renaming File to Source

lib/parser.dart

Index: lib/parser.dart
diff --git a/lib/parser.dart b/lib/parser.dart
index 1313d64d7384dac4c9f076525f033b9966e54181..3849913a39be562746481821462595d2cddaf33c 100644
--- a/lib/parser.dart
+++ b/lib/parser.dart
@@ -44,9 +44,9 @@ Mapping parseJson(Map map, {Map<String, Map> otherMaps}) {
 
 /// A mapping parsed our of a source map.
 abstract class Mapping {
-  Span spanFor(int line, int column, {Map<String, File> files});
+  Span spanFor(int line, int column, {Map<String, SourceFile> files});
 
-  Span spanForLocation(Location loc, {Map<String, File> files}) {
+  Span spanForLocation(Location loc, {Map<String, SourceFile> files}) {
     return spanFor(loc.line, loc.column, files: files);
   }
 }
@@ -109,7 +109,7 @@ class MultiSectionMapping extends Mapping {
     return _lineStart.length - 1;
   }
 
-  Span spanFor(int line, int column, {Map<String, File> files}) {
+  Span spanFor(int line, int column, {Map<String, SourceFile> files}) {
     int index = _indexFor(line, column);
     return _maps[index].spanFor(
         line - _lineStart[index], column - _columnStart[index], files: files);
@@ -241,7 +241,7 @@ class SingleMapping extends Mapping {
     return (index <= 0) ? null : entries[index - 1];
   }
 
-  Span spanFor(int line, int column, {Map<String, File> files}) {
+  Span spanFor(int line, int column, {Map<String, SourceFile> files}) {
     var lineEntry = _findLine(line);
     var entry = _findColumn(line, column, _findLine(line));
     if (entry == null) return null;