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/*
** $Id: lundump.c,v 2.7.1.4 2008/04/04 19:51:41 roberto Exp $
** load precompiled Lua chunks
** See Copyright Notice in lua.h
*/
#include <string.h>
#define lundump_c
#define LUA_CORE
#include "lua.h"
#include "ldebug.h"
#include "ldo.h"
#include "lfunc.h"
#include "lmem.h"
#include "lobject.h"
#include "lstring.h"
#include "lundump.h"
#include "lzio.h"
typedef struct {
lua_State* L;
ZIO* Z;
Mbuffer* b;
const char* name;
} LoadState;
#ifdef LUAC_TRUST_BINARIES
#define IF(c,s)
#define error(S,s)
#else
#define IF(c,s) if (c) error(S,s)
static void error(LoadState* S, const char* why)
{
luaO_pushfstring(S->L,"%s: %s in precompiled chunk",S->name,why);
luaD_throw(S->L,LUA_ERRSYNTAX);
}
#endif
#define LoadMem(S,b,n,size) LoadBlock(S,b,(n)*(size))
#define LoadByte(S) (lu_byte)LoadChar(S)
#define LoadVar(S,x) LoadMem(S,&x,1,sizeof(x))
#define LoadVector(S,b,n,size) LoadMem(S,b,n,size)
static void LoadBlock(LoadState* S, void* b, size_t size)
{
size_t r=luaZ_read(S->Z,b,size);
IF (r!=0, "unexpected end");
}
static int LoadChar(LoadState* S)
{
char x;
LoadVar(S,x);
return x;
}
static int LoadInt(LoadState* S)
{
int x;
LoadVar(S,x);
IF (x<0, "bad integer");
return x;
}
static lua_Number LoadNumber(LoadState* S)
{
lua_Number x;