/*

** $Id: lcode.h,v 1.38 2002/12/11 12:34:22 roberto Exp $

** Code generator for Lua

** See Copyright Notice in lua.h

*/



#ifndef lcode_h

#define lcode_h



#include "llex.h"

#include "lobject.h"

#include "lopcodes.h"

#include "lparser.h"





/*

** Marks the end of a patch list. It is an invalid value both as an absolute

** address, and as a list link (would link an element to itself).

*/

#define NO_JUMP (-1)





/*

** grep "ORDER OPR" if you change these enums

*/

typedef enum BinOpr {

  OPR_ADD, OPR_SUB, OPR_MULT, OPR_DIV, OPR_POW,

  OPR_CONCAT,

  OPR_NE, OPR_EQ,

  OPR_LT, OPR_LE, OPR_GT, OPR_GE,

  OPR_AND, OPR_OR,

  OPR_NOBINOPR

} BinOpr;



#define binopistest(op)	((op) >= OPR_NE)



typedef enum UnOpr { OPR_MINUS, OPR_NOT, OPR_NOUNOPR } UnOpr;





#define getcode(fs,e)	((fs)->f->code[(e)->info])



#define luaK_codeAsBx(fs,o,A,sBx)	luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)



int luaK_code (FuncState *fs, Instruction i, int line);

int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);

int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);

void luaK_fixline (FuncState *fs, int line);

void luaK_nil (FuncState *fs, int from, int n);

void luaK_reserveregs (FuncState *fs, int n);

void luaK_checkstack (FuncState *fs, int n);

int luaK_stringK (FuncState *fs, TString *s);

int luaK_numberK (FuncState *fs, lua_Number r);

void luaK_dischargevars (FuncState *fs, expdesc *e);

int luaK_exp2anyreg (FuncState *fs, expdesc *e);

void luaK_exp2nextreg (FuncState *fs, expdesc *e);

void luaK_exp2val (FuncState *fs, expdesc *e);

int luaK_exp2RK (FuncState *fs, expdesc *e);

void luaK_self (FuncState *fs, expdesc *e, expdesc *key);

void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);

void luaK_goiftrue (FuncState *fs, expdesc *e);

void luaK_goiffalse (FuncState *fs, expdesc *e);

void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);

void luaK_setcallreturns (FuncState *fs, expdesc *var, int nresults);

int luaK_jump (FuncState *fs);

void luaK_patchlist (FuncState *fs, int list, int target);

void luaK_patchtohere (FuncState *fs, int list);

void luaK_concat (FuncState *fs, int *l1, int l2);

int luaK_getlabel (FuncState *fs);

void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v);

void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);

void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, expdesc *v2);





#endif

