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** $Id: lobject.h,v 1.1 2003/02/09 21:30:32 dheck Exp $
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** Type definitions for Lua objects
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** See Copyright Notice in lua.h
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#define LUA_INTERNALERROR(s) assert(((void)s,0))
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#define LUA_ASSERT(c,s) assert(((void)s,(c)))
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#define LUA_INTERNALERROR(s) /* empty */
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#define LUA_ASSERT(c,s) /* empty */
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/* to avoid warnings, and make sure value is really unused */
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#define UNUSED(x) (x=0, (void)(x))
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#define UNUSED(x) ((void)(x)) /* to avoid warnings */
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/* mark for closures active in the stack */
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/* tags for values visible from Lua == first user-created tag */
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/* check whether `t' is a mark */
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#define is_T_MARK(t) ((t) == LUA_TMARK)
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struct TString *ts; /* LUA_TSTRING, LUA_TUSERDATA */
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struct Closure *cl; /* LUA_TFUNCTION */
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struct Hash *a; /* LUA_TTABLE */
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struct CallInfo *i; /* LUA_TLMARK */
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Number n; /* LUA_TNUMBER */
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/* Macros to access values */
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#define ttype(o) ((o)->ttype)
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#define nvalue(o) ((o)->value.n)
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#define tsvalue(o) ((o)->value.ts)
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#define clvalue(o) ((o)->value.cl)
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#define hvalue(o) ((o)->value.a)
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#define infovalue(o) ((o)->value.i)
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#define svalue(o) (tsvalue(o)->str)
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typedef struct lua_TObject {
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** String headers for string table
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** most `malloc' libraries allocate memory in blocks of 8 bytes. TSPACK
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** tries to make sizeof(TString) a multiple of this granularity, to reduce
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#define TSPACK ((int)sizeof(int))
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typedef struct TString {
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struct { /* for strings */
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int constindex; /* hint to reuse constants */
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struct { /* for userdata */
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struct TString *nexthash; /* chain for hash table */
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char str[TSPACK]; /* variable length string!! must be the last field! */
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** Function Prototypes
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typedef struct Proto {
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Number *knum; /* Number numbers used by the function */
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int nknum; /* size of `knum' */
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struct TString **kstr; /* strings used by the function */
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int nkstr; /* size of `kstr' */
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struct Proto **kproto; /* functions defined inside the function */
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int nkproto; /* size of `kproto' */
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int ncode; /* size of `code'; when 0 means an incomplete `Proto' */
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/* debug information */
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int *lineinfo; /* map from opcodes to source lines */
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int nlineinfo; /* size of `lineinfo' */
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struct LocVar *locvars; /* information about local variables */
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typedef struct LocVar {
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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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typedef struct Closure {
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lua_CFunction c; /* C functions */
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struct Proto *l; /* Lua functions */
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struct Closure *next;
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struct Closure *mark; /* marked closures (point to itself when not marked) */
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short isC; /* 0 for Lua functions, 1 for C functions */
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#define iscfunction(o) (ttype(o) == LUA_TFUNCTION && clvalue(o)->isC)
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typedef struct Node {
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struct Node *next; /* for chaining */
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typedef struct Hash {
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Node *firstfree; /* this position is free; all positions after it are full */
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struct Hash *mark; /* marked tables (point to itself when not marked) */
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/* unmarked tables and closures are represented by pointing `mark' to
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#define ismarked(x) ((x)->mark != (x))
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** informations about a call (for debugging)
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typedef struct CallInfo {
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struct Closure *func; /* function being called */
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const Instruction **pc; /* current pc of called function */
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int lastpc; /* last pc traced */
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int line; /* current line */
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int refi; /* current index in `lineinfo' */
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extern const TObject luaO_nilobject;
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extern const char *const luaO_typenames[];
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#define luaO_typename(o) (luaO_typenames[ttype(o)])
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lint32 luaO_power2 (lint32 n);
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char *luaO_openspace (lua_State *L, size_t n);
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int luaO_equalObj (const TObject *t1, const TObject *t2);
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int luaO_str2d (const char *s, Number *result);
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void luaO_verror (lua_State *L, const char *fmt, ...);
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void luaO_chunkid (char *out, const char *source, int len);
added
removed
lib-src/lua/lobject.h
