dart2dart: Method and constructor calls in new backend.

sdk/lib/_internal/compiler/implementation/dart_backend/dart_codegen.dart

Index: sdk/lib/_internal/compiler/implementation/dart_backend/dart_codegen.dart
diff --git a/sdk/lib/_internal/compiler/implementation/dart_backend/dart_codegen.dart b/sdk/lib/_internal/compiler/implementation/dart_backend/dart_codegen.dart
index 48ecccd6b0d9ca8025f93091281f100b68b6a862..b1d358abb744120f1529858a37fab2a859423b5f 100644
--- a/sdk/lib/_internal/compiler/implementation/dart_backend/dart_codegen.dart
+++ b/sdk/lib/_internal/compiler/implementation/dart_backend/dart_codegen.dart
@@ -163,6 +163,54 @@ class ASTEmitter extends tree.Visitor<dynamic, Expression> {
                ..element = exp.target;
   }
 
+  Expression visitInvokeMethod(tree.InvokeMethod exp) {
+    // TODO: Derive named arguments from selector?
+    Expression receiver = visitExpression(exp.receiver);
+    List args = exp.arguments.map(visitExpression).toList(growable:false);
+    switch (exp.selector.kind) {
+      case SelectorKind.CALL:
+        return new CallMethod(receiver, exp.selector.name, args);
+
+      case SelectorKind.OPERATOR:
+        if (args.length == 0) {
+          String name = exp.selector.name;
+          if (name == 'unary-') {
+            name = '-';
+          }
+          return new UnaryOperator(name, receiver);
+        }
+        return new BinaryOperator(receiver, exp.selector.name, args[0]);
+
+      case SelectorKind.GETTER:
+        return new FieldExpression(receiver, exp.selector.name);
+
+      case SelectorKind.SETTER:
+        return new Assignment(
+            new FieldExpression(receiver, exp.selector.name),
+            '=',
+            args[0]);
+
+      case SelectorKind.INDEX:
+        Expression e = new IndexExpression(receiver, args[0]);
+        if (args.length == 2) {
+          e = new Assignment(e, '=', args[1]);
+        }
+        return e;
+
+      default:
+        throw "Unexpected selector in InvokeMethod: ${exp.selector.kind}";
+    }
+  }
+
+  Expression visitInvokeConstructor(tree.InvokeConstructor exp) {
+    List args = exp.arguments.map(visitExpression).toList(growable:false);
+    FunctionElement constructor = exp.target;
+    String name = constructor.name.isEmpty ? null : constructor.name;
+    return new CallNew(emitType(exp.type), args, constructorName: name)
+               ..constructor = constructor
+               ..dartType = exp.type;
+  }
+
   Expression visitVariable(tree.Variable exp) {
     return new Identifier(exp.name)
                ..element = exp.element;