The Tor Browser: layout/style/nsCSSKeywords.cpp@925c144e1f1f

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /* keywords used within CSS property values */

     8 #include "nsCSSKeywords.h"

     9 #include "nsString.h"

    10 #include "nsStaticNameTable.h"

    12 // required to make the symbol external, so that TestCSSPropertyLookup.cpp can link with it

    13 extern const char* const kCSSRawKeywords[];

    15 // define an array of all CSS keywords

    16 #define CSS_KEY(_name,_id) #_name,

    17 const char* const kCSSRawKeywords[] = {

    18 #include "nsCSSKeywordList.h"

    19 };

    20 #undef CSS_KEY

    22 static int32_t gKeywordTableRefCount;

    23 static nsStaticCaseInsensitiveNameTable* gKeywordTable;

    25 void

    26 nsCSSKeywords::AddRefTable(void)

    27 {

    28   if (0 == gKeywordTableRefCount++) {

    29     NS_ASSERTION(!gKeywordTable, "pre existing array!");

    30     gKeywordTable = new nsStaticCaseInsensitiveNameTable();

    31     if (gKeywordTable) {

    32 #ifdef DEBUG

    33     {

    34       // let's verify the table...

    35       int32_t index = 0;

    36       for (; index < eCSSKeyword_COUNT && kCSSRawKeywords[index]; ++index) {

    37         nsAutoCString temp1(kCSSRawKeywords[index]);

    38         nsAutoCString temp2(kCSSRawKeywords[index]);

    39         ToLowerCase(temp1);

    40         NS_ASSERTION(temp1.Equals(temp2), "upper case char in table");

    41         NS_ASSERTION(-1 == temp1.FindChar('_'), "underscore char in table");

    42       }

    43       NS_ASSERTION(index == eCSSKeyword_COUNT, "kCSSRawKeywords and eCSSKeyword_COUNT are out of sync");

    44     }

    45 #endif

    46       gKeywordTable->Init(kCSSRawKeywords, eCSSKeyword_COUNT);

    47     }

    48   }

    49 }

    51 void

    52 nsCSSKeywords::ReleaseTable(void)

    53 {

    54   if (0 == --gKeywordTableRefCount) {

    55     if (gKeywordTable) {

    56       delete gKeywordTable;

    57       gKeywordTable = nullptr;

    58     }

    59   }

    60 }

    62 nsCSSKeyword

    63 nsCSSKeywords::LookupKeyword(const nsACString& aKeyword)

    64 {

    65   NS_ASSERTION(gKeywordTable, "no lookup table, needs addref");

    66   if (gKeywordTable) {

    67     return nsCSSKeyword(gKeywordTable->Lookup(aKeyword));

    68   }

    69   return eCSSKeyword_UNKNOWN;

    70 }

    72 nsCSSKeyword

    73 nsCSSKeywords::LookupKeyword(const nsAString& aKeyword)

    74 {

    75   NS_ASSERTION(gKeywordTable, "no lookup table, needs addref");

    76   if (gKeywordTable) {

    77     return nsCSSKeyword(gKeywordTable->Lookup(aKeyword));

    78   }

    79   return eCSSKeyword_UNKNOWN;

    80 }

    82 const nsAFlatCString&

    83 nsCSSKeywords::GetStringValue(nsCSSKeyword aKeyword)

    84 {

    85   NS_ASSERTION(gKeywordTable, "no lookup table, needs addref");

    86   NS_ASSERTION(0 <= aKeyword && aKeyword < eCSSKeyword_COUNT, "out of range");

    87   if (gKeywordTable) {

    88     return gKeywordTable->GetStringValue(int32_t(aKeyword));

    89   } else {

    90     static nsDependentCString kNullStr("");

    91     return kNullStr;

    92   }

    93 }

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