misc/liblua/print.c
author Stepan777 <stepik-777@mail.ru>
Fri, 08 Jun 2012 02:52:35 +0400
changeset 7198 5debd5fe526e
parent 2812 0a24853de796
child 10017 de822cd3df3a
permissions -rw-r--r--
1. Add IFDEFs for video recording 2. Options for video recording were hardcoded in engine, now they are hardcoded in frontend and passed to engine thru command line (later it will be possible to change them in frontend)

/*
** $Id: print.c,v 1.55a 2006/05/31 13:30:05 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 TString* ts)
{
 const char* s=getstr(ts);
 size_t i,n=ts->tsv.len;
 putchar('"');
 for (i=0; i<n; i++)
 {
  int c=s[i];
  switch (c)
  {
   case '"': printf("\\\""); break;
   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)c))
   			putchar(c);
		else
			printf("\\%03u",(unsigned char)c);
  }
 }
 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(rawtsvalue(o));
	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%d\t",pc+1);
  if (line>0) printf("[%d]\t",line); else printf("[-]\t");
  printf("%-9s\t",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%s\n",
	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%d\t",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%d\t%s\t%d\t%d\n",
  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%d\t%s\n",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);
}