Refactoring to prepare for kernel based jump targets

pkg/compiler/lib/src/kernel/kernel_backend_strategy.dart

 // Copyright (c) 2017, 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 dart2js.kernel.backend_strategy;
 
 import 'package:kernel/ast.dart' as ir;
 
 import '../backend_strategy.dart';
 import '../closure.dart';
@@ skipping 26 matching lines @@
 import 'element_map_impl.dart';
 import 'kernel_strategy.dart';
 
 /// A backend strategy based on Kernel IR nodes.
 abstract class KernelBackendStrategy implements BackendStrategy {
   KernelToElementMap get elementMap;
   GlobalLocalsMap get globalLocalsMapForTesting;
 }
 
 /// Backend strategy that uses the kernel elements as the backend model.
-// TODO(johnniwinther): Replace this with a strategy based on the J-element
+// TODO(redemption): Replace this with a strategy based on the J-element
 // model.
 class KernelBackendStrategyImpl implements KernelBackendStrategy {
   final Compiler _compiler;
   Sorter _sorter;
   ClosureConversionTask _closureDataLookup;
   final GlobalLocalsMap _globalLocalsMap = new GlobalLocalsMap();
 
   KernelBackendStrategyImpl(this._compiler);
 
   KernelToElementMap get elementMap {
@@ skipping 108 matching lines @@
         work.element.enclosingClass,
         _elementMap.getMemberNode(work.element),
         _compiler,
         _elementMap,
         new KernelToTypeInferenceMapImpl(closedWorld),
         localsMap,
         closedWorld,
         _compiler.codegenWorldBuilder,
         work.registry,
         _compiler.backendStrategy.closureDataLookup,
-        // TODO(johnniwinther): Support these:
+        // TODO(redemption): Support these:
         const SourceInformationBuilder(),
         null, // Function node used as capture scope id.
         targetIsConstructorBody: false);
     return builder.build();
   }
 }
 
 class KernelToTypeInferenceMapImpl implements KernelToTypeInferenceMap {
   final ClosedWorld _closedWorld;
 
@@ skipping 104 matching lines @@
     _members.add(member);
   }
 
   @override
   void leaveInlinedMember(MemberEntity member) {
     assert(member == currentMember);
     _members.removeLast();
   }
 
   @override
-  JumpTarget getJumpTarget(ir.TreeNode node, {bool isContinueTarget: false}) {
-    // TODO(johnniwinther): Support jump targets.
+  JumpTarget getJumpTargetForBreak(ir.BreakStatement node) {
+    throw new UnimplementedError('KernelToLocalsMapImpl.getJumpTargetForBreak');
+  }
+
+  @override
+  JumpTarget getJumpTargetForContinueSwitch(ir.ContinueSwitchStatement node) {
+    throw new UnimplementedError(
+        'KernelToLocalsMapImpl.getJumpTargetForContinueSwitch');
+  }
+
+  @override
+  JumpTarget getJumpTargetForSwitchCase(ir.SwitchCase node) {
+    throw new UnimplementedError(
+        'KernelToLocalsMapImpl.getJumpTargetForSwitchCase');
+  }
+
+  @override
+  JumpTarget getJumpTargetForDo(ir.DoStatement node) {
+    // TODO(redemption): Support do statement as jump target.
     return null;
   }
 
+  @override
+  JumpTarget getJumpTargetForLabel(ir.LabeledStatement node) {
+    throw new UnimplementedError('KernelToLocalsMapImpl.getJumpTargetForLabel');
+  }
+
+  @override
+  JumpTarget getJumpTargetForSwitch(ir.SwitchStatement node) {
+    throw new UnimplementedError(
+        'KernelToLocalsMapImpl.getJumpTargetForSwitch');
+  }
+
+  @override
+  JumpTarget getJumpTargetForFor(ir.ForStatement node) {
+    // TODO(redemption): Support for statement as jump target.
+    return null;
+  }
+
+  @override
+  JumpTarget getJumpTargetForForIn(ir.ForInStatement node) {
+    // TODO(redemption): Support for-in statement as jump target.
+    return null;
+  }
+
+  @override
+  JumpTarget getJumpTargetForWhile(ir.WhileStatement node) {
+    // TODO(redemption): Support while statement as jump target.
+    return null;
+  }
+
   @override
   Local getLocal(ir.VariableDeclaration node) {
     return _map.putIfAbsent(node, () {
       return new KLocal(node.name, currentMember);
     });
   }
 
   @override
   LoopClosureRepresentationInfo getClosureRepresentationInfoForLoop(
       ClosureDataLookup closureLookup, ir.TreeNode node) {
@@ skipping 65 matching lines @@
   Iterable<ClassEntity> sortClasses(Iterable<ClassEntity> classes) {
     return classes.toList()
       ..sort((ClassEntity a, ClassEntity b) {
         int r = _compareLibraries(a.library, b.library);
         if (r != 0) return r;
         return _compareNodes(
             a, elementMap.getClassNode(a), b, elementMap.getClassNode(b));
       });
   }
 }