Handle Windows line endings in multi-line strings. Fix #126.

lib/src/source_visitor.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.
 
 library dart_style.src.source_visitor;
 
 import 'package:analyzer/analyzer.dart';
 import 'package:analyzer/src/generated/scanner.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 import '../dart_style.dart';
 import 'chunk.dart';
 import 'line_writer.dart';
 import 'whitespace.dart';
 
 /// An AST visitor that drives formatting heuristics.
 class SourceVisitor implements AstVisitor {
+  final DartFormatter _formatter;
+
   /// The writer to which the output lines are written.
   final LineWriter _writer;
 
   /// Cached line info for calculating blank lines.
   LineInfo _lineInfo;
 
   /// The source being formatted.
   final SourceCode _source;
 
   /// `true` if the visitor has written past the beginning of the selection in
   /// the original source text.
   bool _passedSelectionStart = false;
 
   /// `true` if the visitor has written past the end of the selection in the
   /// original source text.
   bool _passedSelectionEnd = false;
 
   /// Initialize a newly created visitor to write source code representing
   /// the visited nodes to the given [writer].
-  SourceVisitor(DartFormatter formatter, this._lineInfo, SourceCode source)
-      : _source = source,
+  SourceVisitor(formatter, this._lineInfo, SourceCode source)
+      : _formatter = formatter,
+        _source = source,
         _writer = new LineWriter(formatter, source);
 
   /// Runs the visitor on [node], formatting its contents.
   ///
   /// Returns a [SourceCode] containing the resulting formatted source and
   /// updated selection, if any.
   ///
   /// This is the only method that should be called externally. Everything else
   /// is effectively private.
   SourceCode run(AstNode node) {
@@ skipping 1533 matching lines @@
   bool _isLambda(AstNode node) =>
       node.parent is FunctionExpression &&
       node.parent.parent is! FunctionDeclaration;
 
   /// Writes the string literal [string] to the output.
   ///
   /// Splits multiline strings into separate chunks so that the line splitter
   /// can handle them correctly.
   void _writeStringLiteral(String string, int offset) {
     // Split each line of a multiline string into separate chunks.
-    var lines = string.split("\n");
+    var lines = string.split(_formatter.lineEnding);
 
     _writeText(lines.first, offset);
     offset += lines.first.length;
 
     for (var line in lines.skip(1)) {
       _writer.writeWhitespace(Whitespace.newlineFlushLeft);
       offset++;
       _writeText(line, offset);
       offset += line.length;
     }
@@ skipping 195 matching lines @@
   /// Gets the 1-based line number that the beginning of [token] lies on.
   int _startLine(Token token) => _lineInfo.getLocation(token.offset).lineNumber;
 
   /// Gets the 1-based line number that the end of [token] lies on.
   int _endLine(Token token) => _lineInfo.getLocation(token.end).lineNumber;
 
   /// Gets the 1-based column number that the beginning of [token] lies on.
   int _startColumn(Token token) =>
       _lineInfo.getLocation(token.offset).columnNumber;
 }