2 ** $Id: luac.c,v 1.76 2018/06/19 01:32:02 lhf Exp $
3 ** Lua compiler (saves bytecodes to files; also lists bytecodes)
4 ** See Copyright Notice in lua.h
25 static void PrintFunction(const Proto* f, int full);
26 #define luaU_print PrintFunction
28 #define PROGNAME "luac" /* default program name */
29 #define OUTPUT PROGNAME ".out" /* default output file */
31 static int listing=0; /* list bytecodes? */
32 static int dumping=1; /* dump bytecodes? */
33 static int stripping=0; /* strip debug information? */
34 static char Output[]={ OUTPUT }; /* default output file name */
35 static const char* output=Output; /* actual output file name */
36 static const char* progname=PROGNAME; /* actual program name */
38 static void fatal(const char* message)
40 fprintf(stderr,"%s: %s\n",progname,message);
44 static void cannot(const char* what)
46 fprintf(stderr,"%s: cannot %s %s: %s\n",progname,what,output,strerror(errno));
50 static void usage(const char* message)
53 fprintf(stderr,"%s: unrecognized option '%s'\n",progname,message);
55 fprintf(stderr,"%s: %s\n",progname,message);
57 "usage: %s [options] [filenames]\n"
58 "Available options are:\n"
59 " -l list (use -l -l for full listing)\n"
60 " -o name output to file 'name' (default is \"%s\")\n"
62 " -s strip debug information\n"
63 " -v show version information\n"
64 " -- stop handling options\n"
65 " - stop handling options and process stdin\n"
70 #define IS(s) (strcmp(argv[i],s)==0)
72 static int doargs(int argc, char* argv[])
76 if (argv[0]!=NULL && *argv[0]!=0) progname=argv[0];
77 for (i=1; i<argc; i++)
79 if (*argv[i]!='-') /* end of options; keep it */
81 else if (IS("--")) /* end of options; skip it */
84 if (version) ++version;
87 else if (IS("-")) /* end of options; use stdin */
89 else if (IS("-l")) /* list */
91 else if (IS("-o")) /* output file */
94 if (output==NULL || *output==0 || (*output=='-' && output[1]!=0))
95 usage("'-o' needs argument");
96 if (IS("-")) output=NULL;
98 else if (IS("-p")) /* parse only */
100 else if (IS("-s")) /* strip debug information */
102 else if (IS("-v")) /* show version */
104 else /* unknown option */
107 if (i==argc && (listing || !dumping))
114 printf("%s\n",LUA_COPYRIGHT);
115 if (version==argc-1) exit(EXIT_SUCCESS);
120 #define FUNCTION "(function()end)();"
122 static const char* reader(lua_State *L, void *ud, size_t *size)
127 *size=sizeof(FUNCTION)-1;
137 #define toproto(L,i) getproto(L->top+(i))
139 static const Proto* combine(lua_State* L, int n)
142 return toproto(L,-1);
147 if (lua_load(L,reader,&i,"=(" PROGNAME ")",NULL)!=LUA_OK) fatal(lua_tostring(L,-1));
151 f->p[i]=toproto(L,i-n-1);
152 if (f->p[i]->sizeupvalues>0) f->p[i]->upvalues[0].instack=0;
159 static int writer(lua_State* L, const void* p, size_t size, void* u)
162 return (fwrite(p,size,1,(FILE*)u)!=1) && (size!=0);
165 static int pmain(lua_State* L)
167 int argc=(int)lua_tointeger(L,1);
168 char** argv=(char**)lua_touserdata(L,2);
171 if (!lua_checkstack(L,argc)) fatal("too many input files");
172 for (i=0; i<argc; i++)
174 const char* filename=IS("-") ? NULL : argv[i];
175 if (luaL_loadfile(L,filename)!=LUA_OK) fatal(lua_tostring(L,-1));
178 if (listing) luaU_print(f,listing>1);
181 FILE* D= (output==NULL) ? stdout : fopen(output,"wb");
182 if (D==NULL) cannot("open");
184 luaU_dump(L,f,writer,D,stripping);
186 if (ferror(D)) cannot("write");
187 if (fclose(D)) cannot("close");
192 int main(int argc, char* argv[])
195 int i=doargs(argc,argv);
197 if (argc<=0) usage("no input files given");
199 if (L==NULL) fatal("cannot create state: not enough memory");
200 lua_pushcfunction(L,&pmain);
201 lua_pushinteger(L,argc);
202 lua_pushlightuserdata(L,argv);
203 if (lua_pcall(L,2,0,0)!=LUA_OK) fatal(lua_tostring(L,-1));
209 ** $Id: luac.c,v 1.76 2018/06/19 01:32:02 lhf Exp $
211 ** See Copyright Notice in lua.h
222 #include "lopcodes.h"
224 #define VOID(p) ((const void*)(p))
226 static void PrintString(const TString* ts)
228 const char* s=getstr(ts);
229 size_t i,n=tsslen(ts);
233 int c=(int)(unsigned char)s[i];
236 case '"': printf("\\\""); break;
237 case '\\': printf("\\\\"); break;
238 case '\a': printf("\\a"); break;
239 case '\b': printf("\\b"); break;
240 case '\f': printf("\\f"); break;
241 case '\n': printf("\\n"); break;
242 case '\r': printf("\\r"); break;
243 case '\t': printf("\\t"); break;
244 case '\v': printf("\\v"); break;
245 default: if (isprint(c))
254 static void PrintConstant(const Proto* f, int i)
256 const TValue* o=&f->k[i];
263 printf(bvalue(o) ? "true" : "false");
268 sprintf(buff,LUA_NUMBER_FMT,fltvalue(o));
270 if (buff[strspn(buff,"-0123456789")]=='\0') printf(".0");
274 printf(LUA_INTEGER_FMT,ivalue(o));
276 case LUA_TSHRSTR: case LUA_TLNGSTR:
277 PrintString(tsvalue(o));
279 default: /* cannot happen */
280 printf("? type=%d",ttype(o));
285 #define UPVALNAME(x) ((f->upvalues[x].name) ? getstr(f->upvalues[x].name) : "-")
286 #define MYK(x) (-1-(x))
288 static void PrintCode(const Proto* f)
290 const Instruction* code=f->code;
291 int pc,n=f->sizecode;
292 for (pc=0; pc<n; pc++)
294 Instruction i=code[pc];
295 OpCode o=GET_OPCODE(i);
301 int sbx=GETARG_sBx(i);
302 int line=getfuncline(f,pc);
303 printf("\t%d\t",pc+1);
304 if (line>0) printf("[%d]\t",line); else printf("[-]\t");
305 printf("%-9s\t",luaP_opnames[o]);
306 switch (getOpMode(o))
310 if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (MYK(INDEXK(b))) : b);
311 if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (MYK(INDEXK(c))) : c);
315 if (getBMode(o)==OpArgK) printf(" %d",MYK(bx));
316 if (getBMode(o)==OpArgU) printf(" %d",bx);
319 printf("%d %d",a,sbx);
322 printf("%d",MYK(ax));
328 printf("\t; "); PrintConstant(f,bx);
332 printf("\t; %s",UPVALNAME(b));
335 printf("\t; %s",UPVALNAME(b));
336 if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
339 printf("\t; %s",UPVALNAME(a));
340 if (ISK(b)) { printf(" "); PrintConstant(f,INDEXK(b)); }
341 if (ISK(c)) { printf(" "); PrintConstant(f,INDEXK(c)); }
345 if (ISK(c)) { printf("\t; "); PrintConstant(f,INDEXK(c)); }
363 if (ISK(b) || ISK(c))
366 if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
368 if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
375 printf("\t; to %d",sbx+pc+2);
378 printf("\t; %p",VOID(f->p[bx]));
381 if (c==0) printf("\t; %d",(int)code[++pc]); else printf("\t; %d",c);
384 printf("\t; "); PrintConstant(f,ax);
393 #define SS(x) ((x==1)?"":"s")
394 #define S(x) (int)(x),SS(x)
396 static void PrintHeader(const Proto* f)
398 const char* s=f->source ? getstr(f->source) : "=?";
399 if (*s=='@' || *s=='=')
401 else if (*s==LUA_SIGNATURE[0])
405 printf("\n%s <%s:%d,%d> (%d instruction%s at %p)\n",
406 (f->linedefined==0)?"main":"function",s,
407 f->linedefined,f->lastlinedefined,
408 S(f->sizecode),VOID(f));
409 printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
410 (int)(f->numparams),f->is_vararg?"+":"",SS(f->numparams),
411 S(f->maxstacksize),S(f->sizeupvalues));
412 printf("%d local%s, %d constant%s, %d function%s\n",
413 S(f->sizelocvars),S(f->sizek),S(f->sizep));
416 static void PrintDebug(const Proto* f)
420 printf("constants (%d) for %p:\n",n,VOID(f));
423 printf("\t%d\t",i+1);
428 printf("locals (%d) for %p:\n",n,VOID(f));
431 printf("\t%d\t%s\t%d\t%d\n",
432 i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
435 printf("upvalues (%d) for %p:\n",n,VOID(f));
438 printf("\t%d\t%s\t%d\t%d\n",
439 i,UPVALNAME(i),f->upvalues[i].instack,f->upvalues[i].idx);
443 static void PrintFunction(const Proto* f, int full)
448 if (full) PrintDebug(f);
449 for (i=0; i<n; i++) PrintFunction(f->p[i],full);