LCOV - code coverage report
Current view: directory - js/src - jsatominlines.h (source / functions) Found Hit Coverage
Test: app.info Lines: 69 66 95.7 %
Date: 2012-06-02 Functions: 11 11 100.0 %

       1                 : /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
       2                 :  *
       3                 :  * ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is Mozilla Communicator client code, released
      17                 :  * March 31, 1998.
      18                 :  *
      19                 :  * The Initial Developer of the Original Code is
      20                 :  * Netscape Communications Corporation.
      21                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      22                 :  * the Initial Developer. All Rights Reserved.
      23                 :  *
      24                 :  * Contributor(s):
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      28                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : #ifndef jsatominlines_h___
      41                 : #define jsatominlines_h___
      42                 : 
      43                 : #include "jsatom.h"
      44                 : #include "jsnum.h"
      45                 : #include "jsobj.h"
      46                 : #include "jsstr.h"
      47                 : 
      48                 : #include "mozilla/RangedPtr.h"
      49                 : #include "vm/String.h"
      50                 : 
      51                 : inline JSAtom *
      52       255026699 : js::AtomStateEntry::asPtr() const
      53                 : {
      54       255026699 :     JS_ASSERT(bits != 0);
      55       255026699 :     JSAtom *atom = reinterpret_cast<JSAtom *>(bits & NO_TAG_MASK);
      56       255026699 :     JSString::readBarrier(atom);
      57       255026699 :     return atom;
      58                 : }
      59                 : 
      60                 : inline bool
      61        23584860 : js_ValueToAtom(JSContext *cx, const js::Value &v, JSAtom **atomp)
      62                 : {
      63        23584860 :     if (!v.isString()) {
      64         3363591 :         JSString *str = js::ToStringSlow(cx, v);
      65         3363591 :         if (!str)
      66               0 :             return false;
      67         6727182 :         JS::Anchor<JSString *> anchor(str);
      68         3363591 :         *atomp = js_AtomizeString(cx, str);
      69         3363591 :         return !!*atomp;
      70                 :     }
      71                 : 
      72        20221269 :     JSString *str = v.toString();
      73        20221269 :     if (str->isAtom()) {
      74        18903577 :         *atomp = &str->asAtom();
      75        18903577 :         return true;
      76                 :     }
      77                 : 
      78         1317692 :     *atomp = js_AtomizeString(cx, str);
      79         1317692 :     return !!*atomp;
      80                 : }
      81                 : 
      82                 : inline bool
      83        13964951 : js_ValueToStringId(JSContext *cx, const js::Value &v, jsid *idp)
      84                 : {
      85                 :     JSAtom *atom;
      86        13964951 :     if (js_ValueToAtom(cx, v, &atom)) {
      87        13964951 :         *idp = ATOM_TO_JSID(atom);
      88        13964951 :         return true;
      89                 :     }
      90               0 :     return false;
      91                 : }
      92                 : 
      93                 : inline bool
      94            8566 : js_InternNonIntElementId(JSContext *cx, JSObject *obj, const js::Value &idval,
      95                 :                          jsid *idp)
      96                 : {
      97            8566 :     JS_ASSERT(!idval.isInt32() || !INT_FITS_IN_JSID(idval.toInt32()));
      98                 : 
      99                 : #if JS_HAS_XML_SUPPORT
     100                 :     extern bool js_InternNonIntElementIdSlow(JSContext *, JSObject *,
     101                 :                                              const js::Value &, jsid *);
     102            8566 :     if (idval.isObject())
     103               6 :         return js_InternNonIntElementIdSlow(cx, obj, idval, idp);
     104                 : #endif
     105                 : 
     106            8560 :     return js_ValueToStringId(cx, idval, idp);
     107                 : }
     108                 : 
     109                 : inline bool
     110         1520714 : js_InternNonIntElementId(JSContext *cx, JSObject *obj, const js::Value &idval,
     111                 :                          jsid *idp, js::Value *vp)
     112                 : {
     113         1520714 :     JS_ASSERT(!idval.isInt32() || !INT_FITS_IN_JSID(idval.toInt32()));
     114                 : 
     115                 : #if JS_HAS_XML_SUPPORT
     116                 :     extern bool js_InternNonIntElementIdSlow(JSContext *, JSObject *,
     117                 :                                              const js::Value &,
     118                 :                                              jsid *, js::Value *);
     119         1520714 :     if (idval.isObject())
     120            3479 :         return js_InternNonIntElementIdSlow(cx, obj, idval, idp, vp);
     121                 : #endif
     122                 : 
     123                 :     JSAtom *atom;
     124         1517235 :     if (js_ValueToAtom(cx, idval, &atom)) {
     125         1517235 :         *idp = ATOM_TO_JSID(atom);
     126         1517235 :         vp->setString(atom);
     127         1517235 :         return true;
     128                 :     }
     129               0 :     return false;
     130                 : }
     131                 : 
     132                 : inline bool
     133                 : js_Int32ToId(JSContext* cx, int32_t index, jsid* id)
     134                 : {
     135                 :     if (INT_FITS_IN_JSID(index)) {
     136                 :         *id = INT_TO_JSID(index);
     137                 :         return true;
     138                 :     }
     139                 : 
     140                 :     JSString* str = js_NumberToString(cx, index);
     141                 :     if (!str)
     142                 :         return false;
     143                 : 
     144                 :     return js_ValueToStringId(cx, js::StringValue(str), id);
     145                 : }
     146                 : 
     147                 : namespace js {
     148                 : 
     149                 : /*
     150                 :  * Write out character representing |index| to the memory just before |end|.
     151                 :  * Thus |*end| is not touched, but |end[-1]| and earlier are modified as
     152                 :  * appropriate.  There must be at least js::UINT32_CHAR_BUFFER_LENGTH elements
     153                 :  * before |end| to avoid buffer underflow.  The start of the characters written
     154                 :  * is returned and is necessarily before |end|.
     155                 :  */
     156                 : template <typename T>
     157                 : inline mozilla::RangedPtr<T>
     158        43065053 : BackfillIndexInCharBuffer(uint32_t index, mozilla::RangedPtr<T> end)
     159                 : {
     160                 : #ifdef DEBUG
     161                 :     /*
     162                 :      * Assert that the buffer we're filling will hold as many characters as we
     163                 :      * could write out, by dereferencing the index that would hold the most
     164                 :      * significant digit.
     165                 :      */
     166        43065053 :     (void) *(end - UINT32_CHAR_BUFFER_LENGTH);
     167                 : #endif
     168                 : 
     169       276448875 :     do {
     170       276448875 :         uint32_t next = index / 10, digit = index % 10;
     171       276448875 :         *--end = '0' + digit;
     172       276448875 :         index = next;
     173                 :     } while (index > 0);
     174                 : 
     175        43065053 :     return end;
     176                 : }
     177                 : 
     178                 : inline bool
     179        34064401 : IndexToId(JSContext *cx, uint32_t index, jsid *idp)
     180                 : {
     181        34064401 :     if (index <= JSID_INT_MAX) {
     182        34064168 :         *idp = INT_TO_JSID(index);
     183        34064168 :         return true;
     184                 :     }
     185                 : 
     186                 :     extern bool IndexToIdSlow(JSContext *cx, uint32_t index, jsid *idp);
     187             233 :     return IndexToIdSlow(cx, index, idp);
     188                 : }
     189                 : 
     190                 : static JS_ALWAYS_INLINE JSFlatString *
     191        56075160 : IdToString(JSContext *cx, jsid id)
     192                 : {
     193        56075160 :     if (JSID_IS_STRING(id))
     194        14516165 :         return JSID_TO_ATOM(id);
     195                 : 
     196                 :     JSString *str;
     197        41558995 :      if (JS_LIKELY(JSID_IS_INT(id)))
     198        41558959 :         str = js_IntToString(cx, JSID_TO_INT(id));
     199                 :     else
     200              36 :         str = ToStringSlow(cx, IdToValue(id));    
     201                 : 
     202        41558995 :     if (!str)
     203               9 :         return NULL;
     204        41558986 :     return str->ensureFlat(cx);
     205                 : }
     206                 : 
     207                 : inline
     208         4231234 : AtomHasher::Lookup::Lookup(const JSAtom *atom)
     209         4231234 :   : chars(atom->chars()), length(atom->length()), atom(atom)
     210         4231234 : {}
     211                 : 
     212                 : inline bool
     213        57808970 : AtomHasher::match(const AtomStateEntry &entry, const Lookup &lookup)
     214                 : {
     215        57808970 :     JSAtom *key = entry.asPtr();
     216        57808970 :     if (lookup.atom)
     217         4231234 :         return lookup.atom == key;
     218        53577736 :     if (key->length() != lookup.length)
     219            9784 :         return false;
     220        53567952 :     return PodEqual(key->chars(), lookup.chars, lookup.length);
     221                 : }
     222                 : 
     223                 : } // namespace js
     224                 : 
     225                 : #endif /* jsatominlines_h___ */

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