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      1 /*	$NetBSD: lcode.h,v 1.9 2023/04/16 20:46:17 nikita Exp $	*/
      2 
      3 /*
      4 ** Id: lcode.h
      5 ** Code generator for Lua
      6 ** See Copyright Notice in lua.h
      7 */
      8 
      9 #ifndef lcode_h
     10 #define lcode_h
     11 
     12 #include "llex.h"
     13 #include "lobject.h"
     14 #include "lopcodes.h"
     15 #include "lparser.h"
     16 
     17 
     18 /*
     19 ** Marks the end of a patch list. It is an invalid value both as an absolute
     20 ** address, and as a list link (would link an element to itself).
     21 */
     22 #define NO_JUMP (-1)
     23 
     24 
     25 /*
     26 ** grep "ORDER OPR" if you change these enums  (ORDER OP)
     27 */
     28 typedef enum BinOpr {
     29 #ifndef _KERNEL
     30   /* arithmetic operators */
     31   OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD, OPR_POW,
     32   OPR_DIV,
     33 #else /* _KERNEL */
     34   OPR_ADD, OPR_SUB, OPR_MUL, OPR_MOD,
     35 #endif /* _KERNEL */
     36   OPR_IDIV,
     37   /* bitwise operators */
     38   OPR_BAND, OPR_BOR, OPR_BXOR,
     39   OPR_SHL, OPR_SHR,
     40   /* string operator */
     41   OPR_CONCAT,
     42   /* comparison operators */
     43   OPR_EQ, OPR_LT, OPR_LE,
     44   OPR_NE, OPR_GT, OPR_GE,
     45   /* logical operators */
     46   OPR_AND, OPR_OR,
     47   OPR_NOBINOPR
     48 } BinOpr;
     49 
     50 
     51 /* true if operation is foldable (that is, it is arithmetic or bitwise) */
     52 #define foldbinop(op)	((op) <= OPR_SHR)
     53 
     54 
     55 #define luaK_codeABC(fs,o,a,b,c)	luaK_codeABCk(fs,o,a,b,c,0)
     56 
     57 
     58 typedef enum UnOpr { OPR_MINUS, OPR_BNOT, OPR_NOT, OPR_LEN, OPR_NOUNOPR } UnOpr;
     59 
     60 
     61 /* get (pointer to) instruction of given 'expdesc' */
     62 #define getinstruction(fs,e)	((fs)->f->code[(e)->u.info])
     63 
     64 
     65 #define luaK_setmultret(fs,e)	luaK_setreturns(fs, e, LUA_MULTRET)
     66 
     67 #define luaK_jumpto(fs,t)	luaK_patchlist(fs, luaK_jump(fs), t)
     68 
     69 LUAI_FUNC int luaK_code (FuncState *fs, Instruction i);
     70 LUAI_FUNC int luaK_codeABx (FuncState *fs, OpCode o, int A, unsigned int Bx);
     71 LUAI_FUNC int luaK_codeAsBx (FuncState *fs, OpCode o, int A, int Bx);
     72 LUAI_FUNC int luaK_codeABCk (FuncState *fs, OpCode o, int A,
     73                                             int B, int C, int k);
     74 LUAI_FUNC int luaK_isKint (expdesc *e);
     75 LUAI_FUNC int luaK_exp2const (FuncState *fs, const expdesc *e, TValue *v);
     76 LUAI_FUNC void luaK_fixline (FuncState *fs, int line);
     77 LUAI_FUNC void luaK_nil (FuncState *fs, int from, int n);
     78 LUAI_FUNC void luaK_reserveregs (FuncState *fs, int n);
     79 LUAI_FUNC void luaK_checkstack (FuncState *fs, int n);
     80 LUAI_FUNC void luaK_int (FuncState *fs, int reg, lua_Integer n);
     81 LUAI_FUNC void luaK_dischargevars (FuncState *fs, expdesc *e);
     82 LUAI_FUNC int luaK_exp2anyreg (FuncState *fs, expdesc *e);
     83 LUAI_FUNC void luaK_exp2anyregup (FuncState *fs, expdesc *e);
     84 LUAI_FUNC void luaK_exp2nextreg (FuncState *fs, expdesc *e);
     85 LUAI_FUNC void luaK_exp2val (FuncState *fs, expdesc *e);
     86 LUAI_FUNC int luaK_exp2RK (FuncState *fs, expdesc *e);
     87 LUAI_FUNC void luaK_self (FuncState *fs, expdesc *e, expdesc *key);
     88 LUAI_FUNC void luaK_indexed (FuncState *fs, expdesc *t, expdesc *k);
     89 LUAI_FUNC void luaK_goiftrue (FuncState *fs, expdesc *e);
     90 LUAI_FUNC void luaK_goiffalse (FuncState *fs, expdesc *e);
     91 LUAI_FUNC void luaK_storevar (FuncState *fs, expdesc *var, expdesc *e);
     92 LUAI_FUNC void luaK_setreturns (FuncState *fs, expdesc *e, int nresults);
     93 LUAI_FUNC void luaK_setoneret (FuncState *fs, expdesc *e);
     94 LUAI_FUNC int luaK_jump (FuncState *fs);
     95 LUAI_FUNC void luaK_ret (FuncState *fs, int first, int nret);
     96 LUAI_FUNC void luaK_patchlist (FuncState *fs, int list, int target);
     97 LUAI_FUNC void luaK_patchtohere (FuncState *fs, int list);
     98 LUAI_FUNC void luaK_concat (FuncState *fs, int *l1, int l2);
     99 LUAI_FUNC int luaK_getlabel (FuncState *fs);
    100 LUAI_FUNC void luaK_prefix (FuncState *fs, UnOpr op, expdesc *v, int line);
    101 LUAI_FUNC void luaK_infix (FuncState *fs, BinOpr op, expdesc *v);
    102 LUAI_FUNC void luaK_posfix (FuncState *fs, BinOpr op, expdesc *v1,
    103                             expdesc *v2, int line);
    104 LUAI_FUNC void luaK_settablesize (FuncState *fs, int pc,
    105                                   int ra, int asize, int hsize);
    106 LUAI_FUNC void luaK_setlist (FuncState *fs, int base, int nelems, int tostore);
    107 LUAI_FUNC void luaK_finish (FuncState *fs);
    108 LUAI_FUNC l_noret luaK_semerror (LexState *ls, const char *msg);
    109 
    110 
    111 #endif
    112