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  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.