| // Copyright (c) 2022, 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 'dart:collection'; |
| |
| import 'package:analyzer/dart/element/type.dart'; |
| import 'package:analyzer/src/dart/constant/value.dart'; |
| |
| /// Prints [DartObjectImpl] as a tree, with values and fields. |
| class DartObjectPrinter { |
| final StringBuffer sink; |
| |
| DartObjectPrinter(this.sink); |
| |
| void write(DartObjectImpl? object, String indent) { |
| if (object != null) { |
| var type = object.type; |
| if (object.isUnknown) { |
| sink.write( |
| type.getDisplayString( |
| withNullability: true, |
| ), |
| ); |
| sink.writeln(' <unknown>'); |
| } else if (type.isDartCoreDouble) { |
| sink.write('double '); |
| sink.writeln(object.toDoubleValue()); |
| } else if (type.isDartCoreInt) { |
| sink.write('int '); |
| sink.writeln(object.toIntValue()); |
| } else if (type.isDartCoreString) { |
| sink.write('String '); |
| sink.writeln(object.toStringValue()); |
| } else if (type.isDartCoreList) { |
| var newIndent = '$indent '; |
| sink.writeln('List'); |
| sink.write(newIndent); |
| sink.writeln( |
| 'elementType: ${(type as InterfaceType).typeArguments[0]}'); |
| var elements = object.toListValue()!; |
| for (int i = 0; i < elements.length; i++) { |
| sink.write(newIndent); |
| write(elements[i] as DartObjectImpl, newIndent); |
| } |
| } else if (object.isUserDefinedObject) { |
| var newIndent = '$indent '; |
| var typeStr = type.getDisplayString(withNullability: true); |
| sink.writeln(typeStr); |
| var fields = object.fields; |
| if (fields != null) { |
| var sortedFields = SplayTreeMap.of(fields); |
| for (var entry in sortedFields.entries) { |
| sink.write(newIndent); |
| sink.write('${entry.key}: '); |
| write(entry.value, newIndent); |
| } |
| } |
| } else { |
| throw UnimplementedError(); |
| } |
| } else { |
| sink.writeln('<null>'); |
| } |
| } |
| } |