Support locals in compile_from_dill_test.

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 118 matching lines @@
 
   @override
   HGraph build(CodegenWorkItem work, ClosedWorld closedWorld) {
     KernelSsaBuilder builder = new KernelSsaBuilder(
         work.element,
         work.element.enclosingClass,
         _elementMap.getMemberNode(work.element),
         _compiler,
         _elementMap,
         new KernelToTypeInferenceMapImpl(closedWorld),
-        null,
+        new KernelToLocalsMapImpl(work.element),
         closedWorld,
         work.registry,
         // TODO(johnniwinther): Support these:
         const KernelClosureClassMaps(),
         const SourceInformationBuilder(),
         null, // Function node used as capture scope id.
         targetIsConstructorBody: false);
     return builder.build();
   }
 }
@@ skipping 72 matching lines @@
     return _closedWorld.commonMasks.dynamicType;
   }
 
   @override
   TypeMask getReturnTypeOf(FunctionEntity function) {
     return _closedWorld.commonMasks.dynamicType;
   }
 }
 
 class KernelToLocalsMapImpl implements KernelToLocalsMap {
-  @override
-  void enterInlinedMember(MemberEntity member) {}
+  final List<MemberEntity> _members = <MemberEntity>[];
+  Map<ir.VariableDeclaration, KLocal> _map = <ir.VariableDeclaration, KLocal>{};
+
+  MemberEntity get currentMember => _members.last;
+
+  KernelToLocalsMapImpl(MemberEntity member) {
+    _members.add(member);
+  }
 
   @override
-  void leaveInlinedMember(MemberEntity member) {}
+  void enterInlinedMember(MemberEntity member) {
+    _members.add(member);
+  }
+
+  @override
+  void leaveInlinedMember(MemberEntity member) {
+    assert(member == currentMember);
+    _members.removeLast();
+  }
 
   @override
   JumpTarget getJumpTarget(ir.TreeNode node, {bool isContinueTarget: false}) {
     throw new UnimplementedError('KernelToLocalsMapImpl.getJumpTarget');
   }
 
   @override
   Local getLocal(ir.VariableDeclaration node) {
-    throw new UnimplementedError('KernelToLocalsMapImpl.getLocal');
+    return _map.putIfAbsent(node, () {
+      return new KLocal(node.name, currentMember);
+    });
   }
 }
 
+class KLocal implements Local {
+  final String name;
+  final MemberEntity memberContext;
+
+  KLocal(this.name, this.memberContext);
+
+  @override
+  Entity get executableContext => memberContext;
+}
+
 /// TODO(johnniwinther,efortuna): Implement this.
 class KernelClosureClassMaps implements ClosureClassMaps {
   const KernelClosureClassMaps();
 
   @override
   ClosureClassMap getLocalFunctionMap(Local localFunction) {
     return new ClosureClassMap(null, null, null, null);
   }
 
   @override
@@ skipping 42 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));
       });
   }
 }