LCOV - app.info - js/src/builtin/MapObject.h

LCOV - code coverage report
| Current view: | directory - js/src/builtin - MapObject.h (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 7 | 7 | 100.0 %
| Date: | 2012-04-07 | Functions: | 8 | 8 | 100.0 %

           1                 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
           2                 :  * vim: set ts=8 sw=4 et tw=99 ft=cpp:
           3                 :  *
           4                 :  * ***** BEGIN LICENSE BLOCK *****
           5                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
           6                 :  *
           7                 :  * The contents of this file are subject to the Mozilla Public License Version
           8                 :  * 1.1 (the "License"); you may not use this file except in compliance with
           9                 :  * the License. You may obtain a copy of the License at
          10                 :  * http://www.mozilla.org/MPL/
          11                 :  *
          12                 :  * Software distributed under the License is distributed on an "AS IS" basis,
          13                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
          14                 :  * for the specific language governing rights and limitations under the
          15                 :  * License.
          16                 :  *
          17                 :  * The Original Code is SpiderMonkey JavaScript engine.
          18                 :  *
          19                 :  * The Initial Developer of the Original Code is
          20                 :  * the Mozilla Foundation.
          21                 :  * Portions created by the Initial Developer are Copyright (C) 2011-2012
          22                 :  * the Initial Developer. All Rights Reserved.
          23                 :  *
          24                 :  * Contributor(s):
          25                 :  *  Jason Orendorff <jorendorff@mozilla.com>
          26                 :  *
          27                 :  * Alternatively, the contents of this file may be used under the terms of
          28                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
          29                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
          30                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
          31                 :  * of those above. If you wish to allow use of your version of this file only
          32                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
          33                 :  * use your version of this file under the terms of the MPL, indicate your
          34                 :  * decision by deleting the provisions above and replace them with the notice
          35                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
          36                 :  * the provisions above, a recipient may use your version of this file under
          37                 :  * the terms of any one of the MPL, the GPL or the LGPL.
          38                 :  *
          39                 :  * ***** END LICENSE BLOCK ***** */
          40                 :
          41                 : #ifndef MapObject_h__
          42                 : #define MapObject_h__
          43                 :
          44                 : #include "jsapi.h"
          45                 : #include "jscntxt.h"
          46                 : #include "jsobj.h"
          47                 :
          48                 : #include "js/HashTable.h"
          49                 :
          50                 : namespace js {
          51                 :
          52                 : /*
          53                 :  * Comparing two ropes for equality can fail. The js::HashTable template
          54                 :  * requires infallible hash() and match() operations. Therefore we require
          55                 :  * all values to be converted to hashable form before being used as a key
          56                 :  * in a Map or Set object.
          57                 :  *
          58                 :  * All values except ropes are hashable as-is.
          59                 :  */
          60        10107819 : class HashableValue {
          61                 :     HeapValue value;
          62                 :
          63                 :   public:
          64                 :     struct Hasher {
          65                 :         typedef HashableValue Lookup;
          66         2369457 :         static HashNumber hash(const Lookup &v) { return v.hash(); }
          67         1183797 :         static bool match(const HashableValue &k, const Lookup &l) { return k.equals(l); }
          68                 :     };
          69                 :
          70         7148457 :     HashableValue() : value(UndefinedValue()) {}
          71                 :
          72            6750 :     operator const HeapValue &() const { return value; }
          73                 :     bool setValue(JSContext *cx, const Value &v);
          74                 :     HashNumber hash() const;
          75                 :     bool equals(const HashableValue &other) const;
          76                 : };
          77                 :
          78                 : typedef HashMap<HashableValue, HeapValue, HashableValue::Hasher, RuntimeAllocPolicy> ValueMap;
          79                 : typedef HashSet<HashableValue, HashableValue::Hasher, RuntimeAllocPolicy> ValueSet;
          80                 :
          81                 : class MapObject : public JSObject {
          82                 :   public:
          83                 :     static JSObject *initClass(JSContext *cx, JSObject *obj);
          84                 :     static Class class_;
          85                 :   private:
          86                 :     typedef ValueMap Data;
          87                 :     static JSFunctionSpec methods[];
          88         1191524 :     ValueMap *getData() { return static_cast<ValueMap *>(getPrivate()); }
          89                 :     static void mark(JSTracer *trc, JSObject *obj);
          90                 :     static void finalize(FreeOp *fop, JSObject *obj);
          91                 :     static JSBool construct(JSContext *cx, unsigned argc, Value *vp);
          92                 :     static JSBool size(JSContext *cx, unsigned argc, Value *vp);
          93                 :     static JSBool get(JSContext *cx, unsigned argc, Value *vp);
          94                 :     static JSBool has(JSContext *cx, unsigned argc, Value *vp);
          95                 :     static JSBool set(JSContext *cx, unsigned argc, Value *vp);
          96                 :     static JSBool delete_(JSContext *cx, unsigned argc, Value *vp);
          97                 : };
          98                 :
          99                 : class SetObject : public JSObject {
         100                 :   public:
         101                 :     static JSObject *initClass(JSContext *cx, JSObject *obj);
         102                 :     static Class class_;
         103                 :   private:
         104                 :     typedef ValueSet Data;
         105                 :     static JSFunctionSpec methods[];
         106         1185953 :     ValueSet *getData() { return static_cast<ValueSet *>(getPrivate()); }
         107                 :     static void mark(JSTracer *trc, JSObject *obj);
         108                 :     static void finalize(FreeOp *fop, JSObject *obj);
         109                 :     static JSBool construct(JSContext *cx, unsigned argc, Value *vp);
         110                 :     static JSBool size(JSContext *cx, unsigned argc, Value *vp);
         111                 :     static JSBool has(JSContext *cx, unsigned argc, Value *vp);
         112                 :     static JSBool add(JSContext *cx, unsigned argc, Value *vp);
         113                 :     static JSBool delete_(JSContext *cx, unsigned argc, Value *vp);
         114                 : };
         115                 :
         116                 : } /* namespace js */
         117                 :
         118                 : extern JSObject *
         119                 : js_InitMapClass(JSContext *cx, JSObject *obj);
         120                 :
         121                 : extern JSObject *
         122                 : js_InitSetClass(JSContext *cx, JSObject *obj);
         123                 :
         124                 : #endif  /* MapObject_h__ */

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