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 */ 26 typedef 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 51 typedef 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 62 LUAI_FUNC int luaK_code (FuncState *fs, Instruction i); 63 LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx); 64 LUAI_FUNC int luaK_codeAsBx (FuncState *fs, OpCode o, int A, int Bx); 65 LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A, 66 int B, int C, int k); 67 LUAI_FUNC int luaK_isKint (expdesc *e); 68 LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v); 69 LUAI_FUNC void luaK_fixline (FuncState *fs, int line); 70 LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n); 71 LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n); 72 LUAI_FUNC void luaK_checkstack (FuncState *fs, int n); 73 LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n); 74 LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e); 75 LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e); 76 LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e); 77 LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e); 78 LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e); 79 LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e); 80 LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key); 81 LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k); 82 LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e); 83 LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e); 84 LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e); 85 LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults); 86 LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e); 87 LUAI_FUNC int luaK_jump (FuncState *fs); 88 LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret); 89 LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target); 90 LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list); 91 LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2); 92 LUAI_FUNC int luaK_getlabel (FuncState *fs); 93 LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line); 94 LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v); 95 LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1, 96 expdesc *v2, int line); 97 LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc, 98 int ra, int asize, int hsize); 99 LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore); 100 LUAI_FUNC void luaK_finish (FuncState *fs); 101 LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg); 102 103 104 #endif 105