| #!/usr/bin/env python |
| |
| import os.path |
| import re |
| import subprocess |
| import sys |
| |
| from in_file import InFile |
| from name_utilities import upper_first_letter |
| import in_generator |
| import license |
| |
| |
| HEADER_TEMPLATE = """ |
| %(license)s |
| |
| #ifndef %(class_name)s_h |
| #define %(class_name)s_h |
| |
| #include "core/css/parser/CSSParserMode.h" |
| #include <string.h> |
| |
| namespace blink { |
| |
| enum CSSValueID { |
| %(value_keyword_enums)s |
| }; |
| |
| const int numCSSValueKeywords = %(value_keywords_count)d; |
| const size_t maxCSSValueKeywordLength = %(max_value_keyword_length)d; |
| |
| const char* getValueName(CSSValueID); |
| bool isValueAllowedInMode(unsigned short id, CSSParserMode mode); |
| |
| } // namespace blink |
| |
| #endif // %(class_name)s_h |
| """ |
| |
| GPERF_TEMPLATE = """ |
| %%{ |
| %(license)s |
| |
| #include "config.h" |
| #include "%(class_name)s.h" |
| #include "core/css/HashTools.h" |
| #include <string.h> |
| |
| namespace blink { |
| static const char valueListStringPool[] = { |
| %(value_keyword_strings)s |
| }; |
| |
| static const unsigned short valueListStringOffsets[] = { |
| %(value_keyword_offsets)s |
| }; |
| |
| %%} |
| %%struct-type |
| struct Value; |
| %%omit-struct-type |
| %%language=C++ |
| %%readonly-tables |
| %%compare-strncmp |
| %%define class-name %(class_name)sHash |
| %%define lookup-function-name findValueImpl |
| %%define hash-function-name value_hash_function |
| %%define slot-name nameOffset |
| %%define word-array-name value_word_list |
| %%pic |
| %%enum |
| %%%% |
| %(value_keyword_to_enum_map)s |
| %%%% |
| const Value* findValue(register const char* str, register unsigned int len) |
| { |
| return CSSValueKeywordsHash::findValueImpl(str, len); |
| } |
| |
| const char* getValueName(CSSValueID id) |
| { |
| ASSERT(id > 0 && id < numCSSValueKeywords); |
| return valueListStringPool + valueListStringOffsets[id - 1]; |
| } |
| |
| bool isValueAllowedInMode(unsigned short id, CSSParserMode mode) |
| { |
| switch (id) { |
| %(ua_sheet_mode_values_keywords)s |
| return isUASheetBehavior(mode); |
| %(quirks_mode_or_ua_sheet_mode_values_keywords)s |
| return isUASheetBehavior(mode) || isQuirksModeBehavior(mode); |
| default: |
| return true; |
| } |
| } |
| |
| } // namespace blink |
| """ |
| |
| |
| class CSSValueKeywordsWriter(in_generator.Writer): |
| class_name = "CSSValueKeywords" |
| defaults = { |
| 'mode': None, |
| } |
| |
| def __init__(self, file_paths): |
| in_generator.Writer.__init__(self, file_paths) |
| self._outputs = {(self.class_name + ".h"): self.generate_header, |
| (self.class_name + ".cpp"): self.generate_implementation, |
| } |
| |
| self._value_keywords = self.in_file.name_dictionaries |
| first_property_id = 1 |
| for offset, property in enumerate(self._value_keywords): |
| property['lower_name'] = property['name'].lower() |
| property['enum_name'] = self._enum_name_from_value_keyword(property['name']) |
| property['enum_value'] = first_property_id + offset |
| if property['name'].startswith('-internal-'): |
| assert property['mode'] is None, 'Can\'t specify mode for value keywords with the prefix "-internal-".' |
| property['mode'] = 'UASheet' |
| else: |
| assert property['mode'] != 'UASheet', 'UASheet mode only value keywords should have the prefix "-internal-".' |
| |
| def _enum_name_from_value_keyword(self, value_keyword): |
| return "CSSValue" + "".join(upper_first_letter(w) for w in value_keyword.split("-")) |
| |
| def _enum_declaration(self, property): |
| return " %(enum_name)s = %(enum_value)s," % property |
| |
| def _case_value_keyword(self, property): |
| return "case %(enum_name)s:" % property |
| |
| def generate_header(self): |
| enum_enties = map(self._enum_declaration, [{'enum_name': 'CSSValueInvalid', 'enum_value': 0}] + self._value_keywords) |
| return HEADER_TEMPLATE % { |
| 'license': license.license_for_generated_cpp(), |
| 'class_name': self.class_name, |
| 'value_keyword_enums': "\n".join(enum_enties), |
| 'value_keywords_count': len(enum_enties), |
| 'max_value_keyword_length': reduce(max, map(len, map(lambda property: property['name'], self._value_keywords))), |
| } |
| |
| def _value_keywords_with_mode(self, mode): |
| return filter(lambda property: property['mode'] == mode, self._value_keywords) |
| |
| def generate_implementation(self): |
| keyword_offsets = [] |
| current_offset = 0 |
| for keyword in self._value_keywords: |
| keyword_offsets.append(current_offset) |
| current_offset += len(keyword["name"]) + 1 |
| |
| gperf_input = GPERF_TEMPLATE % { |
| 'license': license.license_for_generated_cpp(), |
| 'class_name': self.class_name, |
| 'value_keyword_strings': '\n'.join(map(lambda property: ' "%(name)s\\0"' % property, self._value_keywords)), |
| 'value_keyword_offsets': '\n'.join(map(lambda offset: ' %d,' % offset, keyword_offsets)), |
| 'value_keyword_to_enum_map': '\n'.join('%(lower_name)s, %(enum_name)s' % keyword for keyword in self._value_keywords), |
| 'ua_sheet_mode_values_keywords': '\n '.join(map(self._case_value_keyword, self._value_keywords_with_mode('UASheet'))), |
| 'quirks_mode_or_ua_sheet_mode_values_keywords': '\n '.join(map(self._case_value_keyword, self._value_keywords_with_mode('QuirksOrUASheet'))), |
| } |
| # FIXME: If we could depend on Python 2.7, we would use subprocess.check_output |
| gperf_args = [self.gperf_path, '--key-positions=*', '-P', '-n'] |
| gperf_args.extend(['-m', '50']) # Pick best of 50 attempts. |
| gperf_args.append('-D') # Allow duplicate hashes -> More compact code. |
| gperf = subprocess.Popen(gperf_args, stdin=subprocess.PIPE, stdout=subprocess.PIPE, universal_newlines=True) |
| return gperf.communicate(gperf_input)[0] |
| |
| |
| if __name__ == "__main__": |
| in_generator.Maker(CSSValueKeywordsWriter).main(sys.argv) |