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- /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Mozilla Communicator client code, released
- * March 31, 1998.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #ifndef jsatom_h___
- #define jsatom_h___
- /*
- * JS atom table.
- */
- #include <stddef.h>
- #include "jstypes.h"
- #include "jshash.h" /* Added by JSIFY */
- #include "jsapi.h"
- #include "jsprvtd.h"
- #include "jspubtd.h"
-
- #ifdef JS_THREADSAFE
- #include "jslock.h"
- #endif
-
- JS_BEGIN_EXTERN_C
-
- #define ATOM_PINNED 0x01 /* atom is pinned against GC */
- #define ATOM_INTERNED 0x02 /* pinned variant for JS_Intern* API */
- #define ATOM_MARK 0x04 /* atom is reachable via GC */
- #define ATOM_HIDDEN 0x08 /* atom is in special hidden subspace */
- #define ATOM_NOCOPY 0x40 /* don't copy atom string bytes */
- #define ATOM_TMPSTR 0x80 /* internal, to avoid extra string */
-
- struct JSAtom {
- JSHashEntry entry; /* key is jsval, value keyword info or
- unhidden atom if ATOM_HIDDEN */
- uint32 flags; /* pinned, interned, and mark flags */
- jsatomid number; /* atom serial number and hash code */
- };
-
- #define ATOM_KEY(atom) ((jsval)(atom)->entry.key)
- #define ATOM_IS_OBJECT(atom) JSVAL_IS_OBJECT(ATOM_KEY(atom))
- #define ATOM_TO_OBJECT(atom) JSVAL_TO_OBJECT(ATOM_KEY(atom))
- #define ATOM_IS_INT(atom) JSVAL_IS_INT(ATOM_KEY(atom))
- #define ATOM_TO_INT(atom) JSVAL_TO_INT(ATOM_KEY(atom))
- #define ATOM_IS_DOUBLE(atom) JSVAL_IS_DOUBLE(ATOM_KEY(atom))
- #define ATOM_TO_DOUBLE(atom) JSVAL_TO_DOUBLE(ATOM_KEY(atom))
- #define ATOM_IS_STRING(atom) JSVAL_IS_STRING(ATOM_KEY(atom))
- #define ATOM_TO_STRING(atom) JSVAL_TO_STRING(ATOM_KEY(atom))
- #define ATOM_IS_BOOLEAN(atom) JSVAL_IS_BOOLEAN(ATOM_KEY(atom))
- #define ATOM_TO_BOOLEAN(atom) JSVAL_TO_BOOLEAN(ATOM_KEY(atom))
-
- /*
- * Return a printable, lossless char[] representation of a string-type atom.
- * The lifetime of the result extends at least until the next GC activation,
- * longer if cx's string newborn root is not overwritten.
- */
- extern JS_FRIEND_API(const char *)
- js_AtomToPrintableString(JSContext *cx, JSAtom *atom);
-
- #define ATOM_KEYWORD(atom) ((struct keyword *)(atom)->entry.value)
- #define ATOM_SET_KEYWORD(atom,kw) ((atom)->entry.value = (kw))
-
- struct JSAtomListElement {
- JSHashEntry entry;
- };
-
- #define ALE_ATOM(ale) ((JSAtom *) (ale)->entry.key)
- #define ALE_INDEX(ale) ((jsatomid) JS_PTR_TO_UINT32((ale)->entry.value))
- #define ALE_JSOP(ale) ((JSOp) (ale)->entry.value)
- #define ALE_VALUE(ale) ((jsval) (ale)->entry.value)
- #define ALE_NEXT(ale) ((JSAtomListElement *) (ale)->entry.next)
-
- #define ALE_SET_ATOM(ale,atom) ((ale)->entry.key = (const void *)(atom))
- #define ALE_SET_INDEX(ale,index)((ale)->entry.value = JS_UINT32_TO_PTR(index))
- #define ALE_SET_JSOP(ale,op) ((ale)->entry.value = JS_UINT32_TO_PTR(op))
- #define ALE_SET_VALUE(ale,val) ((ale)->entry.value = (JSHashEntry *)(val))
- #define ALE_SET_NEXT(ale,link) ((ale)->entry.next = (JSHashEntry *)(link))
-
- struct JSAtomList {
- JSAtomListElement *list; /* literals indexed for mapping */
- JSHashTable *table; /* hash table if list gets too long */
- jsuint count; /* count of indexed literals */
- };
-
- #define ATOM_LIST_INIT(al) ((al)->list = NULL, (al)->table = NULL, \
- (al)->count = 0)
-
- #define ATOM_LIST_SEARCH(_ale,_al,_atom) \
- JS_BEGIN_MACRO \
- JSHashEntry **_hep; \
- ATOM_LIST_LOOKUP(_ale, _hep, _al, _atom); \
- JS_END_MACRO
-
- #define ATOM_LIST_LOOKUP(_ale,_hep,_al,_atom) \
- JS_BEGIN_MACRO \
- if ((_al)->table) { \
- _hep = JS_HashTableRawLookup((_al)->table, _atom->number, _atom); \
- _ale = *_hep ? (JSAtomListElement *) *_hep : NULL; \
- } else { \
- JSAtomListElement **_alep = &(_al)->list; \
- _hep = NULL; \
- while ((_ale = *_alep) != NULL) { \
- if (ALE_ATOM(_ale) == (_atom)) { \
- /* Hit, move atom's element to the front of the list. */ \
- *_alep = ALE_NEXT(_ale); \
- ALE_SET_NEXT(_ale, (_al)->list); \
- (_al)->list = _ale; \
- break; \
- } \
- _alep = (JSAtomListElement **)&_ale->entry.next; \
- } \
- } \
- JS_END_MACRO
-
- struct JSAtomMap {
- JSAtom **vector; /* array of ptrs to indexed atoms */
- jsatomid length; /* count of (to-be-)indexed atoms */
- };
-
- struct JSAtomState {
- JSRuntime *runtime; /* runtime that owns us */
- JSHashTable *table; /* hash table containing all atoms */
- jsatomid number; /* one beyond greatest atom number */
- jsatomid liveAtoms; /* number of live atoms after last GC */
-
- /* The rt->emptyString atom, see jsstr.c's js_InitRuntimeStringState. */
- JSAtom *emptyAtom;
-
- /* Type names and value literals. */
- JSAtom *typeAtoms[JSTYPE_LIMIT];
- JSAtom *booleanAtoms[2];
- JSAtom *nullAtom;
-
- /* Various built-in or commonly-used atoms, pinned on first context. */
- JSAtom *ArgumentsAtom;
- JSAtom *ArrayAtom;
- JSAtom *BooleanAtom;
- JSAtom *CallAtom;
- JSAtom *DateAtom;
- JSAtom *ErrorAtom;
- JSAtom *FunctionAtom;
- JSAtom *MathAtom;
- JSAtom *NamespaceAtom;
- JSAtom *NumberAtom;
- JSAtom *ObjectAtom;
- JSAtom *QNameAtom;
- JSAtom *RegExpAtom;
- JSAtom *ScriptAtom;
- JSAtom *StringAtom;
- JSAtom *XMLAtom;
- JSAtom *FileAtom;
- JSAtom *anonymousAtom;
- JSAtom *argumentsAtom;
- JSAtom *arityAtom;
- JSAtom *calleeAtom;
- JSAtom *callerAtom;
- JSAtom *classPrototypeAtom;
- JSAtom *constructorAtom;
- JSAtom *countAtom;
- JSAtom *eachAtom;
- JSAtom *etagoAtom;
- JSAtom *evalAtom;
- JSAtom *getAtom;
- JSAtom *getterAtom;
- JSAtom *indexAtom;
- JSAtom *inputAtom;
- JSAtom *lengthAtom;
- JSAtom *nameAtom;
- JSAtom *namespaceAtom;
- JSAtom *noSuchMethodAtom;
- JSAtom *parentAtom;
- JSAtom *protoAtom;
- JSAtom *ptagcAtom;
- JSAtom *qualifierAtom;
- JSAtom *setAtom;
- JSAtom *setterAtom;
- JSAtom *spaceAtom;
- JSAtom *stagoAtom;
- JSAtom *starAtom;
- JSAtom *starQualifierAtom;
- JSAtom *tagcAtom;
- JSAtom *toLocaleStringAtom;
- JSAtom *toSourceAtom;
- JSAtom *toStringAtom;
- JSAtom *valueOfAtom;
- JSAtom *xmlAtom;
-
- /* Less frequently used atoms, pinned lazily by JS_ResolveStandardClass. */
- struct {
- JSAtom *AnyNameAtom;
- JSAtom *AttributeNameAtom;
- JSAtom *EvalErrorAtom;
- JSAtom *InfinityAtom;
- JSAtom *InternalErrorAtom;
- JSAtom *NaNAtom;
- JSAtom *RangeErrorAtom;
- JSAtom *ReferenceErrorAtom;
- JSAtom *SyntaxErrorAtom;
- JSAtom *TypeErrorAtom;
- JSAtom *URIErrorAtom;
- JSAtom *XMLListAtom;
- JSAtom *decodeURIAtom;
- JSAtom *decodeURIComponentAtom;
- JSAtom *defineGetterAtom;
- JSAtom *defineSetterAtom;
- JSAtom *encodeURIAtom;
- JSAtom *encodeURIComponentAtom;
- JSAtom *escapeAtom;
- JSAtom *functionNamespaceURIAtom;
- JSAtom *hasOwnPropertyAtom;
- JSAtom *isFiniteAtom;
- JSAtom *isNaNAtom;
- JSAtom *isPrototypeOfAtom;
- JSAtom *isXMLNameAtom;
- JSAtom *lookupGetterAtom;
- JSAtom *lookupSetterAtom;
- JSAtom *parseFloatAtom;
- JSAtom *parseIntAtom;
- JSAtom *propertyIsEnumerableAtom;
- JSAtom *unescapeAtom;
- JSAtom *unevalAtom;
- JSAtom *unwatchAtom;
- JSAtom *watchAtom;
- } lazy;
-
- #ifdef JS_THREADSAFE
- JSThinLock lock;
- volatile uint32 tablegen;
- #endif
- #ifdef NARCISSUS
- JSAtom *callAtom;
- JSAtom *constructAtom;
- JSAtom *hasInstanceAtom;
- JSAtom *ExecutionContextAtom;
- JSAtom *currentAtom;
- #endif
- };
-
- /* Well-known predefined strings and their atoms. */
- extern const char *js_type_str[];
- extern const char *js_boolean_str[];
-
- extern const char js_Arguments_str[];
- extern const char js_Array_str[];
- extern const char js_Boolean_str[];
- extern const char js_Call_str[];
- extern const char js_Date_str[];
- extern const char js_Function_str[];
- extern const char js_Math_str[];
- extern const char js_Namespace_str[];
- extern const char js_Number_str[];
- extern const char js_Object_str[];
- extern const char js_QName_str[];
- extern const char js_RegExp_str[];
- extern const char js_Script_str[];
- extern const char js_String_str[];
- extern const char js_XML_str[];
- extern const char js_File_str[];
- extern const char js_anonymous_str[];
- extern const char js_arguments_str[];
- extern const char js_arity_str[];
- extern const char js_callee_str[];
- extern const char js_caller_str[];
- extern const char js_class_prototype_str[];
- extern const char js_constructor_str[];
- extern const char js_count_str[];
- extern const char js_etago_str[];
- extern const char js_each_str[];
- extern const char js_eval_str[];
- extern const char js_getter_str[];
- extern const char js_get_str[];
- extern const char js_index_str[];
- extern const char js_input_str[];
- extern const char js_length_str[];
- extern const char js_name_str[];
- extern const char js_namespace_str[];
- extern const char js_noSuchMethod_str[];
- extern const char js_object_str[];
- extern const char js_parent_str[];
- extern const char js_private_str[];
- extern const char js_proto_str[];
- extern const char js_ptagc_str[];
- extern const char js_qualifier_str[];
- extern const char js_setter_str[];
- extern const char js_set_str[];
- extern const char js_space_str[];
- extern const char js_stago_str[];
- extern const char js_star_str[];
- extern const char js_starQualifier_str[];
- extern const char js_tagc_str[];
- extern const char js_toSource_str[];
- extern const char js_toString_str[];
- extern const char js_toLocaleString_str[];
- extern const char js_valueOf_str[];
- extern const char js_xml_str[];
-
- #ifdef NARCISSUS
- extern const char js_call_str[];
- extern const char js_construct_str[];
- extern const char js_hasInstance_str[];
- extern const char js_ExecutionContext_str[];
- extern const char js_current_str[];
- #endif
-
- /*
- * Initialize atom state. Return true on success, false with an out of
- * memory error report on failure.
- */
- extern JSBool
- js_InitAtomState(JSContext *cx, JSAtomState *state);
-
- /*
- * Free and clear atom state (except for any interned string atoms).
- */
- extern void
- js_FreeAtomState(JSContext *cx, JSAtomState *state);
-
- /*
- * Interned strings are atoms that live until state's runtime is destroyed.
- * This function frees all interned string atoms, and then frees and clears
- * state's members (just as js_FreeAtomState does), unless there aren't any
- * interned strings in state -- in which case state must be "free" already.
- *
- * NB: js_FreeAtomState is called for each "last" context being destroyed in
- * a runtime, where there may yet be another context created in the runtime;
- * whereas js_FinishAtomState is called from JS_DestroyRuntime, when we know
- * that no more contexts will be created. Thus we minimize garbage during
- * context-free episodes on a runtime, while preserving atoms created by the
- * JS_Intern*String APIs for the life of the runtime.
- */
- extern void
- js_FinishAtomState(JSAtomState *state);
-
- /*
- * Atom garbage collection hooks.
- */
- typedef void
- (*JSGCThingMarker)(void *thing, void *data);
-
- extern void
- js_MarkAtomState(JSAtomState *state, uintN gcflags, JSGCThingMarker mark,
- void *data);
-
- extern void
- js_SweepAtomState(JSAtomState *state);
-
- extern JSBool
- js_InitPinnedAtoms(JSContext *cx, JSAtomState *state);
-
- extern void
- js_UnpinPinnedAtoms(JSAtomState *state);
-
- /*
- * Find or create the atom for an object. If we create a new atom, give it the
- * type indicated in flags. Return 0 on failure to allocate memory.
- */
- extern JSAtom *
- js_AtomizeObject(JSContext *cx, JSObject *obj, uintN flags);
-
- /*
- * Find or create the atom for a Boolean value. If we create a new atom, give
- * it the type indicated in flags. Return 0 on failure to allocate memory.
- */
- extern JSAtom *
- js_AtomizeBoolean(JSContext *cx, JSBool b, uintN flags);
-
- /*
- * Find or create the atom for an integer value. If we create a new atom, give
- * it the type indicated in flags. Return 0 on failure to allocate memory.
- */
- extern JSAtom *
- js_AtomizeInt(JSContext *cx, jsint i, uintN flags);
-
- /*
- * Find or create the atom for a double value. If we create a new atom, give
- * it the type indicated in flags. Return 0 on failure to allocate memory.
- */
- extern JSAtom *
- js_AtomizeDouble(JSContext *cx, jsdouble d, uintN flags);
-
- /*
- * Find or create the atom for a string. If we create a new atom, give it the
- * type indicated in flags. Return 0 on failure to allocate memory.
- */
- extern JSAtom *
- js_AtomizeString(JSContext *cx, JSString *str, uintN flags);
-
- extern JS_FRIEND_API(JSAtom *)
- js_Atomize(JSContext *cx, const char *bytes, size_t length, uintN flags);
-
- extern JS_FRIEND_API(JSAtom *)
- js_AtomizeChars(JSContext *cx, const jschar *chars, size_t length, uintN flags);
-
- /*
- * This variant handles all value tag types.
- */
- extern JSAtom *
- js_AtomizeValue(JSContext *cx, jsval value, uintN flags);
-
- /*
- * Convert v to an atomized string.
- */
- extern JSAtom *
- js_ValueToStringAtom(JSContext *cx, jsval v);
-
- /*
- * Assign atom an index and insert it on al.
- */
- extern JSAtomListElement *
- js_IndexAtom(JSContext *cx, JSAtom *atom, JSAtomList *al);
-
- /*
- * Get the atom with index i from map.
- */
- extern JS_FRIEND_API(JSAtom *)
- js_GetAtom(JSContext *cx, JSAtomMap *map, jsatomid i);
-
- /*
- * For all unmapped atoms recorded in al, add a mapping from the atom's index
- * to its address. The GC must not run until all indexed atoms in atomLists
- * have been mapped by scripts connected to live objects (Function and Script
- * class objects have scripts as/in their private data -- the GC knows about
- * these two classes).
- */
- extern JS_FRIEND_API(JSBool)
- js_InitAtomMap(JSContext *cx, JSAtomMap *map, JSAtomList *al);
-
- /*
- * Free map->vector and clear map.
- */
- extern JS_FRIEND_API(void)
- js_FreeAtomMap(JSContext *cx, JSAtomMap *map);
-
- JS_END_EXTERN_C
-
- #endif /* jsatom_h___ */
-