1 # Copyright (C) 2013 Google Inc. All rights reserved. 2 # 3 # Redistribution and use in source and binary forms, with or without 4 # modification, are permitted provided that the following conditions are 5 # met: 6 # 7 # * Redistributions of source code must retain the above copyright 8 # notice, this list of conditions and the following disclaimer. 9 # * Redistributions in binary form must reproduce the above 10 # copyright notice, this list of conditions and the following disclaimer 11 # in the documentation and/or other materials provided with the 12 # distribution. 13 # * Neither the name of Google Inc. nor the names of its 14 # contributors may be used to endorse or promote products derived from 15 # this software without specific prior written permission. 16 # 17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 import os.path 30 import re 31 32 import in_generator 33 from in_generator import Maker 34 import license 35 36 37 HEADER_TEMPLATE = """%(license)s 38 39 #ifndef %(class_name)sHeaders_h 40 #define %(class_name)sHeaders_h 41 42 %(includes)s 43 44 #endif // %(class_name)sHeaders_h 45 """ 46 47 48 INTERFACES_HEADER_TEMPLATE = """%(license)s 49 50 #ifndef %(class_name)sInterfaces_h 51 #define %(class_name)sInterfaces_h 52 53 %(declare_conditional_macros)s 54 55 #define %(macro_style_name)s_INTERFACES_FOR_EACH(macro) \\ 56 \\ 57 %(unconditional_macros)s 58 \\ 59 %(conditional_macros)s 60 61 #endif // %(class_name)sInterfaces_h 62 """ 63 64 65 def _to_macro_style(name): 66 s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name) 67 return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).upper() 68 69 70 class Writer(in_generator.Writer): 71 def __init__(self, in_file_path, enabled_conditions): 72 super(Writer, self).__init__(in_file_path, enabled_conditions) 73 self.class_name = self.in_file.parameters['namespace'].strip('"') 74 self._entries_by_conditional = {} 75 self._unconditional_entries = [] 76 self._sort_entries_by_conditional() 77 self._outputs = {(self.class_name + "Headers.h"): self.generate_headers_header, 78 (self.class_name + "Interfaces.h"): self.generate_interfaces_header, 79 } 80 81 def _sort_entries_by_conditional(self): 82 unconditional_names = set() 83 for entry in self.in_file.name_dictionaries: 84 conditional = entry['Conditional'] 85 if not conditional: 86 name = self._class_name_for_entry(entry) 87 if name in unconditional_names: 88 continue 89 unconditional_names.add(name) 90 self._unconditional_entries.append(entry) 91 continue 92 for entry in self.in_file.name_dictionaries: 93 name = self._class_name_for_entry(entry) 94 if name in unconditional_names: 95 continue 96 conditional = entry['Conditional'] 97 if not conditional in self._entries_by_conditional: 98 self._entries_by_conditional[conditional] = [] 99 self._entries_by_conditional[conditional].append(entry) 100 101 def _class_name_for_entry(self, entry): 102 if entry['ImplementedAs']: 103 return entry['ImplementedAs'] 104 return os.path.basename(entry['name']) 105 106 def _headers_header_include_path(self, entry): 107 if entry['ImplementedAs']: 108 path = os.path.dirname(entry['name']) 109 if len(path): 110 path += '/' 111 path += entry['ImplementedAs'] 112 else: 113 path = entry['name'] 114 return path + '.h' 115 116 def _headers_header_includes(self, entries): 117 includes = dict() 118 for entry in entries: 119 class_name = self._class_name_for_entry(entry) 120 # Avoid duplicate includes. 121 if class_name in includes: 122 continue 123 include = '#include "%(path)s"\n#include "V8%(js_name)s.h"' % { 124 'path': self._headers_header_include_path(entry), 125 'js_name': os.path.basename(entry['name']), 126 } 127 includes[class_name] = self.wrap_with_condition(include, entry['Conditional']) 128 return includes.values() 129 130 def generate_headers_header(self): 131 return HEADER_TEMPLATE % { 132 'license': license.license_for_generated_cpp(), 133 'class_name': self.class_name, 134 'includes': '\n'.join(self._headers_header_includes(self.in_file.name_dictionaries)), 135 } 136 137 def _declare_one_conditional_macro(self, conditional, entries): 138 macro_name = '%(macro_style_name)s_INTERFACES_FOR_EACH_%(conditional)s' % { 139 'macro_style_name': _to_macro_style(self.class_name), 140 'conditional': conditional, 141 } 142 return self.wrap_with_condition("""#define %(macro_name)s(macro) \\ 143 %(declarations)s 144 145 #else 146 #define %(macro_name)s(macro)""" % { 147 'macro_name': macro_name, 148 'declarations': '\n'.join(sorted(set([ 149 ' macro(%(name)s) \\' % {'name': self._class_name_for_entry(entry)} 150 for entry in entries]))), 151 }, conditional) 152 153 def _declare_conditional_macros(self): 154 return '\n'.join([ 155 self._declare_one_conditional_macro(conditional, entries) 156 for conditional, entries in self._entries_by_conditional.items()]) 157 158 def _unconditional_macro(self, entry): 159 return ' macro(%(name)s) \\' % {'name': self._class_name_for_entry(entry)} 160 161 def _conditional_macros(self, conditional): 162 return ' %(macro_style_name)s_INTERFACES_FOR_EACH_%(conditional)s(macro) \\' % { 163 'macro_style_name': _to_macro_style(self.class_name), 164 'conditional': conditional, 165 } 166 167 def generate_interfaces_header(self): 168 return INTERFACES_HEADER_TEMPLATE % { 169 'license': license.license_for_generated_cpp(), 170 'class_name': self.class_name, 171 'macro_style_name': _to_macro_style(self.class_name), 172 'declare_conditional_macros': self._declare_conditional_macros(), 173 'unconditional_macros': '\n'.join(sorted(set(map(self._unconditional_macro, self._unconditional_entries)))), 174 'conditional_macros': '\n'.join(map(self._conditional_macros, self._entries_by_conditional.keys())), 175 } 176
