mirror of
https://github.com/lua/lua
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165 lines
3.0 KiB
C
165 lines
3.0 KiB
C
/*
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** TeCGraf - PUC-Rio
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** $Id: opcode.h,v 1.4 1994/04/13 21:37:20 celes Exp celes $
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*/
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#ifndef opcode_h
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#define opcode_h
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#ifndef STACKGAP
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#define STACKGAP 128
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#endif
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#ifndef real
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#define real float
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#endif
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#define FIELDS_PER_FLUSH 40
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typedef unsigned char Byte;
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typedef unsigned short Word;
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typedef union
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{
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struct {char c1; char c2;} m;
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Word w;
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} CodeWord;
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typedef union
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{
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struct {char c1; char c2; char c3; char c4;} m;
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float f;
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} CodeFloat;
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typedef enum
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{
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PUSHNIL,
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PUSH0, PUSH1, PUSH2,
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PUSHBYTE,
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PUSHWORD,
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PUSHFLOAT,
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PUSHSTRING,
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PUSHLOCAL0, PUSHLOCAL1, PUSHLOCAL2, PUSHLOCAL3, PUSHLOCAL4,
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PUSHLOCAL5, PUSHLOCAL6, PUSHLOCAL7, PUSHLOCAL8, PUSHLOCAL9,
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PUSHLOCAL,
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PUSHGLOBAL,
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PUSHINDEXED,
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PUSHMARK,
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PUSHOBJECT,
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STORELOCAL0, STORELOCAL1, STORELOCAL2, STORELOCAL3, STORELOCAL4,
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STORELOCAL5, STORELOCAL6, STORELOCAL7, STORELOCAL8, STORELOCAL9,
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STORELOCAL,
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STOREGLOBAL,
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STOREINDEXED0,
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STOREINDEXED,
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STORELIST0,
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STORELIST,
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STORERECORD,
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ADJUST,
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CREATEARRAY,
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EQOP,
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LTOP,
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LEOP,
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ADDOP,
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SUBOP,
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MULTOP,
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DIVOP,
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CONCOP,
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MINUSOP,
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NOTOP,
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ONTJMP,
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ONFJMP,
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JMP,
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UPJMP,
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IFFJMP,
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IFFUPJMP,
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POP,
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CALLFUNC,
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RETCODE,
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HALT,
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SETFUNCTION,
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SETLINE,
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RESET
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} OpCode;
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typedef enum
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{
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T_MARK,
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T_NIL,
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T_NUMBER,
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T_STRING,
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T_ARRAY,
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T_FUNCTION,
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T_CFUNCTION,
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T_USERDATA
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} Type;
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typedef void (*Cfunction) (void);
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typedef int (*Input) (void);
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typedef union
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{
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Cfunction f;
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real n;
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char *s;
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Byte *b;
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struct Hash *a;
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void *u;
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} Value;
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typedef struct Object
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{
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Type tag;
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Value value;
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} Object;
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typedef struct
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{
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char *name;
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Object object;
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} Symbol;
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/* Macros to access structure members */
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#define tag(o) ((o)->tag)
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#define nvalue(o) ((o)->value.n)
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#define svalue(o) ((o)->value.s)
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#define bvalue(o) ((o)->value.b)
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#define avalue(o) ((o)->value.a)
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#define fvalue(o) ((o)->value.f)
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#define uvalue(o) ((o)->value.u)
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/* Macros to access symbol table */
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#define s_name(i) (lua_table[i].name)
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#define s_object(i) (lua_table[i].object)
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#define s_tag(i) (tag(&s_object(i)))
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#define s_nvalue(i) (nvalue(&s_object(i)))
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#define s_svalue(i) (svalue(&s_object(i)))
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#define s_bvalue(i) (bvalue(&s_object(i)))
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#define s_avalue(i) (avalue(&s_object(i)))
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#define s_fvalue(i) (fvalue(&s_object(i)))
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#define s_uvalue(i) (uvalue(&s_object(i)))
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#define get_word(code,pc) {code.m.c1 = *pc++; code.m.c2 = *pc++;}
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#define get_float(code,pc) {code.m.c1 = *pc++; code.m.c2 = *pc++;\
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code.m.c3 = *pc++; code.m.c4 = *pc++;}
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/* Exported functions */
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int lua_execute (Byte *pc);
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void lua_markstack (void);
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char *lua_strdup (char *l);
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void lua_setinput (Input fn); /* from "lex.c" module */
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char *lua_lasttext (void); /* from "lex.c" module */
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int lua_parse (void); /* from "lua.stx" module */
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void lua_type (void);
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void lua_obj2number (void);
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void lua_print (void);
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void lua_internaldofile (void);
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void lua_internaldostring (void);
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void lua_travstack (void (*fn)(Object *));
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#endif
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