Move frog/leg to lib/compiler/implementation.

frog/leg/dart2js.dart

-// Copyright (c) 2012, 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.
-
-#library('dart2js');
-
-#import('dart:io');
-#import('dart:utf');
-
-#import('../../lib/uri/uri.dart');
-#import('../../frog/leg/api.dart', prefix: 'api');
-#import('../../frog/leg/io/io.dart', prefix: 'io');
-#import('../../frog/leg/colors.dart');
-#import('source_file.dart');
-
-String relativize(Uri base, Uri uri) {
-  if (base.scheme == 'file' &&
-      base.scheme == uri.scheme &&
-      base.userInfo == uri.userInfo &&
-      base.domain == uri.domain &&
-      base.port == uri.port &&
-      uri.query == "" && uri.fragment == "") {
-    if (uri.path.startsWith(base.path)) {
-      return uri.path.substring(base.path.length);
-    }
-    List<String> uriParts = uri.path.split('/');
-    List<String> baseParts = base.path.split('/');
-    int common = 0;
-    int length = Math.min(uriParts.length, baseParts.length);
-    while (common < length && uriParts[common] == baseParts[common]) {
-      common++;
-    }
-    StringBuffer sb = new StringBuffer();
-    for (int i = common + 1; i < baseParts.length; i++) {
-      sb.add('../');
-    }
-    for (int i = common; i < uriParts.length - 1; i++) {
-      sb.add('${uriParts[i]}/');
-    }
-    sb.add('${uriParts.last()}');
-    return sb.toString();
-  }
-  return uri.toString();
-}
-
-void compile(List<String> argv) {
-  Uri cwd = new Uri(scheme: 'file', path: io.getCurrentDirectory());
-  bool throwOnError = false;
-  bool showWarnings = true;
-  bool verbose = false;
-  Uri libraryRoot = cwd;
-  Uri out = cwd.resolve('out.js');
-
-  List<String> arguments = <String>[];
-  for (String argument in argv) {
-    if ('--throw-on-error' == argument) {
-      throwOnError = true;
-    } else if ('--suppress-warnings' == argument) {
-      showWarnings = false;
-    } else if ('--verbose' == argument) {
-      verbose = true;
-    } else if (argument.startsWith('--library-root=')) {
-      String path = argument.substring(argument.indexOf('=') + 1);
-      if (!path.endsWith("/")) path = "$path/";
-      libraryRoot = cwd.resolve(path);
-    } else if (argument.startsWith('--out=')) {
-      String path = argument.substring(argument.indexOf('=') + 1);
-      out = cwd.resolve(path);
-    } else if (argument.startsWith('-')) {
-      throw new AbortLeg('unknown option $argument');
-    } else {
-      arguments.add(argument);
-    }
-  }
-  if (arguments.isEmpty()) {
-    throw new AbortLeg('no files to compile');
-  }
-  if (arguments.length > 1) {
-    var extra = arguments.getRange(1, arguments.length - 1);
-    throw new AbortLeg('extra arguments: $extra');
-  }
-
-  Map<String, SourceFile> sourceFiles = <SourceFile>{};
-  int dartBytesRead = 0;
-
-  Future<String> provider(Uri uri) {
-    if (uri.scheme != 'file') {
-      throw new IllegalArgumentException(uri);
-    }
-    String source = readAll(uri.path);
-    dartBytesRead += source.length;
-    sourceFiles[uri.toString()] =
-      new SourceFile(relativize(cwd, uri), source);
-    Completer<String> completer = new Completer<String>();
-    completer.complete(source);
-    return completer.future;
-  }
-
-  void info(var message) {
-    if (verbose) print('${green("info:")} $message');
-  }
-
-  void handler(Uri uri, int begin, int end, String message, bool fatal) {
-    if (uri === null && !fatal) {
-      info(message);
-      return;
-    }
-    if (uri === null) {
-      assert(fatal);
-      print(message);
-    } else if (fatal || showWarnings) {
-      SourceFile file = sourceFiles[uri.toString()];
-      print(file.getLocationMessage(message, begin, end, true));
-    }
-    if (fatal && throwOnError) throw new AbortLeg(message);
-  }
-
-  Uri uri = cwd.resolve(arguments[0]);
-  info('compiling $uri');
-
-  // TODO(ahe): We expect the future to be complete and call value
-  // directly. In effect, we don't support truly asynchronous API.
-  String code = api.compile(uri, libraryRoot, provider, handler).value;
-  if (code === null) throw new AbortLeg('compilation failed');
-  writeString(out, code);
-  int jsBytesWritten = code.length;
-  info('compiled $dartBytesRead bytes Dart -> $jsBytesWritten bytes JS '
-       + 'in ${relativize(cwd, out)}');
-}
-
-class AbortLeg {
-  final message;
-  AbortLeg(this.message);
-  toString() => 'Aborted due to --throw-on-error: $message';
-}
-
-void writeString(Uri uri, String text) {
-  if (uri.scheme != 'file') {
-    throw new AbortLeg('unhandled scheme ${uri.scheme}');
-  }
-  var file = new File(uri.path).openSync(FileMode.WRITE);
-  file.writeStringSync(text);
-  file.closeSync();
-}
-
-String readAll(String filename) {
-  var file = (new File(filename)).openSync();
-  var length = file.lengthSync();
-  var buffer = new List<int>(length);
-  var bytes = file.readListSync(buffer, 0, length);
-  file.closeSync();
-  return new String.fromCharCodes(new Utf8Decoder(buffer).decodeRest());
-}