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/*
** TeCGraf - PUC-Rio
** $Id: opcode.h,v 2.1 1994/04/20 22:07:57 celes Exp celes $
*/
#ifndef opcode_h
#define opcode_h
#ifndef STACKGAP
#define STACKGAP 128
#endif
#ifndef real
#define real float
#endif
#define FIELDS_PER_FLUSH 40
typedef unsigned char Byte;
typedef unsigned short Word;
typedef signed long Long;
typedef union
{
struct {char c1; char c2;} m;
Word w;
} CodeWord;
typedef union
{
struct {char c1; char c2; char c3; char c4;} m;
float f;
} CodeFloat;
typedef enum
{
PUSHNIL,
PUSH0, PUSH1, PUSH2,
PUSHBYTE,
PUSHWORD,
PUSHFLOAT,
PUSHSTRING,
PUSHLOCAL0, PUSHLOCAL1, PUSHLOCAL2, PUSHLOCAL3, PUSHLOCAL4,
PUSHLOCAL5, PUSHLOCAL6, PUSHLOCAL7, PUSHLOCAL8, PUSHLOCAL9,
PUSHLOCAL,
PUSHGLOBAL,
PUSHINDEXED,
PUSHMARK,
PUSHOBJECT,
STORELOCAL0, STORELOCAL1, STORELOCAL2, STORELOCAL3, STORELOCAL4,
STORELOCAL5, STORELOCAL6, STORELOCAL7, STORELOCAL8, STORELOCAL9,
STORELOCAL,
STOREGLOBAL,
STOREINDEXED0,
STOREINDEXED,
STORELIST0,
STORELIST,
STORERECORD,
ADJUST,
CREATEARRAY,
EQOP,
LTOP,
LEOP,
ADDOP,
SUBOP,
MULTOP,
DIVOP,
CONCOP,
MINUSOP,
NOTOP,
ONTJMP,
ONFJMP,
JMP,
UPJMP,
IFFJMP,
IFFUPJMP,
POP,
CALLFUNC,
RETCODE,
HALT,
SETFUNCTION,
SETLINE,
RESET
} OpCode;
typedef enum
{
T_MARK,
T_NIL,
T_NUMBER,
T_STRING,
T_ARRAY,
T_FUNCTION,
T_CFUNCTION,
T_USERDATA
} Type;
typedef void (*Cfunction) (void);
typedef int (*Input) (void);
typedef union
{
Cfunction f;
real n;
char *s;
Byte *b;
struct Hash *a;
void *u;
} Value;
typedef struct Object
{
Type tag;
Value value;
} Object;
typedef struct
{
Object object;
} Symbol;
/* Macros to access structure members */
#define tag(o) ((o)->tag)
#define nvalue(o) ((o)->value.n)
#define svalue(o) ((o)->value.s)
#define bvalue(o) ((o)->value.b)
#define avalue(o) ((o)->value.a)
#define fvalue(o) ((o)->value.f)
#define uvalue(o) ((o)->value.u)
/* Macros to access symbol table */
#define s_object(i) (lua_table[i].object)
#define s_tag(i) (tag(&s_object(i)))
#define s_nvalue(i) (nvalue(&s_object(i)))
#define s_svalue(i) (svalue(&s_object(i)))
#define s_bvalue(i) (bvalue(&s_object(i)))
#define s_avalue(i) (avalue(&s_object(i)))
#define s_fvalue(i) (fvalue(&s_object(i)))
#define s_uvalue(i) (uvalue(&s_object(i)))
#define get_word(code,pc) {code.m.c1 = *pc++; code.m.c2 = *pc++;}
#define get_float(code,pc) {code.m.c1 = *pc++; code.m.c2 = *pc++;\
code.m.c3 = *pc++; code.m.c4 = *pc++;}
/* Exported functions */
int lua_execute (Byte *pc);
void lua_markstack (void);
char *lua_strdup (char *l);
void lua_setinput (Input fn); /* from "lex.c" module */
char *lua_lasttext (void); /* from "lex.c" module */
int lua_parse (void); /* from "lua.stx" module */
void lua_type (void);
void lua_obj2number (void);
void lua_print (void);
void lua_internaldofile (void);
void lua_internaldostring (void);
void lua_travstack (void (*fn)(Object *));
#endif
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