/*
** $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);
}