mirror of
https://github.com/lua/lua
synced 2024-12-05 02:41:56 +03:00
7a40cdbda0
(makes code clearer)
170 lines
3.2 KiB
C
170 lines
3.2 KiB
C
/*
|
|
** $Id: ldump.c,v 1.3 2003/01/27 15:52:57 roberto Exp roberto $
|
|
** save bytecodes
|
|
** See Copyright Notice in lua.h
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
|
|
#define ldump_c
|
|
|
|
#include "lua.h"
|
|
|
|
#include "lobject.h"
|
|
#include "lopcodes.h"
|
|
#include "lstate.h"
|
|
#include "lundump.h"
|
|
|
|
#define DumpVector(b,n,size,D) DumpBlock(b,(n)*(size),D)
|
|
#define DumpLiteral(s,D) DumpBlock("" s,(sizeof(s))-1,D)
|
|
|
|
typedef struct {
|
|
lua_State* L;
|
|
lua_Chunkwriter write;
|
|
void* data;
|
|
} DumpState;
|
|
|
|
static void DumpBlock(const void* b, size_t size, DumpState* D)
|
|
{
|
|
lua_unlock(D->L);
|
|
(*D->write)(D->L,b,size,D->data);
|
|
lua_lock(D->L);
|
|
}
|
|
|
|
static void DumpByte(int y, DumpState* D)
|
|
{
|
|
char x=(char)y;
|
|
DumpBlock(&x,sizeof(x),D);
|
|
}
|
|
|
|
static void DumpInt(int x, DumpState* D)
|
|
{
|
|
DumpBlock(&x,sizeof(x),D);
|
|
}
|
|
|
|
static void DumpSize(size_t x, DumpState* D)
|
|
{
|
|
DumpBlock(&x,sizeof(x),D);
|
|
}
|
|
|
|
static void DumpNumber(lua_Number x, DumpState* D)
|
|
{
|
|
DumpBlock(&x,sizeof(x),D);
|
|
}
|
|
|
|
static void DumpString(TString* s, DumpState* D)
|
|
{
|
|
if (s==NULL || getstr(s)==NULL)
|
|
DumpSize(0,D);
|
|
else
|
|
{
|
|
size_t size=s->tsv.len+1; /* include trailing '\0' */
|
|
DumpSize(size,D);
|
|
DumpBlock(getstr(s),size,D);
|
|
}
|
|
}
|
|
|
|
static void DumpCode(const Proto* f, DumpState* D)
|
|
{
|
|
DumpInt(f->sizecode,D);
|
|
DumpVector(f->code,f->sizecode,sizeof(*f->code),D);
|
|
}
|
|
|
|
static void DumpLocals(const Proto* f, DumpState* D)
|
|
{
|
|
int i,n=f->sizelocvars;
|
|
DumpInt(n,D);
|
|
for (i=0; i<n; i++)
|
|
{
|
|
DumpString(f->locvars[i].varname,D);
|
|
DumpInt(f->locvars[i].startpc,D);
|
|
DumpInt(f->locvars[i].endpc,D);
|
|
}
|
|
}
|
|
|
|
static void DumpLines(const Proto* f, DumpState* D)
|
|
{
|
|
DumpInt(f->sizelineinfo,D);
|
|
DumpVector(f->lineinfo,f->sizelineinfo,sizeof(*f->lineinfo),D);
|
|
}
|
|
|
|
static void DumpUpvalues(const Proto* f, DumpState* D)
|
|
{
|
|
int i,n=f->sizeupvalues;
|
|
DumpInt(n,D);
|
|
for (i=0; i<n; i++) DumpString(f->upvalues[i],D);
|
|
}
|
|
|
|
static void DumpFunction(const Proto* f, const TString* p, DumpState* D);
|
|
|
|
static void DumpConstants(const Proto* f, DumpState* D)
|
|
{
|
|
int i,n;
|
|
DumpInt(n=f->sizek,D);
|
|
for (i=0; i<n; i++)
|
|
{
|
|
const TObject* o=&f->k[i];
|
|
DumpByte(ttype(o),D);
|
|
switch (ttype(o))
|
|
{
|
|
case LUA_TNUMBER:
|
|
DumpNumber(nvalue(o),D);
|
|
break;
|
|
case LUA_TSTRING:
|
|
DumpString(tsvalue(o),D);
|
|
break;
|
|
case LUA_TNIL:
|
|
break;
|
|
default:
|
|
lua_assert(0); /* cannot happen */
|
|
break;
|
|
}
|
|
}
|
|
DumpInt(n=f->sizep,D);
|
|
for (i=0; i<n; i++) DumpFunction(f->p[i],f->source,D);
|
|
}
|
|
|
|
static void DumpFunction(const Proto* f, const TString* p, DumpState* D)
|
|
{
|
|
DumpString((f->source==p) ? NULL : f->source,D);
|
|
DumpInt(f->lineDefined,D);
|
|
DumpByte(f->nups,D);
|
|
DumpByte(f->numparams,D);
|
|
DumpByte(f->is_vararg,D);
|
|
DumpByte(f->maxstacksize,D);
|
|
DumpLines(f,D);
|
|
DumpLocals(f,D);
|
|
DumpUpvalues(f,D);
|
|
DumpConstants(f,D);
|
|
DumpCode(f,D);
|
|
}
|
|
|
|
static void DumpHeader(DumpState* D)
|
|
{
|
|
DumpLiteral(LUA_SIGNATURE,D);
|
|
DumpByte(VERSION,D);
|
|
DumpByte(luaU_endianness(),D);
|
|
DumpByte(sizeof(int),D);
|
|
DumpByte(sizeof(size_t),D);
|
|
DumpByte(sizeof(Instruction),D);
|
|
DumpByte(SIZE_OP,D);
|
|
DumpByte(SIZE_A,D);
|
|
DumpByte(SIZE_B,D);
|
|
DumpByte(SIZE_C,D);
|
|
DumpByte(sizeof(lua_Number),D);
|
|
DumpNumber(TEST_NUMBER,D);
|
|
}
|
|
|
|
/*
|
|
** dump function as precompiled chunk
|
|
*/
|
|
void luaU_dump (lua_State* L, const Proto* Main, lua_Chunkwriter w, void* data)
|
|
{
|
|
DumpState D;
|
|
D.L=L;
|
|
D.write=w;
|
|
D.data=data;
|
|
DumpHeader(&D);
|
|
DumpFunction(Main,NULL,&D);
|
|
}
|