725 lines
15 KiB
C
725 lines
15 KiB
C
/*
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** $Id: luac.c $
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** Lua compiler (saves bytecodes to files; also lists bytecodes)
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** See Copyright Notice in lua.h
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*/
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#define luac_c
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#define LUA_CORE
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#include "lprefix.h"
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "lua.h"
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#include "lauxlib.h"
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#include "ldebug.h"
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#include "lobject.h"
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#include "lopcodes.h"
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#include "lopnames.h"
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#include "lstate.h"
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#include "lundump.h"
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static void PrintFunction(const Proto* f, int full);
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#define luaU_print PrintFunction
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#define PROGNAME "luac" /* default program name */
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#define OUTPUT PROGNAME ".out" /* default output file */
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static int listing=0; /* list bytecodes? */
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static int dumping=1; /* dump bytecodes? */
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static int stripping=0; /* strip debug information? */
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static char Output[]={ OUTPUT }; /* default output file name */
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static const char* output=Output; /* actual output file name */
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static const char* progname=PROGNAME; /* actual program name */
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static TString **tmname;
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static void fatal(const char* message)
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{
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fprintf(stderr,"%s: %s\n",progname,message);
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exit(EXIT_FAILURE);
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}
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static void cannot(const char* what)
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{
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fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));
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exit(EXIT_FAILURE);
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}
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static void usage(const char* message)
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{
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if (*message=='-')
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fprintf(stderr,"%s: unrecognized option '%s'\n",progname,message);
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else
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fprintf(stderr,"%s: %s\n",progname,message);
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fprintf(stderr,
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"usage: %s [options] [filenames]\n"
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"Available options are:\n"
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" -l list (use -l -l for full listing)\n"
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" -o name output to file 'name' (default is \"%s\")\n"
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" -p parse only\n"
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" -s strip debug information\n"
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" -v show version information\n"
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" -- stop handling options\n"
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" - stop handling options and process stdin\n"
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,progname,Output);
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exit(EXIT_FAILURE);
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}
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#define IS(s) (strcmp(argv[i],s)==0)
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static int doargs(int argc, char* argv[])
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{
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int i;
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int version=0;
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if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
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for (i=1; i<argc; i++)
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{
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if (*argv[i]!='-') /* end of options; keep it */
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break;
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else if (IS("--")) /* end of options; skip it */
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{
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++i;
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if (version) ++version;
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break;
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}
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else if (IS("-")) /* end of options; use stdin */
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break;
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else if (IS("-l")) /* list */
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++listing;
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else if (IS("-o")) /* output file */
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{
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output=argv[++i];
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if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))
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usage("'-o' needs argument");
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if (IS("-")) output=NULL;
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}
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else if (IS("-p")) /* parse only */
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dumping=0;
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else if (IS("-s")) /* strip debug information */
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stripping=1;
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else if (IS("-v")) /* show version */
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++version;
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else /* unknown option */
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usage(argv[i]);
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}
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if (i==argc && (listing || !dumping))
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{
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dumping=0;
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argv[--i]=Output;
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}
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if (version)
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{
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printf("%s\n",LUA_COPYRIGHT);
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if (version==argc-1) exit(EXIT_SUCCESS);
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}
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return i;
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}
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#define FUNCTION "(function()end)();"
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static const char* reader(lua_State* L, void* ud, size_t* size)
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{
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UNUSED(L);
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if ((*(int*)ud)--)
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{
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*size=sizeof(FUNCTION)-1;
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return FUNCTION;
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}
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else
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{
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*size=0;
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return NULL;
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}
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}
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#define toproto(L,i) getproto(s2v(L->top+(i)))
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static const Proto* combine(lua_State* L, int n)
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{
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if (n==1)
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return toproto(L,-1);
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else
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{
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Proto* f;
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int i=n;
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if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));
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f=toproto(L,-1);
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for (i=0; i<n; i++)
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{
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f->p[i]=toproto(L,i-n-1);
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if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;
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}
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f->sizelineinfo=0;
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return f;
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}
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}
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static int writer(lua_State* L, const void* p, size_t size, void* u)
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{
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UNUSED(L);
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return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);
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}
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static int pmain(lua_State* L)
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{
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int argc=(int)lua_tointeger(L,1);
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char** argv=(char**)lua_touserdata(L,2);
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const Proto* f;
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int i;
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tmname=G(L)->tmname;
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if (!lua_checkstack(L,argc)) fatal("too many input files");
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for (i=0; i<argc; i++)
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{
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const char* filename=IS("-") ? NULL : argv[i];
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if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));
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}
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f=combine(L,argc);
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if (listing) luaU_print(f,listing>1);
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if (dumping)
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{
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FILE* D= (output==NULL) ? stdout : fopen(output,"wb");
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if (D==NULL) cannot("open");
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lua_lock(L);
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luaU_dump(L,f,writer,D,stripping);
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lua_unlock(L);
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if (ferror(D)) cannot("write");
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if (fclose(D)) cannot("close");
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}
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return 0;
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}
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int main(int argc, char* argv[])
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{
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lua_State* L;
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int i=doargs(argc,argv);
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argc-=i; argv+=i;
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if (argc<=0) usage("no input files given");
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L=luaL_newstate();
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if (L==NULL) fatal("cannot create state: not enough memory");
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lua_pushcfunction(L,&pmain);
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lua_pushinteger(L,argc);
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lua_pushlightuserdata(L,argv);
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if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));
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lua_close(L);
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return EXIT_SUCCESS;
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}
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/*
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** print bytecodes
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*/
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#define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
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#define VOID(p) ((const void*)(p))
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#define eventname(i) (getstr(tmname[i]))
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static void PrintString(const TString* ts)
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{
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const char* s=getstr(ts);
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size_t i,n=tsslen(ts);
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printf("\"");
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for (i=0; i<n; i++)
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{
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int c=(int)(unsigned char)s[i];
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switch (c)
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{
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case '"':
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printf("\\\"");
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break;
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case '\\':
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printf("\\\\");
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break;
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case '\a':
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printf("\\a");
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break;
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case '\b':
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printf("\\b");
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break;
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case '\f':
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printf("\\f");
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break;
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case '\n':
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printf("\\n");
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break;
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case '\r':
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printf("\\r");
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break;
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case '\t':
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printf("\\t");
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break;
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case '\v':
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printf("\\v");
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break;
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default:
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if (isprint(c)) printf("%c",c); else printf("\\%03d",c);
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break;
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}
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}
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printf("\"");
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}
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static void PrintType(const Proto* f, int i)
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{
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const TValue* o=&f->k[i];
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switch (ttypetag(o))
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{
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case LUA_VNIL:
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printf("N");
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break;
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case LUA_VFALSE:
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case LUA_VTRUE:
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printf("B");
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break;
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case LUA_VNUMFLT:
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printf("F");
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break;
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case LUA_VNUMINT:
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printf("I");
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break;
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case LUA_VSHRSTR:
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case LUA_VLNGSTR:
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printf("S");
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break;
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default: /* cannot happen */
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printf("?%d",ttypetag(o));
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break;
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}
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printf("\t");
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}
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static void PrintConstant(const Proto* f, int i)
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{
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const TValue* o=&f->k[i];
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switch (ttypetag(o))
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{
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case LUA_VNIL:
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printf("nil");
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break;
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case LUA_VFALSE:
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printf("false");
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break;
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case LUA_VTRUE:
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printf("true");
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break;
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case LUA_VNUMFLT:
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{
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char buff[100];
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sprintf(buff,LUA_NUMBER_FMT,fltvalue(o));
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printf("%s",buff);
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if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0");
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break;
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}
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case LUA_VNUMINT:
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printf(LUA_INTEGER_FMT,ivalue(o));
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break;
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case LUA_VSHRSTR:
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case LUA_VLNGSTR:
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PrintString(tsvalue(o));
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break;
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default: /* cannot happen */
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printf("?%d",ttypetag(o));
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break;
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}
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}
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#define COMMENT "\t; "
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#define EXTRAARG GETARG_Ax(code[pc+1])
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#define EXTRAARGC (EXTRAARG*(MAXARG_C+1))
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#define ISK (isk ? "k" : "")
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static void PrintCode(const Proto* f)
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{
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const Instruction* code=f->code;
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int pc,n=f->sizecode;
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for (pc=0; pc<n; pc++)
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{
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Instruction i=code[pc];
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OpCode o=GET_OPCODE(i);
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int a=GETARG_A(i);
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int b=GETARG_B(i);
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int c=GETARG_C(i);
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int ax=GETARG_Ax(i);
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int bx=GETARG_Bx(i);
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int sb=GETARG_sB(i);
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int sc=GETARG_sC(i);
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int sbx=GETARG_sBx(i);
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int isk=GETARG_k(i);
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int line=luaG_getfuncline(f,pc);
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printf("\t%d\t",pc+1);
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if (line>0) printf("[%d]\t",line); else printf("[-]\t");
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printf("%-9s\t",opnames[o]);
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switch (o)
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{
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case OP_MOVE:
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printf("%d %d",a,b);
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break;
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case OP_LOADI:
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printf("%d %d",a,sbx);
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break;
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case OP_LOADF:
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printf("%d %d",a,sbx);
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break;
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case OP_LOADK:
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printf("%d %d",a,bx);
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printf(COMMENT); PrintConstant(f,bx);
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break;
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case OP_LOADKX:
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printf("%d",a);
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printf(COMMENT); PrintConstant(f,EXTRAARG);
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break;
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case OP_LOADFALSE:
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printf("%d",a);
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break;
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case OP_LFALSESKIP:
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printf("%d",a);
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break;
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case OP_LOADTRUE:
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printf("%d",a);
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break;
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case OP_LOADNIL:
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printf("%d %d",a,b);
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printf(COMMENT "%d out",b+1);
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break;
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case OP_GETUPVAL:
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printf("%d %d",a,b);
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printf(COMMENT "%s",UPVALNAME(b));
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break;
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case OP_SETUPVAL:
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printf("%d %d",a,b);
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printf(COMMENT "%s",UPVALNAME(b));
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break;
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case OP_GETTABUP:
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printf("%d %d %d",a,b,c);
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printf(COMMENT "%s",UPVALNAME(b));
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printf(" "); PrintConstant(f,c);
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break;
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case OP_GETTABLE:
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printf("%d %d %d",a,b,c);
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break;
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case OP_GETI:
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printf("%d %d %d",a,b,c);
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break;
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case OP_GETFIELD:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_SETTABUP:
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printf("%d %d %d%s",a,b,c,ISK);
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printf(COMMENT "%s",UPVALNAME(a));
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printf(" "); PrintConstant(f,b);
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if (isk) { printf(" "); PrintConstant(f,c); }
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break;
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case OP_SETTABLE:
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printf("%d %d %d%s",a,b,c,ISK);
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if (isk) { printf(COMMENT); PrintConstant(f,c); }
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break;
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case OP_SETI:
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printf("%d %d %d%s",a,b,c,ISK);
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if (isk) { printf(COMMENT); PrintConstant(f,c); }
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break;
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case OP_SETFIELD:
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printf("%d %d %d%s",a,b,c,ISK);
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printf(COMMENT); PrintConstant(f,b);
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if (isk) { printf(" "); PrintConstant(f,c); }
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break;
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case OP_NEWTABLE:
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printf("%d %d %d",a,b,c);
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printf(COMMENT "%d",c+EXTRAARGC);
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break;
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case OP_SELF:
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printf("%d %d %d%s",a,b,c,ISK);
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if (isk) { printf(COMMENT); PrintConstant(f,c); }
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break;
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case OP_ADDI:
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printf("%d %d %d",a,b,sc);
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break;
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case OP_ADDK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_SUBK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_MULK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_MODK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_POWK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_DIVK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_IDIVK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_BANDK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_BORK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_BXORK:
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printf("%d %d %d",a,b,c);
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printf(COMMENT); PrintConstant(f,c);
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break;
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case OP_SHRI:
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printf("%d %d %d",a,b,sc);
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break;
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case OP_SHLI:
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printf("%d %d %d",a,b,sc);
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break;
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case OP_ADD:
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printf("%d %d %d",a,b,c);
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break;
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case OP_SUB:
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printf("%d %d %d",a,b,c);
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break;
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case OP_MUL:
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printf("%d %d %d",a,b,c);
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break;
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case OP_MOD:
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printf("%d %d %d",a,b,c);
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break;
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case OP_POW:
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printf("%d %d %d",a,b,c);
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break;
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case OP_DIV:
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printf("%d %d %d",a,b,c);
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break;
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case OP_IDIV:
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printf("%d %d %d",a,b,c);
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break;
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case OP_BAND:
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printf("%d %d %d",a,b,c);
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break;
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case OP_BOR:
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printf("%d %d %d",a,b,c);
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break;
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case OP_BXOR:
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printf("%d %d %d",a,b,c);
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break;
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case OP_SHL:
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printf("%d %d %d",a,b,c);
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break;
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case OP_SHR:
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printf("%d %d %d",a,b,c);
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break;
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case OP_MMBIN:
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printf("%d %d %d",a,b,c);
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printf(COMMENT "%s",eventname(c));
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break;
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case OP_MMBINI:
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printf("%d %d %d %d",a,sb,c,isk);
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printf(COMMENT "%s",eventname(c));
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if (isk) printf(" flip");
|
|
break;
|
|
case OP_MMBINK:
|
|
printf("%d %d %d %d",a,b,c,isk);
|
|
printf(COMMENT "%s ",eventname(c)); PrintConstant(f,b);
|
|
if (isk) printf(" flip");
|
|
break;
|
|
case OP_UNM:
|
|
printf("%d %d",a,b);
|
|
break;
|
|
case OP_BNOT:
|
|
printf("%d %d",a,b);
|
|
break;
|
|
case OP_NOT:
|
|
printf("%d %d",a,b);
|
|
break;
|
|
case OP_LEN:
|
|
printf("%d %d",a,b);
|
|
break;
|
|
case OP_CONCAT:
|
|
printf("%d %d",a,b);
|
|
break;
|
|
case OP_CLOSE:
|
|
printf("%d",a);
|
|
break;
|
|
case OP_TBC:
|
|
printf("%d",a);
|
|
break;
|
|
case OP_JMP:
|
|
printf("%d",GETARG_sJ(i));
|
|
printf(COMMENT "to %d",GETARG_sJ(i)+pc+2);
|
|
break;
|
|
case OP_EQ:
|
|
printf("%d %d %d",a,b,isk);
|
|
break;
|
|
case OP_LT:
|
|
printf("%d %d %d",a,b,isk);
|
|
break;
|
|
case OP_LE:
|
|
printf("%d %d %d",a,b,isk);
|
|
break;
|
|
case OP_EQK:
|
|
printf("%d %d %d",a,b,isk);
|
|
printf(COMMENT); PrintConstant(f,b);
|
|
break;
|
|
case OP_EQI:
|
|
printf("%d %d %d",a,sb,isk);
|
|
break;
|
|
case OP_LTI:
|
|
printf("%d %d %d",a,sb,isk);
|
|
break;
|
|
case OP_LEI:
|
|
printf("%d %d %d",a,sb,isk);
|
|
break;
|
|
case OP_GTI:
|
|
printf("%d %d %d",a,sb,isk);
|
|
break;
|
|
case OP_GEI:
|
|
printf("%d %d %d",a,sb,isk);
|
|
break;
|
|
case OP_TEST:
|
|
printf("%d %d",a,isk);
|
|
break;
|
|
case OP_TESTSET:
|
|
printf("%d %d %d",a,b,isk);
|
|
break;
|
|
case OP_CALL:
|
|
printf("%d %d %d",a,b,c);
|
|
printf(COMMENT);
|
|
if (b==0) printf("all in "); else printf("%d in ",b-1);
|
|
if (c==0) printf("all out"); else printf("%d out",c-1);
|
|
break;
|
|
case OP_TAILCALL:
|
|
printf("%d %d %d",a,b,c);
|
|
printf(COMMENT "%d in",b-1);
|
|
break;
|
|
case OP_RETURN:
|
|
printf("%d %d %d",a,b,c);
|
|
printf(COMMENT);
|
|
if (b==0) printf("all out"); else printf("%d out",b-1);
|
|
break;
|
|
case OP_RETURN0:
|
|
break;
|
|
case OP_RETURN1:
|
|
printf("%d",a);
|
|
break;
|
|
case OP_FORLOOP:
|
|
printf("%d %d",a,bx);
|
|
printf(COMMENT "to %d",pc-bx+2);
|
|
break;
|
|
case OP_FORPREP:
|
|
printf("%d %d",a,bx);
|
|
printf(COMMENT "to %d",pc+bx+2);
|
|
break;
|
|
case OP_TFORPREP:
|
|
printf("%d %d",a,bx);
|
|
printf(COMMENT "to %d",pc+bx+2);
|
|
break;
|
|
case OP_TFORCALL:
|
|
printf("%d %d",a,c);
|
|
break;
|
|
case OP_TFORLOOP:
|
|
printf("%d %d",a,bx);
|
|
printf(COMMENT "to %d",pc-bx+2);
|
|
break;
|
|
case OP_SETLIST:
|
|
printf("%d %d %d",a,b,c);
|
|
if (isk) printf(COMMENT "%d",c+EXTRAARGC);
|
|
break;
|
|
case OP_CLOSURE:
|
|
printf("%d %d",a,bx);
|
|
printf(COMMENT "%p",VOID(f->p[bx]));
|
|
break;
|
|
case OP_VARARG:
|
|
printf("%d %d",a,c);
|
|
printf(COMMENT);
|
|
if (c==0) printf("all out"); else printf("%d out",c-1);
|
|
break;
|
|
case OP_VARARGPREP:
|
|
printf("%d",a);
|
|
break;
|
|
case OP_EXTRAARG:
|
|
printf("%d",ax);
|
|
break;
|
|
#if 0
|
|
default:
|
|
printf("%d %d %d",a,b,c);
|
|
printf(COMMENT "not handled");
|
|
break;
|
|
#endif
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
|
|
#define SS(x) ((x==1)?"":"s")
|
|
#define S(x) (int)(x),SS(x)
|
|
|
|
static void PrintHeader(const Proto* f)
|
|
{
|
|
const char* s=f->source ? getstr(f->source) : "=?";
|
|
if (*s=='@' || *s=='=')
|
|
s++;
|
|
else if (*s==LUA_SIGNATURE[0])
|
|
s="(bstring)";
|
|
else
|
|
s="(string)";
|
|
printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
|
|
(f->linedefined==0)?"main":"function",s,
|
|
f->linedefined,f->lastlinedefined,
|
|
S(f->sizecode),VOID(f));
|
|
printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
|
|
(int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),
|
|
S(f->maxstacksize),S(f->sizeupvalues));
|
|
printf("%d local%s, %d constant%s, %d function%s\n",
|
|
S(f->sizelocvars),S(f->sizek),S(f->sizep));
|
|
}
|
|
|
|
static void PrintDebug(const Proto* f)
|
|
{
|
|
int i,n;
|
|
n=f->sizek;
|
|
printf("constants (%d) for %p:\n",n,VOID(f));
|
|
for (i=0; i<n; i++)
|
|
{
|
|
printf("\t%d\t",i);
|
|
PrintType(f,i);
|
|
PrintConstant(f,i);
|
|
printf("\n");
|
|
}
|
|
n=f->sizelocvars;
|
|
printf("locals (%d) for %p:\n",n,VOID(f));
|
|
for (i=0; i<n; i++)
|
|
{
|
|
printf("\t%d\t%s\t%d\t%d\n",
|
|
i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
|
|
}
|
|
n=f->sizeupvalues;
|
|
printf("upvalues (%d) for %p:\n",n,VOID(f));
|
|
for (i=0; i<n; i++)
|
|
{
|
|
printf("\t%d\t%s\t%d\t%d\n",
|
|
i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);
|
|
}
|
|
}
|
|
|
|
static void PrintFunction(const Proto* f, int full)
|
|
{
|
|
int i,n=f->sizep;
|
|
PrintHeader(f);
|
|
PrintCode(f);
|
|
if (full) PrintDebug(f);
|
|
for (i=0; i<n; i++) PrintFunction(f->p[i],full);
|
|
}
|