mirror of
https://github.com/UberGames/rpgxEF.git
synced 2024-11-10 15:21:34 +00:00
a39565b783
... not quite content with where the project files lie but it is ok for now. ... compiling works fine so far (only tested mingw32 right now)
419 lines
9.9 KiB
C
419 lines
9.9 KiB
C
/*
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** $Id: lobject.h,v 2.42 2010/07/26 15:53:23 roberto Exp $
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** Type definitions for Lua objects
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** See Copyright Notice in lua.h
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*/
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#ifndef lobject_h
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#define lobject_h
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#include <stdarg.h>
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#include "llimits.h"
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#include "lua.h"
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/*
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** Extra tags for non-values
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*/
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#define LUA_TPROTO LUA_NUMTAGS
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#define LUA_TUPVAL (LUA_NUMTAGS+1)
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#define LUA_TDEADKEY (LUA_NUMTAGS+2)
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/*
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** Variant tag for light C functions (negative to be considered
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** non collectable by 'iscollectable')
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*/
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#define LUA_TLCF (~0x0F | LUA_TFUNCTION)
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/*
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** Union of all collectable objects
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*/
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typedef union GCObject GCObject;
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/*
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** Common Header for all collectable objects (in macro form, to be
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** included in other objects)
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*/
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#define CommonHeader GCObject *next; lu_byte tt; lu_byte marked
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/*
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** Common header in struct form
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*/
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typedef struct GCheader {
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CommonHeader;
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} GCheader;
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/*
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** Union of all Lua values
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*/
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typedef union {
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GCObject *gc; /* collectable objects */
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void *p; /* light userdata */
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lua_Number n; /* numbers */
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int b; /* booleans */
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lua_CFunction f; /* light C functions */
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} Value;
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/*
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** Tagged Values. This is the basic representation of values in Lua,
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** an actual value plus a tag with its type.
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*/
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#define TValuefields Value value_; int tt_
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typedef struct lua_TValue {
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TValuefields;
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} TValue;
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/* macro defining a nil value */
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#define NILCONSTANT {NULL}, LUA_TNIL
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/*
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** type tag of a TValue
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*/
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#define ttype(o) ((o)->tt_)
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/*
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** type tag of a TValue with no variants
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*/
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#define ttypenv(o) (ttype(o) & 0x0F)
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/* Macros to test type */
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#define ttisnil(o) (ttype(o) == LUA_TNIL)
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#define ttisnumber(o) (ttype(o) == LUA_TNUMBER)
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#define ttisstring(o) (ttype(o) == LUA_TSTRING)
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#define ttistable(o) (ttype(o) == LUA_TTABLE)
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#define ttisfunction(o) (ttypenv(o) == LUA_TFUNCTION)
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#define ttisclosure(o) (ttype(o) == LUA_TFUNCTION)
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#define ttislcf(o) (ttype(o) == LUA_TLCF)
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#define ttisboolean(o) (ttype(o) == LUA_TBOOLEAN)
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#define ttisuserdata(o) (ttype(o) == LUA_TUSERDATA)
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#define ttisthread(o) (ttype(o) == LUA_TTHREAD)
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#define ttislightuserdata(o) (ttype(o) == LUA_TLIGHTUSERDATA)
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#define ttisdeadkey(o) (ttype(o) == LUA_TDEADKEY)
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/* Macros to access values */
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#define gcvalue(o) check_exp(iscollectable(o), (o)->value_.gc)
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#define pvalue(o) check_exp(ttislightuserdata(o), (o)->value_.p)
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#define nvalue(o) check_exp(ttisnumber(o), (o)->value_.n)
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#define rawtsvalue(o) check_exp(ttisstring(o), &(o)->value_.gc->ts)
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#define tsvalue(o) (&rawtsvalue(o)->tsv)
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#define rawuvalue(o) check_exp(ttisuserdata(o), &(o)->value_.gc->u)
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#define uvalue(o) (&rawuvalue(o)->uv)
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#define clvalue(o) check_exp(ttisclosure(o), &(o)->value_.gc->cl)
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#define fvalue(o) check_exp(ttislcf(o), (o)->value_.f)
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#define hvalue(o) check_exp(ttistable(o), &(o)->value_.gc->h)
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#define bvalue(o) check_exp(ttisboolean(o), (o)->value_.b)
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#define thvalue(o) check_exp(ttisthread(o), &(o)->value_.gc->th)
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#define l_isfalse(o) (ttisnil(o) || (ttisboolean(o) && bvalue(o) == 0))
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#define iscollectable(o) (ttype(o) >= LUA_TSTRING)
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/* Macros for internal tests */
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#define righttt(obj) (ttype(obj) == gcvalue(obj)->gch.tt)
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#define checkconsistency(obj) lua_assert(!iscollectable(obj) || righttt(obj))
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#define checkliveness(g,obj) \
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lua_assert(!iscollectable(obj) || (righttt(obj) && !isdead(g,gcvalue(obj))))
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/* Macros to set values */
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#define setnilvalue(obj) ((obj)->tt_=LUA_TNIL)
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#define setnvalue(obj,x) \
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{ TValue *i_o=(obj); i_o->value_.n=(x); i_o->tt_=LUA_TNUMBER; }
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#define setfvalue(obj,x) \
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{ TValue *i_o=(obj); i_o->value_.f=(x); i_o->tt_=LUA_TLCF; }
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#define changenvalue(o,x) check_exp((o)->tt_==LUA_TNUMBER, (o)->value_.n=(x))
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#define setpvalue(obj,x) \
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{ TValue *i_o=(obj); i_o->value_.p=(x); i_o->tt_=LUA_TLIGHTUSERDATA; }
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#define setbvalue(obj,x) \
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{ TValue *i_o=(obj); i_o->value_.b=(x); i_o->tt_=LUA_TBOOLEAN; }
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#define setsvalue(L,obj,x) \
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{ TValue *i_o=(obj); \
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i_o->value_.gc=cast(GCObject *, (x)); i_o->tt_=LUA_TSTRING; \
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checkliveness(G(L),i_o); }
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#define setuvalue(L,obj,x) \
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{ TValue *i_o=(obj); \
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i_o->value_.gc=cast(GCObject *, (x)); i_o->tt_=LUA_TUSERDATA; \
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checkliveness(G(L),i_o); }
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#define setthvalue(L,obj,x) \
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{ TValue *i_o=(obj); \
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i_o->value_.gc=cast(GCObject *, (x)); i_o->tt_=LUA_TTHREAD; \
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checkliveness(G(L),i_o); }
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#define setclvalue(L,obj,x) \
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{ TValue *i_o=(obj); \
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i_o->value_.gc=cast(GCObject *, (x)); i_o->tt_=LUA_TFUNCTION; \
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checkliveness(G(L),i_o); }
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#define sethvalue(L,obj,x) \
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{ TValue *i_o=(obj); \
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i_o->value_.gc=cast(GCObject *, (x)); i_o->tt_=LUA_TTABLE; \
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checkliveness(G(L),i_o); }
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#define setptvalue(L,obj,x) \
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{ TValue *i_o=(obj); \
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i_o->value_.gc=cast(GCObject *, (x)); i_o->tt_=LUA_TPROTO; \
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checkliveness(G(L),i_o); }
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#define setdeadvalue(obj) ((obj)->tt_=LUA_TDEADKEY)
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#define setobj(L,obj1,obj2) \
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{ const TValue *o2=(obj2); TValue *o1=(obj1); \
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o1->value_ = o2->value_; o1->tt_=o2->tt_; \
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checkliveness(G(L),o1); }
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/*
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** different types of assignments, according to destination
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*/
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/* from stack to (same) stack */
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#define setobjs2s setobj
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/* to stack (not from same stack) */
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#define setobj2s setobj
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#define setsvalue2s setsvalue
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#define sethvalue2s sethvalue
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#define setptvalue2s setptvalue
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/* from table to same table */
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#define setobjt2t setobj
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/* to table */
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#define setobj2t setobj
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/* to new object */
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#define setobj2n setobj
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#define setsvalue2n setsvalue
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typedef TValue *StkId; /* index to stack elements */
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/*
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** Header for string value; string bytes follow the end of this structure
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*/
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typedef union TString {
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L_Umaxalign dummy; /* ensures maximum alignment for strings */
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struct {
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CommonHeader;
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lu_byte reserved;
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unsigned int hash;
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size_t len;
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} tsv;
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} TString;
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/* get the actual string (array of bytes) from a TString */
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#define getstr(ts) cast(const char *, (ts) + 1)
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/* get the actual string (array of bytes) from a Lua value */
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#define svalue(o) getstr(rawtsvalue(o))
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/*
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** Header for userdata; memory area follows the end of this structure
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*/
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typedef union Udata {
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L_Umaxalign dummy; /* ensures maximum alignment for `local' udata */
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struct {
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CommonHeader;
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struct Table *metatable;
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struct Table *env;
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size_t len;
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} uv;
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} Udata;
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/*
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** Description of an upvalue for function prototypes
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*/
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typedef struct Upvaldesc {
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TString *name; /* upvalue name (for debug information) */
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lu_byte instack; /* whether it is in stack */
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lu_byte idx; /* index of upvalue (in stack or in outer function's list) */
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} Upvaldesc;
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/*
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** Description of a local variable for function prototypes
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** (used for debug information)
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*/
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typedef struct LocVar {
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TString *varname;
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int startpc; /* first point where variable is active */
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int endpc; /* first point where variable is dead */
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} LocVar;
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/*
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** Function Prototypes
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*/
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typedef struct Proto {
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CommonHeader;
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TValue *k; /* constants used by the function */
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Instruction *code;
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struct Proto **p; /* functions defined inside the function */
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int *lineinfo; /* map from opcodes to source lines */
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LocVar *locvars; /* information about local variables */
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Upvaldesc *upvalues; /* upvalue information */
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union Closure *cache; /* last created closure with this prototype */
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TString *source;
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int sizeupvalues; /* size of 'upvalues' */
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int sizek; /* size of `k' */
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int sizecode;
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int sizelineinfo;
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int sizep; /* size of `p' */
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int sizelocvars;
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int linedefined;
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int lastlinedefined;
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GCObject *gclist;
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lu_byte numparams; /* number of fixed parameters */
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lu_byte is_vararg;
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lu_byte maxstacksize; /* maximum stack used by this function */
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} Proto;
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/*
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** Lua Upvalues
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*/
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typedef struct UpVal {
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CommonHeader;
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TValue *v; /* points to stack or to its own value */
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union {
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TValue value; /* the value (when closed) */
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struct { /* double linked list (when open) */
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struct UpVal *prev;
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struct UpVal *next;
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} l;
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} u;
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} UpVal;
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/*
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** Closures
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*/
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#define ClosureHeader \
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CommonHeader; lu_byte isC; lu_byte nupvalues; GCObject *gclist
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typedef struct CClosure {
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ClosureHeader;
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lua_CFunction f;
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TValue upvalue[1]; /* list of upvalues */
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} CClosure;
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typedef struct LClosure {
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ClosureHeader;
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struct Proto *p;
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UpVal *upvals[1]; /* list of upvalues */
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} LClosure;
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typedef union Closure {
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CClosure c;
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LClosure l;
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} Closure;
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#define isLfunction(o) (ttisclosure(o) && !clvalue(o)->c.isC)
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#define getproto(o) (clvalue(o)->l.p)
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/*
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** Tables
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*/
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typedef union TKey {
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struct {
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TValuefields;
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struct Node *next; /* for chaining */
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} nk;
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TValue tvk;
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} TKey;
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typedef struct Node {
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TValue i_val;
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TKey i_key;
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} Node;
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typedef struct Table {
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CommonHeader;
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lu_byte flags; /* 1<<p means tagmethod(p) is not present */
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lu_byte lsizenode; /* log2 of size of `node' array */
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struct Table *metatable;
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TValue *array; /* array part */
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Node *node;
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Node *lastfree; /* any free position is before this position */
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GCObject *gclist;
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int sizearray; /* size of `array' array */
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} Table;
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/*
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** `module' operation for hashing (size is always a power of 2)
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*/
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#define lmod(s,size) \
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(check_exp((size&(size-1))==0, (cast(int, (s) & ((size)-1)))))
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#define twoto(x) (1<<(x))
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#define sizenode(t) (twoto((t)->lsizenode))
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/*
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** (address of) a fixed nil value
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*/
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#define luaO_nilobject (&luaO_nilobject_)
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LUAI_DDEC const TValue luaO_nilobject_;
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LUAI_FUNC int luaO_int2fb (unsigned int x);
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LUAI_FUNC int luaO_fb2int (int x);
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LUAI_FUNC int luaO_ceillog2 (lu_int32 x);
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LUAI_FUNC lua_Number luaO_arith (int op, lua_Number v1, lua_Number v2);
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LUAI_FUNC int luaO_rawequalObj (const TValue *t1, const TValue *t2);
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LUAI_FUNC int luaO_str2d (const char *s, lua_Number *result);
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LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,
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va_list argp);
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LUAI_FUNC const char *luaO_pushfstring (lua_State *L, const char *fmt, ...);
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LUAI_FUNC void luaO_chunkid (char *out, const char *source, size_t len);
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#endif
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