blob: d0d03f1b9f5a4b19af6f19e333cdbcff35a984c4 [file] [log] [blame]
// Copyright (c) 2014, 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.
import 'api.dart';
/// Visitor specialized for generating Dart code.
class DartCodegenVisitor extends HierarchicalApiVisitor {
/// Type references in the spec that are named something else in Dart.
static const Map<String, String> _typeRenames = {
'long': 'int',
'object': 'Map',
DartCodegenVisitor(Api api) : super(api);
/// Convert the given [TypeDecl] to a Dart type.
String dartType(TypeDecl type) {
if (type is TypeReference) {
var typeName = type.typeName;
var referencedDefinition = api.types[typeName];
if (_typeRenames.containsKey(typeName)) {
return _typeRenames[typeName]!;
if (referencedDefinition == null) {
return typeName;
var referencedType = referencedDefinition.type;
if (referencedType is TypeObject || referencedType is TypeEnum) {
return typeName;
return dartType(referencedType);
} else if (type is TypeList) {
return 'List<${dartType(type.itemType)}>';
} else if (type is TypeMap) {
return 'Map<${dartType(type.keyType)}, ${dartType(type.valueType)}>';
} else if (type is TypeUnion) {
return 'Object';
} else {
throw Exception("Can't convert to a dart type");
/// Return the Dart type for [field], nullable if the field is optional.
String fieldDartType(TypeObjectField field) {
var typeStr = dartType(field.type);
return field.optional ? '$typeStr?' : typeStr;