luaL_where(L, level);
+  if (lua_type(L, 1) == LUA_TSTRING && level > 0) {
+    luaL_where(L, level);   /* add extra information */
     lua_pushvalue(L, 1);
     lua_concat(L, 2);
   }
@@ -208,8 +208,8 @@ static int luaB_type (lua_State *L) {
 
 static int pairsmeta (lua_State *L, const char *method, int iszero,
                       lua_CFunction iter) {
+  luaL_checkany(L, 1);
   if (luaL_getmetafield(L, 1, method) == LUA_TNIL) {  /* no metamethod? */
-    luaL_checktype(L, 1, LUA_TTABLE);  /* argument must be a table */
     lua_pushcfunction(L, iter);  /* will return generator, */
     lua_pushvalue(L, 1);  /* state, */
     if (iszero) lua_pushinteger(L, 0);  /* and initial value */
@@ -251,9 +251,8 @@ static int ipairsaux (lua_State *L) {
 
 
 /*
-** This function will use either 'ipairsaux' or 'ipairsaux_raw' to
-** traverse a table, depending on whether the table has metamethods
-** that can affect the traversal.
+** 'ipairs' function. Returns 'ipairsaux', given "table", 0.
+** (The given "table" may not be a table.)
 */
 static int luaB_ipairs (lua_State *L) {
 #if defined(LUA_COMPAT_IPAIRS)

3rd/lua/lbitlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lbitlib.c,v 1.30 2015/11/11 19:08:09 roberto Exp $
+** $Id: lbitlib.c,v 1.30.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Standard library for bitwise operations
 ** See Copyright Notice in lua.h
 */

3rd/lua/lcode.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lcode.h,v 1.63 2013/12/30 20:47:58 roberto Exp $
+** $Id: lcode.h,v 1.64.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Code generator for Lua
 ** See Copyright Notice in lua.h
 */
@@ -40,7 +40,8 @@ typedef enum BinOpr {
 typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
 
 
-#define getcode(fs,e)	((fs)->f->sp->code[(e)->u.info])
+/* get (pointer to) instruction of given 'expdesc' */
+#define getinstruction(fs,e)	((fs)->f->sp->code[(e)->u.info])
 
 #define luaK_codeAsBx(fs,o,A,sBx)	luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
 

3rd/lua/lcorolib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lcorolib.c,v 1.9 2014/11/02 19:19:04 roberto Exp $
+** $Id: lcorolib.c,v 1.10.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Coroutine Library
 ** See Copyright Notice in lua.h
 */
@@ -75,7 +75,7 @@ static int luaB_auxwrap (lua_State *L) {
   lua_State *co = lua_tothread(L, lua_upvalueindex(1));
   int r = auxresume(L, co, lua_gettop(L));
   if (r < 0) {
-    if (lua_isstring(L, -1)) {  /* error object is a string? */
+    if (lua_type(L, -1) == LUA_TSTRING) {  /* error object is a string? */
       luaL_where(L, 1);  /* add extra info */
       lua_insert(L, -2);
       lua_concat(L, 2);

3rd/lua/lctype.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lctype.c,v 1.12 2014/11/02 19:19:04 roberto Exp $
+** $Id: lctype.c,v 1.12.1.1 2017/04/19 17:20:42 roberto Exp $
 ** 'ctype' functions for Lua
 ** See Copyright Notice in lua.h
 */

3rd/lua/lctype.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lctype.h,v 1.12 2011/07/15 12:50:29 roberto Exp $
+** $Id: lctype.h,v 1.12.1.1 2013/04/12 18:48:47 roberto Exp $
 ** 'ctype' functions for Lua
 ** See Copyright Notice in lua.h
 */

3rd/lua/ldblib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ldblib.c,v 1.151 2015/11/23 11:29:43 roberto Exp $
+** $Id: ldblib.c,v 1.151.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Interface from Lua to its debug API
 ** See Copyright Notice in lua.h
 */

3rd/lua/ldebug.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ldebug.c,v 2.117 2015/11/02 18:48:07 roberto Exp $
+** $Id: ldebug.c,v 2.121.1.2 2017/07/10 17:21:50 roberto Exp $
 ** Debug Interface
 ** See Copyright Notice in lua.h
 */
@@ -38,7 +38,8 @@
 #define ci_func(ci)		(clLvalue((ci)->func))
 
 
-static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name);
+static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
+                                    const char **name);
 
 
 static int currentpc (CallInfo *ci) {
@@ -69,7 +70,13 @@ static void swapextra (lua_State *L) {
 
 
 /*
-** this function can be called asynchronous (e.g. during a signal)
+** This function can be called asynchronously (e.g. during a signal).
+** Fields 'oldpc', 'basehookcount', and 'hookcount' (set by
+** 'resethookcount') are for debug only, and it is no problem if they
+** get arbitrary values (causes at most one wrong hook call). 'hookmask'
+** is an atomic value. We assume that pointers are atomic too (e.g., gcc
+** ensures that for all platforms where it runs). Moreover, 'hook' is
+** always checked before being called (see 'luaD_hook').
 */
 LUA_API void lua_sethook (lua_State *L, lua_Hook func, int mask, int count) {
   if (func == NULL || mask == 0) {  /* turn off hooks? */
@@ -118,7 +125,7 @@ LUA_API int lua_getstack (lua_State *L, int level, lua_Debug *ar) {
 
 
 static const char *upvalname (Proto *p, int uv) {
-  TString *s = check_exp(uv < p->sizeupvalues, p->sp->upvalues[uv].name);
+  TString *s = check_exp(uv < p->sp->sizeupvalues, p->sp->upvalues[uv].name);
   if (s == NULL) return "?";
   else return getstr(s);
 }
@@ -238,6 +245,20 @@ static void collectvalidlines (lua_State *L, Closure *f) {
 }
 
 
+static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
+  if (ci == NULL)  /* no 'ci'? */
+    return NULL;  /* no info */
+  else if (ci->callstatus & CIST_FIN) {  /* is this a finalizer? */
+    *name = "__gc";
+    return "metamethod";  /* report it as such */
+  }
+  /* calling function is a known Lua function? */
+  else if (!(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
+    return funcnamefromcode(L, ci->previous, name);
+  else return NULL;  /* no way to find a name */
+}
+
+
 static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
                        Closure *f, CallInfo *ci) {
   int status = 1;
@@ -268,11 +289,7 @@ static int auxgetinfo (lua_State *L, const char *what, lua_Debug *ar,
         break;
       }
       case 'n': {
-        /* calling function is a known Lua function? */
-        if (ci && !(ci->callstatus & CIST_TAIL) && isLua(ci->previous))
-          ar->namewhat = getfuncname(L, ci->previous, &ar->name);
-        else
-          ar->namewhat = NULL;
+        ar->namewhat = getfuncname(L, ci, &ar->name);
         if (ar->namewhat == NULL) {
           ar->namewhat = "";  /* not found */
           ar->name = NULL;
@@ -465,8 +482,15 @@ static const char *getobjname (Proto *p, int lastpc, int reg,
 }
 
 
-static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
-  TMS tm = (TMS)0;  /* to avoid warnings */
+/*
+** Try to find a name for a function based on the code that called it.
+** (Only works when function was called by a Lua function.)
+** Returns what the name is (e.g., "for iterator", "method",
+** "metamethod") and sets '*name' to point to the name.
+*/
+static const char *funcnamefromcode (lua_State *L, CallInfo *ci,
+                                     const char **name) {
+  TMS tm = (TMS)0;  /* (initial value avoids warnings) */
   Proto *p = ci_func(ci)->p;  /* calling function */
   int pc = currentpc(ci);  /* calling instruction index */
   Instruction i = p->sp->code[pc];  /* calling instruction */
@@ -476,13 +500,13 @@ static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
   }
   switch (GET_OPCODE(i)) {
     case OP_CALL:
-    case OP_TAILCALL:  /* get function name */
-      return getobjname(p, pc, GETARG_A(i), name);
+    case OP_TAILCALL:
+      return getobjname(p, pc, GETARG_A(i), name);  /* get function name */
     case OP_TFORCALL: {  /* for iterator */
       *name = "for iterator";
        return "for iterator";
     }
-    /* all other instructions can call only through metamethods */
+    /* other instructions can do calls through metamethods */
     case OP_SELF: case OP_GETTABUP: case OP_GETTABLE:
       tm = TM_INDEX;
       break;
@@ -503,7 +527,8 @@ static const char *getfuncname (lua_State *L, CallInfo *ci, const char **name) {
     case OP_EQ: tm = TM_EQ; break;
     case OP_LT: tm = TM_LT; break;
     case OP_LE: tm = TM_LE; break;
-    default: lua_assert(0);  /* other instructions cannot call a function */
+    default:
+      return NULL;  /* cannot find a reasonable name */
   }
   *name = getstr(G(L)->tmname[tm]);
   return "metamethod";
@@ -558,7 +583,7 @@ static const char *varinfo (lua_State *L, const TValue *o) {
 
 
 l_noret luaG_typeerror (lua_State *L, const TValue *o, const char *op) {
-  const char *t = objtypename(o);
+  const char *t = luaT_objtypename(L, o);
   luaG_runerror(L, "attempt to %s a %s value%s", op, t, varinfo(L, o));
 }
 
@@ -590,9 +615,9 @@ l_noret luaG_tointerror (lua_State *L, const TValue *p1, const TValue *p2) {
 
 
 l_noret luaG_ordererror (lua_State *L, const TValue *p1, const TValue *p2) {
-  const char *t1 = objtypename(p1);
-  const char *t2 = objtypename(p2);
-  if (t1 == t2)
+  const char *t1 = luaT_objtypename(L, p1);
+  const char *t2 = luaT_objtypename(L, p2);
+  if (strcmp(t1, t2) == 0)
     luaG_runerror(L, "attempt to compare two %s values", t1);
   else
     luaG_runerror(L, "attempt to compare %s with %s", t1, t2);
@@ -628,6 +653,7 @@ l_noret luaG_runerror (lua_State *L, const char *fmt, ...) {
   CallInfo *ci = L->ci;
   const char *msg;
   va_list argp;
+  luaC_checkGC(L);  /* error message uses memory */
   va_start(argp, fmt);
   msg = luaO_pushvfstring(L, fmt, argp);  /* format message */
   va_end(argp);

3rd/lua/ldebug.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ldebug.h,v 2.14 2015/05/22 17:45:56 roberto Exp $
+** $Id: ldebug.h,v 2.14.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Auxiliary functions from Debug Interface module
 ** See Copyright Notice in lua.h
 */

3rd/lua/ldo.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.c,v 2.150 2015/11/19 19:16:22 roberto Exp $
+** $Id: ldo.c,v 2.157.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -211,9 +211,9 @@ static int stackinuse (lua_State *L) {
   CallInfo *ci;
   StkId lim = L->top;
   for (ci = L->ci; ci != NULL; ci = ci->previous) {
-    lua_assert(ci->top <= L->stack_last);
     if (lim < ci->top) lim = ci->top;
   }
+  lua_assert(lim <= L->stack_last);
   return cast_int(lim - L->stack) + 1;  /* part of stack in use */
 }
 
@@ -221,16 +221,19 @@ static int stackinuse (lua_State *L) {
 void luaD_shrinkstack (lua_State *L) {
   int inuse = stackinuse(L);
   int goodsize = inuse + (inuse / 8) + 2*EXTRA_STACK;
-  if (goodsize > LUAI_MAXSTACK) goodsize = LUAI_MAXSTACK;
-  if (L->stacksize > LUAI_MAXSTACK)  /* was handling stack overflow? */
+  if (goodsize > LUAI_MAXSTACK)
+    goodsize = LUAI_MAXSTACK;  /* respect stack limit */
+  if (L->stacksize > LUAI_MAXSTACK)  /* had been handling stack overflow? */
     luaE_freeCI(L);  /* free all CIs (list grew because of an error) */
   else
     luaE_shrinkCI(L);  /* shrink list */
-  if (inuse <= LUAI_MAXSTACK &&  /* not handling stack overflow? */
-      goodsize < L->stacksize)  /* trying to shrink? */
-    luaD_reallocstack(L, goodsize);  /* shrink it */
-  else
-    condmovestack(L,,);  /* don't change stack (change only for debugging) */
+  /* if thread is currently not handling a stack overflow and its
+     good size is smaller than current size, shrink its stack */
+  if (inuse <= (LUAI_MAXSTACK - EXTRA_STACK) &&
+      goodsize < L->stacksize)
+    luaD_reallocstack(L, goodsize);
+  else  /* don't change stack */
+    condmovestack(L,{},{});  /* (change only for debugging) */
 }
 
 
@@ -242,9 +245,14 @@ void luaD_inctop (lua_State *L) {
 /* }================================================================== */
 
 
+/*
+** Call a hook for the given event. Make sure there is a hook to be
+** called. (Both 'L->hook' and 'L->hookmask', which triggers this
+** function, can be changed asynchronously by signals.)
+*/
 void luaD_hook (lua_State *L, int event, int line) {
   lua_Hook hook = L->hook;
-  if (hook && L->allowhook) {
+  if (hook && L->allowhook) {  /* make sure there is a hook */
     CallInfo *ci = L->ci;
     ptrdiff_t top = savestack(L, L->top);
     ptrdiff_t ci_top = savestack(L, ci->top);
@@ -317,86 +325,6 @@ static void tryfuncTM (lua_State *L, StkId func) {
 }
 
 
-
-#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L)))
-
-
-/* macro to check stack size, preserving 'p' */
-#define checkstackp(L,n,p)  \
-  luaD_checkstackaux(L, n, \
-    ptrdiff_t t__ = savestack(L, p);  /* save 'p' */ \
-    luaC_checkGC(L),  /* stack grow uses memory */ \
-    p = restorestack(L, t__))  /* 'pos' part: restore 'p' */
-
-
-/*
-** Prepares a function call: checks the stack, creates a new CallInfo
-** entry, fills in the relevant information, calls hook if needed.
-** If function is a C function, does the call, too. (Otherwise, leave
-** the execution ('luaV_execute') to the caller, to allow stackless
-** calls.) Returns true iff function has been executed (C function).
-*/
-int luaD_precall (lua_State *L, StkId func, int nresults) {
-  lua_CFunction f;
-  CallInfo *ci;
-  switch (ttype(func)) {
-    case LUA_TCCL:  /* C closure */
-      f = clCvalue(func)->f;
-      goto Cfunc;
-    case LUA_TLCF:  /* light C function */
-      f = fvalue(func);
-     Cfunc: {
-      int n;  /* number of returns */
-      checkstackp(L, LUA_MINSTACK, func);  /* ensure minimum stack size */
-      ci = next_ci(L);  /* now 'enter' new function */
-      ci->nresults = nresults;
-      ci->func = func;
-      ci->top = L->top + LUA_MINSTACK;
-      lua_assert(ci->top <= L->stack_last);
-      ci->callstatus = 0;
-      if (L->hookmask & LUA_MASKCALL)
-        luaD_hook(L, LUA_HOOKCALL, -1);
-      lua_unlock(L);
-      n = (*f)(L);  /* do the actual call */
-      lua_lock(L);
-      api_checknelems(L, n);
-      luaD_poscall(L, ci, L->top - n, n);
-      return 1;
-    }
-    case LUA_TLCL: {  /* Lua function: prepare its call */
-      StkId base;
-      SharedProto *p = clLvalue(func)->p->sp;
-      int n = cast_int(L->top - func) - 1;  /* number of real arguments */
-      int fsize = p->maxstacksize;  /* frame size */
-      checkstackp(L, fsize, func);
-      if (p->is_vararg != 1) {  /* do not use vararg? */
-        for (; n < p->numparams; n++)
-          setnilvalue(L->top++);  /* complete missing arguments */
-        base = func + 1;
-      }
-      else
-        base = adjust_varargs(L, p, n);
-      ci = next_ci(L);  /* now 'enter' new function */
-      ci->nresults = nresults;
-      ci->func = func;
-      ci->u.l.base = base;
-      L->top = ci->top = base + fsize;
-      lua_assert(ci->top <= L->stack_last);
-      ci->u.l.savedpc = p->code;  /* starting point */
-      ci->callstatus = CIST_LUA;
-      if (L->hookmask & LUA_MASKCALL)
-        callhook(L, ci);
-      return 0;
-    }
-    default: {  /* not a function */
-      checkstackp(L, 1, func);  /* ensure space for metamethod */
-      tryfuncTM(L, func);  /* try to get '__call' metamethod */
-      return luaD_precall(L, func, nresults);  /* now it must be a function */
-    }
-  }
-}
-
-
 /*
 ** Given 'nres' results at 'firstResult', move 'wanted' of them to 'res'.
 ** Handle most typical cases (zero results for commands, one result for
@@ -463,6 +391,86 @@ int luaD_poscall (lua_State *L, CallInfo *ci, StkId firstResult, int nres) {
 }
 
 
+
+#define next_ci(L) (L->ci = (L->ci->next ? L->ci->next : luaE_extendCI(L)))
+
+
+/* macro to check stack size, preserving 'p' */
+#define checkstackp(L,n,p)  \
+  luaD_checkstackaux(L, n, \
+    ptrdiff_t t__ = savestack(L, p);  /* save 'p' */ \
+    luaC_checkGC(L),  /* stack grow uses memory */ \
+    p = restorestack(L, t__))  /* 'pos' part: restore 'p' */
+
+
+/*
+** Prepares a function call: checks the stack, creates a new CallInfo
+** entry, fills in the relevant information, calls hook if needed.
+** If function is a C function, does the call, too. (Otherwise, leave
+** the execution ('luaV_execute') to the caller, to allow stackless
+** calls.) Returns true iff function has been executed (C function).
+*/
+int luaD_precall (lua_State *L, StkId func, int nresults) {
+  lua_CFunction f;
+  CallInfo *ci;
+  switch (ttype(func)) {
+    case LUA_TCCL:  /* C closure */
+      f = clCvalue(func)->f;
+      goto Cfunc;
+    case LUA_TLCF:  /* light C function */
+      f = fvalue(func);
+     Cfunc: {
+      int n;  /* number of returns */
+      checkstackp(L, LUA_MINSTACK, func);  /* ensure minimum stack size */
+      ci = next_ci(L);  /* now 'enter' new function */
+      ci->nresults = nresults;
+      ci->func = func;
+      ci->top = L->top + LUA_MINSTACK;
+      lua_assert(ci->top <= L->stack_last);
+      ci->callstatus = 0;
+      if (L->hookmask & LUA_MASKCALL)
+        luaD_hook(L, LUA_HOOKCALL, -1);
+      lua_unlock(L);
+      n = (*f)(L);  /* do the actual call */
+      lua_lock(L);
+      api_checknelems(L, n);
+      luaD_poscall(L, ci, L->top - n, n);
+      return 1;
+    }
+    case LUA_TLCL: {  /* Lua function: prepare its call */
+      StkId base;
+      SharedProto *p = clLvalue(func)->p->sp;
+      int n = cast_int(L->top - func) - 1;  /* number of real arguments */
+      int fsize = p->maxstacksize;  /* frame size */
+      checkstackp(L, fsize, func);
+      if (p->is_vararg)
+        base = adjust_varargs(L, p, n);
+      else {  /* non vararg function */
+        for (; n < p->numparams; n++)
+          setnilvalue(L->top++);  /* complete missing arguments */
+        base = func + 1;
+      }
+      ci = next_ci(L);  /* now 'enter' new function */
+      ci->nresults = nresults;
+      ci->func = func;
+      ci->u.l.base = base;
+      L->top = ci->top = base + fsize;
+      lua_assert(ci->top <= L->stack_last);
+      ci->u.l.savedpc = p->code;  /* starting point */
+      ci->callstatus = CIST_LUA;
+      if (L->hookmask & LUA_MASKCALL)
+        callhook(L, ci);
+      return 0;
+    }
+    default: {  /* not a function */
+      checkstackp(L, 1, func);  /* ensure space for metamethod */
+      tryfuncTM(L, func);  /* try to get '__call' metamethod */
+      return luaD_precall(L, func, nresults);  /* now it must be a function */
+    }
+  }
+}
+
+
 /*
 ** Check appropriate error for stack overflow ("regular" overflow or
 ** overflow while handling stack overflow). If 'nCalls' is larger than
@@ -515,19 +523,17 @@ static void finishCcall (lua_State *L, int status) {
   /* error status can only happen in a protected call */
   lua_assert((ci->callstatus & CIST_YPCALL) || status == LUA_YIELD);
   if (ci->callstatus & CIST_YPCALL) {  /* was inside a pcall? */
-    ci->callstatus &= ~CIST_YPCALL;  /* finish 'lua_pcall' */
-    L->errfunc = ci->u.c.old_errfunc;
+    ci->callstatus &= ~CIST_YPCALL;  /* continuation is also inside it */
+    L->errfunc = ci->u.c.old_errfunc;  /* with the same error function */
   }
   /* finish 'lua_callk'/'lua_pcall'; CIST_YPCALL and 'errfunc' already
      handled */
   adjustresults(L, ci->nresults);
-  /* call continuation function */
   lua_unlock(L);
-  n = (*ci->u.c.k)(L, status, ci->u.c.ctx);
+  n = (*ci->u.c.k)(L, status, ci->u.c.ctx);  /* call continuation function */
   lua_lock(L);
   api_checknelems(L, n);
-  /* finish 'luaD_precall' */
-  luaD_poscall(L, ci, L->top - n, n);
+  luaD_poscall(L, ci, L->top - n, n);  /* finish 'luaD_precall' */
 }
 
 
@@ -590,15 +596,16 @@ static int recover (lua_State *L, int status) {
 
 
 /*
-** signal an error in the call to 'resume', not in the execution of the
-** coroutine itself. (Such errors should not be handled by any coroutine
-** error handler and should not kill the coroutine.)
+** Signal an error in the call to 'lua_resume', not in the execution
+** of the coroutine itself. (Such errors should not be handled by any
+** coroutine error handler and should not kill the coroutine.)
 */
-static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) {
-  L->top = firstArg;  /* remove args from the stack */
+static int resume_error (lua_State *L, const char *msg, int narg) {
+  L->top -= narg;  /* remove args from the stack */
   setsvalue2s(L, L->top, luaS_new(L, msg));  /* push error message */
   api_incr_top(L);
-  luaD_throw(L, -1);  /* jump back to 'lua_resume' */
+  lua_unlock(L);
+  return LUA_ERRRUN;
 }
 
 
@@ -610,22 +617,15 @@ static l_noret resume_error (lua_State *L, const char *msg, StkId firstArg) {
 ** coroutine.
 */
 static void resume (lua_State *L, void *ud) {
-  int nCcalls = L->nCcalls;
   int n = *(cast(int*, ud));  /* number of arguments */
   StkId firstArg = L->top - n;  /* first argument */
   CallInfo *ci = L->ci;
-  if (nCcalls >= LUAI_MAXCCALLS)
-    resume_error(L, "C stack overflow", firstArg);
-  if (L->status == LUA_OK) {  /* may be starting a coroutine */
-    if (ci != &L->base_ci)  /* not in base level? */
-      resume_error(L, "cannot resume non-suspended coroutine", firstArg);
-    /* coroutine is in base level; start running it */
+  if (L->status == LUA_OK) {  /* starting a coroutine? */
     if (!luaD_precall(L, firstArg - 1, LUA_MULTRET))  /* Lua function? */
       luaV_execute(L);  /* call it */
   }
-  else if (L->status != LUA_YIELD)
-    resume_error(L, "cannot resume dead coroutine", firstArg);
   else {  /* resuming from previous yield */
+    lua_assert(L->status == LUA_YIELD);
     L->status = LUA_OK;  /* mark that it is running (again) */
     ci->func = restorestack(L, ci->extra);
     if (isLua(ci))  /* yielded inside a hook? */
@@ -642,7 +642,6 @@ static void resume (lua_State *L, void *ud) {
     }
     unroll(L, NULL);  /* run continuation */
   }
-  lua_assert(nCcalls == L->nCcalls);
 }
 
 
@@ -650,8 +649,16 @@ LUA_API int lua_resume (lua_State *L, lua_State *from, int nargs) {
   int status;
   unsigned short oldnny = L->nny;  /* save "number of non-yieldable" calls */
   lua_lock(L);
-  luai_userstateresume(L, nargs);
+  if (L->status == LUA_OK) {  /* may be starting a coroutine */
+    if (L->ci != &L->base_ci)  /* not in base level? */
+      return resume_error(L, "cannot resume non-suspended coroutine", nargs);
+  }
+  else if (L->status != LUA_YIELD)
+    return resume_error(L, "cannot resume dead coroutine", nargs);
   L->nCcalls = (from) ? from->nCcalls + 1 : 1;
+  if (L->nCcalls >= LUAI_MAXCCALLS)
+    return resume_error(L, "C stack overflow", nargs);
+  luai_userstateresume(L, nargs);
   L->nny = 0;  /* allow yields */
   api_checknelems(L, (L->status == LUA_OK) ? nargs + 1 : nargs);
   status = luaD_rawrunprotected(L, resume, &nargs);
@@ -768,7 +775,7 @@ static void f_parser (lua_State *L, void *ud) {
     checkmode(L, p->mode, "text");
     cl = luaY_parser(L, p->z, &p->buff, &p->dyd, p->name, c);
   }
-  lua_assert(cl->nupvalues == cl->p->sizeupvalues);
+  lua_assert(cl->nupvalues == cl->p->sp->sizeupvalues);
   luaF_initupvals(L, cl);
 }
 

3rd/lua/ldo.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.h,v 2.28 2015/11/23 11:29:43 roberto Exp $
+** $Id: ldo.h,v 2.29.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -25,7 +25,7 @@
 	  { pre; luaD_growstack(L, n); pos; } else { condmovestack(L,pre,pos); }
 
 /* In general, 'pre'/'pos' are empty (nothing to save) */
-#define luaD_checkstack(L,n)	luaD_checkstackaux(L,n,,)
+#define luaD_checkstack(L,n)	luaD_checkstackaux(L,n,(void)0,(void)0)
 
 
 

3rd/lua/ldump.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ldump.c,v 2.37 2015/10/08 15:53:49 roberto Exp $
+** $Id: ldump.c,v 2.37.1.1 2017/04/19 17:20:42 roberto Exp $
 ** save precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */

3rd/lua/lfunc.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lfunc.c,v 2.45 2014/11/02 19:19:04 roberto Exp $
+** $Id: lfunc.c,v 2.45.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Auxiliary functions to manipulate prototypes and closures
 ** See Copyright Notice in lua.h
 */

3rd/lua/lfunc.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lfunc.h,v 2.15 2015/01/13 15:49:11 roberto Exp $
+** $Id: lfunc.h,v 2.15.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Auxiliary functions to manipulate prototypes and closures
 ** See Copyright Notice in lua.h
 */

3rd/lua/lgc.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.c,v 2.210 2015/11/03 18:10:44 roberto Exp $
+** $Id: lgc.c,v 2.215.1.2 2017/08/31 16:15:27 roberto Exp $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -468,7 +468,7 @@ static lu_mem traversetable (global_State *g, Table *h) {
   else  /* not weak */
     traversestrongtable(g, h);
   return sizeof(Table) + sizeof(TValue) * h->sizearray +
-                         sizeof(Node) * cast(size_t, sizenode(h));
+                         sizeof(Node) * cast(size_t, allocsizenode(h));
 }
 
 static int marksharedproto (global_State *g, SharedProto *f) {
@@ -492,15 +492,19 @@ static int marksharedproto (global_State *g, SharedProto *f) {
 ** NULL, so the use of 'markobjectN')
 */
 static int traverseproto (global_State *g, Proto *f) {
-  int i;
+  int i,nk,np;
   if (f->cache && iswhite(f->cache))
     f->cache = NULL;  /* allow cache to be collected */
-  for (i = 0; i < f->sp->sizek; i++)  /* mark literals */
+  if (f->sp == NULL)
+    return sizeof(Proto);
+  nk = (f->k == NULL) ? 0 : f->sp->sizek;
+  np = (f->p == NULL) ? 0 : f->sp->sizep;
+  for (i = 0; i < nk; i++)  /* mark literals */
     markvalue(g, &f->k[i]);
-  for (i = 0; i < f->sp->sizep; i++)  /* mark nested protos */
+  for (i = 0; i < np; i++)  /* mark nested protos */
     markobjectN(g, f->p[i]);
-  return sizeof(Proto) + sizeof(Proto *) * f->sp->sizep +
-                         sizeof(TValue) * f->sp->sizek +
+  return sizeof(Proto) + sizeof(Proto *) * np +
+                         sizeof(TValue) * nk +
                          marksharedproto(g, f->sp);
 }
 
@@ -546,7 +550,7 @@ static lu_mem traversethread (global_State *g, lua_State *th) {
     StkId lim = th->stack + th->stacksize;  /* real end of stack */
     for (; o < lim; o++)  /* clear not-marked stack slice */
       setnilvalue(o);
-    /* 'remarkupvals' may have removed thread from 'twups' list */ 
+    /* 'remarkupvals' may have removed thread from 'twups' list */
     if (!isintwups(th) && th->openupval != NULL) {
       th->twups = g->twups;  /* link it back to the list */
       g->twups = th;
@@ -650,8 +654,9 @@ static void clearkeys (global_State *g, GCObject *l, GCObject *f) {
     for (n = gnode(h, 0); n < limit; n++) {
       if (!ttisnil(gval(n)) && (iscleared(g, gkey(n)))) {
         setnilvalue(gval(n));  /* remove value ... */
-        removeentry(n);  /* and remove entry from table */
       }
+      if (ttisnil(gval(n)))  /* is entry empty? */
+        removeentry(n);  /* remove entry from table */
     }
   }
 }
@@ -761,14 +766,11 @@ static GCObject **sweeplist (lua_State *L, GCObject **p, lu_mem count) {
 /*
 ** sweep a list until a live object (or end of list)
 */
-static GCObject **sweeptolive (lua_State *L, GCObject **p, int *n) {
+static GCObject **sweeptolive (lua_State *L, GCObject **p) {
   GCObject **old = p;
-  int i = 0;
   do {
-    i++;
     p = sweeplist(L, p, 1);
   } while (p == old);
-  if (n) *n += i;
   return p;
 }
 
@@ -828,7 +830,9 @@ static void GCTM (lua_State *L, int propagateerrors) {
     setobj2s(L, L->top, tm);  /* push finalizer... */
     setobj2s(L, L->top + 1, &v);  /* ... and its argument */
     L->top += 2;  /* and (next line) call the finalizer */
+    L->ci->callstatus |= CIST_FIN;  /* will run a finalizer */
     status = luaD_pcall(L, dothecall, NULL, savestack(L, L->top - 2), 0);
+    L->ci->callstatus &= ~CIST_FIN;  /* not running a finalizer anymore */
     L->allowhook = oldah;  /* restore hooks */
     g->gcrunning = running;  /* restore state */
     if (status != LUA_OK && propagateerrors) {  /* error while running __gc? */
@@ -863,10 +867,10 @@ static int runafewfinalizers (lua_State *L) {
 /*
 ** call all pending finalizers
 */
-static void callallpendingfinalizers (lua_State *L, int propagateerrors) {
+static void callallpendingfinalizers (lua_State *L) {
   global_State *g = G(L);
   while (g->tobefnz)
-    GCTM(L, propagateerrors);
+    GCTM(L, 0);
 }
 
 
@@ -916,7 +920,7 @@ void luaC_checkfinalizer (lua_State *L, GCObject *o, Table *mt) {
     if (issweepphase(g)) {
       makewhite(g, o);  /* "sweep" object 'o' */
       if (g->sweepgc == &o->next)  /* should not remove 'sweepgc' object */
-        g->sweepgc = sweeptolive(L, g->sweepgc, NULL);  /* change 'sweepgc' */
+        g->sweepgc = sweeptolive(L, g->sweepgc);  /* change 'sweepgc' */
     }
     /* search for pointer pointing to 'o' */
     for (p = &g->allgc; *p != o; p = &(*p)->next) { /* empty */ }
@@ -958,19 +962,16 @@ static void setpause (global_State *g) {
 
 /*
 ** Enter first sweep phase.
-** The call to 'sweeptolive' makes pointer point to an object inside
-** the list (instead of to the header), so that the real sweep do not
-** need to skip objects created between "now" and the start of the real
-** sweep.
-** Returns how many objects it swept.
+** The call to 'sweeplist' tries to make pointer point to an object
+** inside the list (instead of to the header), so that the real sweep do
+** not need to skip objects created between "now" and the start of the
+** real sweep.
 */
-static int entersweep (lua_State *L) {
+static void entersweep (lua_State *L) {
   global_State *g = G(L);
-  int n = 0;
   g->gcstate = GCSswpallgc;
   lua_assert(g->sweepgc == NULL);
-  g->sweepgc = sweeptolive(L, &g->allgc, &n);
-  return n;
+  g->sweepgc = sweeplist(L, &g->allgc, 1);
 }
 
 
@@ -978,7 +979,7 @@ void luaC_freeallobjects (lua_State *L) {
   global_State *g = G(L);
   separatetobefnz(g, 1);  /* separate all objects with finalizers */
   lua_assert(g->finobj == NULL);
-  callallpendingfinalizers(L, 0);
+  callallpendingfinalizers(L);
   lua_assert(g->tobefnz == NULL);
   g->currentwhite = WHITEBITS; /* this "white" makes all objects look dead */
   g->gckind = KGC_NORMAL;
@@ -1071,12 +1072,11 @@ static lu_mem singlestep (lua_State *L) {
     }
     case GCSatomic: {
       lu_mem work;
-      int sw;
       propagateall(g);  /* make sure gray list is empty */
       work = atomic(L);  /* work is what was traversed by 'atomic' */
-      sw = entersweep(L);
+      entersweep(L);
       g->GCestimate = gettotalbytes(g);  /* first estimate */;
-      return work + sw * GCSWEEPCOST;
+      return work;
     }
     case GCSswpallgc: {  /* sweep "regular" objects */
       return sweepstep(L, g, GCSswpfinobj, &g->finobj);

3rd/lua/lgc.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.h,v 2.90 2015/10/21 18:15:15 roberto Exp $
+** $Id: lgc.h,v 2.91.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -112,7 +112,7 @@
 	  condchangemem(L,pre,pos); }
 
 /* more often than not, 'pre'/'pos' are empty */
-#define luaC_checkGC(L)		luaC_condGC(L,,)
+#define luaC_checkGC(L)		luaC_condGC(L,(void)0,(void)0)
 
 
 #define luaC_barrier(L,p,v) (  \

3rd/lua/linit.c

@@ -1,5 +1,5 @@
 /*
-** $Id: linit.c,v 1.38 2015/01/05 13:48:33 roberto Exp $
+** $Id: linit.c,v 1.39.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Initialization of libraries for lua.c and other clients
 ** See Copyright Notice in lua.h
 */
@@ -18,10 +18,10 @@
 ** open the library, which is already linked to the application.
 ** For that, do the following code:
 **
-**  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
+**  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
 **  lua_pushcfunction(L, luaopen_modname);
 **  lua_setfield(L, -2, modname);
-**  lua_pop(L, 1);  // remove _PRELOAD table
+**  lua_pop(L, 1);  // remove PRELOAD table
 */
 
 #include "lprefix.h"

3rd/lua/liolib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: liolib.c,v 2.148 2015/11/23 11:36:11 roberto Exp $
+** $Id: liolib.c,v 2.151.1.1 2017/04/19 17:29:57 roberto Exp $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
@@ -37,10 +37,11 @@
 #endif
 
 /* Check whether 'mode' matches '[rwa]%+?[L_MODEEXT]*' */
-#define l_checkmode(mode) \
-	(*mode != '\0' && strchr("rwa", *(mode++)) != NULL &&	\
-	(*mode != '+' || (++mode, 1)) &&  /* skip if char is '+' */	\
-	(strspn(mode, L_MODEEXT) == strlen(mode)))
+static int l_checkmode (const char *mode) {
+  return (*mode != '\0' && strchr("rwa", *(mode++)) != NULL &&
+         (*mode != '+' || (++mode, 1)) &&  /* skip if char is '+' */
+         (strspn(mode, L_MODEEXT) == strlen(mode)));  /* check extensions */
+}
 
 #endif
 
@@ -205,11 +206,16 @@ static int aux_close (lua_State *L) {
 }
 
 
+static int f_close (lua_State *L) {
+  tofile(L);  /* make sure argument is an open stream */
+  return aux_close(L);
+}
+
+
 static int io_close (lua_State *L) {
   if (lua_isnone(L, 1))  /* no argument? */
     lua_getfield(L, LUA_REGISTRYINDEX, IO_OUTPUT);  /* use standard output */
-  tofile(L);  /* make sure argument is an open stream */
-  return aux_close(L);
+  return f_close(L);
 }
 
 
@@ -375,14 +381,17 @@ static int io_lines (lua_State *L) {
 
 
 /* maximum length of a numeral */
-#define MAXRN		200
+#if !defined (L_MAXLENNUM)
+#define L_MAXLENNUM     200
+#endif
+
 
 /* auxiliary structure used by 'read_number' */
 typedef struct {
   FILE *f;  /* file being read */
   int c;  /* current character (look ahead) */
   int n;  /* number of elements in buffer 'buff' */
-  char buff[MAXRN + 1];  /* +1 for ending '\0' */
+  char buff[L_MAXLENNUM + 1];  /* +1 for ending '\0' */
 } RN;
 
 
@@ -390,7 +399,7 @@ typedef struct {
 ** Add current char to buffer (if not out of space) and read next one
 */
 static int nextc (RN *rn) {
-  if (rn->n >= MAXRN) {  /* buffer overflow? */
+  if (rn->n >= L_MAXLENNUM) {  /* buffer overflow? */
     rn->buff[0] = '\0';  /* invalidate result */
     return 0;  /* fail */
   }
@@ -403,10 +412,10 @@ static int nextc (RN *rn) {
 
 
 /*
-** Accept current char if it is in 'set' (of size 1 or 2)
+** Accept current char if it is in 'set' (of size 2)
 */
 static int test2 (RN *rn, const char *set) {
-  if (rn->c == set[0] || (rn->c == set[1] && rn->c != '\0'))
+  if (rn->c == set[0] || rn->c == set[1])
     return nextc(rn);
   else return 0;
 }
@@ -435,11 +444,11 @@ static int read_number (lua_State *L, FILE *f) {
   char decp[2];
   rn.f = f; rn.n = 0;
   decp[0] = lua_getlocaledecpoint();  /* get decimal point from locale */
-  decp[1] = '\0';
+  decp[1] = '.';  /* always accept a dot */
   l_lockfile(rn.f);
   do { rn.c = l_getc(rn.f); } while (isspace(rn.c));  /* skip spaces */
   test2(&rn, "-+");  /* optional signal */
-  if (test2(&rn, "0")) {
+  if (test2(&rn, "00")) {
     if (test2(&rn, "xX")) hex = 1;  /* numeral is hexadecimal */
     else count = 1;  /* count initial '0' as a valid digit */
   }
@@ -615,8 +624,10 @@ static int g_write (lua_State *L, FILE *f, int arg) {
     if (lua_type(L, arg) == LUA_TNUMBER) {
       /* optimization: could be done exactly as for strings */
       int len = lua_isinteger(L, arg)
-                ? fprintf(f, LUA_INTEGER_FMT, lua_tointeger(L, arg))
-                : fprintf(f, LUA_NUMBER_FMT, lua_tonumber(L, arg));
+                ? fprintf(f, LUA_INTEGER_FMT,
+                             (LUAI_UACINT)lua_tointeger(L, arg))
+                : fprintf(f, LUA_NUMBER_FMT,
+                             (LUAI_UACNUMBER)lua_tonumber(L, arg));
       status = status && (len > 0);
     }
     else {
@@ -706,7 +717,7 @@ static const luaL_Reg iolib[] = {
 ** methods for file handles
 */
 static const luaL_Reg flib[] = {
-  {"close", io_close},
+  {"close", f_close},
   {"flush", f_flush},
   {"lines", f_lines},
   {"read", f_read},

3rd/lua/llex.c

@@ -1,5 +1,5 @@
 /*
-** $Id: llex.c,v 2.95 2015/11/19 19:16:22 roberto Exp $
+** $Id: llex.c,v 2.96.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
@@ -162,7 +162,6 @@ static void inclinenumber (LexState *ls) {
 void luaX_setinput (lua_State *L, LexState *ls, ZIO *z, TString *source,
                     int firstchar) {
   ls->t.token = 0;
-  ls->decpoint = '.';
   ls->L = L;
   ls->current = firstchar;
   ls->lookahead.token = TK_EOS;  /* no look-ahead token */
@@ -207,35 +206,6 @@ static int check_next2 (LexState *ls, const char *set) {
 }
 
 
-/*
-** change all characters 'from' in buffer to 'to'
-*/
-static void buffreplace (LexState *ls, char from, char to) {
-  if (from != to) {
-    size_t n = luaZ_bufflen(ls->buff);
-    char *p = luaZ_buffer(ls->buff);
-    while (n--)
-      if (p[n] == from) p[n] = to;
-  }
-}
-
-
-/*
-** in case of format error, try to change decimal point separator to
-** the one defined in the current locale and check again
-*/
-static void trydecpoint (LexState *ls, TValue *o) {
-  char old = ls->decpoint;
-  ls->decpoint = lua_getlocaledecpoint();
-  buffreplace(ls, old, ls->decpoint);  /* try new decimal separator */
-  if (luaO_str2num(luaZ_buffer(ls->buff), o) == 0) {
-    /* format error with correct decimal point: no more options */
-    buffreplace(ls, ls->decpoint, '.');  /* undo change (for error message) */
-    lexerror(ls, "malformed number", TK_FLT);
-  }
-}
-
-
 /* LUA_NUMBER */
 /*
 ** this function is quite liberal in what it accepts, as 'luaO_str2num'
@@ -259,9 +229,8 @@ static int read_numeral (LexState *ls, SemInfo *seminfo) {
     else break;
   }
   save(ls, '\0');
-  buffreplace(ls, '.', ls->decpoint);  /* follow locale for decimal point */
   if (luaO_str2num(luaZ_buffer(ls->buff), &obj) == 0)  /* format error? */
-    trydecpoint(ls, &obj); /* try to update decimal point separator */
+    lexerror(ls, "malformed number", TK_FLT);
   if (ttisinteger(&obj)) {
     seminfo->i = ivalue(&obj);
     return TK_INT;

3rd/lua/llex.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llex.h,v 1.78 2014/10/29 15:38:24 roberto Exp $
+** $Id: llex.h,v 1.79.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
@@ -69,7 +69,6 @@ typedef struct LexState {
   struct Dyndata *dyd;  /* dynamic structures used by the parser */
   TString *source;  /* current source name */
   TString *envn;  /* environment variable name */
-  char decpoint;  /* locale decimal point */
 } LexState;
 
 

3rd/lua/llimits.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llimits.h,v 1.141 2015/11/19 19:16:22 roberto Exp $
+** $Id: llimits.h,v 1.141.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Limits, basic types, and some other 'installation-dependent' definitions
 ** See Copyright Notice in lua.h
 */

3rd/lua/lmathlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lmathlib.c,v 1.117 2015/10/02 15:39:23 roberto Exp $
+** $Id: lmathlib.c,v 1.119.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Standard mathematical library
 ** See Copyright Notice in lua.h
 */
@@ -184,10 +184,13 @@ static int math_log (lua_State *L) {
   else {
     lua_Number base = luaL_checknumber(L, 2);
 #if !defined(LUA_USE_C89)
-    if (base == 2.0) res = l_mathop(log2)(x); else
+    if (base == l_mathop(2.0))
+      res = l_mathop(log2)(x); else
 #endif
-    if (base == 10.0) res = l_mathop(log10)(x);
-    else res = l_mathop(log)(x)/l_mathop(log)(base);
+    if (base == l_mathop(10.0))
+      res = l_mathop(log10)(x);
+    else
+      res = l_mathop(log)(x)/l_mathop(log)(base);
   }
   lua_pushnumber(L, res);
   return 1;
@@ -262,7 +265,7 @@ static int math_random (lua_State *L) {
     default: return luaL_error(L, "wrong number of arguments");
   }
   /* random integer in the interval [low, up] */
-  luaL_argcheck(L, low <= up, 1, "interval is empty"); 
+  luaL_argcheck(L, low <= up, 1, "interval is empty");
   luaL_argcheck(L, low >= 0 || up <= LUA_MAXINTEGER + low, 1,
                    "interval too large");
   r *= (double)(up - low) + 1.0;
@@ -281,9 +284,9 @@ static int math_randomseed (lua_State *L) {
 static int math_type (lua_State *L) {
   if (lua_type(L, 1) == LUA_TNUMBER) {
       if (lua_isinteger(L, 1))
-        lua_pushliteral(L, "integer"); 
+        lua_pushliteral(L, "integer");
       else
-        lua_pushliteral(L, "float"); 
+        lua_pushliteral(L, "float");
   }
   else {
     luaL_checkany(L, 1);

3rd/lua/lmem.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lmem.c,v 1.91 2015/03/06 19:45:54 roberto Exp $
+** $Id: lmem.c,v 1.91.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */

3rd/lua/lmem.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lmem.h,v 1.43 2014/12/19 17:26:14 roberto Exp $
+** $Id: lmem.h,v 1.43.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */

3rd/lua/loadlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: loadlib.c,v 1.127 2015/11/23 11:30:45 roberto Exp $
+** $Id: loadlib.c,v 1.130.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Dynamic library loader for Lua
 ** See Copyright Notice in lua.h
 **
@@ -25,40 +25,9 @@
 
 
 /*
-** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment
-** variables that Lua check to set its paths.
-*/
-#if !defined(LUA_PATH_VAR)
-#define LUA_PATH_VAR	"LUA_PATH"
-#endif
-
-#if !defined(LUA_CPATH_VAR)
-#define LUA_CPATH_VAR	"LUA_CPATH"
-#endif
-
-#define LUA_PATHSUFFIX		"_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
-
-#define LUA_PATHVARVERSION		LUA_PATH_VAR LUA_PATHSUFFIX
-#define LUA_CPATHVARVERSION		LUA_CPATH_VAR LUA_PATHSUFFIX
-
-/*
-** LUA_PATH_SEP is the character that separates templates in a path.
-** LUA_PATH_MARK is the string that marks the substitution points in a
-** template.
-** LUA_EXEC_DIR in a Windows path is replaced by the executable's
-** directory.
 ** LUA_IGMARK is a mark to ignore all before it when building the
 ** luaopen_ function name.
 */
-#if !defined (LUA_PATH_SEP)
-#define LUA_PATH_SEP		";"
-#endif
-#if !defined (LUA_PATH_MARK)
-#define LUA_PATH_MARK		"?"
-#endif
-#if !defined (LUA_EXEC_DIR)
-#define LUA_EXEC_DIR		"!"
-#endif
 #if !defined (LUA_IGMARK)
 #define LUA_IGMARK		"-"
 #endif
@@ -94,7 +63,8 @@ static const int CLIBS = 0;
 
 #define LIB_FAIL	"open"
 
-#define setprogdir(L)		((void)0)
+
+#define setprogdir(L)           ((void)0)
 
 
 /*
@@ -179,7 +149,6 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 
 #include <windows.h>
 
-#undef setprogdir
 
 /*
 ** optional flags for LoadLibraryEx
@@ -189,21 +158,30 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 #endif
 
 
+#undef setprogdir
+
+
+/*
+** Replace in the path (on the top of the stack) any occurrence
+** of LUA_EXEC_DIR with the executable's path.
+*/
 static void setprogdir (lua_State *L) {
   char buff[MAX_PATH + 1];
   char *lb;
   DWORD nsize = sizeof(buff)/sizeof(char);
-  DWORD n = GetModuleFileNameA(NULL, buff, nsize);
+  DWORD n = GetModuleFileNameA(NULL, buff, nsize);  /* get exec. name */
   if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL)
     luaL_error(L, "unable to get ModuleFileName");
   else {
-    *lb = '\0';
+    *lb = '\0';  /* cut name on the last '\\' to get the path */
     luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff);
     lua_remove(L, -2);  /* remove original string */
   }
 }
 
 
+
+
 static void pusherror (lua_State *L) {
   int error = GetLastError();
   char buffer[128];
@@ -272,6 +250,67 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) {
 #endif				/* } */
 
 
+/*
+** {==================================================================
+** Set Paths
+** ===================================================================
+*/
+
+/*
+** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment
+** variables that Lua check to set its paths.
+*/
+#if !defined(LUA_PATH_VAR)
+#define LUA_PATH_VAR    "LUA_PATH"
+#endif
+
+#if !defined(LUA_CPATH_VAR)
+#define LUA_CPATH_VAR   "LUA_CPATH"
+#endif
+
+
+#define AUXMARK         "\1"	/* auxiliary mark */
+
+
+/*
+** return registry.LUA_NOENV as a boolean
+*/
+static int noenv (lua_State *L) {
+  int b;
+  lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
+  b = lua_toboolean(L, -1);
+  lua_pop(L, 1);  /* remove value */
+  return b;
+}
+
+
+/*
+** Set a path
+*/
+static void setpath (lua_State *L, const char *fieldname,
+                                   const char *envname,
+                                   const char *dft) {
+  const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX);
+  const char *path = getenv(nver);  /* use versioned name */
+  if (path == NULL)  /* no environment variable? */
+    path = getenv(envname);  /* try unversioned name */
+  if (path == NULL || noenv(L))  /* no environment variable? */
+    lua_pushstring(L, dft);  /* use default */
+  else {
+    /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */
+    path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP,
+                              LUA_PATH_SEP AUXMARK LUA_PATH_SEP);
+    luaL_gsub(L, path, AUXMARK, dft);
+    lua_remove(L, -2); /* remove result from 1st 'gsub' */
+  }
+  setprogdir(L);
+  lua_setfield(L, -3, fieldname);  /* package[fieldname] = path value */
+  lua_pop(L, 1);  /* pop versioned variable name */
+}
+
+/* }================================================================== */
+
+
 /*
 ** return registry.CLIBS[path]
 */
@@ -520,7 +559,7 @@ static int searcher_Croot (lua_State *L) {
 
 static int searcher_preload (lua_State *L) {
   const char *name = luaL_checkstring(L, 1);
-  lua_getfield(L, LUA_REGISTRYINDEX, "_PRELOAD");
+  lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
   if (lua_getfield(L, -1, name) == LUA_TNIL)  /* not found? */
     lua_pushfstring(L, "\n\tno field package.preload['%s']", name);
   return 1;
@@ -557,9 +596,9 @@ static void findloader (lua_State *L, const char *name) {
 
 static int ll_require (lua_State *L) {
   const char *name = luaL_checkstring(L, 1);
-  lua_settop(L, 1);  /* _LOADED table will be at index 2 */
-  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
-  lua_getfield(L, 2, name);  /* _LOADED[name] */
+  lua_settop(L, 1);  /* LOADED table will be at index 2 */
+  lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
+  lua_getfield(L, 2, name);  /* LOADED[name] */
   if (lua_toboolean(L, -1))  /* is it there? */
     return 1;  /* package is already loaded */
   /* else must load package */
@@ -569,11 +608,11 @@ static int ll_require (lua_State *L) {
   lua_insert(L, -2);  /* name is 1st argument (before search data) */
   lua_call(L, 2, 1);  /* run loader to load module */
   if (!lua_isnil(L, -1))  /* non-nil return? */
-    lua_setfield(L, 2, name);  /* _LOADED[name] = returned value */
+    lua_setfield(L, 2, name);  /* LOADED[name] = returned value */
   if (lua_getfield(L, 2, name) == LUA_TNIL) {   /* module set no value? */
     lua_pushboolean(L, 1);  /* use true as result */
     lua_pushvalue(L, -1);  /* extra copy to be returned */
-    lua_setfield(L, 2, name);  /* _LOADED[name] = true */
+    lua_setfield(L, 2, name);  /* LOADED[name] = true */
   }
   return 1;
 }
@@ -666,41 +705,6 @@ static int ll_seeall (lua_State *L) {
 
 
 
-/* auxiliary mark (for internal use) */
-#define AUXMARK		"\1"
-
-
-/*
-** return registry.LUA_NOENV as a boolean
-*/
-static int noenv (lua_State *L) {
-  int b;
-  lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV");
-  b = lua_toboolean(L, -1);
-  lua_pop(L, 1);  /* remove value */
-  return b;
-}
-
-
-static void setpath (lua_State *L, const char *fieldname, const char *envname1,
-                                   const char *envname2, const char *def) {
-  const char *path = getenv(envname1);
-  if (path == NULL)  /* no environment variable? */
-    path = getenv(envname2);  /* try alternative name */
-  if (path == NULL || noenv(L))  /* no environment variable? */
-    lua_pushstring(L, def);  /* use default */
-  else {
-    /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */
-    path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP,
-                              LUA_PATH_SEP AUXMARK LUA_PATH_SEP);
-    luaL_gsub(L, path, AUXMARK, def);
-    lua_remove(L, -2);
-  }
-  setprogdir(L);
-  lua_setfield(L, -2, fieldname);
-}
-
-
 static const luaL_Reg pk_funcs[] = {
   {"loadlib", ll_loadlib},
   {"searchpath", ll_searchpath},
@@ -764,19 +768,18 @@ LUAMOD_API int luaopen_package (lua_State *L) {
   createclibstable(L);
   luaL_newlib(L, pk_funcs);  /* create 'package' table */
   createsearcherstable(L);
-  /* set field 'path' */
-  setpath(L, "path", LUA_PATHVARVERSION, LUA_PATH_VAR, LUA_PATH_DEFAULT);
-  /* set field 'cpath' */
-  setpath(L, "cpath", LUA_CPATHVARVERSION, LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
+  /* set paths */
+  setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT);
+  setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT);
   /* store config information */
   lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n"
                      LUA_EXEC_DIR "\n" LUA_IGMARK "\n");
   lua_setfield(L, -2, "config");
   /* set field 'loaded' */
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
+  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
   lua_setfield(L, -2, "loaded");
   /* set field 'preload' */
-  luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD");
+  luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE);
   lua_setfield(L, -2, "preload");
   lua_pushglobaltable(L);
   lua_pushvalue(L, -2);  /* set 'package' as upvalue for next lib */

3rd/lua/lobject.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.c,v 2.108 2015/11/02 16:09:30 roberto Exp $
+** $Id: lobject.c,v 2.113.1.1 2017/04/19 17:29:57 roberto Exp $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -243,20 +243,59 @@ static lua_Number lua_strx2number (const char *s, char **endptr) {
 /* }====================================================== */
 
 
-static const char *l_str2d (const char *s, lua_Number *result) {
+/* maximum length of a numeral */
+#if !defined (L_MAXLENNUM)
+#define L_MAXLENNUM	200
+#endif
+
+static const char *l_str2dloc (const char *s, lua_Number *result, int mode) {
   char *endptr;
-  if (strpbrk(s, "nN"))  /* reject 'inf' and 'nan' */
-    return NULL;
-  else if (strpbrk(s, "xX"))  /* hex? */
-    *result = lua_strx2number(s, &endptr);
-  else
-    *result = lua_str2number(s, &endptr);
-  if (endptr == s) return NULL;  /* nothing recognized */
-  while (lisspace(cast_uchar(*endptr))) endptr++;
-  return (*endptr == '\0' ? endptr : NULL);  /* OK if no trailing characters */
+  *result = (mode == 'x') ? lua_strx2number(s, &endptr)  /* try to convert */
+                          : lua_str2number(s, &endptr);
+  if (endptr == s) return NULL;  /* nothing recognized? */
+  while (lisspace(cast_uchar(*endptr))) endptr++;  /* skip trailing spaces */
+  return (*endptr == '\0') ? endptr : NULL;  /* OK if no trailing characters */
 }
 
 
+/*
+** Convert string 's' to a Lua number (put in 'result'). Return NULL
+** on fail or the address of the ending '\0' on success.
+** 'pmode' points to (and 'mode' contains) special things in the string:
+** - 'x'/'X' means an hexadecimal numeral
+** - 'n'/'N' means 'inf' or 'nan' (which should be rejected)
+** - '.' just optimizes the search for the common case (nothing special)
+** This function accepts both the current locale or a dot as the radix
+** mark. If the convertion fails, it may mean number has a dot but
+** locale accepts something else. In that case, the code copies 's'
+** to a buffer (because 's' is read-only), changes the dot to the
+** current locale radix mark, and tries to convert again.
+*/
+static const char *l_str2d (const char *s, lua_Number *result) {
+  const char *endptr;
+  const char *pmode = strpbrk(s, ".xXnN");
+  int mode = pmode ? ltolower(cast_uchar(*pmode)) : 0;
+  if (mode == 'n')  /* reject 'inf' and 'nan' */
+    return NULL;
+  endptr = l_str2dloc(s, result, mode);  /* try to convert */
+  if (endptr == NULL) {  /* failed? may be a different locale */
+    char buff[L_MAXLENNUM + 1];
+    const char *pdot = strchr(s, '.');
+    if (strlen(s) > L_MAXLENNUM || pdot == NULL)
+      return NULL;  /* string too long or no dot; fail */
+    strcpy(buff, s);  /* copy string to buffer */
+    buff[pdot - s] = lua_getlocaledecpoint();  /* correct decimal point */
+    endptr = l_str2dloc(buff, result, mode);  /* try again */
+    if (endptr != NULL)
+      endptr = s + (endptr - buff);  /* make relative to 's' */
+  }
+  return endptr;
+}
+
+
+#define MAXBY10		cast(lua_Unsigned, LUA_MAXINTEGER / 10)
+#define MAXLASTD	cast_int(LUA_MAXINTEGER % 10)
+
 static const char *l_str2int (const char *s, lua_Integer *result) {
   lua_Unsigned a = 0;
   int empty = 1;
@@ -273,7 +312,10 @@ static const char *l_str2int (const char *s, lua_Integer *result) {
   }
   else {  /* decimal */
     for (; lisdigit(cast_uchar(*s)); s++) {
-      a = a * 10 + *s - '0';
+      int d = *s - '0';
+      if (a >= MAXBY10 && (a > MAXBY10 || d > MAXLASTD + neg))  /* overflow? */
+        return NULL;  /* do not accept it (as integer) */
+      a = a * 10 + d;
       empty = 0;
     }
   }
@@ -351,8 +393,10 @@ static void pushstr (lua_State *L, const char *str, size_t l) {
 }
 
 
-/* this function handles only '%d', '%c', '%f', '%p', and '%s' 
-   conventional formats, plus Lua-specific '%I' and '%U' */
+/*
+** this function handles only '%d', '%c', '%f', '%p', and '%s'
+   conventional formats, plus Lua-specific '%I' and '%U'
+*/
 const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
   int n = 0;
   for (;;) {
@@ -360,13 +404,13 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
     if (e == NULL) break;
     pushstr(L, fmt, e - fmt);
     switch (*(e+1)) {
-      case 's': {
+      case 's': {  /* zero-terminated string */
         const char *s = va_arg(argp, char *);
         if (s == NULL) s = "(null)";
         pushstr(L, s, strlen(s));
         break;
       }
-      case 'c': {
+      case 'c': {  /* an 'int' as a character */
         char buff = cast(char, va_arg(argp, int));
         if (lisprint(cast_uchar(buff)))
           pushstr(L, &buff, 1);
@@ -374,28 +418,29 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
           luaO_pushfstring(L, "<\\%d>", cast_uchar(buff));
         break;
       }
-      case 'd': {
+      case 'd': {  /* an 'int' */
         setivalue(L->top, va_arg(argp, int));
         goto top2str;
       }
-      case 'I': {
+      case 'I': {  /* a 'lua_Integer' */
         setivalue(L->top, cast(lua_Integer, va_arg(argp, l_uacInt)));
         goto top2str;
       }
-      case 'f': {
+      case 'f': {  /* a 'lua_Number' */
         setfltvalue(L->top, cast_num(va_arg(argp, l_uacNumber)));
-      top2str:
+      top2str:  /* convert the top element to a string */
         luaD_inctop(L);
         luaO_tostring(L, L->top - 1);
         break;
       }
-      case 'p': {
+      case 'p': {  /* a pointer */
         char buff[4*sizeof(void *) + 8]; /* should be enough space for a '%p' */
-        int l = l_sprintf(buff, sizeof(buff), "%p", va_arg(argp, void *));
+        void *p = va_arg(argp, void *);
+        int l = lua_pointer2str(buff, sizeof(buff), p);
         pushstr(L, buff, l);
         break;
       }
-      case 'U': {
+      case 'U': {  /* an 'int' as a UTF-8 sequence */
         char buff[UTF8BUFFSZ];
         int l = luaO_utf8esc(buff, cast(long, va_arg(argp, long)));
         pushstr(L, buff + UTF8BUFFSZ - l, l);

3rd/lua/lobject.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.h,v 2.116 2015/11/03 18:33:10 roberto Exp $
+** $Id: lobject.h,v 2.117.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Type definitions for Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -402,7 +402,7 @@ typedef struct LocVar {
 
 typedef struct SharedProto {
   lu_byte numparams;  /* number of fixed parameters */
-  lu_byte is_vararg;  /* 2: declared vararg; 1: uses vararg */
+  lu_byte is_vararg;
   lu_byte maxstacksize;  /* number of registers needed by this function */
   int sizeupvalues;  /* size of 'upvalues' */
   int sizek;  /* size of 'k' */

3rd/lua/lopcodes.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lopcodes.c,v 1.55 2015/01/05 13:48:33 roberto Exp $
+** $Id: lopcodes.c,v 1.55.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Opcodes for Lua virtual machine
 ** See Copyright Notice in lua.h
 */

3rd/lua/lopcodes.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lopcodes.h,v 1.148 2014/10/25 11:50:46 roberto Exp $
+** $Id: lopcodes.h,v 1.149.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Opcodes for Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -139,7 +139,9 @@ enum OpMode {iABC, iABx, iAsBx, iAx};  /* basic instruction format */
 /* gets the index of the constant */
 #define INDEXK(r)	((int)(r) & ~BITRK)
 
+#if !defined(MAXINDEXRK)  /* (for debugging only) */
 #define MAXINDEXRK	(BITRK - 1)
+#endif
 
 /* code a constant index as a RK value */
 #define RKASK(x)	((x) | BITRK)

3rd/lua/loslib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: loslib.c,v 1.60 2015/11/19 19:16:22 roberto Exp $
+** $Id: loslib.c,v 1.65.1.1 2017/04/19 17:29:57 roberto Exp $
 ** Standard Operating System library
 ** See Copyright Notice in lua.h
 */
@@ -24,18 +24,29 @@
 
 /*
 ** {==================================================================
-** list of valid conversion specifiers for the 'strftime' function
+** List of valid conversion specifiers for the 'strftime' function;
+** options are grouped by length; group of length 2 start with '||'.
 ** ===================================================================
 */
 #if !defined(LUA_STRFTIMEOPTIONS)	/* { */
 
-#if defined(LUA_USE_C89)
-#define LUA_STRFTIMEOPTIONS	{ "aAbBcdHIjmMpSUwWxXyYz%", "" }
+/* options for ANSI C 89 (only 1-char options) */
+#define L_STRFTIMEC89		"aAbBcdHIjmMpSUwWxXyYZ%"
+
+/* options for ISO C 99 and POSIX */
+#define L_STRFTIMEC99 "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%" \
+    "||" "EcECExEXEyEY" "OdOeOHOIOmOMOSOuOUOVOwOWOy"  /* two-char options */
+
+/* options for Windows */
+#define L_STRFTIMEWIN "aAbBcdHIjmMpSUwWxXyYzZ%" \
+    "||" "#c#x#d#H#I#j#m#M#S#U#w#W#y#Y"  /* two-char options */
+
+#if defined(LUA_USE_WINDOWS)
+#define LUA_STRFTIMEOPTIONS	L_STRFTIMEWIN
+#elif defined(LUA_USE_C89)
+#define LUA_STRFTIMEOPTIONS	L_STRFTIMEC89
 #else  /* C99 specification */
-#define LUA_STRFTIMEOPTIONS \
-	{ "aAbBcCdDeFgGhHIjmMnprRStTuUVwWxXyYzZ%", "", \
-	  "E", "cCxXyY",  \
-	  "O", "deHImMSuUVwWy" }
+#define LUA_STRFTIMEOPTIONS	L_STRFTIMEC99
 #endif
 
 #endif					/* } */
@@ -195,6 +206,23 @@ static void setboolfield (lua_State *L, const char *key, int value) {
   lua_setfield(L, -2, key);
 }
 
+
+/*
+** Set all fields from structure 'tm' in the table on top of the stack
+*/
+static void setallfields (lua_State *L, struct tm *stm) {
+  setfield(L, "sec", stm->tm_sec);
+  setfield(L, "min", stm->tm_min);
+  setfield(L, "hour", stm->tm_hour);
+  setfield(L, "day", stm->tm_mday);
+  setfield(L, "month", stm->tm_mon + 1);
+  setfield(L, "year", stm->tm_year + 1900);
+  setfield(L, "wday", stm->tm_wday + 1);
+  setfield(L, "yday", stm->tm_yday + 1);
+  setboolfield(L, "isdst", stm->tm_isdst);
+}
+
+
 static int getboolfield (lua_State *L, const char *key) {
   int res;
   res = (lua_getfield(L, -1, key) == LUA_TNIL) ? -1 : lua_toboolean(L, -1);
@@ -210,18 +238,18 @@ static int getboolfield (lua_State *L, const char *key) {
 
 static int getfield (lua_State *L, const char *key, int d, int delta) {
   int isnum;
-  int t = lua_getfield(L, -1, key);
+  int t = lua_getfield(L, -1, key);  /* get field and its type */
   lua_Integer res = lua_tointegerx(L, -1, &isnum);
-  if (!isnum) {  /* field is not a number? */
+  if (!isnum) {  /* field is not an integer? */
     if (t != LUA_TNIL)  /* some other value? */
-      return luaL_error(L, "field '%s' not an integer", key);
+      return luaL_error(L, "field '%s' is not an integer", key);
     else if (d < 0)  /* absent field; no default? */
       return luaL_error(L, "field '%s' missing in date table", key);
     res = d;
   }
   else {
     if (!(-L_MAXDATEFIELD <= res && res <= L_MAXDATEFIELD))
-      return luaL_error(L, "field '%s' out-of-bounds", key);
+      return luaL_error(L, "field '%s' is out-of-bound", key);
     res -= delta;
   }
   lua_pop(L, 1);
@@ -229,22 +257,17 @@ static int getfield (lua_State *L, const char *key, int d, int delta) {
 }
 
 
-static const char *checkoption (lua_State *L, const char *conv, char *buff) {
-  static const char *const options[] = LUA_STRFTIMEOPTIONS;
-  unsigned int i;
-  for (i = 0; i < sizeof(options)/sizeof(options[0]); i += 2) {
-    if (*conv != '\0' && strchr(options[i], *conv) != NULL) {
-      buff[1] = *conv;
-      if (*options[i + 1] == '\0') {  /* one-char conversion specifier? */
-        buff[2] = '\0';  /* end buffer */
-        return conv + 1;
-      }
-      else if (*(conv + 1) != '\0' &&
-               strchr(options[i + 1], *(conv + 1)) != NULL) {
-        buff[2] = *(conv + 1);  /* valid two-char conversion specifier */
-        buff[3] = '\0';  /* end buffer */
-        return conv + 2;
-      }
+static const char *checkoption (lua_State *L, const char *conv,
+                                ptrdiff_t convlen, char *buff) {
+  const char *option = LUA_STRFTIMEOPTIONS;
+  int oplen = 1;  /* length of options being checked */
+  for (; *option != '\0' && oplen <= convlen; option += oplen) {
+    if (*option == '|')  /* next block? */
+      oplen++;  /* will check options with next length (+1) */
+    else if (memcmp(conv, option, oplen) == 0) {  /* match? */
+      memcpy(buff, conv, oplen);  /* copy valid option to buffer */
+      buff[oplen] = '\0';
+      return conv + oplen;  /* return next item */
     }
   }
   luaL_argerror(L, 1,
@@ -258,8 +281,10 @@ static const char *checkoption (lua_State *L, const char *conv, char *buff) {
 
 
 static int os_date (lua_State *L) {
-  const char *s = luaL_optstring(L, 1, "%c");
+  size_t slen;
+  const char *s = luaL_optlstring(L, 1, "%c", &slen);
   time_t t = luaL_opt(L, l_checktime, 2, time(NULL));
+  const char *se = s + slen;  /* 's' end */
   struct tm tmr, *stm;
   if (*s == '!') {  /* UTC? */
     stm = l_gmtime(&t, &tmr);
@@ -268,31 +293,25 @@ static int os_date (lua_State *L) {
   else
     stm = l_localtime(&t, &tmr);
   if (stm == NULL)  /* invalid date? */
-    luaL_error(L, "time result cannot be represented in this installation");
+    return luaL_error(L,
+                 "time result cannot be represented in this installation");
   if (strcmp(s, "*t") == 0) {
     lua_createtable(L, 0, 9);  /* 9 = number of fields */
-    setfield(L, "sec", stm->tm_sec);
-    setfield(L, "min", stm->tm_min);
-    setfield(L, "hour", stm->tm_hour);
-    setfield(L, "day", stm->tm_mday);
-    setfield(L, "month", stm->tm_mon+1);
-    setfield(L, "year", stm->tm_year+1900);
-    setfield(L, "wday", stm->tm_wday+1);
-    setfield(L, "yday", stm->tm_yday+1);
-    setboolfield(L, "isdst", stm->tm_isdst);
+    setallfields(L, stm);
   }
   else {
-    char cc[4];
+    char cc[4];  /* buffer for individual conversion specifiers */
     luaL_Buffer b;
     cc[0] = '%';
     luaL_buffinit(L, &b);
-    while (*s) {
+    while (s < se) {
       if (*s != '%')  /* not a conversion specifier? */
         luaL_addchar(&b, *s++);
       else {
         size_t reslen;
         char *buff = luaL_prepbuffsize(&b, SIZETIMEFMT);
-        s = checkoption(L, s + 1, cc);
+        s++;  /* skip '%' */
+        s = checkoption(L, s, se - s, cc + 1);  /* copy specifier to 'cc' */
         reslen = strftime(buff, SIZETIMEFMT, cc, stm);
         luaL_addsize(&b, reslen);
       }
@@ -319,9 +338,11 @@ static int os_time (lua_State *L) {
     ts.tm_year = getfield(L, "year", -1, 1900);
     ts.tm_isdst = getboolfield(L, "isdst");
     t = mktime(&ts);
+    setallfields(L, &ts);  /* update fields with normalized values */
   }
   if (t != (time_t)(l_timet)t || t == (time_t)(-1))
-    luaL_error(L, "time result cannot be represented in this installation");
+    return luaL_error(L,
+                  "time result cannot be represented in this installation");
   l_pushtime(L, t);
   return 1;
 }

3rd/lua/lparser.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lparser.c,v 2.149 2015/11/02 16:09:30 roberto Exp $
+** $Id: lparser.c,v 2.155.1.2 2017/04/29 18:11:40 roberto Exp $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
@@ -165,7 +165,8 @@ static int registerlocalvar (LexState *ls, TString *varname) {
   int oldsize = f->sizelocvars;
   luaM_growvector(ls->L, f->locvars, fs->nlocvars, f->sizelocvars,
                   LocVar, SHRT_MAX, "local variables");
-  while (oldsize < f->sizelocvars) f->locvars[oldsize++].varname = NULL;
+  while (oldsize < f->sizelocvars)
+    f->locvars[oldsize++].varname = NULL;
   f->locvars[fs->nlocvars].varname = varname;
   luaC_objbarrier(ls->L, fp, varname);
   return fs->nlocvars++;
@@ -232,7 +233,8 @@ static int newupvalue (FuncState *fs, TString *name, expdesc *v) {
   checklimit(fs, fs->nups + 1, MAXUPVAL, "upvalues");
   luaM_growvector(fs->ls->L, f->upvalues, fs->nups, f->sizeupvalues,
                   Upvaldesc, MAXUPVAL, "upvalues");
-  while (oldsize < f->sizeupvalues) f->upvalues[oldsize++].name = NULL;
+  while (oldsize < f->sizeupvalues)
+    f->upvalues[oldsize++].name = NULL;
   f->upvalues[fs->nups].instack = (v->k == VLOCAL);
   f->upvalues[fs->nups].idx = cast_byte(v->u.info);
   f->upvalues[fs->nups].name = name;
@@ -257,7 +259,8 @@ static int searchvar (FuncState *fs, TString *n) {
 */
 static void markupval (FuncState *fs, int level) {
   BlockCnt *bl = fs->bl;
-  while (bl->nactvar > level) bl = bl->previous;
+  while (bl->nactvar > level)
+    bl = bl->previous;
   bl->upval = 1;
 }
 
@@ -266,27 +269,26 @@ static void markupval (FuncState *fs, int level) {
   Find variable with given name 'n'. If it is an upvalue, add this
   upvalue into all intermediate functions.
 */
-static int singlevaraux (FuncState *fs, TString *n, expdesc *var, int base) {
+static void singlevaraux (FuncState *fs, TString *n, expdesc *var, int base) {
   if (fs == NULL)  /* no more levels? */
-    return VVOID;  /* default is global */
+    init_exp(var, VVOID, 0);  /* default is global */
   else {
     int v = searchvar(fs, n);  /* look up locals at current level */
     if (v >= 0) {  /* found? */
       init_exp(var, VLOCAL, v);  /* variable is local */
       if (!base)
         markupval(fs, v);  /* local will be used as an upval */
-      return VLOCAL;
     }
     else {  /* not found as local at current level; try upvalues */
       int idx = searchupvalue(fs, n);  /* try existing upvalues */
       if (idx < 0) {  /* not found? */
-        if (singlevaraux(fs->prev, n, var, 0) == VVOID) /* try upper levels */
-          return VVOID;  /* not found; is a global */
+        singlevaraux(fs->prev, n, var, 0);  /* try upper levels */
+        if (var->k == VVOID)  /* not found? */
+          return;  /* it is a global */
         /* else was LOCAL or UPVAL */
         idx  = newupvalue(fs, n, var);  /* will be a new upvalue */
       }
-      init_exp(var, VUPVAL, idx);
-      return VUPVAL;
+      init_exp(var, VUPVAL, idx);  /* new or old upvalue */
     }
   }
 }
@@ -295,10 +297,11 @@ static int singlevaraux (FuncState *fs, TString *n, expdesc *var, int base) {
 static void singlevar (LexState *ls, expdesc *var) {
   TString *varname = str_checkname(ls);
   FuncState *fs = ls->fs;
-  if (singlevaraux(fs, varname, var, 1) == VVOID) {  /* global name? */
+  singlevaraux(fs, varname, var, 1);
+  if (var->k == VVOID) {  /* global name? */
     expdesc key;
     singlevaraux(fs, ls->envn, var, 1);  /* get environment variable */
-    lua_assert(var->k == VLOCAL || var->k == VUPVAL);
+    lua_assert(var->k != VVOID);  /* this one must exist */
     codestring(ls, &key, varname);  /* key is variable name */
     luaK_indexed(fs, var, &key);  /* env[varname] */
   }
@@ -322,6 +325,8 @@ static void adjust_assign (LexState *ls, int nvars, int nexps, expdesc *e) {
       luaK_nil(fs, reg, extra);
     }
   }
+  if (nexps > nvars)
+    ls->fs->freereg -= nexps - nvars;  /* remove extra values */
 }
 
 
@@ -501,7 +506,8 @@ static Proto *addprototype (LexState *ls) {
   if (fs->np >= f->sp->sizep) {
     int oldsize = f->sp->sizep;
     luaM_growvector(L, f->p, fs->np, f->sp->sizep, Proto *, MAXARG_Bx, "functions");
-    while (oldsize < f->sp->sizep) f->p[oldsize++] = NULL;
+    while (oldsize < f->sp->sizep)
+      f->p[oldsize++] = NULL;
   }
   f->p[fs->np++] = clp = luaF_newproto(L, NULL);
   luaC_objbarrier(L, f, clp);
@@ -763,7 +769,7 @@ static void parlist (LexState *ls) {
         }
         case TK_DOTS: {  /* param -> '...' */
           luaX_next(ls);
-          f->is_vararg = 2;  /* declared vararg */
+          f->is_vararg = 1;  /* declared vararg */
           break;
         }
         default: luaX_syntaxerror(ls, "<name> or '...' expected");
@@ -959,7 +965,6 @@ static void simpleexp (LexState *ls, expdesc *v) {
       FuncState *fs = ls->fs;
       check_condition(ls, fs->f->sp->is_vararg,
                       "cannot use '...' outside a vararg function");
-      fs->f->sp->is_vararg = 1;  /* function actually uses vararg */
       init_exp(v, VVARARG, luaK_codeABC(fs, OP_VARARG, 0, 1, 0));
       break;
     }
@@ -1159,11 +1164,8 @@ static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) {
     int nexps;
     checknext(ls, '=');
     nexps = explist(ls, &e);
-    if (nexps != nvars) {
+    if (nexps != nvars)
       adjust_assign(ls, nvars, nexps, &e);
-      if (nexps > nvars)
-        ls->fs->freereg -= nexps - nvars;  /* remove extra values */
-    }
     else {
       luaK_setoneret(ls->fs, &e);  /* close last expression */
       luaK_storevar(ls->fs, &lh->v, &e);
@@ -1229,7 +1231,7 @@ static void labelstat (LexState *ls, TString *label, int line) {
   checkrepeated(fs, ll, label);  /* check for repeated labels */
   checknext(ls, TK_DBCOLON);  /* skip double colon */
   /* create new entry for this label */
-  l = newlabelentry(ls, ll, label, line, fs->pc);
+  l = newlabelentry(ls, ll, label, line, luaK_getlabel(fs));
   skipnoopstat(ls);  /* skip other no-op statements */
   if (block_follow(ls, 0)) {  /* label is last no-op statement in the block? */
     /* assume that locals are already out of scope */
@@ -1393,7 +1395,7 @@ static void test_then_block (LexState *ls, int *escapelist) {
     luaK_goiffalse(ls->fs, &v);  /* will jump to label if condition is true */
     enterblock(fs, &bl, 0);  /* must enter block before 'goto' */
     gotostat(ls, v.t);  /* handle goto/break */
-    skipnoopstat(ls);  /* skip other no-op statements */
+    while (testnext(ls, ';')) {}  /* skip colons */
     if (block_follow(ls, 0)) {  /* 'goto' is the entire block? */
       leaveblock(fs);
       return;  /* and that is it */
@@ -1497,7 +1499,7 @@ static void exprstat (LexState *ls) {
   }
   else {  /* stat -> func */
     check_condition(ls, v.v.k == VCALL, "syntax error");
-    SETARG_C(getcode(fs, &v.v), 1);  /* call statement uses no results */
+    SETARG_C(getinstruction(fs, &v.v), 1);  /* call statement uses no results */
   }
 }
 
@@ -1514,8 +1516,8 @@ static void retstat (LexState *ls) {
     if (hasmultret(e.k)) {
       luaK_setmultret(fs, &e);
       if (e.k == VCALL && nret == 1) {  /* tail call? */
-        SET_OPCODE(getcode(fs,&e), OP_TAILCALL);
-        lua_assert(GETARG_A(getcode(fs,&e)) == fs->nactvar);
+        SET_OPCODE(getinstruction(fs,&e), OP_TAILCALL);
+        lua_assert(GETARG_A(getinstruction(fs,&e)) == fs->nactvar);
       }
       first = fs->nactvar;
       nret = LUA_MULTRET;  /* return all values */
@@ -1597,7 +1599,7 @@ static void statement (LexState *ls) {
       break;
     }
   }
-  lua_assert(ls->fs->f->maxstacksize >= ls->fs->freereg &&
+  lua_assert(ls->fs->f->sp->maxstacksize >= ls->fs->freereg &&
              ls->fs->freereg >= ls->fs->nactvar);
   ls->fs->freereg = ls->fs->nactvar;  /* free registers */
   leavelevel(ls);
@@ -1614,7 +1616,7 @@ static void mainfunc (LexState *ls, FuncState *fs) {
   BlockCnt bl;
   expdesc v;
   open_func(ls, fs, &bl);
-  fs->f->sp->is_vararg = 2;  /* main function is always declared vararg */
+  fs->f->sp->is_vararg = 1;  /* main function is always declared vararg */
   init_exp(&v, VLOCAL, 0);  /* create and... */
   newupvalue(fs, ls->envn, &v);  /* ...set environment upvalue */
   luaX_next(ls);  /* read first token */

3rd/lua/lparser.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lparser.h,v 1.74 2014/10/25 11:50:46 roberto Exp $
+** $Id: lparser.h,v 1.76.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
@@ -13,25 +13,38 @@
 
 
 /*
-** Expression descriptor
+** Expression and variable descriptor.
+** Code generation for variables and expressions can be delayed to allow
+** optimizations; An 'expdesc' structure describes a potentially-delayed
+** variable/expression. It has a description of its "main" value plus a
+** list of conditional jumps that can also produce its value (generated
+** by short-circuit operators 'and'/'or').
 */
 
+/* kinds of variables/expressions */
 typedef enum {
-  VVOID,	/* no value */
-  VNIL,
-  VTRUE,
-  VFALSE,
-  VK,		/* info = index of constant in 'k' */
-  VKFLT,	/* nval = numerical float value */
-  VKINT,	/* nval = numerical integer value */
-  VNONRELOC,	/* info = result register */
-  VLOCAL,	/* info = local register */
-  VUPVAL,       /* info = index of upvalue in 'upvalues' */
-  VINDEXED,	/* t = table register/upvalue; idx = index R/K */
-  VJMP,		/* info = instruction pc */
-  VRELOCABLE,	/* info = instruction pc */
-  VCALL,	/* info = instruction pc */
-  VVARARG	/* info = instruction pc */
+  VVOID,  /* when 'expdesc' describes the last expression a list,
+             this kind means an empty list (so, no expression) */
+  VNIL,  /* constant nil */
+  VTRUE,  /* constant true */
+  VFALSE,  /* constant false */
+  VK,  /* constant in 'k'; info = index of constant in 'k' */
+  VKFLT,  /* floating constant; nval = numerical float value */
+  VKINT,  /* integer constant; nval = numerical integer value */
+  VNONRELOC,  /* expression has its value in a fixed register;
+                 info = result register */
+  VLOCAL,  /* local variable; info = local register */
+  VUPVAL,  /* upvalue variable; info = index of upvalue in 'upvalues' */
+  VINDEXED,  /* indexed variable;
+                ind.vt = whether 't' is register or upvalue;
+                ind.t = table register or upvalue;
+                ind.idx = key's R/K index */
+  VJMP,  /* expression is a test/comparison;
+            info = pc of corresponding jump instruction */
+  VRELOCABLE,  /* expression can put result in any register;
+                  info = instruction pc */
+  VCALL,  /* expression is a function call; info = instruction pc */
+  VVARARG  /* vararg expression; info = instruction pc */
 } expkind;
 
 
@@ -41,14 +54,14 @@ typedef enum {
 typedef struct expdesc {
   expkind k;
   union {
+    lua_Integer ival;    /* for VKINT */
+    lua_Number nval;  /* for VKFLT */
+    int info;  /* for generic use */
     struct {  /* for indexed variables (VINDEXED) */
       short idx;  /* index (R/K) */
       lu_byte t;  /* table (register or upvalue) */
       lu_byte vt;  /* whether 't' is register (VLOCAL) or upvalue (VUPVAL) */
     } ind;
-    int info;  /* for generic use */
-    lua_Number nval;  /* for VKFLT */
-    lua_Integer ival;    /* for VKINT */
   } u;
   int t;  /* patch list of 'exit when true' */
   int f;  /* patch list of 'exit when false' */

3rd/lua/lprefix.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lprefix.h,v 1.2 2014/12/29 16:54:13 roberto Exp $
+** $Id: lprefix.h,v 1.2.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Definitions for Lua code that must come before any other header file
 ** See Copyright Notice in lua.h
 */

3rd/lua/lstate.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lstate.c,v 2.133 2015/11/13 12:16:51 roberto Exp $
+** $Id: lstate.c,v 2.133.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Global State
 ** See Copyright Notice in lua.h
 */

3rd/lua/lstate.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lstate.h,v 2.128 2015/11/13 12:16:51 roberto Exp $
+** $Id: lstate.h,v 2.133.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Global State
 ** See Copyright Notice in lua.h
 */
@@ -23,9 +23,27 @@
 **
 ** 'allgc': all objects not marked for finalization;
 ** 'finobj': all objects marked for finalization;
-** 'tobefnz': all objects ready to be finalized; 
+** 'tobefnz': all objects ready to be finalized;
 ** 'fixedgc': all objects that are not to be collected (currently
 ** only small strings, such as reserved words).
+**
+** Moreover, there is another set of lists that control gray objects.
+** These lists are linked by fields 'gclist'. (All objects that
+** can become gray have such a field. The field is not the same
+** in all objects, but it always has this name.)  Any gray object
+** must belong to one of these lists, and all objects in these lists
+** must be gray:
+**
+** 'gray': regular gray objects, still waiting to be visited.
+** 'grayagain': objects that must be revisited at the atomic phase.
+**   That includes
+**   - black objects got in a write barrier;
+**   - all kinds of weak tables during propagation phase;
+**   - all threads.
+** 'weak': tables with weak values to be cleared;
+** 'ephemeron': ephemeron tables with white->white entries;
+** 'allweak': tables with weak keys and/or weak values to be cleared.
+** The last three lists are used only during the atomic phase.
 
 */
 
@@ -33,6 +51,15 @@
 struct lua_longjmp;  /* defined in ldo.c */
 
 
+/*
+** Atomic type (relative to signals) to better ensure that 'lua_sethook'
+** is thread safe
+*/
+#if !defined(l_signalT)
+#include <signal.h>
+#define l_signalT	sig_atomic_t
+#endif
+
 
 /* extra stack space to handle TM calls and some other extras */
 #define EXTRA_STACK   5
@@ -57,7 +84,7 @@ typedef struct stringtable {
 ** Information about a call.
 ** When a thread yields, 'func' is adjusted to pretend that the
 ** top function has only the yielded values in its stack; in that
-** case, the actual 'func' value is saved in field 'extra'. 
+** case, the actual 'func' value is saved in field 'extra'.
 ** When a function calls another with a continuation, 'extra' keeps
 ** the function index so that, in case of errors, the continuation
 ** function can be called with the correct top.
@@ -79,7 +106,7 @@ typedef struct CallInfo {
   } u;
   ptrdiff_t extra;
   short nresults;  /* expected number of results from this function */
-  lu_byte callstatus;
+  unsigned short callstatus;
 } CallInfo;
 
 
@@ -95,6 +122,7 @@ typedef struct CallInfo {
 #define CIST_TAIL	(1<<5)	/* call was tail called */
 #define CIST_HOOKYIELD	(1<<6)	/* last hook called yielded */
 #define CIST_LEQ	(1<<7)  /* using __lt for __le */
+#define CIST_FIN	(1<<8)  /* call is running a finalizer */
 
 #define isLua(ci)	((ci)->callstatus & CIST_LUA)
 
@@ -162,14 +190,14 @@ struct lua_State {
   struct lua_State *twups;  /* list of threads with open upvalues */
   struct lua_longjmp *errorJmp;  /* current error recover point */
   CallInfo base_ci;  /* CallInfo for first level (C calling Lua) */
-  lua_Hook hook;
+  volatile lua_Hook hook;
   ptrdiff_t errfunc;  /* current error handling function (stack index) */
   int stacksize;
   int basehookcount;
   int hookcount;
   unsigned short nny;  /* number of non-yieldable calls in stack */
   unsigned short nCcalls;  /* number of nested C calls */
-  lu_byte hookmask;
+  l_signalT hookmask;
   lu_byte allowhook;
 };
 

3rd/lua/lstring.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lstring.c,v 2.56 2015/11/23 11:32:51 roberto Exp $
+** $Id: lstring.c,v 2.56.1.1 2017/04/19 17:20:42 roberto Exp $
 ** String table (keeps all strings handled by Lua)
 ** See Copyright Notice in lua.h
 */

3rd/lua/lstring.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lstring.h,v 1.61 2015/11/03 15:36:01 roberto Exp $
+** $Id: lstring.h,v 1.61.1.1 2017/04/19 17:20:42 roberto Exp $
 ** String table (keep all strings handled by Lua)
 ** See Copyright Notice in lua.h
 */

3rd/lua/lstrlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lstrlib.c,v 1.239 2015/11/25 16:28:17 roberto Exp $
+** $Id: lstrlib.c,v 1.254.1.1 2017/04/19 17:29:57 roberto Exp $
 ** Standard library for string operations and pattern-matching
 ** See Copyright Notice in lua.h
 */
@@ -13,6 +13,7 @@
 #include <ctype.h>
 #include <float.h>
 #include <limits.h>
+#include <locale.h>
 #include <stddef.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -26,7 +27,8 @@
 
 /*
 ** maximum number of captures that a pattern can do during
-** pattern-matching. This limit is arbitrary.
+** pattern-matching. This limit is arbitrary, but must fit in
+** an unsigned char.
 */
 #if !defined(LUA_MAXCAPTURES)
 #define LUA_MAXCAPTURES		32
@@ -214,9 +216,8 @@ typedef struct MatchState {
   const char *src_end;  /* end ('\0') of source string */
   const char *p_end;  /* end ('\0') of pattern */
   lua_State *L;
-  size_t nrep;  /* limit to avoid non-linear complexity */
   int matchdepth;  /* control for recursive depth (to avoid C stack overflow) */
-  int level;  /* total number of captures (finished or unfinished) */
+  unsigned char level;  /* total number of captures (finished or unfinished) */
   struct {
     const char *init;
     ptrdiff_t len;
@@ -234,17 +235,6 @@ static const char *match (MatchState *ms, const char *s, const char *p);
 #endif
 
 
-/*
-** parameters to control the maximum number of operators handled in
-** a match (to avoid non-linear complexity). The maximum will be:
-** (subject length) * A_REPS + B_REPS
-*/
-#if !defined(A_REPS)
-#define A_REPS		4
-#define B_REPS		100000
-#endif
-
-
 #define L_ESC		'%'
 #define SPECIALS	"^$*+?.([%-"
 
@@ -502,8 +492,6 @@ static const char *match (MatchState *ms, const char *s, const char *p) {
             s = NULL;  /* fail */
         }
         else {  /* matched once */
-          if (ms->nrep-- == 0)
-            luaL_error(ms->L, "pattern too complex");
           switch (*ep) {  /* handle optional suffix */
             case '?': {  /* optional */
               const char *res;
@@ -607,10 +595,6 @@ static void prepstate (MatchState *ms, lua_State *L,
   ms->src_init = s;
   ms->src_end = s + ls;
   ms->p_end = p + lp;
-  if (ls < (MAX_SIZET - B_REPS) / A_REPS)
-    ms->nrep = A_REPS * ls + B_REPS;
-  else  /* overflow (very long subject) */
-    ms->nrep = MAX_SIZET;  /* no limit */
 }
 
 
@@ -681,6 +665,7 @@ static int str_match (lua_State *L) {
 typedef struct GMatchState {
   const char *src;  /* current position */
   const char *p;  /* pattern */
+  const char *lastmatch;  /* end of last match */
   MatchState ms;  /* match state */
 } GMatchState;
 
@@ -688,14 +673,12 @@ typedef struct GMatchState {
 static int gmatch_aux (lua_State *L) {
   GMatchState *gm = (GMatchState *)lua_touserdata(L, lua_upvalueindex(3));
   const char *src;
+  gm->ms.L = L;
   for (src = gm->src; src <= gm->ms.src_end; src++) {
     const char *e;
     reprepstate(&gm->ms);
-    if ((e = match(&gm->ms, src, gm->p)) != NULL) {
-      if (e == src)  /* empty match? */
-        gm->src =src + 1;  /* go at least one position */
-      else
-        gm->src = e;
+    if ((e = match(&gm->ms, src, gm->p)) != NULL && e != gm->lastmatch) {
+      gm->src = gm->lastmatch = e;
       return push_captures(&gm->ms, src, e);
     }
   }
@@ -711,7 +694,7 @@ static int gmatch (lua_State *L) {
   lua_settop(L, 2);  /* keep them on closure to avoid being collected */
   gm = (GMatchState *)lua_newuserdata(L, sizeof(GMatchState));
   prepstate(&gm->ms, L, s, ls, p, lp);
-  gm->src = s; gm->p = p;
+  gm->src = s; gm->p = p; gm->lastmatch = NULL;
   lua_pushcclosure(L, gmatch_aux, 3);
   return 1;
 }
@@ -778,12 +761,13 @@ static void add_value (MatchState *ms, luaL_Buffer *b, const char *s,
 
 static int str_gsub (lua_State *L) {
   size_t srcl, lp;
-  const char *src = luaL_checklstring(L, 1, &srcl);
-  const char *p = luaL_checklstring(L, 2, &lp);
-  int tr = lua_type(L, 3);
-  lua_Integer max_s = luaL_optinteger(L, 4, srcl + 1);
+  const char *src = luaL_checklstring(L, 1, &srcl);  /* subject */
+  const char *p = luaL_checklstring(L, 2, &lp);  /* pattern */
+  const char *lastmatch = NULL;  /* end of last match */
+  int tr = lua_type(L, 3);  /* replacement type */
+  lua_Integer max_s = luaL_optinteger(L, 4, srcl + 1);  /* max replacements */
   int anchor = (*p == '^');
-  lua_Integer n = 0;
+  lua_Integer n = 0;  /* replacement count */
   MatchState ms;
   luaL_Buffer b;
   luaL_argcheck(L, tr == LUA_TNUMBER || tr == LUA_TSTRING ||
@@ -796,16 +780,15 @@ static int str_gsub (lua_State *L) {
   prepstate(&ms, L, src, srcl, p, lp);
   while (n < max_s) {
     const char *e;
-    reprepstate(&ms);
-    if ((e = match(&ms, src, p)) != NULL) {
+    reprepstate(&ms);  /* (re)prepare state for new match */
+    if ((e = match(&ms, src, p)) != NULL && e != lastmatch) {  /* match? */
       n++;
-      add_value(&ms, &b, src, e, tr);
+      add_value(&ms, &b, src, e, tr);  /* add replacement to buffer */
+      src = lastmatch = e;
     }
-    if (e && e>src) /* non empty match? */
-      src = e;  /* skip it */
-    else if (src < ms.src_end)
+    else if (src < ms.src_end)  /* otherwise, skip one character */
       luaL_addchar(&b, *src++);
-    else break;
+    else break;  /* end of subject */
     if (anchor) break;
   }
   luaL_addlstring(&b, src, ms.src_end-src);
@@ -830,7 +813,6 @@ static int str_gsub (lua_State *L) {
 ** Hexadecimal floating-point formatter
 */
 
-#include <locale.h>
 #include <math.h>
 
 #define SIZELENMOD	(sizeof(LUA_NUMBER_FRMLEN)/sizeof(char))
@@ -857,11 +839,12 @@ static lua_Number adddigit (char *buff, int n, lua_Number x) {
 
 
 static int num2straux (char *buff, int sz, lua_Number x) {
-  if (x != x || x == HUGE_VAL || x == -HUGE_VAL)  /* inf or NaN? */
-    return l_sprintf(buff, sz, LUA_NUMBER_FMT, x);  /* equal to '%g' */
+  /* if 'inf' or 'NaN', format it like '%g' */
+  if (x != x || x == (lua_Number)HUGE_VAL || x == -(lua_Number)HUGE_VAL)
+    return l_sprintf(buff, sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)x);
   else if (x == 0) {  /* can be -0... */
     /* create "0" or "-0" followed by exponent */
-    return l_sprintf(buff, sz, LUA_NUMBER_FMT "x0p+0", x);
+    return l_sprintf(buff, sz, LUA_NUMBER_FMT "x0p+0", (LUAI_UACNUMBER)x);
   }
   else {
     int e;
@@ -896,7 +879,7 @@ static int lua_number2strx (lua_State *L, char *buff, int sz,
       buff[i] = toupper(uchar(buff[i]));
   }
   else if (fmt[SIZELENMOD] != 'a')
-    luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented");
+    return luaL_error(L, "modifiers for format '%%a'/'%%A' not implemented");
   return n;
 }
 
@@ -922,16 +905,14 @@ static int lua_number2strx (lua_State *L, char *buff, int sz,
 #define MAX_FORMAT	32
 
 
-static void addquoted (lua_State *L, luaL_Buffer *b, int arg) {
-  size_t l;
-  const char *s = luaL_checklstring(L, arg, &l);
+static void addquoted (luaL_Buffer *b, const char *s, size_t len) {
   luaL_addchar(b, '"');
-  while (l--) {
+  while (len--) {
     if (*s == '"' || *s == '\\' || *s == '\n') {
       luaL_addchar(b, '\\');
       luaL_addchar(b, *s);
     }
-    else if (*s == '\0' || iscntrl(uchar(*s))) {
+    else if (iscntrl(uchar(*s))) {
       char buff[10];
       if (!isdigit(uchar(*(s+1))))
         l_sprintf(buff, sizeof(buff), "\\%d", (int)uchar(*s));
@@ -946,6 +927,57 @@ static void addquoted (lua_State *L, luaL_Buffer *b, int arg) {
   luaL_addchar(b, '"');
 }
 
+
+/*
+** Ensures the 'buff' string uses a dot as the radix character.
+*/
+static void checkdp (char *buff, int nb) {
+  if (memchr(buff, '.', nb) == NULL) {  /* no dot? */
+    char point = lua_getlocaledecpoint();  /* try locale point */
+    char *ppoint = (char *)memchr(buff, point, nb);
+    if (ppoint) *ppoint = '.';  /* change it to a dot */
+  }
+}
+
+
+static void addliteral (lua_State *L, luaL_Buffer *b, int arg) {
+  switch (lua_type(L, arg)) {
+    case LUA_TSTRING: {
+      size_t len;
+      const char *s = lua_tolstring(L, arg, &len);
+      addquoted(b, s, len);
+      break;
+    }
+    case LUA_TNUMBER: {
+      char *buff = luaL_prepbuffsize(b, MAX_ITEM);
+      int nb;
+      if (!lua_isinteger(L, arg)) {  /* float? */
+        lua_Number n = lua_tonumber(L, arg);  /* write as hexa ('%a') */
+        nb = lua_number2strx(L, buff, MAX_ITEM, "%" LUA_NUMBER_FRMLEN "a", n);
+        checkdp(buff, nb);  /* ensure it uses a dot */
+      }
+      else {  /* integers */
+        lua_Integer n = lua_tointeger(L, arg);
+        const char *format = (n == LUA_MININTEGER)  /* corner case? */
+                           ? "0x%" LUA_INTEGER_FRMLEN "x"  /* use hexa */
+                           : LUA_INTEGER_FMT;  /* else use default format */
+        nb = l_sprintf(buff, MAX_ITEM, format, (LUAI_UACINT)n);
+      }
+      luaL_addsize(b, nb);
+      break;
+    }
+    case LUA_TNIL: case LUA_TBOOLEAN: {
+      luaL_tolstring(L, arg, NULL);
+      luaL_addvalue(b);
+      break;
+    }
+    default: {
+      luaL_argerror(L, arg, "value has no literal form");
+    }
+  }
+}
+
+
 static const char *scanformat (lua_State *L, const char *strfrmt, char *form) {
   const char *p = strfrmt;
   while (*p != '\0' && strchr(FLAGS, *p) != NULL) p++;  /* skip flags */
@@ -1010,7 +1042,7 @@ static int str_format (lua_State *L) {
         case 'o': case 'u': case 'x': case 'X': {
           lua_Integer n = luaL_checkinteger(L, arg);
           addlenmod(form, LUA_INTEGER_FRMLEN);
-          nb = l_sprintf(buff, MAX_ITEM, form, n);
+          nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACINT)n);
           break;
         }
         case 'a': case 'A':
@@ -1020,12 +1052,13 @@ static int str_format (lua_State *L) {
           break;
         case 'e': case 'E': case 'f':
         case 'g': case 'G': {
+          lua_Number n = luaL_checknumber(L, arg);
           addlenmod(form, LUA_NUMBER_FRMLEN);
-          nb = l_sprintf(buff, MAX_ITEM, form, luaL_checknumber(L, arg));
+          nb = l_sprintf(buff, MAX_ITEM, form, (LUAI_UACNUMBER)n);
           break;
         }
         case 'q': {
-          addquoted(L, &b, arg);
+          addliteral(L, &b, arg);
           break;
         }
         case 's': {
@@ -1070,8 +1103,8 @@ static int str_format (lua_State *L) {
 
 
 /* value used for padding */
-#if !defined(LUA_PACKPADBYTE)
-#define LUA_PACKPADBYTE		0x00
+#if !defined(LUAL_PACKPADBYTE)
+#define LUAL_PACKPADBYTE		0x00
 #endif
 
 /* maximum size for the binary representation of an integer */
@@ -1166,8 +1199,8 @@ static int getnum (const char **fmt, int df) {
 static int getnumlimit (Header *h, const char **fmt, int df) {
   int sz = getnum(fmt, df);
   if (sz > MAXINTSIZE || sz <= 0)
-    luaL_error(h->L, "integral size (%d) out of limits [1,%d]",
-                     sz, MAXINTSIZE);
+    return luaL_error(h->L, "integral size (%d) out of limits [1,%d]",
+                            sz, MAXINTSIZE);
   return sz;
 }
 
@@ -1228,7 +1261,7 @@ static KOption getoption (Header *h, const char **fmt, int *size) {
 ** 'psize' is filled with option's size, 'notoalign' with its
 ** alignment requirements.
 ** Local variable 'size' gets the size to be aligned. (Kpadal option
-** always gets its full alignment, other options are limited by 
+** always gets its full alignment, other options are limited by
 ** the maximum alignment ('maxalign'). Kchar option needs no alignment
 ** despite its size.
 */
@@ -1308,7 +1341,7 @@ static int str_pack (lua_State *L) {
     KOption opt = getdetails(&h, totalsize, &fmt, &size, &ntoalign);
     totalsize += ntoalign + size;
     while (ntoalign-- > 0)
-     luaL_addchar(&b, LUA_PACKPADBYTE);  /* fill alignment */
+     luaL_addchar(&b, LUAL_PACKPADBYTE);  /* fill alignment */
     arg++;
     switch (opt) {
       case Kint: {  /* signed integers */
@@ -1343,13 +1376,11 @@ static int str_pack (lua_State *L) {
       case Kchar: {  /* fixed-size string */
         size_t len;
         const char *s = luaL_checklstring(L, arg, &len);
-        if ((size_t)size <= len)  /* string larger than (or equal to) needed? */
-          luaL_addlstring(&b, s, size);  /* truncate string to asked size */
-        else {  /* string smaller than needed */
-          luaL_addlstring(&b, s, len);  /* add it all */
-          while (len++ < (size_t)size)  /* pad extra space */
-            luaL_addchar(&b, LUA_PACKPADBYTE);
-        }
+        luaL_argcheck(L, len <= (size_t)size, arg,
+                         "string longer than given size");
+        luaL_addlstring(&b, s, len);  /* add string */
+        while (len++ < (size_t)size)  /* pad extra space */
+          luaL_addchar(&b, LUAL_PACKPADBYTE);
         break;
       }
       case Kstring: {  /* strings with length count */
@@ -1372,7 +1403,7 @@ static int str_pack (lua_State *L) {
         totalsize += len + 1;
         break;
       }
-      case Kpadding: luaL_addchar(&b, LUA_PACKPADBYTE);  /* FALLTHROUGH */
+      case Kpadding: luaL_addchar(&b, LUAL_PACKPADBYTE);  /* FALLTHROUGH */
       case Kpaddalign: case Knop:
         arg--;  /* undo increment */
         break;

3rd/lua/ltable.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.c,v 2.117 2015/11/19 19:16:22 roberto Exp $
+** $Id: ltable.c,v 2.118.1.4 2018/06/08 16:22:51 roberto Exp $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -74,8 +74,6 @@
 
 #define dummynode		(&dummynode_)
 
-#define isdummy(n)		((n) == dummynode)
-
 static const Node dummynode_ = {
   {NILCONSTANT},  /* value */
   {{NILCONSTANT, 0}}  /* key */
@@ -225,7 +223,9 @@ static unsigned int computesizes (unsigned int nums[], unsigned int *pna) {
   unsigned int na = 0;  /* number of elements to go to array part */
   unsigned int optimal = 0;  /* optimal size for array part */
   /* loop while keys can fill more than half of total size */
-  for (i = 0, twotoi = 1; *pna > twotoi / 2; i++, twotoi *= 2) {
+  for (i = 0, twotoi = 1;
+       twotoi > 0 && *pna > twotoi / 2;
+       i++, twotoi *= 2) {
     if (nums[i] > 0) {
       a += nums[i];
       if (a > twotoi/2) {  /* more than half elements present? */
@@ -308,14 +308,14 @@ static void setarrayvector (lua_State *L, Table *t, unsigned int size) {
 
 
 static void setnodevector (lua_State *L, Table *t, unsigned int size) {
-  int lsize;
   if (size == 0) {  /* no elements to hash part? */
     t->node = cast(Node *, dummynode);  /* use common 'dummynode' */
-    lsize = 0;
+    t->lsizenode = 0;
+    t->lastfree = NULL;  /* signal that it is using dummy node */
   }
   else {
     int i;
-    lsize = luaO_ceillog2(size);
+    int lsize = luaO_ceillog2(size);
     if (lsize > MAXHBITS)
       luaG_runerror(L, "table overflow");
     size = twoto(lsize);
@@ -326,9 +326,21 @@ static void setnodevector (lua_State *L, Table *t, unsigned int size) {
       setnilvalue(wgkey(n));
       setnilvalue(gval(n));
     }
+    t->lsizenode = cast_byte(lsize);
+    t->lastfree = gnode(t, size);  /* all positions are free */
   }
-  t->lsizenode = cast_byte(lsize);
-  t->lastfree = gnode(t, size);  /* all positions are free */
+}
+
+
+typedef struct {
+  Table *t;
+  unsigned int nhsize;
+} AuxsetnodeT;
+
+
+static void auxsetnode (lua_State *L, void *ud) {
+  AuxsetnodeT *asn = cast(AuxsetnodeT *, ud);
+  setnodevector(L, asn->t, asn->nhsize);
 }
 
 
@@ -336,13 +348,18 @@ void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
                                           unsigned int nhsize) {
   unsigned int i;
   int j;
+  AuxsetnodeT asn;
   unsigned int oldasize = t->sizearray;
-  int oldhsize = t->lsizenode;
+  int oldhsize = allocsizenode(t);
   Node *nold = t->node;  /* save old hash ... */
   if (nasize > oldasize)  /* array part must grow? */
     setarrayvector(L, t, nasize);
   /* create new hash part with appropriate size */
-  setnodevector(L, t, nhsize);
+  asn.t = t; asn.nhsize = nhsize;
+  if (luaD_rawrunprotected(L, auxsetnode, &asn) != LUA_OK) {  /* mem. error? */
+    setarrayvector(L, t, oldasize);  /* array back to its original size */
+    luaD_throw(L, LUA_ERRMEM);  /* rethrow memory error */
+  }
   if (nasize < oldasize) {  /* array part must shrink? */
     t->sizearray = nasize;
     /* re-insert elements from vanishing slice */
@@ -354,7 +371,7 @@ void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
     luaM_reallocvector(L, t->array, oldasize, nasize, TValue);
   }
   /* re-insert elements from hash part */
-  for (j = twoto(oldhsize) - 1; j >= 0; j--) {
+  for (j = oldhsize - 1; j >= 0; j--) {
     Node *old = nold + j;
     if (!ttisnil(gval(old))) {
       /* doesn't need barrier/invalidate cache, as entry was
@@ -362,13 +379,13 @@ void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
       setobjt2t(L, luaH_set(L, t, gkey(old)), gval(old));
     }
   }
-  if (!isdummy(nold))
-    luaM_freearray(L, nold, cast(size_t, twoto(oldhsize))); /* free old hash */
+  if (oldhsize > 0)  /* not the dummy node? */
+    luaM_freearray(L, nold, cast(size_t, oldhsize)); /* free old hash */
 }
 
 
 void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize) {
-  int nsize = isdummy(t->node) ? 0 : sizenode(t);
+  int nsize = allocsizenode(t);
   luaH_resize(L, t, nasize, nsize);
 }
 
@@ -414,7 +431,7 @@ Table *luaH_new (lua_State *L) {
 
 
 void luaH_free (lua_State *L, Table *t) {
-  if (!isdummy(t->node))
+  if (!isdummy(t))
     luaM_freearray(L, t->node, cast(size_t, sizenode(t)));
   luaM_freearray(L, t->array, t->sizearray);
   luaM_free(L, t);
@@ -422,10 +439,12 @@ void luaH_free (lua_State *L, Table *t) {
 
 
 static Node *getfreepos (Table *t) {
-  while (t->lastfree > t->node) {
-    t->lastfree--;
-    if (ttisnil(gkey(t->lastfree)))
-      return t->lastfree;
+  if (!isdummy(t)) {
+    while (t->lastfree > t->node) {
+      t->lastfree--;
+      if (ttisnil(gkey(t->lastfree)))
+        return t->lastfree;
+    }
   }
   return NULL;  /* could not find a free place */
 }
@@ -445,7 +464,7 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
   if (ttisnil(key)) luaG_runerror(L, "table index is nil");
   else if (ttisfloat(key)) {
     lua_Integer k;
-    if (luaV_tointeger(key, &k, 0)) {  /* index is int? */
+    if (luaV_tointeger(key, &k, 0)) {  /* does index fit in an integer? */
       setivalue(&aux, k);
       key = &aux;  /* insert it as an integer */
     }
@@ -453,7 +472,7 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
       luaG_runerror(L, "table index is NaN");
   }
   mp = mainposition(t, key);
-  if (!ttisnil(gval(mp)) || isdummy(mp)) {  /* main position is taken? */
+  if (!ttisnil(gval(mp)) || isdummy(t)) {  /* main position is taken? */
     Node *othern;
     Node *f = getfreepos(t);  /* get a free place */
     if (f == NULL) {  /* cannot find a free place? */
@@ -461,7 +480,7 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
       /* whatever called 'newkey' takes care of TM cache */
       return luaH_set(L, t, key);  /* insert key into grown table */
     }
-    lua_assert(!isdummy(f));
+    lua_assert(!isdummy(t));
     othern = mainposition(t, gkey(mp));
     if (othern != mp) {  /* is colliding node out of its main position? */
       /* yes; move colliding node into free position */
@@ -610,13 +629,13 @@ void luaH_setint (lua_State *L, Table *t, lua_Integer key, TValue *value) {
 }
 
 
-static int unbound_search (Table *t, unsigned int j) {
-  unsigned int i = j;  /* i is zero or a present index */
+static lua_Unsigned unbound_search (Table *t, lua_Unsigned j) {
+  lua_Unsigned i = j;  /* i is zero or a present index */
   j++;
   /* find 'i' and 'j' such that i is present and j is not */
   while (!ttisnil(luaH_getint(t, j))) {
     i = j;
-    if (j > cast(unsigned int, MAX_INT)/2) {  /* overflow? */
+    if (j > l_castS2U(LUA_MAXINTEGER) / 2) {  /* overflow? */
       /* table was built with bad purposes: resort to linear search */
       i = 1;
       while (!ttisnil(luaH_getint(t, i))) i++;
@@ -626,7 +645,7 @@ static int unbound_search (Table *t, unsigned int j) {
   }
   /* now do a binary search between them */
   while (j - i > 1) {
-    unsigned int m = (i+j)/2;
+    lua_Unsigned m = (i+j)/2;
     if (ttisnil(luaH_getint(t, m))) j = m;
     else i = m;
   }
@@ -638,7 +657,7 @@ static int unbound_search (Table *t, unsigned int j) {
 ** Try to find a boundary in table 't'. A 'boundary' is an integer index
 ** such that t[i] is non-nil and t[i+1] is nil (and 0 if t[1] is nil).
 */
-int luaH_getn (Table *t) {
+lua_Unsigned luaH_getn (Table *t) {
   unsigned int j = t->sizearray;
   if (j > 0 && ttisnil(&t->array[j - 1])) {
     /* there is a boundary in the array part: (binary) search for it */
@@ -651,7 +670,7 @@ int luaH_getn (Table *t) {
     return i;
   }
   /* else must find a boundary in hash part */
-  else if (isdummy(t->node))  /* hash part is empty? */
+  else if (isdummy(t))  /* hash part is empty? */
     return j;  /* that is easy... */
   else return unbound_search(t, j);
 }
@@ -664,6 +683,6 @@ Node *luaH_mainposition (const Table *t, const TValue *key) {
   return mainposition(t, key);
 }
 
-int luaH_isdummy (Node *n) { return isdummy(n); }
+int luaH_isdummy (const Table *t) { return isdummy(t); }
 
 #endif

3rd/lua/ltable.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.h,v 2.21 2015/11/03 15:47:30 roberto Exp $
+** $Id: ltable.h,v 2.23.1.2 2018/05/24 19:39:05 roberto Exp $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -15,7 +15,7 @@
 #define gnext(n)	((n)->i_key.nk.next)
 
 
-/* 'const' to avoid wrong writings that can mess up field 'next' */ 
+/* 'const' to avoid wrong writings that can mess up field 'next' */
 #define gkey(n)		cast(const TValue*, (&(n)->i_key.tvk))
 
 /*
@@ -27,6 +27,14 @@
 #define invalidateTMcache(t)	((t)->flags = 0)
 
 
+/* true when 't' is using 'dummynode' as its hash part */
+#define isdummy(t)		((t)->lastfree == NULL)
+
+
+/* allocated size for hash nodes */
+#define allocsizenode(t)	(isdummy(t) ? 0 : sizenode(t))
+
+
 /* returns the key, given the value of a table entry */
 #define keyfromval(v) \
   (gkey(cast(Node *, cast(char *, (v)) - offsetof(Node, i_val))))
@@ -46,12 +54,12 @@ LUAI_FUNC void luaH_resize (lua_State *L, Table *t, unsigned int nasize,
 LUAI_FUNC void luaH_resizearray (lua_State *L, Table *t, unsigned int nasize);
 LUAI_FUNC void luaH_free (lua_State *L, Table *t);
 LUAI_FUNC int luaH_next (lua_State *L, Table *t, StkId key);
-LUAI_FUNC int luaH_getn (Table *t);
+LUAI_FUNC lua_Unsigned luaH_getn (Table *t);
 
 
 #if defined(LUA_DEBUG)
 LUAI_FUNC Node *luaH_mainposition (const Table *t, const TValue *key);
-LUAI_FUNC int luaH_isdummy (Node *n);
+LUAI_FUNC int luaH_isdummy (const Table *t);
 #endif
 
 

3rd/lua/ltablib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltablib.c,v 1.90 2015/11/25 12:48:57 roberto Exp $
+** $Id: ltablib.c,v 1.93.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Library for Table Manipulation
 ** See Copyright Notice in lua.h
 */
@@ -53,7 +53,7 @@ static void checktab (lua_State *L, int arg, int what) {
       lua_pop(L, n);  /* pop metatable and tested metamethods */
     }
     else
-      luaL_argerror(L, arg, "table expected");  /* force an error */
+      luaL_checktype(L, arg, LUA_TTABLE);  /* force an error */
   }
 }
 
@@ -139,7 +139,7 @@ static int tmove (lua_State *L) {
     n = e - f + 1;  /* number of elements to move */
     luaL_argcheck(L, t <= LUA_MAXINTEGER - n + 1, 4,
                   "destination wrap around");
-    if (t > e || t <= f || tt != 1) {
+    if (t > e || t <= f || (tt != 1 && !lua_compare(L, 1, tt, LUA_OPEQ))) {
       for (i = 0; i < n; i++) {
         lua_geti(L, 1, f + i);
         lua_seti(L, tt, t + i);
@@ -152,7 +152,7 @@ static int tmove (lua_State *L) {
       }
     }
   }
-  lua_pushvalue(L, tt);  /* return "to table" */
+  lua_pushvalue(L, tt);  /* return destination table */
   return 1;
 }
 
@@ -172,7 +172,7 @@ static int tconcat (lua_State *L) {
   size_t lsep;
   const char *sep = luaL_optlstring(L, 2, "", &lsep);
   lua_Integer i = luaL_optinteger(L, 3, 1);
-  last = luaL_opt(L, luaL_checkinteger, 4, last);
+  last = luaL_optinteger(L, 4, last);
   luaL_buffinit(L, &b);
   for (; i < last; i++) {
     addfield(L, &b, i);
@@ -232,6 +232,10 @@ static int unpack (lua_State *L) {
 */
 
 
+/* type for array indices */
+typedef unsigned int IdxT;
+
+
 /*
 ** Produce a "random" 'unsigned int' to randomize pivot choice. This
 ** macro is used only when 'sort' detects a big imbalance in the result
@@ -270,7 +274,7 @@ static unsigned int l_randomizePivot (void) {
 #define RANLIMIT	100u
 
 
-static void set2 (lua_State *L, unsigned int i, unsigned int j) {
+static void set2 (lua_State *L, IdxT i, IdxT j) {
   lua_seti(L, 1, i);
   lua_seti(L, 1, j);
 }
@@ -303,10 +307,9 @@ static int sort_comp (lua_State *L, int a, int b) {
 ** Pos-condition: a[lo .. i - 1] <= a[i] == P <= a[i + 1 .. up]
 ** returns 'i'.
 */
-static unsigned int partition (lua_State *L, unsigned int lo,
-                                             unsigned int up) {
-  unsigned int i = lo;  /* will be incremented before first use */
-  unsigned int j = up - 1;  /* will be decremented before first use */
+static IdxT partition (lua_State *L, IdxT lo, IdxT up) {
+  IdxT i = lo;  /* will be incremented before first use */
+  IdxT j = up - 1;  /* will be decremented before first use */
   /* loop invariant: a[lo .. i] <= P <= a[j .. up] */
   for (;;) {
     /* next loop: repeat ++i while a[i] < P */
@@ -340,10 +343,9 @@ static unsigned int partition (lua_State *L, unsigned int lo,
 ** Choose an element in the middle (2nd-3th quarters) of [lo,up]
 ** "randomized" by 'rnd'
 */
-static unsigned int choosePivot (unsigned int lo, unsigned int up,
-                                 unsigned int rnd) {
-  unsigned int r4 = (unsigned int)(up - lo) / 4u;  /* range/4 */
-  unsigned int p = rnd % (r4 * 2) + (lo + r4);
+static IdxT choosePivot (IdxT lo, IdxT up, unsigned int rnd) {
+  IdxT r4 = (up - lo) / 4;  /* range/4 */
+  IdxT p = rnd % (r4 * 2) + (lo + r4);
   lua_assert(lo + r4 <= p && p <= up - r4);
   return p;
 }
@@ -352,11 +354,11 @@ static unsigned int choosePivot (unsigned int lo, unsigned int up,
 /*
 ** QuickSort algorithm (recursive function)
 */
-static void auxsort (lua_State *L, unsigned int lo, unsigned int up,
+static void auxsort (lua_State *L, IdxT lo, IdxT up,
                                    unsigned int rnd) {
   while (lo < up) {  /* loop for tail recursion */
-    unsigned int p;  /* Pivot index */
-    unsigned int n;  /* to be used later */
+    IdxT p;  /* Pivot index */
+    IdxT n;  /* to be used later */
     /* sort elements 'lo', 'p', and 'up' */
     lua_geti(L, 1, lo);
     lua_geti(L, 1, up);
@@ -400,7 +402,7 @@ static void auxsort (lua_State *L, unsigned int lo, unsigned int up,
       n = up - p;  /* size of smaller interval */
       up = p - 1;  /* tail call for [lo .. p - 1]  (lower interval) */
     }
-    if ((up - lo) / 128u > n) /* partition too imbalanced? */
+    if ((up - lo) / 128 > n) /* partition too imbalanced? */
       rnd = l_randomizePivot();  /* try a new randomization */
   }  /* tail call auxsort(L, lo, up, rnd) */
 }
@@ -410,11 +412,10 @@ static int sort (lua_State *L) {
   lua_Integer n = aux_getn(L, 1, TAB_RW);
   if (n > 1) {  /* non-trivial interval? */
     luaL_argcheck(L, n < INT_MAX, 1, "array too big");
-    luaL_checkstack(L, 40, "");  /* assume array is smaller than 2^40 */
     if (!lua_isnoneornil(L, 2))  /* is there a 2nd argument? */
       luaL_checktype(L, 2, LUA_TFUNCTION);  /* must be a function */
     lua_settop(L, 2);  /* make sure there are two arguments */
-    auxsort(L, 1, (unsigned int)n, 0u);
+    auxsort(L, 1, (IdxT)n, 0);
   }
   return 0;
 }

3rd/lua/ltm.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltm.c,v 2.36 2015/11/03 15:47:30 roberto Exp $
+** $Id: ltm.c,v 2.38.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
@@ -15,7 +15,7 @@
 #include "lua.h"
 
 #include "ldebug.h"
-#include "ldo.h" 
+#include "ldo.h"
 #include "lobject.h"
 #include "lstate.h"
 #include "lstring.h"
@@ -83,6 +83,22 @@ const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o, TMS event) {
 }
 
 
+/*
+** Return the name of the type of an object. For tables and userdata
+** with metatable, use their '__name' metafield, if present.
+*/
+const char *luaT_objtypename (lua_State *L, const TValue *o) {
+  Table *mt;
+  if ((ttistable(o) && (mt = hvalue(o)->metatable) != NULL) ||
+      (ttisfulluserdata(o) && (mt = uvalue(o)->metatable) != NULL)) {
+    const TValue *name = luaH_getshortstr(mt, luaS_new(L, "__name"));
+    if (ttisstring(name))  /* is '__name' a string? */
+      return getstr(tsvalue(name));  /* use it as type name */
+  }
+  return ttypename(ttnov(o));  /* else use standard type name */
+}
+
+
 void luaT_callTM (lua_State *L, const TValue *f, const TValue *p1,
                   const TValue *p2, TValue *p3, int hasres) {
   ptrdiff_t result = savestack(L, p3);

3rd/lua/ltm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltm.h,v 2.21 2014/10/25 11:50:46 roberto Exp $
+** $Id: ltm.h,v 2.22.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Tag methods
 ** See Copyright Notice in lua.h
 */
@@ -51,11 +51,12 @@ typedef enum {
 #define fasttm(l,et,e)	gfasttm(G(l), et, e)
 
 #define ttypename(x)	luaT_typenames_[(x) + 1]
-#define objtypename(x)	ttypename(ttnov(x))
 
 LUAI_DDEC const char *const luaT_typenames_[LUA_TOTALTAGS];
 
 
+LUAI_FUNC const char *luaT_objtypename (lua_State *L, const TValue *o);
+
 LUAI_FUNC const TValue *luaT_gettm (Table *events, TMS event, TString *ename);
 LUAI_FUNC const TValue *luaT_gettmbyobj (lua_State *L, const TValue *o,
                                                        TMS event);

3rd/lua/lua.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lua.c,v 1.226 2015/08/14 19:11:20 roberto Exp $
+** $Id: lua.c,v 1.230.1.1 2017/04/19 17:29:57 roberto Exp $
 ** Lua stand-alone interpreter
 ** See Copyright Notice in lua.h
 */
@@ -21,6 +21,7 @@
 #include "lstring.h"
 
 
+
 #if !defined(LUA_PROMPT)
 #define LUA_PROMPT		"> "
 #define LUA_PROMPT2		">> "
@@ -38,8 +39,7 @@
 #define LUA_INIT_VAR		"LUA_INIT"
 #endif
 
-#define LUA_INITVARVERSION  \
-	LUA_INIT_VAR "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
+#define LUA_INITVARVERSION	LUA_INIT_VAR LUA_VERSUFFIX
 
 
 /*
@@ -56,6 +56,8 @@
 #elif defined(LUA_USE_WINDOWS)	/* }{ */
 
 #include <io.h>
+#include <windows.h>
+
 #define lua_stdin_is_tty()	_isatty(_fileno(stdin))
 
 #else				/* }{ */
@@ -137,7 +139,7 @@ static void print_usage (const char *badoption) {
   "Available options are:\n"
   "  -e stat  execute string 'stat'\n"
   "  -i       enter interactive mode after executing 'script'\n"
-  "  -l name  require library 'name'\n"
+  "  -l name  require library 'name' into global 'name'\n"
   "  -v       show version information\n"
   "  -E       ignore environment variables\n"
   "  --       stop handling options\n"
@@ -458,7 +460,7 @@ static int handle_script (lua_State *L, char **argv) {
 /*
 ** Traverses all arguments from 'argv', returning a mask with those
 ** needed before running any Lua code (or an error code if it finds
-** any invalid argument). 'first' returns the first not-handled argument 
+** any invalid argument). 'first' returns the first not-handled argument
 ** (either the script name or a bad argument in case of error).
 */
 static int collectargs (char **argv, int *first) {
@@ -482,7 +484,7 @@ static int collectargs (char **argv, int *first) {
         args |= has_E;
         break;
       case 'i':
-        args |= has_i;  /* (-i implies -v) *//* FALLTHROUGH */ 
+        args |= has_i;  /* (-i implies -v) *//* FALLTHROUGH */
       case 'v':
         if (argv[i][2] != '\0')  /* extra characters after 1st? */
           return has_error;  /* invalid option */
@@ -530,6 +532,7 @@ static int runargs (lua_State *L, char **argv, int n) {
 }
 
 
+
 static int handle_luainit (lua_State *L) {
   const char *name = "=" LUA_INITVARVERSION;
   const char *init = getenv(name + 1);

3rd/lua/lua.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lua.h,v 1.329 2015/11/13 17:18:42 roberto Exp $
+** $Id: lua.h,v 1.332.1.2 2018/06/13 16:58:17 roberto Exp $
 ** Lua - A Scripting Language
 ** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
 ** See Copyright Notice at the end of this file
@@ -19,11 +19,11 @@
 #define LUA_VERSION_MAJOR	"5"
 #define LUA_VERSION_MINOR	"3"
 #define LUA_VERSION_NUM		503
-#define LUA_VERSION_RELEASE	"2"
+#define LUA_VERSION_RELEASE	"5"
 
 #define LUA_VERSION	"Lua " LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
 #define LUA_RELEASE	LUA_VERSION "." LUA_VERSION_RELEASE
-#define LUA_COPYRIGHT	LUA_RELEASE "  Copyright (C) 1994-2015 Lua.org, PUC-Rio"
+#define LUA_COPYRIGHT	LUA_RELEASE "  Copyright (C) 1994-2018 Lua.org, PUC-Rio"
 #define LUA_AUTHORS	"R. Ierusalimschy, L. H. de Figueiredo, W. Celes"
 
 
@@ -363,7 +363,7 @@ LUA_API void      (lua_setallocf) (lua_State *L, lua_Alloc f, void *ud);
 #define lua_pushliteral(L, s)	lua_pushstring(L, "" s)
 
 #define lua_pushglobaltable(L)  \
-	lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS)
+	((void)lua_rawgeti(L, LUA_REGISTRYINDEX, LUA_RIDX_GLOBALS))
 
 #define lua_tostring(L,i)	lua_tolstring(L, (i), NULL)
 
@@ -467,7 +467,7 @@ LUA_API void (lua_checksig_)(lua_State *L);
 #define lua_checksig(L) if (skynet_sig_L) { lua_checksig_(L); }
 
 /******************************************************************************
-* Copyright (C) 1994-2015 Lua.org, PUC-Rio.
+* Copyright (C) 1994-2018 Lua.org, PUC-Rio.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the

3rd/lua/luac.c

@@ -1,5 +1,5 @@
 /*
-** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $
+** $Id: luac.c,v 1.76 2018/06/19 01:32:02 lhf Exp $
 ** Lua compiler (saves bytecodes to files; also lists bytecodes)
 ** See Copyright Notice in lua.h
 */
@@ -208,7 +208,7 @@ int main(int argc, char* argv[])
 }
 
 /*
-** $Id: luac.c,v 1.75 2015/03/12 01:58:27 lhf Exp $
+** $Id: luac.c,v 1.76 2018/06/19 01:32:02 lhf Exp $
 ** print bytecodes
 ** See Copyright Notice in lua.h
 */
@@ -350,6 +350,7 @@ static void PrintCode(const Proto* f)
    case OP_ADD:
    case OP_SUB:
    case OP_MUL:
+   case OP_MOD:
    case OP_POW:
    case OP_DIV:
    case OP_IDIV:

3rd/lua/luaconf.h

@@ -1,5 +1,5 @@
 /*
-** $Id: luaconf.h,v 1.254 2015/10/21 18:17:40 roberto Exp $
+** $Id: luaconf.h,v 1.259.1.1 2017/04/19 17:29:57 roberto Exp $
 ** Configuration file for Lua
 ** See Copyright Notice in lua.h
 */
@@ -158,6 +158,18 @@
 ** ===================================================================
 */
 
+/*
+** LUA_PATH_SEP is the character that separates templates in a path.
+** LUA_PATH_MARK is the string that marks the substitution points in a
+** template.
+** LUA_EXEC_DIR in a Windows path is replaced by the executable's
+** directory.
+*/
+#define LUA_PATH_SEP            ";"
+#define LUA_PATH_MARK           "?"
+#define LUA_EXEC_DIR            "!"
+
+
 /*
 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
 ** Lua libraries.
@@ -404,7 +416,7 @@
 
 /*
 @@ LUA_NUMBER is the floating-point type used by Lua.
-@@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
+@@ LUAI_UACNUMBER is the result of a 'default argument promotion'
 @@ over a floating number.
 @@ l_mathlim(x) corrects limit name 'x' to the proper float type
 ** by prefixing it with one of FLT/DBL/LDBL.
@@ -421,7 +433,8 @@
 
 #define l_floor(x)		(l_mathop(floor)(x))
 
-#define lua_number2str(s,sz,n)	l_sprintf((s), sz, LUA_NUMBER_FMT, (n))
+#define lua_number2str(s,sz,n)  \
+	l_sprintf((s), sz, LUA_NUMBER_FMT, (LUAI_UACNUMBER)(n))
 
 /*
 @@ lua_numbertointeger converts a float number to an integer, or
@@ -498,7 +511,7 @@
 **
 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
 **
-@@ LUAI_UACINT is the result of an 'usual argument conversion'
+@@ LUAI_UACINT is the result of a 'default argument promotion'
 @@ over a lUA_INTEGER.
 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
 @@ LUA_INTEGER_FMT is the format for writing integers.
@@ -511,10 +524,12 @@
 /* The following definitions are good for most cases here */
 
 #define LUA_INTEGER_FMT		"%" LUA_INTEGER_FRMLEN "d"
-#define lua_integer2str(s,sz,n)	l_sprintf((s), sz, LUA_INTEGER_FMT, (n))
 
 #define LUAI_UACINT		LUA_INTEGER
 
+#define lua_integer2str(s,sz,n)  \
+	l_sprintf((s), sz, LUA_INTEGER_FMT, (LUAI_UACINT)(n))
+
 /*
 ** use LUAI_UACINT here to avoid problems with promotions (which
 ** can turn a comparison between unsigneds into a signed comparison)
@@ -606,13 +621,21 @@
 
 
 /*
-@@ lua_number2strx converts a float to an hexadecimal numeric string. 
+@@ lua_pointer2str converts a pointer to a readable string in a
+** non-specified way.
+*/
+#define lua_pointer2str(buff,sz,p)	l_sprintf(buff,sz,"%p",p)
+
+
+/*
+@@ lua_number2strx converts a float to an hexadecimal numeric string.
 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
 ** provide its own implementation.
 */
 #if !defined(LUA_USE_C89)
-#define lua_number2strx(L,b,sz,f,n)	l_sprintf(b,sz,f,n)
+#define lua_number2strx(L,b,sz,f,n)  \
+	((void)L, l_sprintf(b,sz,f,(LUAI_UACNUMBER)(n)))
 #endif
 
 
@@ -728,11 +751,11 @@
 /*
 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
 ** CHANGE it if it uses too much C-stack space. (For long double,
-** 'string.format("%.99f", 1e4932)' needs ~5030 bytes, so a
+** 'string.format("%.99f", -1e4932)' needs 5034 bytes, so a
 ** smaller buffer would force a memory allocation for each call to
 ** 'string.format'.)
 */
-#if defined(LUA_FLOAT_LONGDOUBLE)
+#if LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE
 #define LUAL_BUFFERSIZE		8192
 #else
 #define LUAL_BUFFERSIZE   ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))

3rd/lua/lualib.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lualib.h,v 1.44 2014/02/06 17:32:33 roberto Exp $
+** $Id: lualib.h,v 1.45.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Lua standard libraries
 ** See Copyright Notice in lua.h
 */
@@ -11,6 +11,9 @@
 #include "lua.h"
 
 
+/* version suffix for environment variable names */
+#define LUA_VERSUFFIX          "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR
+
 
 LUAMOD_API int (luaopen_base) (lua_State *L);
 

3rd/lua/lundump.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lundump.c,v 2.44 2015/11/02 16:09:30 roberto Exp $
+** $Id: lundump.c,v 2.44.1.1 2017/04/19 17:20:42 roberto Exp $
 ** load precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
@@ -273,7 +273,7 @@ LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) {
   luaD_inctop(L);
   cl->p = luaF_newproto(L, NULL);
   LoadFunction(&S, cl->p, NULL);
-  lua_assert(cl->nupvalues == cl->p->sizeupvalues);
+  lua_assert(cl->nupvalues == cl->p->sp->sizeupvalues);
   luai_verifycode(L, buff, cl->p);
   return cl;
 }

3rd/lua/lundump.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lundump.h,v 1.45 2015/09/08 15:41:05 roberto Exp $
+** $Id: lundump.h,v 1.45.1.1 2017/04/19 17:20:42 roberto Exp $
 ** load precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */

3rd/lua/lutf8lib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lutf8lib.c,v 1.15 2015/03/28 19:16:55 roberto Exp $
+** $Id: lutf8lib.c,v 1.16.1.1 2017/04/19 17:29:57 roberto Exp $
 ** Standard library for UTF-8 manipulation
 ** See Copyright Notice in lua.h
 */
@@ -171,7 +171,7 @@ static int byteoffset (lua_State *L) {
   }
   else {
     if (iscont(s + posi))
-      luaL_error(L, "initial position is a continuation byte");
+      return luaL_error(L, "initial position is a continuation byte");
     if (n < 0) {
        while (n < 0 && posi > 0) {  /* move back */
          do {  /* find beginning of previous character */
@@ -194,7 +194,7 @@ static int byteoffset (lua_State *L) {
     lua_pushinteger(L, posi + 1);
   else  /* no such character */
     lua_pushnil(L);
-  return 1;  
+  return 1;
 }
 
 

3rd/lua/lvm.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.c,v 2.265 2015/11/23 11:30:45 roberto Exp $
+** $Id: lvm.c,v 2.268.1.1 2017/04/19 17:39:34 roberto Exp $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -163,54 +163,67 @@ static int forlimit (const TValue *obj, lua_Integer *p, lua_Integer step,
 
 
 /*
-** Complete a table access: if 't' is a table, 'tm' has its metamethod;
-** otherwise, 'tm' is NULL.
+** Finish the table access 'val = t[key]'.
+** if 'slot' is NULL, 't' is not a table; otherwise, 'slot' points to
+** t[k] entry (which must be nil).
 */
 void luaV_finishget (lua_State *L, const TValue *t, TValue *key, StkId val,
-                      const TValue *tm) {
+                      const TValue *slot) {
   int loop;  /* counter to avoid infinite loops */
-  lua_assert(tm != NULL || !ttistable(t));
+  const TValue *tm;  /* metamethod */
   for (loop = 0; loop < MAXTAGLOOP; loop++) {
-    if (tm == NULL) {  /* no metamethod (from a table)? */
-      if (ttisnil(tm = luaT_gettmbyobj(L, t, TM_INDEX)))
+    if (slot == NULL) {  /* 't' is not a table? */
+      lua_assert(!ttistable(t));
+      tm = luaT_gettmbyobj(L, t, TM_INDEX);
+      if (ttisnil(tm))
         luaG_typeerror(L, t, "index");  /* no metamethod */
+      /* else will try the metamethod */
     }
-    if (ttisfunction(tm)) {  /* metamethod is a function */
+    else {  /* 't' is a table */
+      lua_assert(ttisnil(slot));
+      tm = fasttm(L, hvalue(t)->metatable, TM_INDEX);  /* table's metamethod */
+      if (tm == NULL) {  /* no metamethod? */
+        setnilvalue(val);  /* result is nil */
+        return;
+      }
+      /* else will try the metamethod */
+    }
+    if (ttisfunction(tm)) {  /* is metamethod a function? */
       luaT_callTM(L, tm, t, key, val, 1);  /* call it */
       return;
     }
-    t = tm;  /* else repeat access over 'tm' */
-    if (luaV_fastget(L,t,key,tm,luaH_get)) {  /* try fast track */
-      setobj2s(L, val, tm);  /* done */
+    t = tm;  /* else try to access 'tm[key]' */
+    if (luaV_fastget(L,t,key,slot,luaH_get)) {  /* fast track? */
+      setobj2s(L, val, slot);  /* done */
       return;
     }
-    /* else repeat */
+    /* else repeat (tail call 'luaV_finishget') */
   }
-  luaG_runerror(L, "gettable chain too long; possible loop");
+  luaG_runerror(L, "'__index' chain too long; possible loop");
 }
 
 
 /*
-** Main function for table assignment (invoking metamethods if needed).
-** Compute 't[key] = val'
+** Finish a table assignment 't[key] = val'.
+** If 'slot' is NULL, 't' is not a table.  Otherwise, 'slot' points
+** to the entry 't[key]', or to 'luaO_nilobject' if there is no such
+** entry.  (The value at 'slot' must be nil, otherwise 'luaV_fastset'
+** would have done the job.)
 */
 void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
-                     StkId val, const TValue *oldval) {
+                     StkId val, const TValue *slot) {
   int loop;  /* counter to avoid infinite loops */
   for (loop = 0; loop < MAXTAGLOOP; loop++) {
-    const TValue *tm;
-    if (oldval != NULL) {
-      Table *h = hvalue(t);
-      lua_assert(ttisnil(oldval));
-      /* must check the metamethod */
-      if ((tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL &&
-         /* no metamethod; is there a previous entry in the table? */
-         (oldval != luaO_nilobject ||
-         /* no previous entry; must create one. (The next test is
-            always true; we only need the assignment.) */
-         (oldval = luaH_newkey(L, h, key), 1))) {
+    const TValue *tm;  /* '__newindex' metamethod */
+    if (slot != NULL) {  /* is 't' a table? */
+      Table *h = hvalue(t);  /* save 't' table */
+      lua_assert(ttisnil(slot));  /* old value must be nil */
+      tm = fasttm(L, h->metatable, TM_NEWINDEX);  /* get metamethod */
+      if (tm == NULL) {  /* no metamethod? */
+        if (slot == luaO_nilobject)  /* no previous entry? */
+          slot = luaH_newkey(L, h, key);  /* create one */
         /* no metamethod and (now) there is an entry with given key */
-        setobj2t(L, cast(TValue *, oldval), val);
+        setobj2t(L, cast(TValue *, slot), val);  /* set its new value */
         invalidateTMcache(h);
         luaC_barrierback(L, h, val);
         return;
@@ -227,11 +240,11 @@ void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
       return;
     }
     t = tm;  /* else repeat assignment over 'tm' */
-    if (luaV_fastset(L, t, key, oldval, luaH_get, val))
+    if (luaV_fastset(L, t, key, slot, luaH_get, val))
       return;  /* done */
     /* else loop */
   }
-  luaG_runerror(L, "settable chain too long; possible loop");
+  luaG_runerror(L, "'__newindex' chain too long; possible loop");
 }
 
 
@@ -749,18 +762,28 @@ void luaV_finishOp (lua_State *L) {
            luai_threadyield(L); }
 
 
+/* fetch an instruction and prepare its execution */
+#define vmfetch()	{ \
+  i = *(ci->u.l.savedpc++); \
+  if (L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT)) \
+    Protect(luaG_traceexec(L)); \
+  ra = RA(i); /* WARNING: any stack reallocation invalidates 'ra' */ \
+  lua_assert(base == ci->u.l.base); \
+  lua_assert(base <= L->top && L->top < L->stack + L->stacksize); \
+}
+
 #define vmdispatch(o)	switch(o)
 #define vmcase(l)	case l:
 #define vmbreak		break
 
 
 /*
-** copy of 'luaV_gettable', but protecting call to potential metamethod
-** (which can reallocate the stack)
+** copy of 'luaV_gettable', but protecting the call to potential
+** metamethod (which can reallocate the stack)
 */
-#define gettableProtected(L,t,k,v)  { const TValue *aux; \
-  if (luaV_fastget(L,t,k,aux,luaH_get)) { setobj2s(L, v, aux); } \
-  else Protect(luaV_finishget(L,t,k,v,aux)); }
+#define gettableProtected(L,t,k,v)  { const TValue *slot; \
+  if (luaV_fastget(L,t,k,slot,luaH_get)) { setobj2s(L, v, slot); } \
+  else Protect(luaV_finishget(L,t,k,v,slot)); }
 
 
 /* same for 'luaV_settable' */
@@ -783,14 +806,9 @@ void luaV_execute (lua_State *L) {
   base = ci->u.l.base;  /* local copy of function's base */
   /* main loop of interpreter */
   for (;;) {
-    Instruction i = *(ci->u.l.savedpc++);
+    Instruction i;
     StkId ra;
-    if (L->hookmask & (LUA_MASKLINE | LUA_MASKCOUNT))
-      Protect(luaG_traceexec(L));
-    /* WARNING: several calls may realloc the stack and invalidate 'ra' */
-    ra = RA(i);
-    lua_assert(base == ci->u.l.base);
-    lua_assert(base <= L->top && L->top < L->stack + L->stacksize);
+    vmfetch();
     vmdispatch (GET_OPCODE(i)) {
       vmcase(OP_MOVE) {
         setobjs2s(L, ra, RB(i));
@@ -1163,7 +1181,7 @@ void luaV_execute (lua_State *L) {
           oci->u.l.savedpc = nci->u.l.savedpc;
           oci->callstatus |= CIST_TAIL;  /* function was tail called */
           ci = L->ci = oci;  /* remove new frame */
-          lua_assert(L->top == oci->u.l.base + getproto(ofunc)->maxstacksize);
+          lua_assert(L->top == oci->u.l.base + getproto(ofunc)->sp->maxstacksize);
           goto newframe;  /* restart luaV_execute over new Lua function */
         }
         vmbreak;
@@ -1183,6 +1201,7 @@ void luaV_execute (lua_State *L) {
         }
       }
       vmcase(OP_FORLOOP) {
+        lua_checksig(L);
         if (ttisinteger(ra)) {  /* integer loop? */
           lua_Integer step = ivalue(ra + 2);
           lua_Integer idx = intop(+, ivalue(ra), step); /* increment index */

3rd/lua/lvm.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.h,v 2.39 2015/09/09 13:44:07 roberto Exp $
+** $Id: lvm.h,v 2.41.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -49,25 +49,24 @@
 
 
 /*
-** fast track for 'gettable': 1 means 'aux' points to resulted value;
-** 0 means 'aux' is metamethod (if 't' is a table) or NULL. 'f' is
-** the raw get function to use.
+** fast track for 'gettable': if 't' is a table and 't[k]' is not nil,
+** return 1 with 'slot' pointing to 't[k]' (final result).  Otherwise,
+** return 0 (meaning it will have to check metamethod) with 'slot'
+** pointing to a nil 't[k]' (if 't' is a table) or NULL (otherwise).
+** 'f' is the raw get function to use.
 */
-#define luaV_fastget(L,t,k,aux,f) \
+#define luaV_fastget(L,t,k,slot,f) \
   (!ttistable(t)  \
-   ? (aux = NULL, 0)  /* not a table; 'aux' is NULL and result is 0 */  \
-   : (aux = f(hvalue(t), k),  /* else, do raw access */  \
-      !ttisnil(aux) ? 1  /* result not nil? 'aux' has it */  \
-      : (aux = fasttm(L, hvalue(t)->metatable, TM_INDEX),  /* get metamethod */\
-         aux != NULL  ? 0  /* has metamethod? must call it */  \
-         : (aux = luaO_nilobject, 1))))  /* else, final result is nil */
+   ? (slot = NULL, 0)  /* not a table; 'slot' is NULL and result is 0 */  \
+   : (slot = f(hvalue(t), k),  /* else, do raw access */  \
+      !ttisnil(slot)))  /* result not nil? */
 
 /*
 ** standard implementation for 'gettable'
 */
-#define luaV_gettable(L,t,k,v) { const TValue *aux; \
-  if (luaV_fastget(L,t,k,aux,luaH_get)) { setobj2s(L, v, aux); } \
-  else luaV_finishget(L,t,k,v,aux); }
+#define luaV_gettable(L,t,k,v) { const TValue *slot; \
+  if (luaV_fastget(L,t,k,slot,luaH_get)) { setobj2s(L, v, slot); } \
+  else luaV_finishget(L,t,k,v,slot); }
 
 
 /*
@@ -91,7 +90,7 @@
 #define luaV_settable(L,t,k,v) { const TValue *slot; \
   if (!luaV_fastset(L,t,k,slot,luaH_get,v)) \
     luaV_finishset(L,t,k,v,slot); }
-  
+
 
 
 LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
@@ -100,9 +99,9 @@ LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
 LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
 LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, int mode);
 LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key,
-                               StkId val, const TValue *tm);
+                               StkId val, const TValue *slot);
 LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
-                               StkId val, const TValue *oldval);
+                               StkId val, const TValue *slot);
 LUAI_FUNC void luaV_finishOp (lua_State *L);
 LUAI_FUNC void luaV_execute (lua_State *L);
 LUAI_FUNC void luaV_concat (lua_State *L, int total);

3rd/lua/lzio.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lzio.c,v 1.37 2015/09/08 15:41:05 roberto Exp $
+** $Id: lzio.c,v 1.37.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */

3rd/lua/lzio.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lzio.h,v 1.31 2015/09/08 15:41:05 roberto Exp $
+** $Id: lzio.h,v 1.31.1.1 2017/04/19 17:20:42 roberto Exp $
 ** Buffered streams
 ** See Copyright Notice in lua.h
 */

HISTORY.md

@@ -1,4 +1,93 @@
-v1.0.0-rc2 (2015-3-7)
+v1.2.0 (2018-11-6)
+-----------
+* Improve cluster support
+* Improve mongodb driver
+* Improve redis driver
+* Improve socket concurrent write
+* Improve socket channel
+* Improve service gate
+* Improve udp support
+* Add skynet.ignoreret
+* Add skynet.trace
+* Add skynet.context
+* Improve skynet.wait/wakeup
+* Add socket.netstat
+* Add socketchannel.overload
+* Fix memory leak for dead service
+* lua update to 5.3.5
+* jemalloc update to 5.1.0
+
+v1.1.0 (2017-10-31)
+-----------
+* add socket.disconnected()
+* fix bugs : see comments for detail
+
+v1.1.0-rc (2017-7-18)
+-----------
+* config file : support include
+* debug console : User config binding IP
+* debug console : Add call command
+* debug console : Report error message of inject code
+* debug console : Change response message
+* sharedata : Add sharedata.flush
+* sharedata : Add sharedata.deepcopy
+* cluster : Add cluster.send
+* cluster : Add API to update config table
+* skynet : Add skynet.state
+* skynet : Keep the order of skynet.wakeup
+* skynet : Add a MEMORY_CHECK macro for debugging
+* httpc : Add httpc.timeout
+* mongo driver : sort support multi-key
+* bson : Check utf8 string
+* bson : No longer support numberic key 
+* daemon mode: Can output the error messages
+* sproto : Support decimal number
+* sproto: Support binary type
+* sproto: Support response nil
+* crypt: Add crypt.hmac64_md5
+* redis: Add redis-cluster support
+* socket server : Optimize socket write (Try direct write from worker thread first)
+* Add prefix skynet to all skynet lua modules
+* datasheet : New module for replacement of sharedata
+* jemalloc : Update to 5.0.1
+* lua : Update to 5.3.4
+* lpeg : Update to 1.0.1
+
+v1.0.0 (2016-7-11)
+-----------
+* Version 1.0.0 Released
+
+v1.0.0-rc5 (2016-7-4)
+-----------
+* MongoDB : Support auth_scram_sha1
+* MongoDB : Auto determine primary host
+* Bugfix : memory leak in multicast
+* Bugfix : Lua 5.3.3
+* Bson : support meta array
+
+v1.0.0-rc4 (2016-6-13)
+-----------
+* Update lua to 5.3.3
+* Update jemalloc to 4.2.1
+* Add debug console command ping
+* Lua bson support __pairs
+* Add mongo.createIndexes and fix bug in old mongo.createIndex
+* Handle signal HUP to reopen log file (for logrotate)
+
+v1.0.0-rc3 (2016-5-9)
+-----------
+* Update jemalloc 4.1.1
+* Update lua 5.3.3 rc1
+* Update sproto to support encoding empty table
+* Make skynet.init stable (keep order)
+* skynet.getenv can return empty string
+* Add lua VM memory warning
+* lua VM support memory limit
+* skynet.pcall suport varargs
+* Bugfix : Global name query
+* Bugfix : snax.queryglobal
+
+v1.0.0-rc2 (2016-3-7)
 -----------
 * Fix a bug in lua 5.3.2
 * Update sproto (fix bugs and add ud for package)

LICENSE

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2012-2015 codingnow.com
+Copyright (c) 2012-2017 codingnow.com
 
 Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in

Makefile

@@ -45,10 +45,26 @@ update3rd :
 # skynet
 
 CSERVICE = snlua logger gate harbor
-LUA_CLIB = skynet socketdriver bson mongo md5 netpack \
-  clientsocket memory profile multicast \
-  cluster crypt sharedata stm sproto lpeg \
-  mysqlaux debugchannel
+LUA_CLIB = skynet \
+  client \
+  bson md5 sproto lpeg
+
+LUA_CLIB_SKYNET = \
+  lua-skynet.c lua-seri.c \
+  lua-socket.c \
+  lua-mongo.c \
+  lua-netpack.c \
+  lua-memory.c \
+  lua-profile.c \
+  lua-multicast.c \
+  lua-cluster.c \
+  lua-crypt.c lsha1.c \
+  lua-sharedata.c \
+  lua-stm.c \
+  lua-mysqlaux.c \
+  lua-debugchannel.c \
+  lua-datasheet.c \
+  \
 
 SKYNET_SRC = skynet_main.c skynet_handle.c skynet_module.c skynet_mq.c \
   skynet_server.c skynet_start.c skynet_timer.c skynet_error.c \
@@ -76,66 +92,30 @@ endef
 
 $(foreach v, $(CSERVICE), $(eval $(call CSERVICE_TEMP,$(v))))
 
-$(LUA_CLIB_PATH)/skynet.so : lualib-src/lua-skynet.c lualib-src/lua-seri.c | $(LUA_CLIB_PATH)
+$(LUA_CLIB_PATH)/skynet.so : $(addprefix lualib-src/,$(LUA_CLIB_SKYNET)) | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) $^ -o $@ -Iskynet-src -Iservice-src -Ilualib-src
 
-$(LUA_CLIB_PATH)/socketdriver.so : lualib-src/lua-socket.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) $^ -o $@ -Iskynet-src -Iservice-src
-
 $(LUA_CLIB_PATH)/bson.so : lualib-src/lua-bson.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) -Iskynet-src $^ -o $@ -Iskynet-src
 
-$(LUA_CLIB_PATH)/mongo.so : lualib-src/lua-mongo.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) $^ -o $@ -Iskynet-src
-
 $(LUA_CLIB_PATH)/md5.so : 3rd/lua-md5/md5.c 3rd/lua-md5/md5lib.c 3rd/lua-md5/compat-5.2.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) -I3rd/lua-md5 $^ -o $@ 
 
-$(LUA_CLIB_PATH)/netpack.so : lualib-src/lua-netpack.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) $^ -Iskynet-src -o $@ 
-
-$(LUA_CLIB_PATH)/clientsocket.so : lualib-src/lua-clientsocket.c | $(LUA_CLIB_PATH)
+$(LUA_CLIB_PATH)/client.so : lualib-src/lua-clientsocket.c lualib-src/lua-crypt.c lualib-src/lsha1.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) $^ -o $@ -lpthread
 
-$(LUA_CLIB_PATH)/memory.so : lualib-src/lua-memory.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) -Iskynet-src $^ -o $@ 
-
-$(LUA_CLIB_PATH)/profile.so : lualib-src/lua-profile.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) $^ -o $@ 
-
-$(LUA_CLIB_PATH)/multicast.so : lualib-src/lua-multicast.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) -Iskynet-src $^ -o $@ 
-
-$(LUA_CLIB_PATH)/cluster.so : lualib-src/lua-cluster.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) -Iskynet-src $^ -o $@ 
-
-$(LUA_CLIB_PATH)/crypt.so : lualib-src/lua-crypt.c lualib-src/lsha1.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) $^ -o $@ 
-
-$(LUA_CLIB_PATH)/sharedata.so : lualib-src/lua-sharedata.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) -Iskynet-src $^ -o $@ 
-
-$(LUA_CLIB_PATH)/stm.so : lualib-src/lua-stm.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) -Iskynet-src $^ -o $@ 
-
 $(LUA_CLIB_PATH)/sproto.so : lualib-src/sproto/sproto.c lualib-src/sproto/lsproto.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) -Ilualib-src/sproto $^ -o $@ 
 
 $(LUA_CLIB_PATH)/lpeg.so : 3rd/lpeg/lpcap.c 3rd/lpeg/lpcode.c 3rd/lpeg/lpprint.c 3rd/lpeg/lptree.c 3rd/lpeg/lpvm.c | $(LUA_CLIB_PATH)
 	$(CC) $(CFLAGS) $(SHARED) -I3rd/lpeg $^ -o $@ 
 
-$(LUA_CLIB_PATH)/mysqlaux.so : lualib-src/lua-mysqlaux.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) $^ -o $@	
-
-$(LUA_CLIB_PATH)/debugchannel.so : lualib-src/lua-debugchannel.c | $(LUA_CLIB_PATH)
-	$(CC) $(CFLAGS) $(SHARED) -Iskynet-src $^ -o $@	
-
 clean :
 	rm -f $(SKYNET_BUILD_PATH)/skynet $(CSERVICE_PATH)/*.so $(LUA_CLIB_PATH)/*.so
 
 cleanall: clean
 ifneq (,$(wildcard 3rd/jemalloc/Makefile))
-	cd 3rd/jemalloc && $(MAKE) clean
+	cd 3rd/jemalloc && $(MAKE) clean && rm Makefile
 endif
 	cd 3rd/lua && $(MAKE) clean
 	rm -f $(LUA_STATICLIB)

README.md

@@ -1,6 +1,10 @@
+## ![skynet logo](https://github.com/cloudwu/skynet/wiki/image/skynet_metro.jpg)
+
+Skynet is a lightweight online game framework, and it can be used in many other fields.
+
 ## Build
 
-For linux, install autoconf first for jemalloc
+For Linux, install autoconf first for jemalloc:
 
 ```
 git clone https://github.com/cloudwu/skynet.git
@@ -8,33 +12,31 @@ cd skynet
 make 'PLATFORM'  # PLATFORM can be linux, macosx, freebsd now
 ```
 
-Or you can :
+Or you can:
 
 ```
 export PLAT=linux
 make
 ```
 
-For freeBSD , use gmake instead of make .
+For FreeBSD , use gmake instead of make.
 
 ## Test
 
-Run these in different console
+Run these in different consoles:
 
 ```
 ./skynet examples/config	# Launch first skynet node  (Gate server) and a skynet-master (see config for standalone option)
 ./3rd/lua/lua examples/client.lua 	# Launch a client, and try to input hello.
 ```
 
-## About Lua
+## About Lua version
 
-Skynet now use a modify version of lua 5.3.2 ( http://www.lua.org/ftp/lua-5.3.2.tar.gz ) .
+Skynet now uses a modified version of lua 5.3.5 ( https://github.com/ejoy/lua/tree/skynet ) for multiple lua states.
 
-For detail : http://lua-users.org/lists/lua-l/2014-03/msg00489.html
+You can also use official Lua versions, just edit the Makefile by yourself.
 
-You can also use the other official Lua version , edit the makefile by yourself .
+## How To Use (Sorry, currently only available in Chinese)
 
-## How To Use (Sorry, Only in Chinese now)
-
-* Read Wiki https://github.com/cloudwu/skynet/wiki
+* Read Wiki for documents https://github.com/cloudwu/skynet/wiki
 * The FAQ in wiki https://github.com/cloudwu/skynet/wiki/FAQ

examples/agent.lua

@@ -1,6 +1,5 @@
 local skynet = require "skynet"
-local netpack = require "netpack"
-local socket = require "socket"
+local socket = require "skynet.socket"
 local sproto = require "sproto"
 local sprotoloader = require "sprotoloader"
 
@@ -50,7 +49,10 @@ skynet.register_protocol {
 	unpack = function (msg, sz)
 		return host:dispatch(msg, sz)
 	end,
-	dispatch = function (_, _, type, ...)
+	dispatch = function (fd, _, type, ...)
+		assert(fd == client_fd)	-- You can use fd to reply message
+		skynet.ignoreret()	-- session is fd, don't call skynet.ret
+		skynet.trace()
 		if type == "REQUEST" then
 			local ok, result  = pcall(request, ...)
 			if ok then
@@ -92,6 +94,7 @@ end
 
 skynet.start(function()
 	skynet.dispatch("lua", function(_,_, command, ...)
+		skynet.trace()
 		local f = CMD[command]
 		skynet.ret(skynet.pack(f(...)))
 	end)

examples/checkdeadloop.lua

@@ -0,0 +1,30 @@
+local skynet = require "skynet"
+
+local list = {}
+
+local function timeout_check(ti)
+	if not next(list) then
+		return
+	end
+	skynet.sleep(ti)	-- sleep 10 sec
+	for k,v in pairs(list) do
+		skynet.error("timout",ti,k,v)
+	end
+end
+
+skynet.start(function()
+	skynet.error("ping all")
+	local list_ret = skynet.call(".launcher", "lua", "LIST")
+	for addr, desc in pairs(list_ret) do
+		list[addr] = desc
+		skynet.fork(function()
+			skynet.call(addr,"debug","INFO")
+			list[addr] = nil
+		end)
+	end
+	skynet.sleep(0)
+	timeout_check(100)
+	timeout_check(400)
+	timeout_check(500)
+	skynet.exit()
+end)

examples/client.lua

@@ -5,7 +5,7 @@ if _VERSION ~= "Lua 5.3" then
 	error "Use lua 5.3"
 end
 
-local socket = require "clientsocket"
+local socket = require "client.socket"
 local proto = require "proto"
 local sproto = require "sproto"
 

examples/cluster1.lua

@@ -1,8 +1,13 @@
 local skynet = require "skynet"
-local cluster = require "cluster"
-local snax = require "snax"
+local cluster = require "skynet.cluster"
+local snax = require "skynet.snax"
 
 skynet.start(function()
+	cluster.reload {
+		db = "127.0.0.1:2528",
+		db2 = "127.0.0.1:2529",
+	}
+
 	local sdb = skynet.newservice("simpledb")
 	-- register name "sdb" for simpledb, you can use cluster.query() later.
 	-- See cluster2.lua

examples/cluster2.lua

@@ -1,21 +1,31 @@
 local skynet = require "skynet"
-local cluster = require "cluster"
+local cluster = require "skynet.cluster"
 
 skynet.start(function()
-	-- query name "sdb" of cluster db.
-	local sdb = cluster.query("db", "sdb")
-	print("db.sbd=",sdb)
-	local proxy = cluster.proxy("db", sdb)
+	local proxy = cluster.proxy "db@sdb"	-- cluster.proxy("db", "@sdb")
 	local largekey = string.rep("X", 128*1024)
 	local largevalue = string.rep("R", 100 * 1024)
-	print(skynet.call(proxy, "lua", "SET", largekey, largevalue))
+	skynet.call(proxy, "lua", "SET", largekey, largevalue)
 	local v = skynet.call(proxy, "lua", "GET", largekey)
 	assert(largevalue == v)
+	skynet.send(proxy, "lua", "PING", "proxy")
 
-	print(cluster.call("db", sdb, "GET", "a"))
-	print(cluster.call("db2", sdb, "GET", "b"))
+	skynet.fork(function()
+		skynet.trace("cluster")
+		print(cluster.call("db", "@sdb", "GET", "a"))
+		print(cluster.call("db2", "@sdb", "GET", "b"))
+		cluster.send("db2", "@sdb", "PING", "db2:longstring" .. largevalue)
+	end)
 
 	-- test snax service
-	local pingserver = cluster.snax("db", "pingserver")
+	skynet.timeout(300,function()
+		cluster.reload {
+			db = false,	-- db is down
+			db3 = "127.0.0.1:2529"
+		}
+		print(pcall(cluster.call, "db", "@sdb", "GET", "a"))	-- db is down
+	end)
+	cluster.reload { __nowaiting = false }
+	local pingserver = cluster.snax("db3", "pingserver")
 	print(pingserver.req.ping "hello")
 end)

examples/clustername.lua

@@ -1,2 +1,4 @@
+__nowaiting = true	-- If you turn this flag off, cluster.call would block when node name is absent
+
 db = "127.0.0.1:2528"
 db2 = "127.0.0.1:2529"

examples/config

@@ -1,4 +1,6 @@
-root = "./"
+include "config.path"
+
+-- preload = "./examples/preload.lua"	-- run preload.lua before every lua service run
 thread = 8
 logger = nil
 logpath = "."
@@ -8,10 +10,6 @@ master = "127.0.0.1:2013"
 start = "main"	-- main script
 bootstrap = "snlua bootstrap"	-- The service for bootstrap
 standalone = "0.0.0.0:2013"
-luaservice = root.."service/?.lua;"..root.."test/?.lua;"..root.."examples/?.lua"
-lualoader = "lualib/loader.lua"
--- preload = "./examples/preload.lua"	-- run preload.lua before every lua service run
-snax = root.."examples/?.lua;"..root.."test/?.lua"
 -- snax_interface_g = "snax_g"
 cpath = root.."cservice/?.so"
 -- daemon = "./skynet.pid"

examples/config.c1

@@ -6,5 +6,6 @@ bootstrap = "snlua bootstrap"	-- The service for bootstrap
 luaservice = "./service/?.lua;./test/?.lua;./examples/?.lua"
 lualoader = "lualib/loader.lua"
 cpath = "./cservice/?.so"
-cluster = "./examples/clustername.lua"
+-- use cluster.reload instead, see cluster1.lua
+-- cluster = "./examples/clustername.lua"
 snax = "./test/?.lua"

examples/config.mongodb

@@ -0,0 +1,11 @@
+root = "./"
+thread = 8
+logger = nil
+harbor = 0
+start = "main_mongodb"	-- main script
+bootstrap = "snlua bootstrap"	-- The service for bootstrap
+luaservice = root.."service/?.lua;"..root.."test/?.lua;"..root.."examples/?.lua"
+lualoader = "lualib/loader.lua"
+snax = root.."examples/?.lua;"..root.."test/?.lua"
+cpath = root.."cservice/?.so"
+-- daemon = "./skynet.pid"

examples/config.path

@@ -0,0 +1,6 @@
+root = "./"
+luaservice = root.."service/?.lua;"..root.."test/?.lua;"..root.."examples/?.lua;"..root.."test/?/init.lua"
+lualoader = root .. "lualib/loader.lua"
+lua_path = root.."lualib/?.lua;"..root.."lualib/?/init.lua"
+lua_cpath = root .. "luaclib/?.so"
+snax = root.."examples/?.lua;"..root.."test/?.lua"

examples/login/client.lua

@@ -1,7 +1,7 @@
 package.cpath = "luaclib/?.so"
 
-local socket = require "clientsocket"
-local crypt = require "crypt"
+local socket = require "client.socket"
+local crypt = require "client.crypt"
 
 if _VERSION ~= "Lua 5.3" then
 	error "Use lua 5.3"

examples/login/gated.lua

@@ -1,5 +1,5 @@
 local msgserver = require "snax.msgserver"
-local crypt = require "crypt"
+local crypt = require "skynet.crypt"
 local skynet = require "skynet"
 
 local loginservice = tonumber(...)

examples/login/logind.lua

@@ -1,5 +1,5 @@
 local login = require "snax.loginserver"
-local crypt = require "crypt"
+local crypt = require "skynet.crypt"
 local skynet = require "skynet"
 
 local server = {

examples/main.lua

@@ -4,9 +4,11 @@ local sprotoloader = require "sprotoloader"
 local max_client = 64
 
 skynet.start(function()
-	print("Server start")
+	skynet.error("Server start")
 	skynet.uniqueservice("protoloader")
-	local console = skynet.newservice("console")
+	if not skynet.getenv "daemon" then
+		local console = skynet.newservice("console")
+	end
 	skynet.newservice("debug_console",8000)
 	skynet.newservice("simpledb")
 	local watchdog = skynet.newservice("watchdog")
@@ -15,7 +17,6 @@ skynet.start(function()
 		maxclient = max_client,
 		nodelay = true,
 	})
-	print("Watchdog listen on ", 8888)
-
+	skynet.error("Watchdog listen on", 8888)
 	skynet.exit()
 end)

examples/main_mongodb.lua

@@ -0,0 +1,12 @@
+local skynet = require "skynet"
+
+
+skynet.start(function()
+	print("Main Server start")
+	local console = skynet.newservice(
+		"testmongodb", "127.0.0.1", 27017, "testdb", "test", "test"
+	)
+	
+	print("Main Server exit")
+	skynet.exit()
+end)

examples/share.lua

@@ -1,5 +1,5 @@
 local skynet = require "skynet"
-local sharedata = require "sharedata"
+local sharedata = require "skynet.sharedata"
 
 local mode = ...
 

examples/simpledb.lua

@@ -16,12 +16,23 @@ end
 
 skynet.start(function()
 	skynet.dispatch("lua", function(session, address, cmd, ...)
-		local f = command[string.upper(cmd)]
+		cmd = cmd:upper()
+		if cmd == "PING" then
+			assert(session == 0)
+			local str = (...)
+			if #str > 20 then
+				str = str:sub(1,20) .. "...(" .. #str .. ")"
+			end
+			skynet.error(string.format("%s ping %s", skynet.address(address), str))
+			return
+		end
+		local f = command[cmd]
 		if f then
 			skynet.ret(skynet.pack(f(...)))
 		else
 			error(string.format("Unknown command %s", tostring(cmd)))
 		end
 	end)
+--	skynet.traceproto("lua", false)	-- true off tracelog
 	skynet.register "SIMPLEDB"
 end)

examples/simpleweb.lua

@@ -1,5 +1,5 @@
 local skynet = require "skynet"
-local socket = require "socket"
+local socket = require "skynet.socket"
 local httpd = require "http.httpd"
 local sockethelper = require "http.sockethelper"
 local urllib = require "http.url"

examples/userlog.lua

@@ -1,15 +1,25 @@
 local skynet = require "skynet"
 require "skynet.manager"
 
+-- register protocol text before skynet.start would be better.
 skynet.register_protocol {
 	name = "text",
 	id = skynet.PTYPE_TEXT,
 	unpack = skynet.tostring,
 	dispatch = function(_, address, msg)
-		print(string.format("%x(%.2f): %s", address, skynet.time(), msg))
+		print(string.format(":%08x(%.2f): %s", address, skynet.time(), msg))
+	end
+}
+
+skynet.register_protocol {
+	name = "SYSTEM",
+	id = skynet.PTYPE_SYSTEM,
+	unpack = function(...) return ... end,
+	dispatch = function()
+		-- reopen signal
+		print("SIGHUP")
 	end
 }
 
 skynet.start(function()
-	skynet.register ".logger"
 end)

examples/watchdog.lua

@@ -1,5 +1,4 @@
 local skynet = require "skynet"
-local netpack = require "netpack"
 
 local CMD = {}
 local SOCKET = {}

lualib-src/lsha1.c

@@ -82,6 +82,8 @@ A million repetitions of "a"
   34AA973C D4C4DAA4	F61EEB2B DBAD2731 6534016F
 */
 
+#define LUA_LIB
+
 #include <stdio.h>
 #include <string.h>
 #include <stdint.h>
@@ -269,7 +271,7 @@ xor_key(uint8_t key[BLOCKSIZE], uint32_t xor) {
 	}
 }
 
-int
+LUAMOD_API int
 lhmac_sha1(lua_State *L) {
 	size_t key_sz = 0;
 	const uint8_t * key = (const uint8_t *)luaL_checklstring(L, 1, &key_sz);

lualib-src/lua-bson.c

@@ -1,3 +1,5 @@
+#define LUA_LIB
+
 #include <lua.h>
 #include <lauxlib.h>
 
@@ -198,10 +200,50 @@ write_length(struct bson *b, int32_t v, int off) {
 	b->ptr[off++] = (uv >> 24)&0xff;
 }
 
+#define MAXUNICODE	0x10FFFF
+
+static int
+utf8_copy(const char *s, char *d, size_t limit) {
+	static const unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF};
+	unsigned int c = s[0];
+	unsigned int res = 0;
+	if (limit < 1)
+		return 0;
+	d[0] = s[0];
+	if (c < 0x80) {
+		return 1;
+	} else {
+		int count = 0;
+		while (c & 0x40) {
+			int cc = s[++count];
+			if (limit <= count || (cc & 0xC0) != 0x80)
+				return 0;
+			d[count] = s[count];
+			res = (res << 6) | (cc & 0x3F);
+			c <<= 1;
+		}
+		res |= ((c & 0x7F) << (count * 5));
+		if (count > 3 || res > MAXUNICODE || res <= limits[count])
+			return 0;
+		return count+1;
+	}
+}
+
 static void
-write_string(struct bson *b, const char *key, size_t sz) {
+write_string(struct bson *b, lua_State *L, const char *key, size_t sz) {
 	bson_reserve(b,sz+1);
-	memcpy(b->ptr + b->size, key, sz);
+	char *dst = (char *)(b->ptr + b->size);
+	const char *src = key;
+	size_t n = sz;
+	while(n > 0) {
+		int c = utf8_copy(src, dst, n);
+		if (c == 0) {
+			luaL_error(L, "Invalid utf8 string");
+		}
+		src += c;
+		dst += c;
+		n -= c;
+	}
 	b->ptr[b->size+sz] = '\0';
 	b->size+=sz+1;
 }
@@ -238,12 +280,10 @@ write_double(struct bson *b, lua_Number d) {
 	}
 }
 
-static void pack_dict(lua_State *L, struct bson *b, bool array, int depth);
-
 static inline void
-append_key(struct bson *bs, int type, const char *key, size_t sz) {
+append_key(struct bson *bs, lua_State *L, int type, const char *key, size_t sz) {
 	write_byte(bs, type);
-	write_string(bs, key, sz);
+	write_string(bs, L, key, sz);
 }
 
 static inline int
@@ -256,38 +296,20 @@ append_number(struct bson *bs, lua_State *L, const char *key, size_t sz) {
 	if (lua_isinteger(L, -1)) {
 		int64_t i = lua_tointeger(L, -1);
 		if (is_32bit(i)) {
-			append_key(bs, BSON_INT32, key, sz);
+			append_key(bs, L, BSON_INT32, key, sz);
 			write_int32(bs, i);
 		} else {
-			append_key(bs, BSON_INT64, key, sz);
+			append_key(bs, L, BSON_INT64, key, sz);
 			write_int64(bs, i);
 		}
 	} else {
 		lua_Number d = lua_tonumber(L,-1);
-		append_key(bs, BSON_REAL, key, sz);
+		append_key(bs, L, BSON_REAL, key, sz);
 		write_double(bs, d);
 	}
 }
 
-static void
-append_table(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth) {
-	size_t len = lua_rawlen(L, -1);
-	bool isarray = false;
-	if (len > 0) {
-		lua_pushinteger(L, len);
-		if (lua_next(L,-2) == 0) {
-			isarray = true;
-		} else {
-			lua_pop(L,2);
-		}
-	}
-	if (isarray) {
-		append_key(bs, BSON_ARRAY, key, sz);
-	} else {
-		append_key(bs, BSON_DOCUMENT, key, sz);
-	}
-	pack_dict(L, bs, isarray, depth);
-}
+static void append_table(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth);
 
 static void
 write_binary(struct bson *b, const void * buffer, size_t sz) {
@@ -306,7 +328,7 @@ append_one(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth)
 		append_number(bs, L, key, sz);
 		break;
 	case LUA_TUSERDATA: {
-		append_key(bs, BSON_DOCUMENT, key, sz);
+		append_key(bs, L, BSON_DOCUMENT, key, sz);
 		int32_t * doc = lua_touserdata(L,-1);
 		int32_t sz = *doc;
 		bson_reserve(bs,sz);
@@ -319,7 +341,7 @@ append_one(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth)
 		const char * str = lua_tolstring(L,-1,&len);
 		if (len > 1 && str[0]==0) {
 			int subt = (uint8_t)str[1];
-			append_key(bs, subt, key, sz);
+			append_key(bs, L, subt, key, sz);
 			switch(subt) {
 			case BSON_BINARY:
 				write_binary(bs, str+2, len-2);
@@ -365,8 +387,8 @@ append_one(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth)
 						break;
 					}
 				}
-				write_string(bs, str, len-i-1);
-				write_string(bs, str + len-i, i);
+				write_string(bs, L, str, len-i-1);
+				write_string(bs, L, str + len-i, i);
 				break;
 			}
 			case BSON_MINKEY:
@@ -379,9 +401,9 @@ append_one(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth)
 		} else {
 			size_t len;
 			const char * str = lua_tolstring(L,-1,&len);
-			append_key(bs, BSON_STRING, key, sz);
+			append_key(bs, L, BSON_STRING, key, sz);
 			int off = reserve_length(bs);
-			write_string(bs, str, len);
+			write_string(bs, L, str, len);
 			write_length(bs, len+1, off);		
 		}
 		break;
@@ -390,9 +412,11 @@ append_one(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth)
 		append_table(bs, L, key, sz, depth+1);
 		break;
 	case LUA_TBOOLEAN:
-		append_key(bs, BSON_BOOLEAN, key, sz);
+		append_key(bs, L, BSON_BOOLEAN, key, sz);
 		write_byte(bs, lua_toboolean(L,-1));
 		break;
+	case LUA_TNIL:
+		luaL_error(L, "Bson array has a hole (nil), Use bson.null instead");
 	default:
 		luaL_error(L, "Invalid value type : %s", lua_typename(L,vt));
 	}
@@ -409,66 +433,132 @@ bson_numstr( char *str, unsigned int i ) {
 }
 
 static void
-pack_dict(lua_State *L, struct bson *b, bool isarray, int depth) {
-	if (depth > MAX_DEPTH) {
-		luaL_error(L, "Too depth while encoding bson");
-	}
-	luaL_checkstack(L, 16, NULL);	// reserve enough stack space to pack table
+pack_array(lua_State *L, struct bson *b, int depth, size_t len) {
 	int length = reserve_length(b);
-	lua_pushnil(L);
-	while(lua_next(L,-2) != 0) {
-		int kt = lua_type(L, -2);
+	size_t i;
+	for (i=1;i<=len;i++) {
 		char numberkey[32];
-		const char * key = NULL;
-		size_t sz;
-		if (isarray) {
-			if (kt != LUA_TNUMBER) {
-				luaL_error(L, "Invalid array key type : %s", lua_typename(L, kt));
-				return;
-			}
-			sz = bson_numstr(numberkey, (unsigned int)lua_tointeger(L,-2)-1);
-			key = numberkey;
-
-			append_one(b, L, key, sz, depth);
-			lua_pop(L,1);
-		} else {
-			switch(kt) {
-			case LUA_TNUMBER:
-				// copy key, don't change key type
-				lua_pushvalue(L,-2);
-				lua_insert(L,-2);
-				key = lua_tolstring(L,-2,&sz);
-				append_one(b, L, key, sz, depth);
-				lua_pop(L,2);
-				break;
-			case LUA_TSTRING:
-				key = lua_tolstring(L,-2,&sz);
-				append_one(b, L, key, sz, depth);
-				lua_pop(L,1);
-				break;
-			default:
-				luaL_error(L, "Invalid key type : %s", lua_typename(L, kt));
-				return;
-			}
-		}
+		size_t sz = bson_numstr(numberkey, i - 1);
+		const char * key = numberkey;
+		lua_geti(L, -1, i);
+		append_one(b, L, key, sz, depth);
+		lua_pop(L, 1);
 	}
 	write_byte(b,0);
 	write_length(b, b->size - length, length);
 }
 
+static void
+pack_dict_data(lua_State *L, struct bson *b, int depth, int kt) {
+	const char * key = NULL;
+	size_t sz;
+	switch(kt) {
+	case LUA_TNUMBER:
+		luaL_error(L, "Bson dictionary's key can't be number");
+		break;
+	case LUA_TSTRING:
+		key = lua_tolstring(L,-2,&sz);
+		append_one(b, L, key, sz, depth);
+		lua_pop(L,1);
+		break;
+	default:
+		luaL_error(L, "Invalid key type : %s", lua_typename(L, kt));
+		return;
+	}
+}
+
+static void
+pack_simple_dict(lua_State *L, struct bson *b, int depth) {
+	int length = reserve_length(b);
+	lua_pushnil(L);
+	while(lua_next(L,-2) != 0) {
+		int kt = lua_type(L, -2);
+		pack_dict_data(L, b, depth, kt);
+	}
+	write_byte(b,0);
+	write_length(b, b->size - length, length);
+}
+
+static void
+pack_meta_dict(lua_State *L, struct bson *b, int depth) {
+	int length = reserve_length(b);
+
+	lua_pushvalue(L, -2); // push meta_obj
+	lua_call(L, 1, 3); // call __pairs_func => next_func, t_data, first_k
+	for(;;) {
+		lua_pushvalue(L, -2); // copy data
+		lua_pushvalue(L, -2); // copy k
+		lua_copy(L, -5, -3); // copy next_func replace old_k
+		lua_call(L, 2, 2); // call next_func
+
+		int kt = lua_type(L, -2);
+		if (kt == LUA_TNIL) {
+			lua_pop(L, 4); // pop all k, v, next_func, obj
+			break;
+		}
+		pack_dict_data(L, b, depth, kt);
+	}
+	write_byte(b,0);
+	write_length(b, b->size - length, length);
+}
+
+static bool
+is_rawarray(lua_State *L) {
+	size_t len = lua_rawlen(L, -1);
+	if (len > 0) {
+		lua_pushinteger(L, len);
+		if (lua_next(L,-2) == 0) {
+			return true;
+		} else {
+			lua_pop(L,2);
+		}
+	}
+	return false;
+}
+
+static void
+append_table(struct bson *bs, lua_State *L, const char *key, size_t sz, int depth) {
+	if (depth > MAX_DEPTH) {
+		luaL_error(L, "Too depth while encoding bson");
+	}
+	luaL_checkstack(L, 16, NULL);	// reserve enough stack space to pack table
+	if (luaL_getmetafield(L, -1, "__len") != LUA_TNIL) {
+		lua_pushvalue(L, -2);
+		lua_call(L, 1, 1);
+		if (!lua_isinteger(L, -1)) {
+			luaL_error(L, "__len should return integer");
+		}
+		size_t len = lua_tointeger(L, -1);
+		lua_pop(L, 1);
+		append_key(bs, L, BSON_ARRAY, key, sz);
+		pack_array(L, bs, depth, len);
+	} else if (luaL_getmetafield(L, -1, "__pairs") != LUA_TNIL) {
+		append_key(bs, L, BSON_DOCUMENT, key, sz);
+		pack_meta_dict(L, bs, depth);
+	} else if (is_rawarray(L)) {
+		append_key(bs, L, BSON_ARRAY, key, sz);
+		pack_array(L, bs, depth, lua_rawlen(L, -1));
+	} else {
+		append_key(bs, L, BSON_DOCUMENT, key, sz);
+		pack_simple_dict(L, bs, depth);
+	}
+}
+
 static void
 pack_ordered_dict(lua_State *L, struct bson *b, int n, int depth) {
 	int length = reserve_length(b);
 	int i;
+	size_t sz;
+	// the first key is at index n
+	const char * key = lua_tolstring(L, n, &sz);
 	for (i=0;i<n;i+=2) {
-		size_t sz;
-		const char * key = lua_tolstring(L, i+1, &sz);
 		if (key == NULL) {
 			luaL_error(L, "Argument %d need a string", i+1);
 		}
-		lua_pushvalue(L, i+2);
+		lua_pushvalue(L, i+1);
 		append_one(b, L, key, sz, depth);
 		lua_pop(L,1);
+		key = lua_tolstring(L, i+2, &sz);	// next key
 	}
 	write_byte(b,0);
 	write_length(b, b->size - length, length);
@@ -847,32 +937,66 @@ bson_meta(lua_State *L) {
 	lua_setmetatable(L, -2);
 }
 
+static int
+encode_bson(lua_State *L) {
+	struct bson *b = lua_touserdata(L, 2);
+	lua_settop(L, 1);
+	if (luaL_getmetafield(L, -1, "__pairs") != LUA_TNIL) {
+		pack_meta_dict(L, b, 0);
+	} else {
+		pack_simple_dict(L, b, 0);
+	}
+	void * ud = lua_newuserdata(L, b->size);
+	memcpy(ud, b->ptr, b->size);
+	return 1;
+}
+
 static int
 lencode(lua_State *L) {
 	struct bson b;
-	bson_create(&b);
 	lua_settop(L,1);
 	luaL_checktype(L, 1, LUA_TTABLE);
-	pack_dict(L, &b, false, 0);
-	void * ud = lua_newuserdata(L, b.size);
-	memcpy(ud, b.ptr, b.size);
+	bson_create(&b);
+	lua_pushcfunction(L, encode_bson);
+	lua_pushvalue(L, 1);
+	lua_pushlightuserdata(L, &b);
+	if (lua_pcall(L, 2, 1, 0) != LUA_OK) {
+		bson_destroy(&b);
+		return lua_error(L);
+	}
 	bson_destroy(&b);
 	bson_meta(L);
 	return 1;
 }
 
+static int
+encode_bson_byorder(lua_State *L) {
+	int n = lua_gettop(L);
+	struct bson *b = lua_touserdata(L, n);
+	lua_settop(L, --n);
+	pack_ordered_dict(L, b, n, 0);
+	lua_settop(L,0);
+	void * ud = lua_newuserdata(L, b->size);
+	memcpy(ud, b->ptr, b->size);
+	return 1;
+}
+
 static int
 lencode_order(lua_State *L) {
 	struct bson b;
-	bson_create(&b);
 	int n = lua_gettop(L);
 	if (n%2 != 0) {
 		return luaL_error(L, "Invalid ordered dict");
 	}
-	pack_ordered_dict(L, &b, n, 0);
-	lua_settop(L,1);
-	void * ud = lua_newuserdata(L, b.size);
-	memcpy(ud, b.ptr, b.size);
+	bson_create(&b);
+	lua_pushvalue(L, 1);	// copy the first arg to n
+	lua_pushcfunction(L, encode_bson_byorder);
+	lua_replace(L, 1);
+	lua_pushlightuserdata(L, &b);
+	if (lua_pcall(L, n+1, 1, 0) != LUA_OK) {
+		bson_destroy(&b);
+		return lua_error(L);
+	}
 	bson_destroy(&b);
 	bson_meta(L);
 	return 1;
@@ -1164,7 +1288,7 @@ lobjectid(lua_State *L) {
 	return 1;
 }
 
-int
+LUAMOD_API int
 luaopen_bson(lua_State *L) {
 	luaL_checkversion(L);
 	int i;

lualib-src/lua-clientsocket.c

@@ -2,6 +2,8 @@
 // It's only for demo, limited feature. Don't use it in your project.
 // Rewrite socket library by yourself .
 
+#define LUA_LIB
+
 #include <lua.h>
 #include <lauxlib.h>
 #include <string.h>
@@ -183,8 +185,8 @@ lreadstdin(lua_State *L) {
 	return 1;
 }
 
-int
-luaopen_clientsocket(lua_State *L) {
+LUAMOD_API int
+luaopen_client_socket(lua_State *L) {
 	luaL_checkversion(L);
 	luaL_Reg l[] = {
 		{ "connect", lconnect },