/*** $Id: ldump.c,v 1.15 2006/02/16 15:53:49 lhf Exp $** save precompiled Lua chunks** See Copyright Notice in lua.h*/#include <stddef.h>#define ldump_c#define LUA_CORE#include "lua.h"#include "lobject.h"#include "lstate.h"#include "lundump.h"typedef struct { lua_State* L; lua_Writer writer; void* data; int strip; int status;} DumpState;#define DumpMem(b,n,size,D)	DumpBlock(b,(n)*(size),D)#define DumpVar(x,D)	 	DumpMem(&x,1,sizeof(x),D)static void DumpBlock(const void* b, size_t size, DumpState* D){ if (D->status==0) {  lua_unlock(D->L);  D->status=(*D->writer)(D->L,b,size,D->data);  lua_lock(D->L); }}static void DumpChar(int y, DumpState* D){ char x=(char)y; DumpVar(x,D);}static void DumpInt(int x, DumpState* D){ DumpVar(x,D);}static void DumpNumber(lua_Number x, DumpState* D){ DumpVar(x,D);}static void DumpVector(const void* b, int n, size_t size, DumpState* D){ DumpInt(n,D); DumpMem(b,n,size,D);}static void DumpString(const TString* s, DumpState* D){ if (s==NULL || getstr(s)==NULL) {  size_t size=0;  DumpVar(size,D); } else {  size_t size=s->tsv.len+1;		/* include trailing '\0' */  DumpVar(size,D);  DumpBlock(getstr(s),size,D); }}#define DumpCode(f,D)	 DumpVector(f->code,f->sizecode,sizeof(Instruction),D)static void DumpFunction(const Proto* f, const TString* p, DumpState* D);static void DumpConstants(const Proto* f, DumpState* D){ int i,n=f->sizek; DumpInt(n,D); for (i=0; i<n; i++) {  const TValue* o=&f->k[i];  DumpChar(ttype(o),D);  switch (ttype(o))  {   case LUA_TNIL:	break;   case LUA_TBOOLEAN:	DumpChar(bvalue(o),D);	break;   case LUA_TNUMBER:	DumpNumber(nvalue(o),D);	break;   case LUA_TSTRING:	DumpString(rawtsvalue(o),D);	break;   default:	lua_assert(0);			/* cannot happen */	break;  } } n=f->sizep; DumpInt(n,D); for (i=0; i<n; i++) DumpFunction(f->p[i],f->source,D);}static void DumpDebug(const Proto* f, DumpState* D){ int i,n; n= (D->strip) ? 0 : f->sizelineinfo; DumpVector(f->lineinfo,n,sizeof(int),D); n= (D->strip) ? 0 : 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); } n= (D->strip) ? 0 : 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){ DumpString((f->source==p || D->strip) ? NULL : f->source,D); DumpInt(f->linedefined,D); DumpInt(f->lastlinedefined,D); DumpChar(f->nups,D); DumpChar(f->numparams,D); DumpChar(f->is_vararg,D); DumpChar(f->maxstacksize,D); DumpCode(f,D); DumpConstants(f,D); DumpDebug(f,D);}static void DumpHeader(DumpState* D){ char h[LUAC_HEADERSIZE]; luaU_header(h); DumpBlock(h,LUAC_HEADERSIZE,D);}/*** dump Lua function as precompiled chunk*/int luaU_dump (lua_State* L, const Proto* f, lua_Writer w, void* data, int strip){ DumpState D; D.L=L; D.writer=w; D.data=data; D.strip=strip; D.status=0; DumpHeader(&D); DumpFunction(f,NULL,&D); return D.status;}