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_codeAsBx (FuncState *fs, OpCode o, int A, int Bx);
65LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A,
66 int B, int C, int k);
67LUAI_FUNC int luaK_isKint (expdesc *e);
68LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v);
69LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
70LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
71LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
72LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
73LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n);
74LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
75LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
76LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
77LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
78LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
79LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
80LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
81LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
82LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
83LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
84LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
85LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
86LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
87LUAI_FUNC int luaK_jump (FuncState *fs);
88LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
89LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
90LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
91LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
92LUAI_FUNC int luaK_getlabel (FuncState *fs);
93LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
94LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
95LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
96 expdesc *v2, int line);
97LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc,
98 int ra, int asize, int hsize);
99LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
100LUAI_FUNC void luaK_finish (FuncState *fs);
101LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg);
102
103
104#endif
105