print.c
上传用户:yisoukefu
上传日期:2020-08-09
资源大小:39506k
文件大小:5k
- /*
- ** $Id: print.c,v 1.54 2006/01/11 22:49:27 lhf Exp $
- ** print bytecodes
- ** See Copyright Notice in lua.h
- */
- #include <ctype.h>
- #include <stdio.h>
- #define luac_c
- #define LUA_CORE
- #include "ldebug.h"
- #include "lobject.h"
- #include "lopcodes.h"
- #include "lundump.h"
- #define PrintFunction luaU_print
- #define Sizeof(x) ((int)sizeof(x))
- #define VOID(p) ((const void*)(p))
- static void PrintString(const Proto* f, int n)
- {
- const char* s=svalue(&f->k[n]);
- putchar('"');
- for (; *s; s++)
- {
- switch (*s)
- {
- case '"': printf("\""); break;
- case 'a': printf("\a"); break;
- case 'b': printf("\b"); break;
- case 'f': printf("\f"); break;
- case 'n': printf("\n"); break;
- case 'r': printf("\r"); break;
- case 't': printf("\t"); break;
- case 'v': printf("\v"); break;
- default: if (isprint((unsigned char)*s))
- printf("%c",*s);
- else
- printf("\%03u",(unsigned char)*s);
- }
- }
- putchar('"');
- }
- static void PrintConstant(const Proto* f, int i)
- {
- const TValue* o=&f->k[i];
- switch (ttype(o))
- {
- case LUA_TNIL:
- printf("nil");
- break;
- case LUA_TBOOLEAN:
- printf(bvalue(o) ? "true" : "false");
- break;
- case LUA_TNUMBER:
- printf(LUA_NUMBER_FMT,nvalue(o));
- break;
- case LUA_TSTRING:
- PrintString(f,i);
- break;
- default: /* cannot happen */
- printf("? type=%d",ttype(o));
- break;
- }
- }
- static void PrintCode(const Proto* f)
- {
- const Instruction* code=f->code;
- int pc,n=f->sizecode;
- for (pc=0; pc<n; pc++)
- {
- Instruction i=code[pc];
- OpCode o=GET_OPCODE(i);
- int a=GETARG_A(i);
- int b=GETARG_B(i);
- int c=GETARG_C(i);
- int bx=GETARG_Bx(i);
- int sbx=GETARG_sBx(i);
- int line=getline(f,pc);
- printf("t%dt",pc+1);
- if (line>0) printf("[%d]t",line); else printf("[-]t");
- printf("%-9st",luaP_opnames[o]);
- switch (getOpMode(o))
- {
- case iABC:
- printf("%d",a);
- if (getBMode(o)!=OpArgN) printf(" %d",ISK(b) ? (-1-INDEXK(b)) : b);
- if (getCMode(o)!=OpArgN) printf(" %d",ISK(c) ? (-1-INDEXK(c)) : c);
- break;
- case iABx:
- if (getBMode(o)==OpArgK) printf("%d %d",a,-1-bx); else printf("%d %d",a,bx);
- break;
- case iAsBx:
- if (o==OP_JMP) printf("%d",sbx); else printf("%d %d",a,sbx);
- break;
- }
- switch (o)
- {
- case OP_LOADK:
- printf("t; "); PrintConstant(f,bx);
- break;
- case OP_GETUPVAL:
- case OP_SETUPVAL:
- printf("t; %s", (f->sizeupvalues>0) ? getstr(f->upvalues[b]) : "-");
- break;
- case OP_GETGLOBAL:
- case OP_SETGLOBAL:
- printf("t; %s",svalue(&f->k[bx]));
- break;
- case OP_GETTABLE:
- case OP_SELF:
- if (ISK(c)) { printf("t; "); PrintConstant(f,INDEXK(c)); }
- break;
- case OP_SETTABLE:
- case OP_ADD:
- case OP_SUB:
- case OP_MUL:
- case OP_DIV:
- case OP_POW:
- case OP_EQ:
- case OP_LT:
- case OP_LE:
- if (ISK(b) || ISK(c))
- {
- printf("t; ");
- if (ISK(b)) PrintConstant(f,INDEXK(b)); else printf("-");
- printf(" ");
- if (ISK(c)) PrintConstant(f,INDEXK(c)); else printf("-");
- }
- break;
- case OP_JMP:
- case OP_FORLOOP:
- case OP_FORPREP:
- printf("t; to %d",sbx+pc+2);
- break;
- case OP_CLOSURE:
- printf("t; %p",VOID(f->p[bx]));
- break;
- case OP_SETLIST:
- if (c==0) printf("t; %d",(int)code[++pc]);
- else printf("t; %d",c);
- break;
- default:
- break;
- }
- printf("n");
- }
- }
- #define SS(x) (x==1)?"":"s"
- #define S(x) x,SS(x)
- static void PrintHeader(const Proto* f)
- {
- const char* s=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, %d bytes at %p)n",
- (f->linedefined==0)?"main":"function",s,
- f->linedefined,f->lastlinedefined,
- S(f->sizecode),f->sizecode*Sizeof(Instruction),VOID(f));
- printf("%d%s param%s, %d slot%s, %d upvalue%s, ",
- f->numparams,f->is_vararg?"+":"",SS(f->numparams),
- S(f->maxstacksize),S(f->nups));
- printf("%d local%s, %d constant%s, %d function%sn",
- S(f->sizelocvars),S(f->sizek),S(f->sizep));
- }
- static void PrintConstants(const Proto* f)
- {
- int i,n=f->sizek;
- printf("constants (%d) for %p:n",n,VOID(f));
- for (i=0; i<n; i++)
- {
- printf("t%dt",i+1);
- PrintConstant(f,i);
- printf("n");
- }
- }
- static void PrintLocals(const Proto* f)
- {
- int i,n=f->sizelocvars;
- printf("locals (%d) for %p:n",n,VOID(f));
- for (i=0; i<n; i++)
- {
- printf("t%dt%st%dt%dn",
- i,getstr(f->locvars[i].varname),f->locvars[i].startpc+1,f->locvars[i].endpc+1);
- }
- }
- static void PrintUpvalues(const Proto* f)
- {
- int i,n=f->sizeupvalues;
- printf("upvalues (%d) for %p:n",n,VOID(f));
- if (f->upvalues==NULL) return;
- for (i=0; i<n; i++)
- {
- printf("t%dt%sn",i,getstr(f->upvalues[i]));
- }
- }
- void PrintFunction(const Proto* f, int full)
- {
- int i,n=f->sizep;
- PrintHeader(f);
- PrintCode(f);
- if (full)
- {
- PrintConstants(f);
- PrintLocals(f);
- PrintUpvalues(f);
- }
- for (i=0; i<n; i++) PrintFunction(f->p[i],full);
- }