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1 /*
2 ** $Id: lcode.h,v 1.64.1.1 2017/04/19 17:20:42 roberto Exp $
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 */
26 typedef enum BinOpr {
27   OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
28   OPR_DIV,
29   OPR_IDIV,
30   OPR_BAND, OPR_BOR, OPR_BXOR,
31   OPR_SHL, OPR_SHR,
32   OPR_CONCAT,
33   OPR_EQ, OPR_LT, OPR_LE,
34   OPR_NE, OPR_GT, OPR_GE,
35   OPR_AND, OPR_OR,
36   OPR_NOBINOPR
37 } BinOpr;
38 
39 
40 typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
41 
42 
43 /* get (pointer to) instruction of given 'expdesc' */
44 #define getinstruction(fs,e)	((fs)->f->code[(e)->u.info])
45 
46 #define luaK_codeAsBx(fs,o,A,sBx)	luaK_codeABx(fs,o,A,(sBx)+MAXARG_sBx)
47 
48 #define luaK_setmultret(fs,e)	luaK_setreturns(fs, e, LUA_MULTRET)
49 
50 #define luaK_jumpto(fs,t)	luaK_patchlist(fs, luaK_jump(fs), t)
51 
52 LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
53 LUAI_FUNC int luaK_codeABC (FuncState *fs, OpCode o, int A, int B, int C);
54 LUAI_FUNC int luaK_codek (FuncState *fs, int reg, int k);
55 LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
56 LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
57 LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
58 LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
59 LUAI_FUNC int luaK_stringK (FuncState *fs, TString *s);
60 LUAI_FUNC int luaK_intK (FuncState *fs, lua_Integer n);
61 LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
62 LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
63 LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
64 LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
65 LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
66 LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
67 LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
68 LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
69 LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
70 LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
71 LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
72 LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
73 LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
74 LUAI_FUNC int luaK_jump (FuncState *fs);
75 LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
76 LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
77 LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
78 LUAI_FUNC void luaK_patchclose (FuncState *fs, int list, int level);
79 LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
80 LUAI_FUNC int luaK_getlabel (FuncState *fs);
81 LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
82 LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
83 LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
84                             expdesc *v2, int line);
85 LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
86 
87 
88 #endif
89