| // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| part of dart2js.js_emitter; |
| |
| /** |
| * A data structure for collecting fragments of a class definition. |
| */ |
| class ClassBuilder { |
| final List<jsAst.Property> properties = <jsAst.Property>[]; |
| final List<String> fields = <String>[]; |
| |
| String superName; |
| String nativeName; |
| String functionType; |
| List<jsAst.Node> fieldMetadata; |
| |
| /// Set to true by user if class is indistinguishable from its superclass. |
| bool isTrivial = false; |
| |
| // Has the same signature as [DefineStubFunction]. |
| void addProperty(String name, jsAst.Expression value) { |
| properties.add(new jsAst.Property(js.string(name), value)); |
| } |
| |
| void addField(String field) { |
| fields.add(field); |
| } |
| |
| jsAst.ObjectInitializer toObjectInitializer() { |
| StringBuffer buffer = new StringBuffer(); |
| if (superName != null) { |
| if (nativeName != null) { |
| buffer.write('$nativeName/'); |
| } |
| buffer.write('$superName'); |
| if (functionType != null) { |
| buffer.write(':$functionType'); |
| } |
| buffer.write(';'); |
| } |
| buffer.writeAll(fields, ','); |
| var classData = js.string('$buffer'); |
| if (fieldMetadata != null) { |
| // If we need to store fieldMetadata, classData is turned into an array, |
| // and the field metadata is appended. So if classData is just a string, |
| // there is no field metadata. |
| classData = |
| new jsAst.ArrayInitializer.from([classData]..addAll(fieldMetadata)); |
| } |
| var fieldsAndProperties = |
| [new jsAst.Property(js.string(''), classData)] |
| ..addAll(properties); |
| return new jsAst.ObjectInitializer(fieldsAndProperties, isOneLiner: false); |
| } |
| |
| } |