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lcode.h (3756B)

      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, int Bx);
     64 LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A, int B, int C,
     65                                             int k);
     66 LUAI_FUNC int luaK_codevABCk (FuncState *fs, OpCode o, int A, int B, int C,
     67                                              int k);
     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 void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
     80 LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
     81 LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
     82 LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
     83 LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
     84 LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
     85 LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
     86 LUAI_FUNC int luaK_jump (FuncState *fs);
     87 LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
     88 LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
     89 LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
     90 LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
     91 LUAI_FUNC int luaK_getlabel (FuncState *fs);
     92 LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
     93 LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
     94 LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
     95                             expdesc *v2, int line);
     96 LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc,
     97                                   int ra, int asize, int hsize);
     98 LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
     99 LUAI_FUNC void luaK_finish (FuncState *fs);
    100 LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg);
    101 
    102 
    103 #endif