mirror of
https://gitcode.com/JianFeeeee/LuaCangjia_api.git
synced 2026-09-24 19:08:13 +00:00
vendor: 引入 Lua 3.2 官方源码 + 移植评估 (lua_3.2 分支)
- 前 lua_State 时代 API(全局单例状态机), 与项目多实例+管道模式抽象冲突 - 评估结论: 不建议移植, 详见 doc/ADAPTATION-lua32.md
This commit is contained in:
JianFeeeee
@ -1,421 +1,239 @@
|
||||
/*
|
||||
** $Id: lundump.c $
|
||||
** load precompiled Lua chunks
|
||||
** $Id: lundump.c,v 1.21 1999/07/02 19:34:26 lhf Exp $
|
||||
** load bytecodes from files
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
#define lundump_c
|
||||
#define LUA_CORE
|
||||
|
||||
#include "lprefix.h"
|
||||
|
||||
|
||||
#include <limits.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
#include "ldebug.h"
|
||||
#include "ldo.h"
|
||||
#include "lauxlib.h"
|
||||
#include "lfunc.h"
|
||||
#include "lmem.h"
|
||||
#include "lobject.h"
|
||||
#include "lopcodes.h"
|
||||
#include "lstring.h"
|
||||
#include "ltable.h"
|
||||
#include "lundump.h"
|
||||
#include "lzio.h"
|
||||
|
||||
#define LoadBlock(b,size,Z) ezread(Z,b,size)
|
||||
|
||||
#if !defined(luai_verifycode)
|
||||
#define luai_verifycode(L,f) /* empty */
|
||||
#endif
|
||||
|
||||
|
||||
typedef struct {
|
||||
lua_State *L;
|
||||
ZIO *Z;
|
||||
const char *name;
|
||||
Table *h; /* list for string reuse */
|
||||
size_t offset; /* current position relative to beginning of dump */
|
||||
lua_Unsigned nstr; /* number of strings in the list */
|
||||
lu_byte fixed; /* dump is fixed in memory */
|
||||
} LoadState;
|
||||
|
||||
|
||||
static l_noret error (LoadState *S, const char *why) {
|
||||
luaO_pushfstring(S->L, "%s: bad binary format (%s)", S->name, why);
|
||||
luaD_throw(S->L, LUA_ERRSYNTAX);
|
||||
static void unexpectedEOZ (ZIO* Z)
|
||||
{
|
||||
luaL_verror("unexpected end of file in %s",zname(Z));
|
||||
}
|
||||
|
||||
static int ezgetc (ZIO* Z)
|
||||
{
|
||||
int c=zgetc(Z);
|
||||
if (c==EOZ) unexpectedEOZ(Z);
|
||||
return c;
|
||||
}
|
||||
|
||||
static void ezread (ZIO* Z, void* b, int n)
|
||||
{
|
||||
int r=zread(Z,b,n);
|
||||
if (r!=0) unexpectedEOZ(Z);
|
||||
}
|
||||
|
||||
static unsigned int LoadWord (ZIO* Z)
|
||||
{
|
||||
unsigned int hi=ezgetc(Z);
|
||||
unsigned int lo=ezgetc(Z);
|
||||
return (hi<<8)|lo;
|
||||
}
|
||||
|
||||
static unsigned long LoadLong (ZIO* Z)
|
||||
{
|
||||
unsigned long hi=LoadWord(Z);
|
||||
unsigned long lo=LoadWord(Z);
|
||||
return (hi<<16)|lo;
|
||||
}
|
||||
|
||||
/*
|
||||
** All high-level loads go through loadVector; you can change it to
|
||||
** adapt to the endianness of the input
|
||||
* convert number from text
|
||||
*/
|
||||
#define loadVector(S,b,n) loadBlock(S,b,cast_sizet(n)*sizeof((b)[0]))
|
||||
|
||||
static void loadBlock (LoadState *S, void *b, size_t size) {
|
||||
if (luaZ_read(S->Z, b, size) != 0)
|
||||
error(S, "truncated chunk");
|
||||
S->offset += size;
|
||||
double luaU_str2d (char* b, char* where)
|
||||
{
|
||||
int negative=(b[0]=='-');
|
||||
double x=luaO_str2d(b+negative);
|
||||
if (x<0) luaL_verror("cannot convert number '%s' in %s",b,where);
|
||||
return negative ? -x : x;
|
||||
}
|
||||
|
||||
static real LoadNumber (ZIO* Z, int native)
|
||||
{
|
||||
real x;
|
||||
if (native)
|
||||
{
|
||||
LoadBlock(&x,sizeof(x),Z);
|
||||
return x;
|
||||
}
|
||||
else
|
||||
{
|
||||
char b[256];
|
||||
int size=ezgetc(Z);
|
||||
LoadBlock(b,size,Z);
|
||||
b[size]=0;
|
||||
return luaU_str2d(b,zname(Z));
|
||||
}
|
||||
}
|
||||
|
||||
static void loadAlign (LoadState *S, unsigned align) {
|
||||
unsigned padding = align - cast_uint(S->offset % align);
|
||||
if (padding < align) { /* (padding == align) means no padding */
|
||||
lua_Integer paddingContent;
|
||||
loadBlock(S, &paddingContent, padding);
|
||||
lua_assert(S->offset % align == 0);
|
||||
static int LoadInt (ZIO* Z, char* message)
|
||||
{
|
||||
unsigned long l=LoadLong(Z);
|
||||
unsigned int i=l;
|
||||
if (i!=l) luaL_verror(message,l,zname(Z));
|
||||
return i;
|
||||
}
|
||||
|
||||
#define PAD 5 /* two word operands plus opcode */
|
||||
|
||||
static Byte* LoadCode (ZIO* Z)
|
||||
{
|
||||
int size=LoadInt(Z,"code too long (%ld bytes) in %s");
|
||||
Byte* b=luaM_malloc(size+PAD);
|
||||
LoadBlock(b,size,Z);
|
||||
if (b[size-1]!=ENDCODE) luaL_verror("bad code in %s",zname(Z));
|
||||
memset(b+size,ENDCODE,PAD); /* pad code for safety */
|
||||
return b;
|
||||
}
|
||||
|
||||
static TaggedString* LoadTString (ZIO* Z)
|
||||
{
|
||||
long size=LoadLong(Z);
|
||||
if (size==0)
|
||||
return NULL;
|
||||
else
|
||||
{
|
||||
char* s=luaL_openspace(size);
|
||||
LoadBlock(s,size,Z);
|
||||
return luaS_newlstr(s,size-1);
|
||||
}
|
||||
}
|
||||
|
||||
static void LoadLocals (TProtoFunc* tf, ZIO* Z)
|
||||
{
|
||||
int i,n=LoadInt(Z,"too many locals (%ld) in %s");
|
||||
if (n==0) return;
|
||||
tf->locvars=luaM_newvector(n+1,LocVar);
|
||||
for (i=0; i<n; i++)
|
||||
{
|
||||
tf->locvars[i].line=LoadInt(Z,"too many lines (%ld) in %s");
|
||||
tf->locvars[i].varname=LoadTString(Z);
|
||||
}
|
||||
tf->locvars[i].line=-1; /* flag end of vector */
|
||||
tf->locvars[i].varname=NULL;
|
||||
}
|
||||
|
||||
static TProtoFunc* LoadFunction (ZIO* Z, int native);
|
||||
|
||||
static void LoadConstants (TProtoFunc* tf, ZIO* Z, int native)
|
||||
{
|
||||
int i,n=LoadInt(Z,"too many constants (%ld) in %s");
|
||||
tf->nconsts=n;
|
||||
if (n==0) return;
|
||||
tf->consts=luaM_newvector(n,TObject);
|
||||
for (i=0; i<n; i++)
|
||||
{
|
||||
TObject* o=tf->consts+i;
|
||||
ttype(o)=-ezgetc(Z); /* ttype(o) is negative - ORDER LUA_T */
|
||||
switch (ttype(o))
|
||||
{
|
||||
case LUA_T_NUMBER:
|
||||
nvalue(o)=LoadNumber(Z,native);
|
||||
break;
|
||||
case LUA_T_STRING:
|
||||
tsvalue(o)=LoadTString(Z);
|
||||
break;
|
||||
case LUA_T_PROTO:
|
||||
tfvalue(o)=LoadFunction(Z,native);
|
||||
break;
|
||||
case LUA_T_NIL:
|
||||
break;
|
||||
default: /* cannot happen */
|
||||
luaU_badconstant("load",i,o,tf);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#define getaddr(S,n,t) cast(t *, getaddr_(S,cast_sizet(n) * sizeof(t)))
|
||||
|
||||
static const void *getaddr_ (LoadState *S, size_t size) {
|
||||
const void *block = luaZ_getaddr(S->Z, size);
|
||||
S->offset += size;
|
||||
if (block == NULL)
|
||||
error(S, "truncated fixed buffer");
|
||||
return block;
|
||||
static TProtoFunc* LoadFunction (ZIO* Z, int native)
|
||||
{
|
||||
TProtoFunc* tf=luaF_newproto();
|
||||
tf->lineDefined=LoadInt(Z,"lineDefined too large (%ld) in %s");
|
||||
tf->source=LoadTString(Z);
|
||||
if (tf->source==NULL) tf->source=luaS_new(zname(Z));
|
||||
tf->code=LoadCode(Z);
|
||||
LoadLocals(tf,Z);
|
||||
LoadConstants(tf,Z,native);
|
||||
return tf;
|
||||
}
|
||||
|
||||
|
||||
#define loadVar(S,x) loadVector(S,&x,1)
|
||||
|
||||
|
||||
static lu_byte loadByte (LoadState *S) {
|
||||
int b = zgetc(S->Z);
|
||||
if (b == EOZ)
|
||||
error(S, "truncated chunk");
|
||||
S->offset++;
|
||||
return cast_byte(b);
|
||||
static void LoadSignature (ZIO* Z)
|
||||
{
|
||||
char* s=SIGNATURE;
|
||||
while (*s!=0 && ezgetc(Z)==*s)
|
||||
++s;
|
||||
if (*s!=0) luaL_verror("bad signature in %s",zname(Z));
|
||||
}
|
||||
|
||||
|
||||
static lua_Unsigned loadVarint (LoadState *S, lua_Unsigned limit) {
|
||||
lua_Unsigned x = 0;
|
||||
int b;
|
||||
limit >>= 7;
|
||||
do {
|
||||
b = loadByte(S);
|
||||
if (x > limit)
|
||||
error(S, "integer overflow");
|
||||
x = (x << 7) | (b & 0x7f);
|
||||
} while ((b & 0x80) != 0);
|
||||
return x;
|
||||
}
|
||||
|
||||
|
||||
static size_t loadSize (LoadState *S) {
|
||||
return cast_sizet(loadVarint(S, MAX_SIZE));
|
||||
}
|
||||
|
||||
|
||||
static int loadInt (LoadState *S) {
|
||||
return cast_int(loadVarint(S, cast_sizet(INT_MAX)));
|
||||
}
|
||||
|
||||
|
||||
|
||||
static lua_Number loadNumber (LoadState *S) {
|
||||
lua_Number x;
|
||||
loadVar(S, x);
|
||||
return x;
|
||||
}
|
||||
|
||||
|
||||
static lua_Integer loadInteger (LoadState *S) {
|
||||
lua_Unsigned cx = loadVarint(S, LUA_MAXUNSIGNED);
|
||||
/* decode unsigned to signed */
|
||||
if ((cx & 1) != 0)
|
||||
return l_castU2S(~(cx >> 1));
|
||||
static int LoadHeader (ZIO* Z)
|
||||
{
|
||||
int version,sizeofR;
|
||||
int native;
|
||||
LoadSignature(Z);
|
||||
version=ezgetc(Z);
|
||||
if (version>VERSION)
|
||||
luaL_verror(
|
||||
"%s too new: version=0x%02x; expected at most 0x%02x",
|
||||
zname(Z),version,VERSION);
|
||||
if (version<VERSION0) /* check last major change */
|
||||
luaL_verror(
|
||||
"%s too old: version=0x%02x; expected at least 0x%02x",
|
||||
zname(Z),version,VERSION0);
|
||||
sizeofR=ezgetc(Z);
|
||||
native=(sizeofR!=0);
|
||||
if (native) /* test number representation */
|
||||
{
|
||||
if (sizeofR!=sizeof(real))
|
||||
luaL_verror("unknown number size in %s: read %d; expected %d",
|
||||
zname(Z),sizeofR,sizeof(real));
|
||||
else
|
||||
return l_castU2S(cx >> 1);
|
||||
{
|
||||
real tf=TEST_NUMBER;
|
||||
real f=LoadNumber(Z,native);
|
||||
if ((long)f!=(long)tf)
|
||||
luaL_verror("unknown number format in %s: "
|
||||
"read " NUMBER_FMT "; expected " NUMBER_FMT,
|
||||
zname(Z),f,tf);
|
||||
}
|
||||
}
|
||||
return native;
|
||||
}
|
||||
|
||||
static TProtoFunc* LoadChunk (ZIO* Z)
|
||||
{
|
||||
return LoadFunction(Z,LoadHeader(Z));
|
||||
}
|
||||
|
||||
/*
|
||||
** Load a nullable string into slot 'sl' from prototype 'p'. The
|
||||
** assignment to the slot and the barrier must be performed before any
|
||||
** possible GC activity, to anchor the string. (Both 'loadVector' and
|
||||
** 'luaH_setint' can call the GC.)
|
||||
** load one chunk from a file or buffer
|
||||
** return main if ok and NULL at EOF
|
||||
*/
|
||||
static void loadString (LoadState *S, Proto *p, TString **sl) {
|
||||
lua_State *L = S->L;
|
||||
TString *ts;
|
||||
TValue sv;
|
||||
size_t size = loadSize(S);
|
||||
if (size == 0) { /* previously saved string? */
|
||||
lua_Unsigned idx = loadVarint(S, LUA_MAXUNSIGNED); /* get its index */
|
||||
TValue stv;
|
||||
if (idx == 0) { /* no string? */
|
||||
lua_assert(*sl == NULL); /* must be prefilled */
|
||||
return;
|
||||
}
|
||||
if (novariant(luaH_getint(S->h, l_castU2S(idx), &stv)) != LUA_TSTRING)
|
||||
error(S, "invalid string index");
|
||||
*sl = ts = tsvalue(&stv); /* get its value */
|
||||
luaC_objbarrier(L, p, ts);
|
||||
return; /* do not save it again */
|
||||
}
|
||||
else if ((size -= 1) <= LUAI_MAXSHORTLEN) { /* short string? */
|
||||
char buff[LUAI_MAXSHORTLEN + 1]; /* extra space for '\0' */
|
||||
loadVector(S, buff, size + 1); /* load string into buffer */
|
||||
*sl = ts = luaS_newlstr(L, buff, size); /* create string */
|
||||
luaC_objbarrier(L, p, ts);
|
||||
}
|
||||
else if (S->fixed) { /* for a fixed buffer, use a fixed string */
|
||||
const char *s = getaddr(S, size + 1, char); /* get content address */
|
||||
*sl = ts = luaS_newextlstr(L, s, size, NULL, NULL);
|
||||
luaC_objbarrier(L, p, ts);
|
||||
}
|
||||
else { /* create internal copy */
|
||||
*sl = ts = luaS_createlngstrobj(L, size); /* create string */
|
||||
luaC_objbarrier(L, p, ts);
|
||||
loadVector(S, getlngstr(ts), size + 1); /* load directly in final place */
|
||||
}
|
||||
/* add string to list of saved strings */
|
||||
S->nstr++;
|
||||
setsvalue(L, &sv, ts);
|
||||
luaH_setint(L, S->h, l_castU2S(S->nstr), &sv);
|
||||
luaC_objbarrierback(L, obj2gco(S->h), ts);
|
||||
TProtoFunc* luaU_undump1 (ZIO* Z)
|
||||
{
|
||||
int c=zgetc(Z);
|
||||
if (c==ID_CHUNK)
|
||||
return LoadChunk(Z);
|
||||
else if (c!=EOZ)
|
||||
luaL_verror("%s is not a Lua binary file",zname(Z));
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
static void loadCode (LoadState *S, Proto *f) {
|
||||
int n = loadInt(S);
|
||||
loadAlign(S, sizeof(f->code[0]));
|
||||
if (S->fixed) {
|
||||
f->code = getaddr(S, n, Instruction);
|
||||
f->sizecode = n;
|
||||
}
|
||||
else {
|
||||
f->code = luaM_newvectorchecked(S->L, n, Instruction);
|
||||
f->sizecode = n;
|
||||
loadVector(S, f->code, n);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void loadFunction(LoadState *S, Proto *f);
|
||||
|
||||
|
||||
static void loadConstants (LoadState *S, Proto *f) {
|
||||
int i;
|
||||
int n = loadInt(S);
|
||||
f->k = luaM_newvectorchecked(S->L, n, TValue);
|
||||
f->sizek = n;
|
||||
for (i = 0; i < n; i++)
|
||||
setnilvalue(&f->k[i]);
|
||||
for (i = 0; i < n; i++) {
|
||||
TValue *o = &f->k[i];
|
||||
int t = loadByte(S);
|
||||
switch (t) {
|
||||
case LUA_VNIL:
|
||||
setnilvalue(o);
|
||||
break;
|
||||
case LUA_VFALSE:
|
||||
setbfvalue(o);
|
||||
break;
|
||||
case LUA_VTRUE:
|
||||
setbtvalue(o);
|
||||
break;
|
||||
case LUA_VNUMFLT:
|
||||
setfltvalue(o, loadNumber(S));
|
||||
break;
|
||||
case LUA_VNUMINT:
|
||||
setivalue(o, loadInteger(S));
|
||||
break;
|
||||
case LUA_VSHRSTR:
|
||||
case LUA_VLNGSTR: {
|
||||
lua_assert(f->source == NULL);
|
||||
loadString(S, f, &f->source); /* use 'source' to anchor string */
|
||||
if (f->source == NULL)
|
||||
error(S, "bad format for constant string");
|
||||
setsvalue2n(S->L, o, f->source); /* save it in the right place */
|
||||
f->source = NULL;
|
||||
break;
|
||||
}
|
||||
default: error(S, "invalid constant");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void loadProtos (LoadState *S, Proto *f) {
|
||||
int i;
|
||||
int n = loadInt(S);
|
||||
f->p = luaM_newvectorchecked(S->L, n, Proto *);
|
||||
f->sizep = n;
|
||||
for (i = 0; i < n; i++)
|
||||
f->p[i] = NULL;
|
||||
for (i = 0; i < n; i++) {
|
||||
f->p[i] = luaF_newproto(S->L);
|
||||
luaC_objbarrier(S->L, f, f->p[i]);
|
||||
loadFunction(S, f->p[i]);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Load the upvalues for a function. The names must be filled first,
|
||||
** because the filling of the other fields can raise read errors and
|
||||
** the creation of the error message can call an emergency collection;
|
||||
** in that case all prototypes must be consistent for the GC.
|
||||
* handle constants that cannot happen
|
||||
*/
|
||||
static void loadUpvalues (LoadState *S, Proto *f) {
|
||||
int i;
|
||||
int n = loadInt(S);
|
||||
f->upvalues = luaM_newvectorchecked(S->L, n, Upvaldesc);
|
||||
f->sizeupvalues = n;
|
||||
for (i = 0; i < n; i++) /* make array valid for GC */
|
||||
f->upvalues[i].name = NULL;
|
||||
for (i = 0; i < n; i++) { /* following calls can raise errors */
|
||||
f->upvalues[i].instack = loadByte(S);
|
||||
f->upvalues[i].idx = loadByte(S);
|
||||
f->upvalues[i].kind = loadByte(S);
|
||||
}
|
||||
void luaU_badconstant (char* s, int i, TObject* o, TProtoFunc* tf)
|
||||
{
|
||||
int t=ttype(o);
|
||||
char* name= (t>0 || t<LUA_T_LINE) ? "?" : luaO_typenames[-t];
|
||||
luaL_verror("cannot %s constant #%d: type=%d [%s]" IN,s,i,t,name,INLOC);
|
||||
}
|
||||
|
||||
|
||||
static void loadDebug (LoadState *S, Proto *f) {
|
||||
int i;
|
||||
int n = loadInt(S);
|
||||
if (S->fixed) {
|
||||
f->lineinfo = getaddr(S, n, ls_byte);
|
||||
f->sizelineinfo = n;
|
||||
}
|
||||
else {
|
||||
f->lineinfo = luaM_newvectorchecked(S->L, n, ls_byte);
|
||||
f->sizelineinfo = n;
|
||||
loadVector(S, f->lineinfo, n);
|
||||
}
|
||||
n = loadInt(S);
|
||||
if (n > 0) {
|
||||
loadAlign(S, sizeof(int));
|
||||
if (S->fixed) {
|
||||
f->abslineinfo = getaddr(S, n, AbsLineInfo);
|
||||
f->sizeabslineinfo = n;
|
||||
}
|
||||
else {
|
||||
f->abslineinfo = luaM_newvectorchecked(S->L, n, AbsLineInfo);
|
||||
f->sizeabslineinfo = n;
|
||||
loadVector(S, f->abslineinfo, n);
|
||||
}
|
||||
}
|
||||
n = loadInt(S);
|
||||
f->locvars = luaM_newvectorchecked(S->L, n, LocVar);
|
||||
f->sizelocvars = n;
|
||||
for (i = 0; i < n; i++)
|
||||
f->locvars[i].varname = NULL;
|
||||
for (i = 0; i < n; i++) {
|
||||
loadString(S, f, &f->locvars[i].varname);
|
||||
f->locvars[i].startpc = loadInt(S);
|
||||
f->locvars[i].endpc = loadInt(S);
|
||||
}
|
||||
n = loadInt(S);
|
||||
if (n != 0) /* does it have debug information? */
|
||||
n = f->sizeupvalues; /* must be this many */
|
||||
for (i = 0; i < n; i++)
|
||||
loadString(S, f, &f->upvalues[i].name);
|
||||
}
|
||||
|
||||
|
||||
static void loadFunction (LoadState *S, Proto *f) {
|
||||
f->linedefined = loadInt(S);
|
||||
f->lastlinedefined = loadInt(S);
|
||||
f->numparams = loadByte(S);
|
||||
/* get only the meaningful flags */
|
||||
f->flag = cast_byte(loadByte(S) & ~PF_FIXED);
|
||||
if (S->fixed)
|
||||
f->flag |= PF_FIXED; /* signal that code is fixed */
|
||||
f->maxstacksize = loadByte(S);
|
||||
loadCode(S, f);
|
||||
loadConstants(S, f);
|
||||
loadUpvalues(S, f);
|
||||
loadProtos(S, f);
|
||||
loadString(S, f, &f->source);
|
||||
loadDebug(S, f);
|
||||
}
|
||||
|
||||
|
||||
static void checkliteral (LoadState *S, const char *s, const char *msg) {
|
||||
char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
|
||||
size_t len = strlen(s);
|
||||
loadVector(S, buff, len);
|
||||
if (memcmp(s, buff, len) != 0)
|
||||
error(S, msg);
|
||||
}
|
||||
|
||||
|
||||
static l_noret numerror (LoadState *S, const char *what, const char *tname) {
|
||||
const char *msg = luaO_pushfstring(S->L, "%s %s mismatch", tname, what);
|
||||
error(S, msg);
|
||||
}
|
||||
|
||||
|
||||
static void checknumsize (LoadState *S, int size, const char *tname) {
|
||||
if (size != loadByte(S))
|
||||
numerror(S, "size", tname);
|
||||
}
|
||||
|
||||
|
||||
static void checknumformat (LoadState *S, int eq, const char *tname) {
|
||||
if (!eq)
|
||||
numerror(S, "format", tname);
|
||||
}
|
||||
|
||||
|
||||
#define checknum(S,tvar,value,tname) \
|
||||
{ tvar i; checknumsize(S, sizeof(i), tname); \
|
||||
loadVar(S, i); \
|
||||
checknumformat(S, i == value, tname); }
|
||||
|
||||
|
||||
static void checkHeader (LoadState *S) {
|
||||
/* skip 1st char (already read and checked) */
|
||||
checkliteral(S, &LUA_SIGNATURE[1], "not a binary chunk");
|
||||
if (loadByte(S) != LUAC_VERSION)
|
||||
error(S, "version mismatch");
|
||||
if (loadByte(S) != LUAC_FORMAT)
|
||||
error(S, "format mismatch");
|
||||
checkliteral(S, LUAC_DATA, "corrupted chunk");
|
||||
checknum(S, int, LUAC_INT, "int");
|
||||
checknum(S, Instruction, LUAC_INST, "instruction");
|
||||
checknum(S, lua_Integer, LUAC_INT, "Lua integer");
|
||||
checknum(S, lua_Number, LUAC_NUM, "Lua number");
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
** Load precompiled chunk.
|
||||
*/
|
||||
LClosure *luaU_undump (lua_State *L, ZIO *Z, Table *anchor, const char *name,
|
||||
int fixed) {
|
||||
LoadState S;
|
||||
LClosure *cl;
|
||||
if (*name == '@' || *name == '=')
|
||||
name = name + 1;
|
||||
else if (*name == LUA_SIGNATURE[0])
|
||||
name = "binary string";
|
||||
S.name = name;
|
||||
S.L = L;
|
||||
S.Z = Z;
|
||||
S.fixed = cast_byte(fixed);
|
||||
S.offset = 1; /* fist byte was already read */
|
||||
checkHeader(&S);
|
||||
S.h = anchor;
|
||||
S.nstr = 0;
|
||||
cl = luaF_newLclosure(L, loadByte(&S));
|
||||
luaD_anchorobj(L, anchor, obj2gco(cl));
|
||||
cl->p = luaF_newproto(L);
|
||||
luaC_objbarrier(L, cl, cl->p);
|
||||
loadFunction(&S, cl->p);
|
||||
if (cl->nupvalues != cl->p->sizeupvalues)
|
||||
error(&S, "corrupted chunk");
|
||||
luai_verifycode(L, cl->p);
|
||||
return cl;
|
||||
}
|
||||
|
||||
|
||||
Reference in New Issue
Block a user