Refactor SourceFile, SourceFileProvider and SourceLocation.

pkg/compiler/lib/src/ssa/builder.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.
 
 part of ssa;
 
 class SsaFunctionCompiler implements FunctionCompiler {
   SsaCodeGeneratorTask generator;
   SsaBuilderTask builder;
   SsaOptimizerTask optimizer;
@@ skipping 1134 matching lines @@
 
   void addWithPosition(HInstruction instruction, ast.Node node) {
     add(attachPosition(instruction, node));
   }
 
   SourceFile currentSourceFile() {
     return sourceElement.implementation.compilationUnit.script.file;
   }
 
   void checkValidSourceFileLocation(
-      SourceFileLocation location, SourceFile sourceFile, int offset) {
-    if (!location.isValid()) {
+      SourceLocation location, SourceFile sourceFile, int offset) {
+    if (!location.isValid) {
       throw MessageKind.INVALID_SOURCE_FILE_LOCATION.message(
           {'offset': offset,
            'fileName': sourceFile.filename,
            'length': sourceFile.length});
     }
   }
 
   /**
    * Returns a complete argument list for a call of [function].
    */
@@ skipping 1341 matching lines @@
   SourceInformation sourceInformationForBeginToken(ast.Node node) {
     return new StartEndSourceInformation(sourceFileLocationForBeginToken(node));
   }
 
   SourceInformation sourceInformationForBeginEndToken(ast.Node node) {
     return new StartEndSourceInformation(
         sourceFileLocationForBeginToken(node),
         sourceFileLocationForEndToken(node));
   }
 
-  SourceFileLocation sourceFileLocationForBeginToken(ast.Node node) =>
+  SourceLocation sourceFileLocationForBeginToken(ast.Node node) =>
       sourceFileLocationForToken(node, node.getBeginToken());
 
-  SourceFileLocation sourceFileLocationForEndToken(ast.Node node) =>
+  SourceLocation sourceFileLocationForEndToken(ast.Node node) =>
       sourceFileLocationForToken(node, node.getEndToken());
 
-  SourceFileLocation sourceFileLocationForToken(ast.Node node, Token token) {
+  SourceLocation sourceFileLocationForToken(ast.Node node, Token token) {
     SourceFile sourceFile = currentSourceFile();
-    SourceFileLocation location =
-        new TokenSourceFileLocation(sourceFile, token, sourceElement.name);
+    SourceLocation location =
+        new TokenSourceLocation(sourceFile, token, sourceElement.name);
     checkValidSourceFileLocation(location, sourceFile, token.charOffset);
     return location;
   }
 
   void visit(ast.Node node) {
     if (node != null) node.accept(this);
   }
 
   visitBlock(ast.Block node) {
     assert(!isAborted());
@@ skipping 4377 matching lines @@
     if (unaliased is TypedefType) throw 'unable to unalias $type';
     unaliased.accept(this, builder);
   }
 
   void visitDynamicType(DynamicType type, SsaBuilder builder) {
     JavaScriptBackend backend = builder.compiler.backend;
     ClassElement cls = backend.findHelper('DynamicRuntimeType');
     builder.push(new HDynamicType(type, new TypeMask.exact(cls, classWorld)));
   }
 }