| # Copyright (C) 2010 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. |
| |
| import collections |
| import itertools |
| import re |
| |
| |
| _license_header = """/* |
| * Copyright (C) 2010 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. |
| */ |
| |
| """ |
| |
| class MessageReceiver(object): |
| def __init__(self, name, messages, condition): |
| self.name = name |
| self.messages = messages |
| self.condition = condition |
| |
| def iterparameters(self): |
| return itertools.chain((parameter for message in self.messages for parameter in message.parameters), |
| (reply_parameter for message in self.messages if message.reply_parameters for reply_parameter in message.reply_parameters)) |
| |
| @classmethod |
| def parse(cls, file): |
| destination = None |
| messages = [] |
| condition = None |
| master_condition = None |
| for line in file: |
| match = re.search(r'messages -> ([A-Za-z_0-9]+) {', line) |
| if match: |
| if condition: |
| master_condition = condition |
| condition = None |
| destination = match.group(1) |
| continue |
| if line.startswith('#'): |
| if line.startswith('#if '): |
| condition = line.rstrip()[4:] |
| elif line.startswith('#endif'): |
| condition = None |
| continue |
| match = re.search(r'([A-Za-z_0-9]+)\((.*?)\)(?:(?:\s+->\s+)\((.*?)\)(?:\s+(.*))?)?', line) |
| if match: |
| name, parameters_string, reply_parameters_string, attributes_string = match.groups() |
| if parameters_string: |
| parameters = parse_parameter_string(parameters_string) |
| else: |
| parameters = [] |
| |
| for parameter in parameters: |
| parameter.condition = condition |
| |
| if attributes_string: |
| attributes = frozenset(attributes_string.split()) |
| is_delayed = "Delayed" in attributes |
| dispatch_on_connection_queue = "DispatchOnConnectionQueue" in attributes |
| else: |
| is_delayed = False |
| dispatch_on_connection_queue = False |
| |
| if reply_parameters_string: |
| reply_parameters = parse_parameter_string(reply_parameters_string) |
| elif reply_parameters_string == '': |
| reply_parameters = [] |
| else: |
| reply_parameters = None |
| |
| messages.append(Message(name, parameters, reply_parameters, is_delayed, dispatch_on_connection_queue, condition)) |
| return MessageReceiver(destination, messages, master_condition) |
| |
| |
| class Message(object): |
| def __init__(self, name, parameters, reply_parameters, is_delayed, dispatch_on_connection_queue, condition): |
| self.name = name |
| self.parameters = parameters |
| self.reply_parameters = reply_parameters |
| if self.reply_parameters is not None: |
| self.is_delayed = is_delayed |
| self.dispatch_on_connection_queue = dispatch_on_connection_queue |
| self.condition = condition |
| if len(self.parameters) != 0: |
| self.is_variadic = parameter_type_is_variadic(self.parameters[-1].type) |
| else: |
| self.is_variadic = False |
| |
| def id(self): |
| return '%sID' % self.name |
| |
| |
| class Parameter(object): |
| def __init__(self, type, name, condition=None): |
| self.type = type |
| self.name = name |
| self.condition = condition |
| |
| |
| def parse_parameter_string(parameter_string): |
| return [Parameter(*type_and_name.rsplit(' ', 1)) for type_and_name in parameter_string.split(', ')] |
| |
| |
| def messages_header_filename(receiver): |
| return '%sMessages.h' % receiver.name |
| |
| |
| def surround_in_condition(string, condition): |
| if not condition: |
| return string |
| return '#if %s\n%s#endif\n' % (condition, string) |
| |
| |
| def messages_to_kind_enum(messages): |
| result = [] |
| result.append('enum Kind {\n') |
| result += [surround_in_condition(' %s,\n' % message.id(), message.condition) for message in messages] |
| result.append('};\n') |
| return ''.join(result) |
| |
| |
| def parameter_type_is_variadic(type): |
| variadic_types = frozenset([ |
| 'WebKit::InjectedBundleUserMessageEncoder', |
| 'WebKit::WebContextUserMessageEncoder', |
| ]) |
| |
| return type in variadic_types |
| |
| def function_parameter_type(type): |
| # Don't use references for built-in types. |
| builtin_types = frozenset([ |
| 'bool', |
| 'float', |
| 'double', |
| 'uint8_t', |
| 'uint16_t', |
| 'uint32_t', |
| 'uint64_t', |
| 'int8_t', |
| 'int16_t', |
| 'int32_t', |
| 'int64_t', |
| ]) |
| |
| if type in builtin_types: |
| return type |
| |
| return 'const %s&' % type |
| |
| |
| def reply_parameter_type(type): |
| return '%s&' % type |
| |
| |
| def arguments_type(parameters, parameter_type_function): |
| arguments_type = 'CoreIPC::Arguments%d' % len(parameters) |
| if len(parameters): |
| arguments_type = '%s<%s>' % (arguments_type, ', '.join(parameter_type_function(parameter.type) for parameter in parameters)) |
| return arguments_type |
| |
| |
| def base_class(message): |
| return arguments_type(message.parameters, function_parameter_type) |
| |
| |
| def reply_type(message): |
| return arguments_type(message.reply_parameters, reply_parameter_type) |
| |
| |
| def decode_type(message): |
| if message.is_variadic: |
| return arguments_type(message.parameters[:-1], reply_parameter_type) |
| return base_class(message) |
| |
| |
| def delayed_reply_type(message): |
| return arguments_type(message.reply_parameters, function_parameter_type) |
| |
| |
| def message_to_struct_declaration(message): |
| result = [] |
| function_parameters = [(function_parameter_type(x.type), x.name) for x in message.parameters] |
| result.append('struct %s : %s' % (message.name, base_class(message))) |
| result.append(' {\n') |
| result.append(' static const Kind messageID = %s;\n' % message.id()) |
| if message.reply_parameters != None: |
| if message.is_delayed: |
| send_parameters = [(function_parameter_type(x.type), x.name) for x in message.reply_parameters] |
| result.append(' struct DelayedReply : public ThreadSafeRefCounted<DelayedReply> {\n') |
| result.append(' DelayedReply(PassRefPtr<CoreIPC::Connection>, PassOwnPtr<CoreIPC::ArgumentEncoder>);\n') |
| result.append(' ~DelayedReply();\n') |
| result.append('\n') |
| result.append(' bool send(%s);\n' % ', '.join([' '.join(x) for x in send_parameters])) |
| result.append('\n') |
| result.append(' private:\n') |
| result.append(' RefPtr<CoreIPC::Connection> m_connection;\n') |
| result.append(' OwnPtr<CoreIPC::ArgumentEncoder> m_arguments;\n') |
| result.append(' };\n\n') |
| |
| result.append(' typedef %s Reply;\n' % reply_type(message)) |
| |
| result.append(' typedef %s DecodeType;\n' % decode_type(message)) |
| if len(function_parameters): |
| result.append(' %s%s(%s)' % (len(function_parameters) == 1 and 'explicit ' or '', message.name, ', '.join([' '.join(x) for x in function_parameters]))) |
| result.append('\n : %s(%s)\n' % (base_class(message), ', '.join([x[1] for x in function_parameters]))) |
| result.append(' {\n') |
| result.append(' }\n') |
| result.append('};\n') |
| return surround_in_condition(''.join(result), message.condition) |
| |
| |
| def struct_or_class(namespace, type): |
| structs = frozenset([ |
| 'WebCore::EditorCommandsForKeyEvent', |
| 'WebCore::CompositionUnderline', |
| 'WebCore::GrammarDetail', |
| 'WebCore::KeypressCommand', |
| 'WebCore::PluginInfo', |
| 'WebCore::PrintInfo', |
| 'WebCore::ViewportArguments', |
| 'WebCore::WindowFeatures', |
| 'WebKit::AttributedString', |
| 'WebKit::ContextMenuState', |
| 'WebKit::DictionaryPopupInfo', |
| 'WebKit::DrawingAreaInfo', |
| 'WebKit::EditorState', |
| 'WebKit::PlatformPopupMenuData', |
| 'WebKit::PluginProcessCreationParameters', |
| 'WebKit::PrintInfo', |
| 'WebKit::SecurityOriginData', |
| 'WebKit::TextCheckerState', |
| 'WebKit::WebNavigationDataStore', |
| 'WebKit::WebOpenPanelParameters::Data', |
| 'WebKit::WebPageCreationParameters', |
| 'WebKit::WebPreferencesStore', |
| 'WebKit::WebProcessCreationParameters', |
| ]) |
| |
| qualified_name = '%s::%s' % (namespace, type) |
| if qualified_name in structs: |
| return 'struct %s' % type |
| |
| return 'class %s' % type |
| |
| def forward_declarations_for_namespace(namespace, types): |
| result = [] |
| result.append('namespace %s {\n' % namespace) |
| result += [' %s;\n' % struct_or_class(namespace, x) for x in types] |
| result.append('}\n') |
| return ''.join(result) |
| |
| |
| def forward_declarations_and_headers(receiver): |
| types_by_namespace = collections.defaultdict(set) |
| |
| headers = set([ |
| '"Arguments.h"', |
| '"MessageID.h"', |
| ]) |
| |
| for message in receiver.messages: |
| if message.reply_parameters != None and message.is_delayed: |
| headers.add('<wtf/ThreadSafeRefCounted.h>') |
| types_by_namespace['CoreIPC'].update(['ArgumentEncoder', 'Connection']) |
| |
| for parameter in receiver.iterparameters(): |
| type = parameter.type |
| |
| if type.find('<') != -1: |
| # Don't forward declare class templates. |
| headers.update(headers_for_type(type)) |
| continue |
| |
| split = type.split('::') |
| |
| if len(split) == 2: |
| namespace = split[0] |
| inner_type = split[1] |
| types_by_namespace[namespace].add(inner_type) |
| elif len(split) > 2: |
| # We probably have a nested struct, which means we can't forward declare it. |
| # Include its header instead. |
| headers.update(headers_for_type(type)) |
| |
| forward_declarations = '\n'.join([forward_declarations_for_namespace(namespace, types) for (namespace, types) in sorted(types_by_namespace.items())]) |
| headers = ['#include %s\n' % header for header in sorted(headers)] |
| |
| return (forward_declarations, headers) |
| |
| def generate_messages_header(file): |
| receiver = MessageReceiver.parse(file) |
| header_guard = messages_header_filename(receiver).replace('.', '_') |
| |
| result = [] |
| |
| result.append(_license_header) |
| |
| result.append('#ifndef %s\n' % header_guard) |
| result.append('#define %s\n\n' % header_guard) |
| |
| if receiver.condition: |
| result.append('#if %s\n\n' % receiver.condition) |
| |
| forward_declarations, headers = forward_declarations_and_headers(receiver) |
| |
| result += headers |
| result.append('\n') |
| |
| result.append(forward_declarations) |
| result.append('\n') |
| |
| result.append('namespace Messages {\n\nnamespace %s {\n\n' % receiver.name) |
| result.append(messages_to_kind_enum(receiver.messages)) |
| result.append('\n') |
| result.append('\n'.join([message_to_struct_declaration(x) for x in receiver.messages])) |
| result.append('\n} // namespace %s\n\n} // namespace Messages\n' % receiver.name) |
| |
| result.append('\nnamespace CoreIPC {\n\n') |
| result.append('template<> struct MessageKindTraits<Messages::%s::Kind> {\n' % receiver.name) |
| result.append(' static const MessageClass messageClass = MessageClass%s;\n' % receiver.name) |
| result.append('};\n') |
| result.append('\n} // namespace CoreIPC\n') |
| |
| if receiver.condition: |
| result.append('\n#endif // %s\n' % receiver.condition) |
| |
| result.append('\n#endif // %s\n' % header_guard) |
| |
| return ''.join(result) |
| |
| |
| def handler_function(receiver, message): |
| if message.name.find('URL') == 0: |
| return '%s::%s' % (receiver.name, 'url' + message.name[3:]) |
| return '%s::%s' % (receiver.name, message.name[0].lower() + message.name[1:]) |
| |
| |
| def async_case_statement(receiver, message): |
| dispatch_function = 'handleMessage' |
| if message.is_variadic: |
| dispatch_function += 'Variadic' |
| |
| result = [] |
| result.append(' case Messages::%s::%s:\n' % (receiver.name, message.id())) |
| result.append(' CoreIPC::%s<Messages::%s::%s>(arguments, this, &%s);\n' % (dispatch_function, receiver.name, message.name, handler_function(receiver, message))) |
| result.append(' return;\n') |
| return surround_in_condition(''.join(result), message.condition) |
| |
| |
| def sync_case_statement(receiver, message): |
| dispatch_function = 'handleMessage' |
| if message.is_delayed: |
| dispatch_function += 'Delayed' |
| if message.is_variadic: |
| dispatch_function += 'Variadic' |
| |
| result = [] |
| result.append(' case Messages::%s::%s:\n' % (receiver.name, message.id())) |
| result.append(' CoreIPC::%s<Messages::%s::%s>(%sarguments, reply, this, &%s);\n' % (dispatch_function, receiver.name, message.name, 'connection, ' if message.is_delayed else '', handler_function(receiver, message))) |
| |
| if message.is_delayed: |
| result.append(' return CoreIPC::ManualReply;\n') |
| else: |
| result.append(' return CoreIPC::AutomaticReply;\n') |
| |
| return surround_in_condition(''.join(result), message.condition) |
| |
| |
| def argument_coder_headers_for_type(type): |
| # Check for Vector. |
| match = re.search(r'Vector<(.+)>', type) |
| if match: |
| element_type = match.groups()[0].strip() |
| return ['"ArgumentCoders.h"'] + argument_coder_headers_for_type(element_type) |
| |
| special_cases = { |
| 'WTF::String': '"ArgumentCoders.h"', |
| 'WebKit::InjectedBundleUserMessageEncoder': '"InjectedBundleUserMessageCoders.h"', |
| 'WebKit::WebContextUserMessageEncoder': '"WebContextUserMessageCoders.h"', |
| } |
| |
| if type in special_cases: |
| return [special_cases[type]] |
| |
| split = type.split('::') |
| if len(split) < 2: |
| return [] |
| if split[0] == 'WebCore': |
| return ['"WebCoreArgumentCoders.h"'] |
| |
| return [] |
| |
| |
| def headers_for_type(type): |
| # Check for Vector. |
| match = re.search(r'Vector<(.+)>', type) |
| if match: |
| element_type = match.groups()[0].strip() |
| return ['<wtf/Vector.h>'] + headers_for_type(element_type) |
| |
| special_cases = { |
| 'WTF::String': '<wtf/text/WTFString.h>', |
| 'WebCore::CompositionUnderline': '<WebCore/Editor.h>', |
| 'WebCore::GrammarDetail': '<WebCore/TextCheckerClient.h>', |
| 'WebCore::KeypressCommand': '<WebCore/KeyboardEvent.h>', |
| 'WebCore::PluginInfo': '<WebCore/PluginData.h>', |
| 'WebCore::TextCheckingResult': '<WebCore/TextCheckerClient.h>', |
| 'WebKit::WebGestureEvent': '"WebEvent.h"', |
| 'WebKit::WebKeyboardEvent': '"WebEvent.h"', |
| 'WebKit::WebMouseEvent': '"WebEvent.h"', |
| 'WebKit::WebTouchEvent': '"WebEvent.h"', |
| 'WebKit::WebWheelEvent': '"WebEvent.h"', |
| } |
| if type in special_cases: |
| return [special_cases[type]] |
| |
| # We assume that we must include a header for a type iff it has a scope |
| # resolution operator (::). |
| split = type.split('::') |
| if len(split) < 2: |
| return [] |
| if split[0] == 'WebKit' or split[0] == 'CoreIPC': |
| return ['"%s.h"' % split[1]] |
| return ['<%s/%s.h>' % tuple(split)] |
| |
| |
| def generate_message_handler(file): |
| receiver = MessageReceiver.parse(file) |
| headers = { |
| '"%s"' % messages_header_filename(receiver): None, |
| '"HandleMessage.h"': None, |
| '"ArgumentDecoder.h"': None, |
| } |
| |
| type_conditions = {} |
| for parameter in receiver.iterparameters(): |
| type = parameter.type |
| condition = parameter.condition |
| |
| if type in type_conditions: |
| if not type_conditions[type]: |
| condition = type_conditions[type] |
| else: |
| if not condition: |
| type_conditions[type] = condition |
| else: |
| type_conditions[type] = condition |
| |
| argument_encoder_headers = argument_coder_headers_for_type(parameter.type) |
| if argument_encoder_headers: |
| for header in argument_encoder_headers: |
| headers[header] = condition |
| continue |
| |
| type_headers = headers_for_type(type) |
| for header in type_headers: |
| headers[header] = condition |
| |
| for message in receiver.messages: |
| if message.reply_parameters is not None: |
| for reply_parameter in message.reply_parameters: |
| type = reply_parameter.type |
| argument_encoder_headers = argument_coder_headers_for_type(type) |
| if argument_encoder_headers: |
| for header in argument_encoder_headers: |
| headers[header] = message.condition |
| continue |
| |
| type_headers = headers_for_type(type) |
| for header in type_headers: |
| headers[header] = message.condition |
| |
| result = [] |
| |
| result.append(_license_header) |
| result.append('#include "config.h"\n') |
| result.append('\n') |
| |
| if receiver.condition: |
| result.append('#if %s\n\n' % receiver.condition) |
| |
| result.append('#include "%s.h"\n\n' % receiver.name) |
| for headercondition in sorted(headers): |
| if headers[headercondition]: |
| result.append('#if %s\n' % headers[headercondition]) |
| result += ['#include %s\n' % headercondition] |
| result.append('#endif\n') |
| else: |
| result += ['#include %s\n' % headercondition] |
| result.append('\n') |
| |
| sync_delayed_messages = [] |
| for message in receiver.messages: |
| if message.reply_parameters != None and message.is_delayed: |
| sync_delayed_messages.append(message) |
| |
| if sync_delayed_messages: |
| result.append('namespace Messages {\n\nnamespace %s {\n\n' % receiver.name) |
| |
| for message in sync_delayed_messages: |
| send_parameters = [(function_parameter_type(x.type), x.name) for x in message.reply_parameters] |
| |
| if message.condition: |
| result.append('#if %s\n\n' % message.condition) |
| |
| result.append('%s::DelayedReply::DelayedReply(PassRefPtr<CoreIPC::Connection> connection, PassOwnPtr<CoreIPC::ArgumentEncoder> arguments)\n' % message.name) |
| result.append(' : m_connection(connection)\n') |
| result.append(' , m_arguments(arguments)\n') |
| result.append('{\n') |
| result.append('}\n') |
| result.append('\n') |
| result.append('%s::DelayedReply::~DelayedReply()\n' % message.name) |
| result.append('{\n') |
| result.append(' ASSERT(!m_connection);\n') |
| result.append('}\n') |
| result.append('\n') |
| result.append('bool %s::DelayedReply::send(%s)\n' % (message.name, ', '.join([' '.join(x) for x in send_parameters]))) |
| result.append('{\n') |
| result.append(' ASSERT(m_arguments);\n') |
| result += [' m_arguments->encode(%s);\n' % x.name for x in message.reply_parameters] |
| result.append(' bool result = m_connection->sendSyncReply(m_arguments.release());\n') |
| result.append(' m_connection = nullptr;\n') |
| result.append(' return result;\n') |
| result.append('}\n') |
| result.append('\n') |
| |
| if message.condition: |
| result.append('#endif\n\n') |
| |
| result.append('} // namespace %s\n\n} // namespace Messages\n\n' % receiver.name) |
| |
| result.append('namespace WebKit {\n\n') |
| |
| async_messages = [] |
| sync_messages = [] |
| for message in receiver.messages: |
| if message.reply_parameters is not None: |
| sync_messages.append(message) |
| else: |
| async_messages.append(message) |
| |
| if async_messages: |
| result.append('void %s::didReceive%sMessage(CoreIPC::Connection*, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments)\n' % (receiver.name, receiver.name)) |
| result.append('{\n') |
| result.append(' switch (messageID.get<Messages::%s::Kind>()) {\n' % receiver.name) |
| result += [async_case_statement(receiver, message) for message in async_messages] |
| result.append(' default:\n') |
| result.append(' break;\n') |
| result.append(' }\n\n') |
| result.append(' ASSERT_NOT_REACHED();\n') |
| result.append('}\n') |
| |
| if sync_messages: |
| result.append('\n') |
| result.append('CoreIPC::SyncReplyMode %s::didReceiveSync%sMessage(CoreIPC::Connection*%s, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments, CoreIPC::ArgumentEncoder* reply)\n' % (receiver.name, receiver.name, ' connection' if sync_delayed_messages else '')) |
| result.append('{\n') |
| result.append(' switch (messageID.get<Messages::%s::Kind>()) {\n' % receiver.name) |
| result += [sync_case_statement(receiver, message) for message in sync_messages] |
| result.append(' default:\n') |
| result.append(' break;\n') |
| result.append(' }\n\n') |
| result.append(' ASSERT_NOT_REACHED();\n') |
| result.append(' return CoreIPC::AutomaticReply;\n') |
| result.append('}\n') |
| |
| result.append('\n} // namespace WebKit\n') |
| |
| if receiver.condition: |
| result.append('\n#endif // %s\n' % receiver.condition) |
| |
| return ''.join(result) |
