diff options
Diffstat (limited to '3rdparty/lua/src/lundump.c')
| -rw-r--r-- | 3rdparty/lua/src/lundump.c | 279 |
1 files changed, 0 insertions, 279 deletions
diff --git a/3rdparty/lua/src/lundump.c b/3rdparty/lua/src/lundump.c deleted file mode 100644 index 4080af9..0000000 --- a/3rdparty/lua/src/lundump.c +++ /dev/null @@ -1,279 +0,0 @@ -/* -** $Id: lundump.c,v 2.44 2015/11/02 16:09:30 roberto Exp $ -** load precompiled Lua chunks -** See Copyright Notice in lua.h -*/ - -#define lundump_c -#define LUA_CORE - -#include "lprefix.h" - - -#include <string.h> - -#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" - - -#if !defined(luai_verifycode) -#define luai_verifycode(L,b,f) /* empty */ -#endif - - -typedef struct { - lua_State *L; - ZIO *Z; - const char *name; -} LoadState; - - -static l_noret error(LoadState *S, const char *why) { - luaO_pushfstring(S->L, "%s: %s precompiled chunk", S->name, why); - luaD_throw(S->L, LUA_ERRSYNTAX); -} - - -/* -** All high-level loads go through LoadVector; you can change it to -** adapt to the endianness of the input -*/ -#define LoadVector(S,b,n) LoadBlock(S,b,(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"); -} - - -#define LoadVar(S,x) LoadVector(S,&x,1) - - -static lu_byte LoadByte (LoadState *S) { - lu_byte x; - LoadVar(S, x); - return x; -} - - -static int LoadInt (LoadState *S) { - int x; - LoadVar(S, x); - return x; -} - - -static lua_Number LoadNumber (LoadState *S) { - lua_Number x; - LoadVar(S, x); - return x; -} - - -static lua_Integer LoadInteger (LoadState *S) { - lua_Integer x; - LoadVar(S, x); - return x; -} - - -static TString *LoadString (LoadState *S) { - size_t size = LoadByte(S); - if (size == 0xFF) - LoadVar(S, size); - if (size == 0) - return NULL; - else if (--size <= LUAI_MAXSHORTLEN) { /* short string? */ - char buff[LUAI_MAXSHORTLEN]; - LoadVector(S, buff, size); - return luaS_newlstr(S->L, buff, size); - } - else { /* long string */ - TString *ts = luaS_createlngstrobj(S->L, size); - LoadVector(S, getstr(ts), size); /* load directly in final place */ - return ts; - } -} - - -static void LoadCode (LoadState *S, Proto *f) { - int n = LoadInt(S); - f->code = luaM_newvector(S->L, n, Instruction); - f->sizecode = n; - LoadVector(S, f->code, n); -} - - -static void LoadFunction(LoadState *S, Proto *f, TString *psource); - - -static void LoadConstants (LoadState *S, Proto *f) { - int i; - int n = LoadInt(S); - f->k = luaM_newvector(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_TNIL: - setnilvalue(o); - break; - case LUA_TBOOLEAN: - setbvalue(o, LoadByte(S)); - break; - case LUA_TNUMFLT: - setfltvalue(o, LoadNumber(S)); - break; - case LUA_TNUMINT: - setivalue(o, LoadInteger(S)); - break; - case LUA_TSHRSTR: - case LUA_TLNGSTR: - setsvalue2n(S->L, o, LoadString(S)); - break; - default: - lua_assert(0); - } - } -} - - -static void LoadProtos (LoadState *S, Proto *f) { - int i; - int n = LoadInt(S); - f->p = luaM_newvector(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); - LoadFunction(S, f->p[i], f->source); - } -} - - -static void LoadUpvalues (LoadState *S, Proto *f) { - int i, n; - n = LoadInt(S); - f->upvalues = luaM_newvector(S->L, n, Upvaldesc); - f->sizeupvalues = n; - for (i = 0; i < n; i++) - f->upvalues[i].name = NULL; - for (i = 0; i < n; i++) { - f->upvalues[i].instack = LoadByte(S); - f->upvalues[i].idx = LoadByte(S); - } -} - - -static void LoadDebug (LoadState *S, Proto *f) { - int i, n; - n = LoadInt(S); - f->lineinfo = luaM_newvector(S->L, n, int); - f->sizelineinfo = n; - LoadVector(S, f->lineinfo, n); - n = LoadInt(S); - f->locvars = luaM_newvector(S->L, n, LocVar); - f->sizelocvars = n; - for (i = 0; i < n; i++) - f->locvars[i].varname = NULL; - for (i = 0; i < n; i++) { - f->locvars[i].varname = LoadString(S); - f->locvars[i].startpc = LoadInt(S); - f->locvars[i].endpc = LoadInt(S); - } - n = LoadInt(S); - for (i = 0; i < n; i++) - f->upvalues[i].name = LoadString(S); -} - - -static void LoadFunction (LoadState *S, Proto *f, TString *psource) { - f->source = LoadString(S); - if (f->source == NULL) /* no source in dump? */ - f->source = psource; /* reuse parent's source */ - f->linedefined = LoadInt(S); - f->lastlinedefined = LoadInt(S); - f->numparams = LoadByte(S); - f->is_vararg = LoadByte(S); - f->maxstacksize = LoadByte(S); - LoadCode(S, f); - LoadConstants(S, f); - LoadUpvalues(S, f); - LoadProtos(S, f); - 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 void fchecksize (LoadState *S, size_t size, const char *tname) { - if (LoadByte(S) != size) - error(S, luaO_pushfstring(S->L, "%s size mismatch in", tname)); -} - - -#define checksize(S,t) fchecksize(S,sizeof(t),#t) - -static void checkHeader (LoadState *S) { - checkliteral(S, LUA_SIGNATURE + 1, "not a"); /* 1st char already checked */ - if (LoadByte(S) != LUAC_VERSION) - error(S, "version mismatch in"); - if (LoadByte(S) != LUAC_FORMAT) - error(S, "format mismatch in"); - checkliteral(S, LUAC_DATA, "corrupted"); - checksize(S, int); - checksize(S, size_t); - checksize(S, Instruction); - checksize(S, lua_Integer); - checksize(S, lua_Number); - if (LoadInteger(S) != LUAC_INT) - error(S, "endianness mismatch in"); - if (LoadNumber(S) != LUAC_NUM) - error(S, "float format mismatch in"); -} - - -/* -** load precompiled chunk -*/ -LClosure *luaU_undump(lua_State *L, ZIO *Z, const char *name) { - LoadState S; - LClosure *cl; - if (*name == '@' || *name == '=') - S.name = name + 1; - else if (*name == LUA_SIGNATURE[0]) - S.name = "binary string"; - else - S.name = name; - S.L = L; - S.Z = Z; - checkHeader(&S); - cl = luaF_newLclosure(L, LoadByte(&S)); - setclLvalue(L, L->top, cl); - luaD_inctop(L); - cl->p = luaF_newproto(L); - LoadFunction(&S, cl->p, NULL); - lua_assert(cl->nupvalues == cl->p->sizeupvalues); - luai_verifycode(L, buff, cl->p); - return cl; -} - |