/*
** $Id: lcode.h,v 1.64 2016/01/05 16:22:37 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  (ORDER OP)
*/
typedef enum BinOpr
{
	OPR_ADD,
	OPR_SUB,
	OPR_MUL,
	OPR_MOD,
	OPR_POW,
	OPR_DIV,
	OPR_IDIV,
	OPR_BAND,
	OPR_BOR,
	OPR_BXOR,
	OPR_SHL,
	OPR_SHR,
	OPR_CONCAT,
	OPR_EQ,
	OPR_LT,
	OPR_LE,
	OPR_NE,
	OPR_GT,
	OPR_GE,
	OPR_AND,
	OPR_OR,
	OPR_NOBINOPR
} BinOpr;


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


/* get (pointer to) instruction of given 'expdesc' */
#define getinstruction(fs,e)	((fs)->f->code[(e)->u.info])

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

#define luaK_setmultret(fs,e)	luaK_setreturns(fs, e, LUA_MULTRET)

#define luaK_jumpto(fs,t)	luaK_patchlist(fs, luaK_jump(fs), t)

LUAI_FUNC int luaK_codeABx(FuncState* fs, OpCode o, int A, unsigned int Bx);
LUAI_FUNC int luaK_codeABC(FuncState* fs, OpCode o, int A, int B, int C);
LUAI_FUNC int luaK_codek(FuncState* fs, int reg, int k);
LUAI_FUNC void luaK_fixline(FuncState* fs, int line);
LUAI_FUNC void luaK_nil(FuncState* fs, int from, int n);
LUAI_FUNC void luaK_reserveregs(FuncState* fs, int n);
LUAI_FUNC void luaK_checkstack(FuncState* fs, int n);
LUAI_FUNC int luaK_stringK(FuncState* fs, TString* s);
LUAI_FUNC int luaK_intK(FuncState* fs, lua_Integer n);
LUAI_FUNC void luaK_dischargevars(FuncState* fs, expdesc* e);
LUAI_FUNC int luaK_exp2anyreg(FuncState* fs, expdesc* e);
LUAI_FUNC void luaK_exp2anyregup(FuncState* fs, expdesc* e);
LUAI_FUNC void luaK_exp2nextreg(FuncState* fs, expdesc* e);
LUAI_FUNC void luaK_exp2val(FuncState* fs, expdesc* e);
LUAI_FUNC int luaK_exp2RK(FuncState* fs, expdesc* e);
LUAI_FUNC void luaK_self(FuncState* fs, expdesc* e, expdesc* key);
LUAI_FUNC void luaK_indexed(FuncState* fs, expdesc* t, expdesc* k);
LUAI_FUNC void luaK_goiftrue(FuncState* fs, expdesc* e);
LUAI_FUNC void luaK_goiffalse(FuncState* fs, expdesc* e);
LUAI_FUNC void luaK_storevar(FuncState* fs, expdesc* var, expdesc* e);
LUAI_FUNC void luaK_setreturns(FuncState* fs, expdesc* e, int nresults);
LUAI_FUNC void luaK_setoneret(FuncState* fs, expdesc* e);
LUAI_FUNC int luaK_jump(FuncState* fs);
LUAI_FUNC void luaK_ret(FuncState* fs, int first, int nret);
LUAI_FUNC void luaK_patchlist(FuncState* fs, int list, int target);
LUAI_FUNC void luaK_patchtohere(FuncState* fs, int list);
LUAI_FUNC void luaK_patchclose(FuncState* fs, int list, int level);
LUAI_FUNC void luaK_concat(FuncState* fs, int* l1, int l2);
LUAI_FUNC int luaK_getlabel(FuncState* fs);
LUAI_FUNC void luaK_prefix(FuncState* fs, UnOpr op, expdesc* v, int line);
LUAI_FUNC void luaK_infix(FuncState* fs, BinOpr op, expdesc* v);
LUAI_FUNC void luaK_posfix(FuncState* fs, BinOpr op, expdesc* v1,
                           expdesc* v2, int line);
LUAI_FUNC void luaK_setlist(FuncState* fs, int base, int nelems, int tostore);


#endif