Revert "Move dart2js from sdk/lib/_internal/compiler to pkg/compiler"

pkg/compiler/lib/src/resolved_visitor.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 dart2js;
-
-abstract class ResolvedVisitor<R> extends Visitor<R> {
-  TreeElements elements;
-
-  ResolvedVisitor(this.elements);
-
-  R visitSend(Send node) {
-    Element element = elements[node];
-    if (elements.isAssert(node)) {
-      return visitAssert(node);
-    } else if (elements.isTypeLiteral(node)) {
-      return visitTypeLiteralSend(node);
-    } else if (node.isSuperCall) {
-      return visitSuperSend(node);
-    } else if (node.isOperator) {
-      return visitOperatorSend(node);
-    } else if (node.isPropertyAccess) {
-      if (!Elements.isUnresolved(element) && element.impliesType) {
-        return visitTypePrefixSend(node);
-      } else {
-        return visitGetterSend(node);
-      }
-    } else if (element != null && Initializers.isConstructorRedirect(node)) {
-      return visitStaticSend(node);
-    } else if (Elements.isClosureSend(node, element)) {
-      return visitClosureSend(node);
-    } else {
-      if (Elements.isUnresolved(element)) {
-        if (element == null) {
-          // Example: f() with 'f' unbound.
-          // This can only happen inside an instance method.
-          return visitDynamicSend(node);
-        } else {
-          return visitStaticSend(node);
-        }
-      } else if (element.isInstanceMember) {
-        // Example: f() with 'f' bound to instance method.
-        return visitDynamicSend(node);
-      } else if (!element.isInstanceMember) {
-        // Example: A.f() or f() with 'f' bound to a static function.
-        // Also includes new A() or new A.named() which is treated like a
-        // static call to a factory.
-        return visitStaticSend(node);
-      } else {
-        internalError("Cannot generate code for send", node: node);
-        return null;
-      }
-    }
-  }
-
-  R visitSuperSend(Send node);
-  R visitOperatorSend(Send node);
-  R visitGetterSend(Send node);
-  R visitClosureSend(Send node);
-  R visitDynamicSend(Send node);
-  R visitStaticSend(Send node);
-
-  /// Visitor callback for a type literal.
-  R visitTypeLiteralSend(Send node);
-
-  /// Visitor callback for the class prefix of a static access, like `Foo` in
-  /// `Foo.staticField`.
-  // TODO(johnniwinther): Remove this when not needed by the dart backend.
-  R visitTypePrefixSend(Send node);
-
-  R visitAssert(Send node);
-
-  void internalError(String reason, {Node node});
-
-  R visitNode(Node node) {
-    internalError("Unhandled node", node: node);
-    return null;
-  }
-}