Support type literals as compile-time constants.

sdk/lib/_internal/compiler/implementation/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;
 
 /**
  * A special element for the extra parameter taken by intercepted
  * methods. We need to override [Element.computeType] because our
  * optimizers may look at its declared type.
@@ skipping 959 matching lines @@
       this.work = work,
       interceptors = builder.interceptors,
       methodInterceptionEnabled = true,
       graph = new HGraph(),
       stack = new List<HInstruction>(),
       activationVariables = new Map<Element, HLocalValue>(),
       jumpTargets = new Map<TargetElement, JumpHandler>(),
       parameters = new Map<Element, HInstruction>(),
       sourceElementStack = <Element>[work.element],
       inliningStack = <InliningState>[],
-      rti = builder.compiler.codegenWorld.rti,
+      rti = builder.backend.rti,
       super(work.resolutionTree) {
     localsHandler = new LocalsHandler(this);
   }
 
   static const MAX_INLINING_DEPTH = 3;
   static const MAX_INLINING_SOURCE_SIZE = 128;
   List<InliningState> inliningStack;
   Element returnElement;
   DartType returnType;
   bool inTryStatement = false;
@@ skipping 1648 matching lines @@
       bool isNot = false;
       // TODO(ngeoffray): Duplicating pattern in resolver. We should
       // add a new kind of node.
       if (typeAnnotation == null) {
         typeAnnotation = argument.asSend().receiver;
         isNot = true;
       }
 
       DartType type = elements.getType(typeAnnotation);
       HInstruction typeInfo = null;
-      if (compiler.codegenWorld.rti.hasTypeArguments(type)) {
+      if (rti.hasTypeArguments(type)) {
         pushInvokeHelper1(interceptors.getGetRuntimeTypeInfo(), expression);
         typeInfo = pop();
       }
       if (type.element.isTypeVariable()) {
         // TODO(karlklose): We currently answer true to any is check
         // involving a type variable -- both is T and is !T -- until
         // we have a proper implementation of reified generics.
         stack.add(graph.addConstantBool(true, constantSystem));
       } else {
         HInstruction instruction;
@@ skipping 714 matching lines @@
   }
 
   HConstant addConstantString(Node node, String string) {
     DartString dartString = new DartString.literal(string);
     Constant constant = constantSystem.createString(dartString, node);
     return graph.addConstant(constant);
   }
 
   visitTypeReferenceSend(Send node) {
     Element element = elements[node];
-    HInstruction name;
-    Element helper =
-        compiler.findHelper(const SourceString('createRuntimeType'));
-    if (element.isClass()) {
-      String string = rti.generateRuntimeTypeString(element, 0);
-      name = addConstantString(node.selector, string);
-    } else if (element.isTypedef()) {
-      // TODO(karlklose): implement support for type variables in typedefs.
-      name = addConstantString(node.selector, rti.getName(element));
+    if (element.isClass() || element.isTypedef()) {
+      // TODO(karlklose): add type representation
+      ConstantHandler handler = compiler.constantHandler;
+      Constant constant = handler.compileNodeWithDefinitions(node, elements);
+      stack.add(graph.addConstant(constant));
     } else if (element.isTypeVariable()) {
       // TODO(6248): implement support for type variables.
       compiler.unimplemented('first class type for type variable', node: node);
     } else {
-      internalError('unexpected element $element', node: node);
+      internalError('unexpected element kind $element', node: node);
     }
-    pushInvokeHelper1(helper, name);
     if (node.isCall) {
       // This send is of the form 'e(...)', where e is resolved to a type
       // reference. We create a regular closure call on the result of the type
       // reference instead of creating a NoSuchMethodError to avoid pulling it
       // in if it is not used (e.g., in a try/catch).
       HInstruction target = pop();
       Selector selector = elements.getSelector(node);
       List<HInstruction> inputs = <HInstruction>[target];
       addDynamicSendArgumentsToList(node, inputs);
       push(new HInvokeClosure(selector, inputs));
@@ skipping 1548 matching lines @@
           new HSubGraphBlockInformation(elseBranch.graph));
 
     HBasicBlock conditionStartBlock = conditionBranch.block;
     conditionStartBlock.setBlockFlow(info, joinBlock);
     SubGraph conditionGraph = conditionBranch.graph;
     HIf branch = conditionGraph.end.last;
     assert(branch is HIf);
     branch.blockInformation = conditionStartBlock.blockFlow;
   }
 }