8 from in_file import InFile
16 #ifndef %(class_name)s_h
17 #define %(class_name)s_h
19 #include "core/css/parser/CSSParserMode.h"
25 %(value_keyword_enums)s
28 const int numCSSValueKeywords = %(value_keywords_count)d;
29 const size_t maxCSSValueKeywordLength = %(max_value_keyword_length)d;
31 const char* getValueName(unsigned short id);
32 bool isValueAllowedInMode(unsigned short id, CSSParserMode mode);
36 #endif // %(class_name)s_h
44 #include "%(class_name)s.h"
45 #include "core/css/HashTools.h"
49 static const char valueListStringPool[] = {
51 %(value_keyword_strings)s
54 static const unsigned short valueListStringOffsets[] = {
55 %(value_keyword_offsets)s
65 %%define class-name %(class_name)sHash
66 %%define lookup-function-name findValueImpl
67 %%define hash-function-name value_hash_function
68 %%define slot-name nameOffset
69 %%define word-array-name value_word_list
73 %(value_keyword_to_enum_map)s
75 const Value* findValue(register const char* str, register unsigned int len)
77 return CSSValueKeywordsHash::findValueImpl(str, len);
80 const char* getValueName(unsigned short id)
82 if (id >= numCSSValueKeywords || id <= 0)
84 return valueListStringPool + valueListStringOffsets[id];
87 bool isValueAllowedInMode(unsigned short id, CSSParserMode mode)
90 %(ua_sheet_mode_values_keywords)s
91 return isUASheetBehavior(mode);
92 %(quirks_mode_or_ua_sheet_mode_values_keywords)s
93 return isUASheetBehavior(mode) || isQuirksModeBehavior(mode);
103 class CSSValueKeywordsWriter(in_generator.Writer):
104 class_name = "CSSValueKeywords"
109 def __init__(self, file_paths):
110 in_generator.Writer.__init__(self, file_paths)
111 self._outputs = {(self.class_name + ".h"): self.generate_header,
112 (self.class_name + ".cpp"): self.generate_implementation,
115 self._value_keywords = self.in_file.name_dictionaries
116 first_property_id = 1
117 for offset, property in enumerate(self._value_keywords):
118 property['name'] = property['name'].lower()
119 property['enum_name'] = self._enum_name_from_value_keyword(property['name'])
120 property['enum_value'] = first_property_id + offset
121 if property['name'].startswith('-internal-'):
122 assert property['mode'] is None, 'Can\'t specify mode for value keywords with the prefix "-internal-".'
123 property['mode'] = 'UASheet'
125 assert property['mode'] != 'UASheet', 'UASheet mode only value keywords should have the prefix "-internal-".'
127 def _enum_name_from_value_keyword(self, value_keyword):
128 return "CSSValue" + "".join(w.capitalize() for w in value_keyword.split("-"))
130 def _enum_declaration(self, property):
131 return " %(enum_name)s = %(enum_value)s," % property
133 def _case_value_keyword(self, property):
134 return "case %(enum_name)s:" % property
136 def generate_header(self):
137 enum_enties = map(self._enum_declaration, [{'enum_name': 'CSSValueInvalid', 'enum_value': 0}] + self._value_keywords)
138 return HEADER_TEMPLATE % {
139 'license': license.license_for_generated_cpp(),
140 'class_name': self.class_name,
141 'value_keyword_enums': "\n".join(enum_enties),
142 'value_keywords_count': len(enum_enties),
143 'max_value_keyword_length': reduce(max, map(len, map(lambda property: property['name'], self._value_keywords))),
146 def _value_keywords_with_mode(self, mode):
147 return filter(lambda property: property['mode'] == mode, self._value_keywords)
149 def generate_implementation(self):
150 keyword_offsets = [0]
152 for keyword in self._value_keywords:
153 keyword_offsets.append(current_offset)
154 current_offset += len(keyword["name"]) + 1
156 gperf_input = GPERF_TEMPLATE % {
157 'license': license.license_for_generated_cpp(),
158 'class_name': self.class_name,
159 'value_keyword_strings': '\n'.join(map(lambda property: ' "%(name)s\\0"' % property, self._value_keywords)),
160 'value_keyword_offsets': '\n'.join(map(lambda offset: ' %d,' % offset, keyword_offsets)),
161 'value_keyword_to_enum_map': '\n'.join(map(lambda property: '%(name)s, %(enum_name)s' % property, self._value_keywords)),
162 'ua_sheet_mode_values_keywords': '\n '.join(map(self._case_value_keyword, self._value_keywords_with_mode('UASheet'))),
163 'quirks_mode_or_ua_sheet_mode_values_keywords': '\n '.join(map(self._case_value_keyword, self._value_keywords_with_mode('QuirksOrUASheet'))),
165 # FIXME: If we could depend on Python 2.7, we would use subprocess.check_output
166 gperf_args = [self.gperf_path, '--key-positions=*', '-P', '-n']
167 gperf_args.extend(['-m', '50']) # Pick best of 50 attempts.
168 gperf_args.append('-D') # Allow duplicate hashes -> More compact code.
169 gperf = subprocess.Popen(gperf_args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True)
170 return gperf.communicate(gperf_input)[0]
173 if __name__ == "__main__":
174 in_generator.Maker(CSSValueKeywordsWriter).main(sys.argv)