johnniwinther@google.com
713e95822c
BUG= R=ahe@google.com Review URL: https://codereview.chromium.org//700163002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@41554 260f80e4-7a28-3924-810f-c04153c831b5
77 lines
2.2 KiB
Dart
77 lines
2.2 KiB
Dart
// Copyright (c) 2013, 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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// This sample demonstrates how to run the compiler in a loop reading
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// all sources from memory, instead of using dart:io.
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library sample.compile_loop;
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import 'dart:async';
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import '../../lib/compiler.dart' as compiler;
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// If this file is missing, generate it using ../jsonify/jsonify.dart.
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import 'sdk.dart';
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Future<String> compile(source) {
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Future<String> inputProvider(Uri uri) {
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if (uri.scheme == 'sdk') {
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var value = SDK_SOURCES['$uri'];
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if (value == null) {
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// TODO(ahe): Use new Future.error.
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throw new Exception('Error: Cannot read: $uri');
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}
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return new Future.value(value);
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} else if ('$uri' == 'memory:/main.dart') {
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return new Future.value(source);
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}
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// TODO(ahe): Use new Future.error.
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throw new Exception('Error: Cannot read: $uri');
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}
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void handler(Uri uri, int begin, int end,
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String message, compiler.Diagnostic kind) {
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// TODO(ahe): Remove dart:io import from
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// ../../lib/src/source_file_provider.dart and use
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// FormattingDiagnosticHandler instead.
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print({ 'uri': '$uri',
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'begin': begin,
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'end': end,
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'message': message,
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'kind': kind.name });
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if (kind == compiler.Diagnostic.ERROR) {
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throw new Exception('Unexpected error occurred.');
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}
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}
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return compiler.compile(
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Uri.parse('memory:/main.dart'),
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Uri.parse('sdk:/sdk/'),
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null,
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inputProvider,
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handler,
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[]);
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}
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int iterations = 10;
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main() {
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compile(EXAMPLE_HELLO_HTML).then((jsResult) {
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if (jsResult == null) throw 'Compilation failed';
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if (--iterations > 0) main();
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});
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}
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const String EXAMPLE_HELLO_HTML = r'''
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// Go ahead and modify this example.
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import "dart:html";
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var greeting = "Hello, World!";
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// Displays a greeting.
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void main() {
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// This example uses HTML to display the greeting and it will appear
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// in a nested HTML frame (an iframe).
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document.body.append(new HeadingElement.h1()..appendText(greeting));
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}
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''';
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