Add interfaces for a new compiler API.

pkg/compiler/lib/src/source_file_provider.dart

Index: pkg/compiler/lib/src/source_file_provider.dart
diff --git a/pkg/compiler/lib/src/source_file_provider.dart b/pkg/compiler/lib/src/source_file_provider.dart
index cbc6ff3383cb5be3d3422cfebbf71900054185de..1b3b44b9e6171848a3af04df237b8d79c1486fa9 100644
--- a/pkg/compiler/lib/src/source_file_provider.dart
+++ b/pkg/compiler/lib/src/source_file_provider.dart
@@ -10,12 +10,14 @@ import 'dart:io';
 import 'dart:math' as math;
 
 import '../compiler.dart' as api show Diagnostic, DiagnosticHandler;
+import '../compiler_new.dart' as api show CompilerInput, CompilerDiagnostics;
 import 'dart2js.dart' show AbortLeg;
 import 'colors.dart' as colors;
 import 'io/source_file.dart';
 import 'filenames.dart';
 import 'util/uri_extras.dart';
 import 'dart:typed_data';
+import '../compiler_new.dart';
 
 List<int> readAll(String filename) {
   var file = (new File(filename)).openSync();
@@ -27,7 +29,7 @@ List<int> readAll(String filename) {
   return buffer;
 }
 
-abstract class SourceFileProvider {
+abstract class SourceFileProvider implements CompilerInput {
   bool isWindows = (Platform.operatingSystem == 'windows');
   Uri cwd = currentDirectory;
   Map<Uri, SourceFile> sourceFiles = <Uri, SourceFile>{};
@@ -110,10 +112,14 @@ abstract class SourceFileProvider {
 }
 
 class CompilerSourceFileProvider extends SourceFileProvider {
-  Future<List<int>> call(Uri resourceUri) => readUtf8BytesFromUri(resourceUri);
+
+  Future<List<int>> call(Uri resourceUri) => readFromUri(resourceUri);

[Siggi Cherem (dart-lang), 2015/07/13 17:28:37]

After we are done with the refactor, will we need the `call` API anymore? add a
TODO?

[Johnni Winther, 2015/07/13 17:45:19]

These _are_ going away. Adding TODOs.

+
+  @override
+  Future readFromUri(Uri uri) => readUtf8BytesFromUri(uri);
 }
 
-class FormattingDiagnosticHandler {
+class FormattingDiagnosticHandler implements CompilerDiagnostics {
   final SourceFileProvider provider;
   bool showWarnings = true;
   bool showHints = true;
@@ -160,8 +166,9 @@ class FormattingDiagnosticHandler {
     throw 'Unexpected diagnostic kind: $kind (${kind.ordinal})';
   }
 
-  void diagnosticHandler(Uri uri, int begin, int end, String message,
-                         api.Diagnostic kind) {
+  @override
+  void reportDiagnostic(Uri uri, int begin, int end, String message,
+                        api.Diagnostic kind) {
     // TODO(ahe): Remove this when source map is handled differently.
     if (identical(kind.name, 'source map')) return;
 
@@ -224,7 +231,7 @@ class FormattingDiagnosticHandler {
   }
 
   void call(Uri uri, int begin, int end, String message, api.Diagnostic kind) {

[Siggi Cherem (dart-lang), 2015/07/13 17:28:37]

same here

[Johnni Winther, 2015/07/13 19:02:22]

Done.

-    return diagnosticHandler(uri, begin, end, message, kind);
+    return reportDiagnostic(uri, begin, end, message, kind);
   }
 }