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: 2012-06-02 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         1194129 :     ValueMap *getData() { return static_cast<ValueMap *>(getPrivate()); }
      89                 :     static void mark(JSTracer *trc, JSObject *obj);
      90                 :     static void finalize(JSContext *cx, 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         1188558 :     ValueSet *getData() { return static_cast<ValueSet *>(getPrivate()); }
     107                 :     static void mark(JSTracer *trc, JSObject *obj);
     108                 :     static void finalize(JSContext *cx, 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__ */

Generated by: LCOV version 1.7