Pass ClosedWorld directly to codegen tasks

pkg/compiler/lib/src/ssa/kernel_ast_adapter.dart

 // Copyright (c) 2016, 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.
 
 import 'package:js_runtime/shared/embedded_names.dart';
 import 'package:kernel/ast.dart' as ir;
 
 import '../constants/expressions.dart';
 import '../common.dart';
 import '../common/names.dart';
@@ skipping 49 matching lines @@
     for (LocalFunctionElement localFunction in kernel.localFunctions.keys) {
       _nodeToElement[kernel.localFunctions[localFunction]] = localFunction;
     }
     _typeConverter = new DartTypeConverter(this);
   }
 
   Compiler get _compiler => _backend.compiler;
   TreeElements get elements => _resolvedAst.elements;
   DiagnosticReporter get reporter => _compiler.reporter;
   Element get _target => _resolvedAst.element;
-  ClosedWorld get _closedWorld => _compiler.closedWorld;
 
   GlobalTypeInferenceResults get _globalInferenceResults =>
       _compiler.globalInference.results;
 
   GlobalTypeInferenceElementResult _resultOf(Element e) =>
       _globalInferenceResults.resultOf(e);
 
   ConstantValue getConstantForSymbol(ir.SymbolLiteral node) {
     if (kernel.syntheticNodes.contains(node)) {
       return _backend.constantSystem.createSymbol(_compiler, node.value);
@@ skipping 41 matching lines @@
 
   Local getLocal(ir.VariableDeclaration variable) {
     // If this is a synthetic local, return the synthetic local
     if (variable.name == null) {
       return _syntheticLocals.putIfAbsent(
           variable, () => new SyntheticLocal("x", null));
     }
     return getElement(variable) as LocalElement;
   }
 
-  bool getCanThrow(ir.Node procedure) {
+  bool getCanThrow(ir.Node procedure, ClosedWorld closedWorld) {
     FunctionElement function = getElement(procedure);
-    return !_closedWorld.getCannotThrow(function);
+    return !closedWorld.getCannotThrow(function);
   }
 
   TypeMask returnTypeOf(ir.Member node) {
     return TypeMaskFactory.inferredReturnTypeForElement(
         getElement(node), _globalInferenceResults);
   }
 
-  SideEffects getSideEffects(ir.Node node) {
-    return _closedWorld.getSideEffectsOfElement(getElement(node));
+  SideEffects getSideEffects(ir.Node node, ClosedWorld closedWorld) {
+    return closedWorld.getSideEffectsOfElement(getElement(node));
   }
 
   CallStructure getCallStructure(ir.Arguments arguments) {
     int argumentCount = arguments.positional.length + arguments.named.length;
     List<String> namedArguments = arguments.named.map((e) => e.name).toList();
     return new CallStructure(argumentCount, namedArguments);
   }
 
   FunctionSignature getFunctionSignature(ir.FunctionNode function) {
     return getElement(function).asFunctionElement().functionSignature;
@@ skipping 41 matching lines @@
     return new Selector.getter(name);
   }
 
   Selector getSetterSelector(ir.PropertySet setter) {
     ir.Name irName = setter.name;
     Name name = new Name(
         irName.name, irName.isPrivate ? getElement(irName.library) : null);
     return new Selector.setter(name);
   }
 
-  TypeMask typeOfInvocation(ir.MethodInvocation send) {
+  TypeMask typeOfInvocation(ir.MethodInvocation send, ClosedWorld closedWorld) {
     ast.Node operatorNode = kernel.nodeToAstOperator[send];
     if (operatorNode != null) {
       return _resultOf(_target).typeOfOperator(operatorNode);
     }
     if (send.name.name == '[]=') {
-      return _compiler.closedWorld.commonMasks.dynamicType;
+      return closedWorld.commonMasks.dynamicType;
     }
     return _resultOf(_target).typeOfSend(getNode(send));
   }
 
   TypeMask typeOfGet(ir.PropertyGet getter) {
     return _resultOf(_target).typeOfSend(getNode(getter));
   }
 
-  TypeMask typeOfSet(ir.PropertySet setter) {
-    return _closedWorld.commonMasks.dynamicType;
+  TypeMask typeOfSet(ir.PropertySet setter, ClosedWorld closedWorld) {
+    return closedWorld.commonMasks.dynamicType;
   }
 
   TypeMask typeOfSend(ir.Expression send) {
     assert(send is ir.InvocationExpression || send is ir.PropertyGet);
     return _resultOf(_target).typeOfSend(getNode(send));
   }
 
-  TypeMask typeOfListLiteral(Element owner, ir.ListLiteral listLiteral) {
+  TypeMask typeOfListLiteral(
+      Element owner, ir.ListLiteral listLiteral, ClosedWorld closedWorld) {
     ast.Node node = getNodeOrNull(listLiteral);
     if (node == null) {
       assertNodeIsSynthetic(listLiteral);
-      return _closedWorld.commonMasks.growableListType;
+      return closedWorld.commonMasks.growableListType;
     }
     return _resultOf(owner).typeOfNewList(getNode(listLiteral)) ??
-        _closedWorld.commonMasks.dynamicType;
+        closedWorld.commonMasks.dynamicType;
   }
 
   TypeMask typeOfIterator(ir.ForInStatement forInStatement) {
     return _resultOf(_target).typeOfIterator(getNode(forInStatement));
   }
 
   TypeMask typeOfIteratorCurrent(ir.ForInStatement forInStatement) {
     return _resultOf(_target).typeOfIteratorCurrent(getNode(forInStatement));
   }
 
   TypeMask typeOfIteratorMoveNext(ir.ForInStatement forInStatement) {
     return _resultOf(_target).typeOfIteratorMoveNext(getNode(forInStatement));
   }
 
-  bool isJsIndexableIterator(ir.ForInStatement forInStatement) {
+  bool isJsIndexableIterator(
+      ir.ForInStatement forInStatement, ClosedWorld closedWorld) {
     TypeMask mask = typeOfIterator(forInStatement);
     return mask != null &&
-        mask.satisfies(_backend.helpers.jsIndexableClass, _closedWorld) &&
+        mask.satisfies(_backend.helpers.jsIndexableClass, closedWorld) &&
         // String is indexable but not iterable.
-        !mask.satisfies(_backend.helpers.jsStringClass, _closedWorld);
+        !mask.satisfies(_backend.helpers.jsStringClass, closedWorld);
   }
 
-  bool isFixedLength(TypeMask mask) {
-    JavaScriptBackend backend = _compiler.backend;
+  bool isFixedLength(TypeMask mask, ClosedWorld closedWorld) {
     if (mask.isContainer && (mask as ContainerTypeMask).length != null) {
       // A container on which we have inferred the length.
       return true;
     }
     // TODO(sra): Recognize any combination of fixed length indexables.
-    if (mask.containsOnly(
-            _closedWorld.backendClasses.fixedListImplementation) ||
-        mask.containsOnly(
-            _closedWorld.backendClasses.constListImplementation) ||
-        mask.containsOnlyString(_closedWorld) ||
-        _closedWorld.commonMasks.isTypedArray(mask)) {
+    if (mask.containsOnly(closedWorld.backendClasses.fixedListImplementation) ||
+        mask.containsOnly(closedWorld.backendClasses.constListImplementation) ||
+        mask.containsOnlyString(closedWorld) ||
+        closedWorld.commonMasks.isTypedArray(mask)) {
       return true;
     }
     return false;
   }
 
   TypeMask inferredIndexType(ir.ForInStatement forInStatement) {
     return TypeMaskFactory.inferredTypeForSelector(new Selector.index(),
         typeOfIterator(forInStatement), _globalInferenceResults);
   }
 
   TypeMask inferredTypeOf(ir.Member node) {
     return TypeMaskFactory.inferredTypeForElement(
         getElement(node), _globalInferenceResults);
   }
 
   TypeMask selectorTypeOf(Selector selector, TypeMask mask) {
     return TypeMaskFactory.inferredTypeForSelector(
         selector, mask, _globalInferenceResults);
   }
 
-  TypeMask typeFromNativeBehavior(native.NativeBehavior nativeBehavior) {
-    return TypeMaskFactory.fromNativeBehavior(nativeBehavior, _closedWorld);
+  TypeMask typeFromNativeBehavior(
+      native.NativeBehavior nativeBehavior, ClosedWorld closedWorld) {
+    return TypeMaskFactory.fromNativeBehavior(nativeBehavior, closedWorld);
   }
 
   ConstantValue getConstantFor(ir.Node node) {
     ConstantValue constantValue =
         _backend.constants.getConstantValueForNode(getNode(node), elements);
     assert(invariant(getNode(node), constantValue != null,
         message: 'No constant computed for $node'));
     return constantValue;
   }
 
@@ skipping 550 matching lines @@
     astAdapter.reporter.internalError(
         CURRENT_ELEMENT_SPANNABLE, "Unexpected constant target: $element.");
     return null;
   }
 
   @override
   ConstantExpression visitStringLiteral(ir.StringLiteral node) {
     return new StringConstantExpression(node.value);
   }
 }