Remove cancel and make crash exit with code 253.

sdk/lib/_internal/compiler/implementation/apiimpl.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 leg_apiimpl;
 
 import 'dart:async';
 
 import '../compiler.dart' as api;
 import 'dart2jslib.dart' as leg;
@@ skipping 141 matching lines @@
                            Uri resolvedUri, tree.Node node) {
     if (resolvedUri.scheme == 'dart') {
       return translateDartUri(importingLibrary, resolvedUri, node);
     }
     return resolvedUri;
   }
 
   /**
    * Reads the script designated by [readableUri].
    */
-  Future<leg.Script> readScript(Uri readableUri,
-                                [elements.Element element, tree.Node node]) {
+  Future<leg.Script> readScript(leg.Spannable node, Uri readableUri) {
     if (!readableUri.isAbsolute) {
-      internalError('Relative uri $readableUri provided to readScript(Uri)',
-                    node: node);
+      internalError(node,
+          'Relative uri $readableUri provided to readScript(Uri).');
     }
 
-    // TODO(johnniwinther): Add [:report(..., {Element element}):] to
-    // report methods in Compiler.
+    // We need to store the current element since we are reporting read errors
+    // asynchronously and therefore need to restore the current element for
+    // [node] to be valid.
+    elements.Element element = currentElement;
     void reportReadError(exception) {
       withCurrentElement(element, () {
         reportError(node,
                     leg.MessageKind.READ_SCRIPT_ERROR,
                     {'uri': readableUri, 'exception': exception});
       });
     }
 
-    Uri resourceUri = translateUri(readableUri, node);
+    Uri resourceUri = translateUri(node, readableUri);
     // TODO(johnniwinther): Wrap the result from [provider] in a specialized
     // [Future] to ensure that we never execute an asynchronous action without
     // setting up the current element of the compiler.
     return new Future.sync(() => callUserProvider(resourceUri)).then((data) {
       SourceFile sourceFile;
       String resourceUriString = resourceUri.toString();
       if (data is List<int>) {
         sourceFile = new Utf8BytesSourceFile(resourceUriString, data);
       } else if (data is String) {
         sourceFile = new StringSourceFile(resourceUriString, data);
@@ skipping 11 matching lines @@
       reportReadError(error);
       return null;
     });
   }
 
   /**
    * Translates a readable URI into a resource URI.
    *
    * See [LibraryLoader] for terminology on URIs.
    */
-  Uri translateUri(Uri readableUri, tree.Node node) {
+  Uri translateUri(leg.Spannable node, Uri readableUri) {
     switch (readableUri.scheme) {
-      case 'package': return translatePackageUri(readableUri, node);
+      case 'package': return translatePackageUri(node, readableUri);
       default: return readableUri;
     }
   }
 
   Uri translateDartUri(elements.LibraryElement importingLibrary,
                        Uri resolvedUri, tree.Node node) {
     LibraryInfo libraryInfo = LIBRARIES[resolvedUri.path];
     String path = lookupLibraryPath(resolvedUri.path);
     if (libraryInfo != null &&
         libraryInfo.category == "Internal") {
@@ skipping 34 matching lines @@
     }
     return libraryRoot.resolve(path);
   }
 
   Uri resolvePatchUri(String dartLibraryPath) {
     String patchPath = lookupPatchPath(dartLibraryPath);
     if (patchPath == null) return null;
     return libraryRoot.resolve(patchPath);
   }
 
-  Uri translatePackageUri(Uri uri, tree.Node node) {
+  Uri translatePackageUri(leg.Spannable node, Uri uri) {
     if (packageRoot == null) {
       reportFatalError(
           node, leg.MessageKind.PACKAGE_ROOT_NOT_SET, {'uri': uri});
     }
     return packageRoot.resolve(uri.path);
   }
 
   Future<bool> run(Uri uri) {
     log('Allowed library categories: $allowedLibraryCategories');
     return super.run(uri).then((bool success) {
@@ skipping 16 matching lines @@
     if (identical(kind, api.Diagnostic.ERROR)
         || identical(kind, api.Diagnostic.CRASH)) {
       compilationFailed = true;
     }
     // [:span.uri:] might be [:null:] in case of a [Script] with no [uri]. For
     // instance in the [Types] constructor in typechecker.dart.
     if (span == null || span.uri == null) {
       callUserHandler(null, null, null, '$message', kind);
     } else {
       callUserHandler(
-          translateUri(span.uri, null), span.begin, span.end, '$message', kind);
+          translateUri(null, span.uri), span.begin, span.end, '$message', kind);
     }
   }
 
   bool get isMockCompilation {
     return mockableLibraryUsed
       && (options.indexOf('--allow-mock-compilation') != -1);
   }
 
   void callUserHandler(Uri uri, int begin, int end,
                        String message, api.Diagnostic kind) {
@@ skipping 16 matching lines @@
   }
 
   void diagnoseCrashInUserCode(String message, exception, stackTrace) {
     hasCrashed = true;
     print('$message: ${tryToString(exception)}');
     print(tryToString(stackTrace));
   }
 
   fromEnvironment(String name) => environment[name];
 }