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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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643 // No cache entry found. Do pre-parsing, if it makes sense, and compile | 643 // No cache entry found. Do pre-parsing, if it makes sense, and compile |
644 // the script. | 644 // the script. |
645 // Building preparse data that is only used immediately after is only a | 645 // Building preparse data that is only used immediately after is only a |
646 // saving if we might skip building the AST for lazily compiled functions. | 646 // saving if we might skip building the AST for lazily compiled functions. |
647 // I.e., preparse data isn't relevant when the lazy flag is off, and | 647 // I.e., preparse data isn't relevant when the lazy flag is off, and |
648 // for small sources, odds are that there aren't many functions | 648 // for small sources, odds are that there aren't many functions |
649 // that would be compiled lazily anyway, so we skip the preparse step | 649 // that would be compiled lazily anyway, so we skip the preparse step |
650 // in that case too. | 650 // in that case too. |
651 | 651 |
652 // Create a script object describing the script to be compiled. | 652 // Create a script object describing the script to be compiled. |
653 Handle<Script> script = FACTORY->NewScript(source); | 653 Handle<Script> script = isolate->factory()->NewScript(source); |
654 if (natives == NATIVES_CODE) { | 654 if (natives == NATIVES_CODE) { |
655 script->set_type(Smi::FromInt(Script::TYPE_NATIVE)); | 655 script->set_type(Smi::FromInt(Script::TYPE_NATIVE)); |
656 } | 656 } |
657 if (!script_name.is_null()) { | 657 if (!script_name.is_null()) { |
658 script->set_name(*script_name); | 658 script->set_name(*script_name); |
659 script->set_line_offset(Smi::FromInt(line_offset)); | 659 script->set_line_offset(Smi::FromInt(line_offset)); |
660 script->set_column_offset(Smi::FromInt(column_offset)); | 660 script->set_column_offset(Smi::FromInt(column_offset)); |
661 } | 661 } |
662 | 662 |
663 script->set_data(script_data.is_null() ? HEAP->undefined_value() | 663 script->set_data(script_data.is_null() ? HEAP->undefined_value() |
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1048 | 1048 |
1049 Handle<SharedFunctionInfo> Compiler::BuildFunctionInfo(FunctionLiteral* literal, | 1049 Handle<SharedFunctionInfo> Compiler::BuildFunctionInfo(FunctionLiteral* literal, |
1050 Handle<Script> script) { | 1050 Handle<Script> script) { |
1051 // Precondition: code has been parsed and scopes have been analyzed. | 1051 // Precondition: code has been parsed and scopes have been analyzed. |
1052 CompilationInfoWithZone info(script); | 1052 CompilationInfoWithZone info(script); |
1053 info.SetFunction(literal); | 1053 info.SetFunction(literal); |
1054 info.SetScope(literal->scope()); | 1054 info.SetScope(literal->scope()); |
1055 info.SetLanguageMode(literal->scope()->language_mode()); | 1055 info.SetLanguageMode(literal->scope()->language_mode()); |
1056 | 1056 |
1057 Isolate* isolate = info.isolate(); | 1057 Isolate* isolate = info.isolate(); |
| 1058 Factory* factory = isolate->factory(); |
1058 LiveEditFunctionTracker live_edit_tracker(isolate, literal); | 1059 LiveEditFunctionTracker live_edit_tracker(isolate, literal); |
1059 // Determine if the function can be lazily compiled. This is necessary to | 1060 // Determine if the function can be lazily compiled. This is necessary to |
1060 // allow some of our builtin JS files to be lazily compiled. These | 1061 // allow some of our builtin JS files to be lazily compiled. These |
1061 // builtins cannot be handled lazily by the parser, since we have to know | 1062 // builtins cannot be handled lazily by the parser, since we have to know |
1062 // if a function uses the special natives syntax, which is something the | 1063 // if a function uses the special natives syntax, which is something the |
1063 // parser records. | 1064 // parser records. |
1064 // If the debugger requests compilation for break points, we cannot be | 1065 // If the debugger requests compilation for break points, we cannot be |
1065 // aggressive about lazy compilation, because it might trigger compilation | 1066 // aggressive about lazy compilation, because it might trigger compilation |
1066 // of functions without an outer context when setting a breakpoint through | 1067 // of functions without an outer context when setting a breakpoint through |
1067 // Debug::FindSharedFunctionInfoInScript. | 1068 // Debug::FindSharedFunctionInfoInScript. |
1068 bool allow_lazy_without_ctx = literal->AllowsLazyCompilationWithoutContext(); | 1069 bool allow_lazy_without_ctx = literal->AllowsLazyCompilationWithoutContext(); |
1069 bool allow_lazy = literal->AllowsLazyCompilation() && | 1070 bool allow_lazy = literal->AllowsLazyCompilation() && |
1070 !DebuggerWantsEagerCompilation(&info, allow_lazy_without_ctx); | 1071 !DebuggerWantsEagerCompilation(&info, allow_lazy_without_ctx); |
1071 | 1072 |
1072 Handle<ScopeInfo> scope_info(ScopeInfo::Empty(isolate)); | 1073 Handle<ScopeInfo> scope_info(ScopeInfo::Empty(isolate)); |
1073 | 1074 |
1074 // Generate code | 1075 // Generate code |
1075 if (FLAG_lazy && allow_lazy && !literal->is_parenthesized()) { | 1076 if (FLAG_lazy && allow_lazy && !literal->is_parenthesized()) { |
1076 Handle<Code> code = isolate->builtins()->LazyCompile(); | 1077 Handle<Code> code = isolate->builtins()->LazyCompile(); |
1077 info.SetCode(code); | 1078 info.SetCode(code); |
1078 } else if (GenerateCode(&info)) { | 1079 } else if (GenerateCode(&info)) { |
1079 ASSERT(!info.code().is_null()); | 1080 ASSERT(!info.code().is_null()); |
1080 scope_info = ScopeInfo::Create(info.scope(), info.zone()); | 1081 scope_info = ScopeInfo::Create(info.scope(), info.zone()); |
1081 } else { | 1082 } else { |
1082 return Handle<SharedFunctionInfo>::null(); | 1083 return Handle<SharedFunctionInfo>::null(); |
1083 } | 1084 } |
1084 | 1085 |
1085 // Create a shared function info object. | 1086 // Create a shared function info object. |
1086 Handle<SharedFunctionInfo> result = | 1087 Handle<SharedFunctionInfo> result = |
1087 FACTORY->NewSharedFunctionInfo(literal->name(), | 1088 factory->NewSharedFunctionInfo(literal->name(), |
1088 literal->materialized_literal_count(), | 1089 literal->materialized_literal_count(), |
1089 literal->is_generator(), | 1090 literal->is_generator(), |
1090 info.code(), | 1091 info.code(), |
1091 scope_info); | 1092 scope_info); |
1092 SetFunctionInfo(result, literal, false, script); | 1093 SetFunctionInfo(result, literal, false, script); |
1093 RecordFunctionCompilation(Logger::FUNCTION_TAG, &info, result); | 1094 RecordFunctionCompilation(Logger::FUNCTION_TAG, &info, result); |
1094 result->set_allows_lazy_compilation(allow_lazy); | 1095 result->set_allows_lazy_compilation(allow_lazy); |
1095 result->set_allows_lazy_compilation_without_context(allow_lazy_without_ctx); | 1096 result->set_allows_lazy_compilation_without_context(allow_lazy_without_ctx); |
1096 | 1097 |
1097 // Set the expected number of properties for instances and return | 1098 // Set the expected number of properties for instances and return |
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1174 } | 1175 } |
1175 } | 1176 } |
1176 | 1177 |
1177 GDBJIT(AddCode(Handle<String>(shared->DebugName()), | 1178 GDBJIT(AddCode(Handle<String>(shared->DebugName()), |
1178 Handle<Script>(info->script()), | 1179 Handle<Script>(info->script()), |
1179 Handle<Code>(info->code()), | 1180 Handle<Code>(info->code()), |
1180 info)); | 1181 info)); |
1181 } | 1182 } |
1182 | 1183 |
1183 } } // namespace v8::internal | 1184 } } // namespace v8::internal |
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