Lua 3.23.2

1 files changed, 61 insertions, 65 deletions

diff --git a/src/luac/dump.c b/src/luac/dump.c
index ce9551e6..479ce5d4 100644
--- a/src/luac/dump.c
+++ b/src/luac/dump.c
@@ -1,16 +1,20 @@
 /*
-** $Id: dump.c,v 1.11 1998/07/12 00:17:37 lhf Exp $
+** $Id: dump.c,v 1.20 1999/07/02 19:34:26 lhf Exp $
 ** save bytecodes to file
 ** See Copyright Notice in lua.h
 */
 
+#include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "luac.h"
 
-#define NotWord(x)		((unsigned short)x!=x)
+#ifdef OLD_ANSI
+#define strerror(e)     "(no error message provided by operating system)"
+#endif
+
 #define DumpBlock(b,size,D)	fwrite(b,size,1,D)
-#define	DumpNative(t,D)		DumpBlock(&t,sizeof(t),D)
+#define	DumpInt			DumpLong
 
 static void DumpWord(int i, FILE* D)
 {
@@ -28,43 +32,24 @@ static void DumpLong(long i, FILE* D)
  DumpWord(lo,D);
 }
 
-#if ID_NUMBER==ID_REAL4
-/* LUA_NUMBER */
-/* assumes sizeof(long)==4 and sizeof(float)==4 (IEEE) */
-static void DumpFloat(float f, FILE* D)
+static void DumpNumber(real x, FILE* D, int native, TProtoFunc* tf)
 {
- long l=*(long*)&f;
- DumpLong(l,D);
-}
-#endif
-
-#if ID_NUMBER==ID_REAL8
-/* LUA_NUMBER */
-/* assumes sizeof(long)==4 and sizeof(double)==8 (IEEE) */
-static void DumpDouble(double f, FILE* D)
-{
- long* l=(long*)&f;
- int x=1;
- if (*(char*)&x==1)			/* little-endian */
- {
-  DumpLong(l[1],D);
-  DumpLong(l[0],D);
- }
- else					/* big-endian */
+ if (native)
+  DumpBlock(&x,sizeof(x),D);
+ else
  {
-  DumpLong(l[0],D);
-  DumpLong(l[1],D);
+  char b[256];
+  int n;
+  sprintf(b,NUMBER_FMT"%n",x,&n);
+  luaU_str2d(b,tf->source->str);	/* help lundump not to fail */
+  fputc(n,D);
+  DumpBlock(b,n,D);
  }
 }
-#endif
 
 static void DumpCode(TProtoFunc* tf, FILE* D)
 {
- int size=CodeSize(tf);
- if (NotWord(size))
-  fprintf(stderr,"luac: warning: "
-	"\"%s\":%d code too long for 16-bit machines (%d bytes)\n",
-	fileName(tf),tf->lineDefined,size);
+ int size=luaU_codesize(tf);
  DumpLong(size,D);
  DumpBlock(tf->code,size,D);
 }
@@ -72,87 +57,98 @@ static void DumpCode(TProtoFunc* tf, FILE* D)
 static void DumpString(char* s, int size, FILE* D)
 {
  if (s==NULL)
-  DumpWord(0,D);
+  DumpLong(0,D);
  else
  {
-  if (NotWord(size))
-   luaL_verror("string too long (%d bytes): \"%.32s...\"",size,s);
-  DumpWord(size,D);
+  DumpLong(size,D);
   DumpBlock(s,size,D);
  }
 }
 
 static void DumpTString(TaggedString* s, FILE* D)
 {
- if (s==NULL) DumpString(NULL,0,D); else DumpString(s->str,s->u.s.len+1,D);
+ if (s==NULL)
+  DumpString(NULL,0,D);
+ else
+  DumpString(s->str,s->u.s.len+1,D);
 }
 
 static void DumpLocals(TProtoFunc* tf, FILE* D)
 {
- int n;
- LocVar* lv;
- for (n=0,lv=tf->locvars; lv && lv->line>=0; lv++) ++n;
- DumpWord(n,D);
- for (lv=tf->locvars; lv && lv->line>=0; lv++)
+ if (tf->locvars==NULL)
+  DumpInt(0,D);
+ else
  {
-  DumpWord(lv->line,D);
-  DumpTString(lv->varname,D);
+  LocVar* v;
+  int n=0;
+  for (v=tf->locvars; v->line>=0; v++)
+   ++n;
+  DumpInt(n,D);
+  for (v=tf->locvars; v->line>=0; v++)
+  {
+   DumpInt(v->line,D);
+   DumpTString(v->varname,D);
+  }
  }
 }
 
-static void DumpFunction(TProtoFunc* tf, FILE* D);
+static void DumpFunction(TProtoFunc* tf, FILE* D, int native);
 
-static void DumpConstants(TProtoFunc* tf, FILE* D)
+static void DumpConstants(TProtoFunc* tf, FILE* D, int native)
 {
  int i,n=tf->nconsts;
- DumpWord(n,D);
+ DumpInt(n,D);
  for (i=0; i<n; i++)
  {
   TObject* o=tf->consts+i;
-  fputc(-ttype(o),D);
+  fputc(-ttype(o),D);			/* ttype(o) is negative - ORDER LUA_T */
   switch (ttype(o))
   {
    case LUA_T_NUMBER:
-	DumpNumber(nvalue(o),D);
+	DumpNumber(nvalue(o),D,native,tf);
 	break;
    case LUA_T_STRING:
 	DumpTString(tsvalue(o),D);
 	break;
    case LUA_T_PROTO:
-	DumpFunction(tfvalue(o),D);
+	DumpFunction(tfvalue(o),D,native);
 	break;
    case LUA_T_NIL:
 	break;
    default:				/* cannot happen */
-	luaL_verror("cannot dump constant #%d: type=%d [%s]",
-		i,ttype(o),luaO_typename(o));
+	luaU_badconstant("dump",i,o,tf);
 	break;
   }
  }
 }
 
-static void DumpFunction(TProtoFunc* tf, FILE* D)
+static void DumpFunction(TProtoFunc* tf, FILE* D, int native)
 {
- DumpWord(tf->lineDefined,D);
- DumpTString(tf->fileName,D);
+ DumpInt(tf->lineDefined,D);
+ DumpTString(tf->source,D);
  DumpCode(tf,D);
  DumpLocals(tf,D);
- DumpConstants(tf,D);
+ DumpConstants(tf,D,native);
+ if (ferror(D))
+  luaL_verror("write error" IN ": %s (errno=%d)",INLOC,strerror(errno),errno);
 }
 
-static void DumpHeader(TProtoFunc* Main, FILE* D)
+static void DumpHeader(TProtoFunc* Main, FILE* D, int native)
 {
- real t=TEST_NUMBER;
  fputc(ID_CHUNK,D);
  fputs(SIGNATURE,D);
  fputc(VERSION,D);
- fputc(ID_NUMBER,D);
- fputc(sizeof(t),D);
- DumpNumber(t,D);
+ if (native)
+ {
+  fputc(sizeof(real),D);
+  DumpNumber(TEST_NUMBER,D,native,Main);
+ }
+ else
+  fputc(0,D);
 }
 
-void DumpChunk(TProtoFunc* Main, FILE* D)
+void luaU_dumpchunk(TProtoFunc* Main, FILE* D, int native)
 {
- DumpHeader(Main,D);
- DumpFunction(Main,D);
+ DumpHeader(Main,D,native);
+ DumpFunction(Main,D,native);
 }