1/*
  2** $Id: lcode.h $
  3** Code generator for Lua
  4** See Copyright Notice in lua.h
  5*/
  6
  7#ifndef lcode_h
  8#define lcode_h
  9
 10#include "llex.h"
 11#include "lobject.h"
 12#include "lopcodes.h"
 13#include "lparser.h"
 14
 15
 16/*
 17** Marks the end of a patch list. It is an invalid value both as an absolute
 18** address, and as a list link (would link an element to itself).
 19*/
 20#define NO_JUMP (-1)
 21
 22
 23/*
 24** grep "ORDER OPR" if you change these enums  (ORDER OP)
 25*/
 26typedef enum BinOpr {
 27  /* arithmetic operators */
 28  OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
 29  OPR_DIV, OPR_IDIV,
 30  /* bitwise operators */
 31  OPR_BAND, OPR_BOR, OPR_BXOR,
 32  OPR_SHL, OPR_SHR,
 33  /* string operator */
 34  OPR_CONCAT,
 35  /* comparison operators */
 36  OPR_EQ, OPR_LT, OPR_LE,
 37  OPR_NE, OPR_GT, OPR_GE,
 38  /* logical operators */
 39  OPR_AND, OPR_OR,
 40  OPR_NOBINOPR
 41} BinOpr;
 42
 43
 44/* true if operation is foldable (that is, it is arithmetic or bitwise) */
 45#define foldbinop(op)	((op) <= OPR_SHR)
 46
 47
 48#define luaK_codeABC(fs,o,a,b,c)	luaK_codeABCk(fs,o,a,b,c,0)
 49
 50
 51typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
 52
 53
 54/* get (pointer to) instruction of given 'expdesc' */
 55#define getinstruction(fs,e)	((fs)->f->code[(e)->u.info])
 56
 57
 58#define luaK_setmultret(fs,e)	luaK_setreturns(fs, e, LUA_MULTRET)
 59
 60#define luaK_jumpto(fs,t)	luaK_patchlist(fs, luaK_jump(fs), t)
 61
 62LUAI_FUNC int luaK_code (FuncState *fs, Instruction i);
 63LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
 64LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A,
 65                                            int B, int C, int k);
 66LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v);
 67LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
 68LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
 69LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
 70LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
 71LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n);
 72LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
 73LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
 74LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
 75LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
 76LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
 77LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
 78LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
 79LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
 80LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
 81LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
 82LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
 83LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
 84LUAI_FUNC int luaK_jump (FuncState *fs);
 85LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
 86LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
 87LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
 88LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
 89LUAI_FUNC int luaK_getlabel (FuncState *fs);
 90LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
 91LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
 92LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
 93                            expdesc *v2, int line);
 94LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc,
 95                                  int ra, int asize, int hsize);
 96LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
 97LUAI_FUNC void luaK_finish (FuncState *fs);
 98LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg);
 99
100
101#endif