kasperl@google.com
1f329f5917
I did a last minute change to the name of the new elements implementation file. Ugh. TBR'ed. R=ahe@google.com BUG= Review URL: https://codereview.chromium.org//11865007 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@16962 260f80e4-7a28-3924-810f-c04153c831b5
104 lines
3.8 KiB
Dart
104 lines
3.8 KiB
Dart
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library parser_helper;
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import "dart:uri";
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import "../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart";
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import "../../../sdk/lib/_internal/compiler/implementation/tree/tree.dart";
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import "../../../sdk/lib/_internal/compiler/implementation/scanner/scannerlib.dart";
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import "../../../sdk/lib/_internal/compiler/implementation/source_file.dart";
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import "../../../sdk/lib/_internal/compiler/implementation/util/util.dart";
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import "../../../sdk/lib/_internal/compiler/implementation/elements/modelx.dart"
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show CompilationUnitElementX,
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LibraryElementX;
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import "../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart"
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hide SourceString;
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export "../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart"
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show DiagnosticListener;
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// TODO(ahe): We should have token library to export instead.
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export "../../../sdk/lib/_internal/compiler/implementation/scanner/scannerlib.dart";
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class LoggerCanceler implements DiagnosticListener {
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void cancel(String reason, {node, token, instruction, element}) {
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throw new CompilerCancelledException(reason);
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}
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void log(message) {
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print(message);
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}
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}
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Token scan(String text) => new StringScanner(text).tokenize();
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Node parseBodyCode(String text, Function parseMethod,
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{DiagnosticListener diagnosticHandler}) {
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Token tokens = scan(text);
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if (diagnosticHandler == null) diagnosticHandler = new LoggerCanceler();
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Script script =
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new Script(
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new Uri.fromComponents(scheme: "source"),
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new MockFile(text));
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LibraryElement library = new LibraryElementX(script);
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library.canUseNative = true;
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NodeListener listener =
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new NodeListener(diagnosticHandler, library.entryCompilationUnit);
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Parser parser = new Parser(listener);
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Token endToken = parseMethod(parser, tokens);
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assert(endToken.kind == EOF_TOKEN);
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Node node = listener.popNode();
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Expect.isNotNull(node);
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Expect.isTrue(listener.nodes.isEmpty, 'Not empty: ${listener.nodes}');
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return node;
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}
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Node parseStatement(String text) =>
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parseBodyCode(text, (parser, tokens) => parser.parseStatement(tokens));
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Node parseFunction(String text, Compiler compiler) {
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Element element = parseUnit(text, compiler, compiler.mainApp).head;
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Expect.isNotNull(element);
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Expect.equals(ElementKind.FUNCTION, element.kind);
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return element.parseNode(compiler);
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}
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Node parseMember(String text, {DiagnosticListener diagnosticHandler}) {
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return parseBodyCode(text, (parser, tokens) => parser.parseMember(tokens),
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diagnosticHandler: diagnosticHandler);
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}
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class MockFile extends SourceFile {
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MockFile(text)
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: super('<string>', text);
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}
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Link<Element> parseUnit(String text, Compiler compiler,
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LibraryElement library) {
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Token tokens = scan(text);
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Uri uri = new Uri.fromComponents(scheme: "source");
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var script = new Script(uri, new MockFile(text));
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var unit = new CompilationUnitElementX(script, library);
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int id = 0;
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ElementListener listener = new ElementListener(compiler, unit, () => id++);
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PartialParser parser = new PartialParser(listener);
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compiler.withCurrentElement(unit, () => parser.parseUnit(tokens));
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return unit.localMembers;
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}
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NodeList fullParseUnit(String source, {DiagnosticListener diagnosticHandler}) {
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return parseBodyCode(source, (parser, tokens) => parser.parseUnit(tokens),
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diagnosticHandler: diagnosticHandler);
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}
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// TODO(ahe): We define this method to avoid having to import
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// the scanner in the tests. We should move SourceString to another
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// location instead.
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SourceString buildSourceString(String name) {
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return new SourceString(name);
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}
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