makeSelectorPseudoElementsMap.py [plain text]
import os
import sys
def enumerablePseudoType(stringPseudoType):
output = ['CSSSelector::PseudoElement']
if stringPseudoType.endswith('('):
stringPseudoType = stringPseudoType[:-1]
webkitPrefix = '-webkit-'
if (stringPseudoType.startswith(webkitPrefix)):
stringPseudoType = stringPseudoType[len(webkitPrefix):]
khtmlPrefix = '-khtml-'
if (stringPseudoType.startswith(khtmlPrefix)):
stringPseudoType = stringPseudoType[len(khtmlPrefix):]
substring_start = 0
next_dash_position = stringPseudoType.find('-')
while (next_dash_position != -1):
output.append(stringPseudoType[substring_start].upper())
output.append(stringPseudoType[substring_start + 1:next_dash_position])
substring_start = next_dash_position + 1
next_dash_position = stringPseudoType.find('-', substring_start)
output.append(stringPseudoType[substring_start].upper())
output.append(stringPseudoType[substring_start + 1:])
return ''.join(output)
def expand_ifdef_condition(condition):
return condition.replace('(', '_').replace(')', '')
output_file = open('SelectorPseudoElementTypeMap.gperf', 'w')
output_file.write("""
%{
/*
* Copyright (C) 2014 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
// This file is automatically generated from SelectorPseudoTypeMap.in by makeprop, do not edit by hand.
#include "config.h"
#include "SelectorPseudoTypeMap.h"
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wunknown-pragmas"
#pragma clang diagnostic ignored "-Wdeprecated-register"
#pragma clang diagnostic ignored "-Wimplicit-fallthrough"
#endif
namespace WebCore {
struct SelectorPseudoTypeEntry {
const char* name;
CSSSelector::PseudoElementType type;
};
%}
%struct-type
%define initializer-suffix ,CSSSelector::PseudoElementUnknown
%define class-name SelectorPseudoElementTypeMapHash
%omit-struct-type
%language=C++
%readonly-tables
%global-table
%compare-strncmp
%enum
struct SelectorPseudoTypeEntry;
%%
""")
webcore_defines = [i.strip() for i in sys.argv[-1].split(' ')]
longest_keyword = 0
ignore_until_endif = False
input_file = open(sys.argv[1], 'r')
for line in input_file:
line = line.strip()
if not line:
continue
if line.startswith('#if '):
condition = line[4:].strip()
if expand_ifdef_condition(condition) not in webcore_defines:
ignore_until_endif = True
continue
if line.startswith('#endif'):
ignore_until_endif = False
continue
if ignore_until_endif:
continue
keyword_definition = line.split(',')
if len(keyword_definition) == 1:
keyword = keyword_definition[0].strip()
pseudo_element_enum_value = enumerablePseudoType(keyword)
else:
keyword = keyword_definition[0].strip()
pseudo_element_enum_value = "CSSSelector::" + keyword_definition[1].strip()
output_file.write('"%s", %s\n' % (keyword, pseudo_element_enum_value))
longest_keyword = max(longest_keyword, len(keyword))
output_file.write("""%%
static inline CSSSelector::PseudoElementType parsePseudoElementString(const LChar* characters, unsigned length)
{
if (const SelectorPseudoTypeEntry* entry = SelectorPseudoElementTypeMapHash::in_word_set(reinterpret_cast<const char*>(characters), length))
return entry->type;
return CSSSelector::PseudoElementUnknown;
}""")
output_file.write("""
static inline CSSSelector::PseudoElementType parsePseudoElementString(const UChar* characters, unsigned length)
{
const unsigned maxKeywordLength = %s;
LChar buffer[maxKeywordLength];
if (length > maxKeywordLength)
return CSSSelector::PseudoElementUnknown;
for (unsigned i = 0; i < length; ++i) {
UChar character = characters[i];
if (character & ~0xff)
return CSSSelector::PseudoElementUnknown;
buffer[i] = static_cast<LChar>(character);
}
return parsePseudoElementString(buffer, length);
}
""" % longest_keyword)
output_file.write("""
CSSSelector::PseudoElementType parsePseudoElementString(const StringImpl& pseudoTypeString)
{
if (pseudoTypeString.is8Bit())
return parsePseudoElementString(pseudoTypeString.characters8(), pseudoTypeString.length());
return parsePseudoElementString(pseudoTypeString.characters16(), pseudoTypeString.length());
}
} // namespace WebCore
#if defined(__clang__)
#pragma clang diagnostic pop
#endif
""")
output_file.close()
gperf_command = 'gperf'
if 'GPERF' in os.environ:
gperf_command = os.environ['GPERF']
gperf_return = os.system("%s --key-positions='*' -m 10 -s 2 SelectorPseudoElementTypeMap.gperf --output-file=SelectorPseudoElementTypeMap.cpp" % gperf_command)
if gperf_return != 0:
print("Error when generating SelectorPseudoElementTypeMap.cpp from SelectorPseudoElementTypeMap.gperf :(")
sys.exit(gperf_return)