observatory/vm: add support for computing/passing end tokens on classes

runtime/bin/vmservice/client/tests/class_parser_test.dart

+// 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.
+
+part of observatory_test;
+
+_prepareSource(String rawSource) {
+  List<ScriptLine> source = [];
+  List parts = rawSource.split('\n');
+  for (var i = 0; i < parts.length; i++) {
+    source.add(new ScriptLine(i + 1, parts[i]));
+  }
+  return source;
+}
+
+runClassParserTest() {
+  group('ClassParser', () {
+    test('Empty', () {
+      String rawSource = r"""
+class EmptyClass {}""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [1, 19]);
+    });
+
+    test('Simple', () {
+      String rawSource = r"""
+class TestClass {
+  Simple();
+}""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [3, 1]);
+    });
+
+    test('WithSingleQuotedString', () {
+      String rawSource = r"""
+class TestClass {
+  String a = '}';
+ }""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [3, 2]);
+    });
+
+    test('WithDoubleQuotedString', () {
+      String rawSource = r"""
+class TestClass {
+  String a = "}";
+  }""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [3, 3]);
+    });
+
+    test('WithSingleQuotedMultilineString', () {
+      String rawSource = r"""
+class TestClass {
+  String a = '''
+}{}''';
+}""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [4, 1]);
+    });
+
+    test('WithDoubleQuotedMultilineString', () {
+      String rawSource = r'''
+class TestClass {
+  String a = """
+}{}""";
+}''';
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [4, 1]);
+    });
+
+    test('WithSingleQuotedEscape', () {
+      String rawSource = r'''
+class TestClass {
+  String a = '\'}';
+
+ }''';
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [4, 2]);
+    });
+
+    test('WithDoubleQuotedEscape', () {
+      String rawSource = r"""
+class TestClass {
+  String a = "\"}";
+}""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [3, 1]);
+    });
+
+    test('WithSinglelineComments', () {
+      String rawSource = r"""
+class TestClass {
+  // }
+  // -- } // }
+  // }
+}""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [5, 1]);
+    });
+
+    test('WithMultilineComments', () {
+      String rawSource = r"""
+class TestClass {
+  /*
+    /* } */
+    //
+  */
+ }""";
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [6, 2]);
+    });
+
+    test('LittleBitOfEverything', () {
+      String rawSource = r'''
+class TestClass {
+  /**
+   * }
+   */
+  var a = """
+\'\"\"\"}
+""";
+  // foo
+  bar() { return "'\'}"; }
+  /* /* */ /* } */ */
+}''';
+      List<ScriptLine> source = _prepareSource(rawSource);
+      ClassParser clsp = new ClassParser(source);
+      expect(clsp.findEndPos(), [11, 1]);
+    });
+  });
+}