/* ** $Id: ldump.c,v 2.8.1.1 2007/12/27 13:02:25 roberto 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; }