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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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1159 extension_(extension), | 1159 extension_(extension), |
1160 factory_(factory), | 1160 factory_(factory), |
1161 log_(log), | 1161 log_(log), |
1162 is_pre_parsing_(is_pre_parsing), | 1162 is_pre_parsing_(is_pre_parsing), |
1163 pre_data_(pre_data) { | 1163 pre_data_(pre_data) { |
1164 } | 1164 } |
1165 | 1165 |
1166 | 1166 |
1167 bool Parser::PreParseProgram(Handle<String> source, | 1167 bool Parser::PreParseProgram(Handle<String> source, |
1168 unibrow::CharacterStream* stream) { | 1168 unibrow::CharacterStream* stream) { |
1169 HistogramTimerScope timer(&Counters::pre_parse); | 1169 HistogramTimerScope timer(&COUNTER(pre_parse)); |
1170 AssertNoZoneAllocation assert_no_zone_allocation; | 1170 AssertNoZoneAllocation assert_no_zone_allocation; |
1171 AssertNoAllocation assert_no_allocation; | 1171 AssertNoAllocation assert_no_allocation; |
1172 NoHandleAllocation no_handle_allocation; | 1172 NoHandleAllocation no_handle_allocation; |
1173 scanner_.Init(source, stream, 0); | 1173 scanner_.Init(source, stream, 0); |
1174 ASSERT(target_stack_ == NULL); | 1174 ASSERT(target_stack_ == NULL); |
1175 mode_ = PARSE_EAGERLY; | 1175 mode_ = PARSE_EAGERLY; |
1176 DummyScope top_scope; | 1176 DummyScope top_scope; |
1177 LexicalScope scope(this, &top_scope); | 1177 LexicalScope scope(this, &top_scope); |
1178 TemporaryScope temp_scope(this); | 1178 TemporaryScope temp_scope(this); |
1179 ZoneListWrapper<Statement> processor; | 1179 ZoneListWrapper<Statement> processor; |
1180 bool ok = true; | 1180 bool ok = true; |
1181 ParseSourceElements(&processor, Token::EOS, &ok); | 1181 ParseSourceElements(&processor, Token::EOS, &ok); |
1182 return !scanner().stack_overflow(); | 1182 return !scanner().stack_overflow(); |
1183 } | 1183 } |
1184 | 1184 |
1185 | 1185 |
1186 FunctionLiteral* Parser::ParseProgram(Handle<String> source, | 1186 FunctionLiteral* Parser::ParseProgram(Handle<String> source, |
1187 unibrow::CharacterStream* stream, | 1187 unibrow::CharacterStream* stream, |
1188 bool in_global_context) { | 1188 bool in_global_context) { |
1189 CompilationZoneScope zone_scope(DONT_DELETE_ON_EXIT); | 1189 CompilationZoneScope zone_scope(DONT_DELETE_ON_EXIT); |
1190 | 1190 |
1191 HistogramTimerScope timer(&Counters::parse); | 1191 HistogramTimerScope timer(&COUNTER(parse)); |
1192 Counters::total_parse_size.Increment(source->length()); | 1192 INCREMENT_COUNTER(total_parse_size, source->length()); |
1193 | 1193 |
1194 // Initialize parser state. | 1194 // Initialize parser state. |
1195 source->TryFlattenIfNotFlat(); | 1195 source->TryFlattenIfNotFlat(); |
1196 scanner_.Init(source, stream, 0); | 1196 scanner_.Init(source, stream, 0); |
1197 ASSERT(target_stack_ == NULL); | 1197 ASSERT(target_stack_ == NULL); |
1198 | 1198 |
1199 // Compute the parsing mode. | 1199 // Compute the parsing mode. |
1200 mode_ = FLAG_lazy ? PARSE_LAZILY : PARSE_EAGERLY; | 1200 mode_ = FLAG_lazy ? PARSE_LAZILY : PARSE_EAGERLY; |
1201 if (allow_natives_syntax_ || extension_ != NULL) mode_ = PARSE_EAGERLY; | 1201 if (allow_natives_syntax_ || extension_ != NULL) mode_ = PARSE_EAGERLY; |
1202 | 1202 |
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1239 if (result == NULL) zone_scope.DeleteOnExit(); | 1239 if (result == NULL) zone_scope.DeleteOnExit(); |
1240 return result; | 1240 return result; |
1241 } | 1241 } |
1242 | 1242 |
1243 | 1243 |
1244 FunctionLiteral* Parser::ParseLazy(Handle<String> source, | 1244 FunctionLiteral* Parser::ParseLazy(Handle<String> source, |
1245 Handle<String> name, | 1245 Handle<String> name, |
1246 int start_position, | 1246 int start_position, |
1247 bool is_expression) { | 1247 bool is_expression) { |
1248 CompilationZoneScope zone_scope(DONT_DELETE_ON_EXIT); | 1248 CompilationZoneScope zone_scope(DONT_DELETE_ON_EXIT); |
1249 HistogramTimerScope timer(&Counters::parse_lazy); | 1249 HistogramTimerScope timer(&COUNTER(parse_lazy)); |
1250 source->TryFlattenIfNotFlat(); | 1250 source->TryFlattenIfNotFlat(); |
1251 Counters::total_parse_size.Increment(source->length()); | 1251 INCREMENT_COUNTER(total_parse_size, source->length()); |
1252 SafeStringInputBuffer buffer(source.location()); | 1252 SafeStringInputBuffer buffer(source.location()); |
1253 | 1253 |
1254 // Initialize parser state. | 1254 // Initialize parser state. |
1255 scanner_.Init(source, &buffer, start_position); | 1255 scanner_.Init(source, &buffer, start_position); |
1256 ASSERT(target_stack_ == NULL); | 1256 ASSERT(target_stack_ == NULL); |
1257 mode_ = PARSE_EAGERLY; | 1257 mode_ = PARSE_EAGERLY; |
1258 | 1258 |
1259 // Place holder for the result. | 1259 // Place holder for the result. |
1260 FunctionLiteral* result = NULL; | 1260 FunctionLiteral* result = NULL; |
1261 | 1261 |
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3603 bool is_lazily_compiled = | 3603 bool is_lazily_compiled = |
3604 mode() == PARSE_LAZILY && top_scope_->HasTrivialOuterContext(); | 3604 mode() == PARSE_LAZILY && top_scope_->HasTrivialOuterContext(); |
3605 | 3605 |
3606 int materialized_literal_count; | 3606 int materialized_literal_count; |
3607 int expected_property_count; | 3607 int expected_property_count; |
3608 bool only_simple_this_property_assignments; | 3608 bool only_simple_this_property_assignments; |
3609 Handle<FixedArray> this_property_assignments; | 3609 Handle<FixedArray> this_property_assignments; |
3610 if (is_lazily_compiled && pre_data() != NULL) { | 3610 if (is_lazily_compiled && pre_data() != NULL) { |
3611 FunctionEntry entry = pre_data()->GetFunctionEnd(start_pos); | 3611 FunctionEntry entry = pre_data()->GetFunctionEnd(start_pos); |
3612 int end_pos = entry.end_pos(); | 3612 int end_pos = entry.end_pos(); |
3613 Counters::total_preparse_skipped.Increment(end_pos - start_pos); | 3613 INCREMENT_COUNTER(total_preparse_skipped, end_pos - start_pos); |
3614 scanner_.SeekForward(end_pos); | 3614 scanner_.SeekForward(end_pos); |
3615 materialized_literal_count = entry.literal_count(); | 3615 materialized_literal_count = entry.literal_count(); |
3616 expected_property_count = entry.property_count(); | 3616 expected_property_count = entry.property_count(); |
3617 only_simple_this_property_assignments = false; | 3617 only_simple_this_property_assignments = false; |
3618 this_property_assignments = Factory::empty_fixed_array(); | 3618 this_property_assignments = Factory::empty_fixed_array(); |
3619 } else { | 3619 } else { |
3620 ParseSourceElements(&body, Token::RBRACE, CHECK_OK); | 3620 ParseSourceElements(&body, Token::RBRACE, CHECK_OK); |
3621 materialized_literal_count = temp_scope.materialized_literal_count(); | 3621 materialized_literal_count = temp_scope.materialized_literal_count(); |
3622 expected_property_count = temp_scope.expected_property_count(); | 3622 expected_property_count = temp_scope.expected_property_count(); |
3623 only_simple_this_property_assignments = | 3623 only_simple_this_property_assignments = |
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4787 start_position, | 4787 start_position, |
4788 is_expression); | 4788 is_expression); |
4789 return result; | 4789 return result; |
4790 } | 4790 } |
4791 | 4791 |
4792 | 4792 |
4793 #undef NEW | 4793 #undef NEW |
4794 | 4794 |
4795 | 4795 |
4796 } } // namespace v8::internal | 4796 } } // namespace v8::internal |
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