Create ElementAnnotation objects prior to resolution.

pkg/analyzer/lib/src/generated/element_resolver.dart

 // Copyright (c) 2014, 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 analyzer.src.generated.element_resolver;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/visitor.dart';
@@ skipping 187 matching lines @@
   }
 
   @override
   Object visitBreakStatement(BreakStatement node) {
     node.target = _lookupBreakOrContinueTarget(node, node.label, false);
     return null;
   }
 
   @override
   Object visitClassDeclaration(ClassDeclaration node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitClassTypeAlias(ClassTypeAlias node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitCommentReference(CommentReference node) {
     Identifier identifier = node.identifier;
     if (identifier is SimpleIdentifier) {
       SimpleIdentifier simpleIdentifier = identifier;
       Element element = _resolveSimpleIdentifier(simpleIdentifier);
       if (element == null) {
@@ skipping 104 matching lines @@
         constructorElement.redirectedConstructor = redirectedElement;
       } else {
         // set redirected generative constructor
         for (ConstructorInitializer initializer in node.initializers) {
           if (initializer is RedirectingConstructorInvocation) {
             ConstructorElement redirectedElement = initializer.staticElement;
             constructorElement.redirectedConstructor = redirectedElement;
           }
         }
       }
-      setMetadata(constructorElement, node);
+      resolveMetadata(node);
     }
     return null;
   }
 
   @override
   Object visitConstructorFieldInitializer(ConstructorFieldInitializer node) {
     SimpleIdentifier fieldName = node.fieldName;
     ClassElement enclosingClass = _resolver.enclosingClass;
     FieldElement fieldElement = enclosingClass.getField(fieldName.name);
     fieldName.staticElement = fieldElement;
@@ skipping 35 matching lines @@
   }
 
   @override
   Object visitContinueStatement(ContinueStatement node) {
     node.target = _lookupBreakOrContinueTarget(node, node.label, true);
     return null;
   }
 
   @override
   Object visitDeclaredIdentifier(DeclaredIdentifier node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitEnumDeclaration(EnumDeclaration node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitExportDirective(ExportDirective node) {
     ExportElement exportElement = node.element;
     if (exportElement != null) {
       // The element is null when the URI is invalid
       // TODO(brianwilkerson) Figure out whether the element can ever be
       // something other than an ExportElement
       _resolveCombinators(exportElement.exportedLibrary, node.combinators);
-      setMetadata(exportElement, node);
+      resolveMetadata(node);
     }
     return null;
   }
 
   @override
   Object visitFieldFormalParameter(FieldFormalParameter node) {
-    _setMetadataForParameter(node.element, node);
+    _resolveMetadataForParameter(node.element, node);
     return super.visitFieldFormalParameter(node);
   }
 
   @override
   Object visitFunctionDeclaration(FunctionDeclaration node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitFunctionExpressionInvocation(FunctionExpressionInvocation node) {
     Expression function = node.function;
     DartType staticInvokeType = _instantiateGenericMethod(
         function.staticType, node.typeArguments, node);
     DartType propagatedInvokeType = _instantiateGenericMethod(
         function.propagatedType, node.typeArguments, node);
@@ skipping 11 matching lines @@
     parameters = _computeCorrespondingParameters(
         node.argumentList, propagatedInvokeType);
     if (parameters != null) {
       node.argumentList.correspondingPropagatedParameters = parameters;
     }
     return null;
   }
 
   @override
   Object visitFunctionTypeAlias(FunctionTypeAlias node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitFunctionTypedFormalParameter(FunctionTypedFormalParameter node) {
-    _setMetadataForParameter(node.element, node);
+    _resolveMetadataForParameter(node.element, node);
     return null;
   }
 
   @override
   Object visitImportDirective(ImportDirective node) {
     SimpleIdentifier prefixNode = node.prefix;
     if (prefixNode != null) {
       String prefixName = prefixNode.name;
       for (PrefixElement prefixElement in _definingLibrary.prefixes) {
         if (prefixElement.displayName == prefixName) {
           prefixNode.staticElement = prefixElement;
           break;
         }
       }
     }
     ImportElement importElement = node.element;
     if (importElement != null) {
       // The element is null when the URI is invalid
       LibraryElement library = importElement.importedLibrary;
       if (library != null) {
         _resolveCombinators(library, node.combinators);
       }
-      setMetadata(importElement, node);
+      resolveMetadata(node);
     }
     return null;
   }
 
   @override
   Object visitIndexExpression(IndexExpression node) {
     Expression target = node.realTarget;
     DartType staticType = _getStaticType(target);
     DartType propagatedType = _getPropagatedType(target);
     String getterMethodName = sc.TokenType.INDEX.lexeme;
@@ skipping 72 matching lines @@
     List<ParameterElement> parameters = _resolveArgumentsToFunction(
         node.isConst, argumentList, invokedConstructor);
     if (parameters != null) {
       argumentList.correspondingStaticParameters = parameters;
     }
     return null;
   }
 
   @override
   Object visitLibraryDirective(LibraryDirective node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitMethodDeclaration(MethodDeclaration node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitMethodInvocation(MethodInvocation node) {
     SimpleIdentifier methodName = node.methodName;
     //
     // Synthetic identifiers have been already reported during parsing.
     //
     if (methodName.isSynthetic) {
@@ skipping 217 matching lines @@
       }
       String targetTypeName = targetType == null ? null : targetType.name;
       _resolver.reportErrorForNode(StaticTypeWarningCode.UNDEFINED_SUPER_METHOD,
           methodName, [methodName.name, targetTypeName]);
     }
     return null;
   }
 
   @override
   Object visitPartDirective(PartDirective node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitPartOfDirective(PartOfDirective node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitPostfixExpression(PostfixExpression node) {
     Expression operand = node.operand;
     String methodName = _getPostfixOperator(node);
     DartType staticType = _getStaticType(operand);
     MethodElement staticMethod = _lookUpMethod(operand, staticType, methodName);
     node.staticElement = staticMethod;
@@ skipping 181 matching lines @@
     List<ParameterElement> parameters =
         _resolveArgumentsToFunction(false, argumentList, element);
     if (parameters != null) {
       argumentList.correspondingStaticParameters = parameters;
     }
     return null;
   }
 
   @override
   Object visitSimpleFormalParameter(SimpleFormalParameter node) {
-    _setMetadataForParameter(node.element, node);
+    _resolveMetadataForParameter(node.element, node);
     return null;
   }
 
   @override
   Object visitSimpleIdentifier(SimpleIdentifier node) {
     //
     // Synthetic identifiers have been already reported during parsing.
     //
     if (node.isSynthetic) {
       return null;
@@ skipping 133 matching lines @@
   Object visitSuperExpression(SuperExpression node) {
     if (!_isSuperInValidContext(node)) {
       _resolver.reportErrorForNode(
           CompileTimeErrorCode.SUPER_IN_INVALID_CONTEXT, node);
     }
     return super.visitSuperExpression(node);
   }
 
   @override
   Object visitTypeParameter(TypeParameter node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   @override
   Object visitVariableDeclaration(VariableDeclaration node) {
-    setMetadata(node.element, node);
+    resolveMetadata(node);
     return null;
   }
 
   /**
    * Given that we have found code to invoke the given [element], return the
    * error code that should be reported, or `null` if no error should be
    * reported. The [target] is the target of the invocation, or `null` if there
    * was no target. The flag [useStaticContext] should be `true` if the
    * invocation is in a static constant (does not have access to instance state.
    */
@@ skipping 1007 matching lines @@
           // identifier. Consider re-writing the AST.
           return element;
         }
       }
     }
     // TODO(brianwilkerson) Report this error.
     return null;
   }
 
   /**
+   * Given a [node] that can have annotations associated with it, resolve the
+   * annotations in the element model representing annotations to the node.
+   */
+  void _resolveMetadataForParameter(
+      Element element, NormalFormalParameter node) {
+    _resolveAnnotations(node.metadata);
+  }
+
+  /**
    * Given that we are accessing a property of the given [targetType] with the
    * given [propertyName], return the element that represents the property. The
    * [target] is the target of the invocation ('e').
    */
   ExecutableElement _resolveProperty(
       Expression target, DartType targetType, SimpleIdentifier propertyName) {
     ExecutableElement memberElement = null;
     if (propertyName.inSetterContext()) {
       memberElement = _lookUpSetter(target, targetType, propertyName.name);
     }
@@ skipping 196 matching lines @@
       DartType bound = type.element.bound;
       if (bound == null) {
         return _resolver.typeProvider.objectType;
       }
       return bound;
     }
     return type;
   }
 
   /**
-   * Given a [node] that can have annotations associated with it and the
-   * [element] to which that node has been resolved, create the annotations in
-   * the element model representing the annotations on the node.
-   */
-  void _setMetadataForParameter(Element element, NormalFormalParameter node) {
-    if (element is! ElementImpl) {
-      return;
-    }
-    List<ElementAnnotationImpl> annotationList =
-        new List<ElementAnnotationImpl>();
-    _addAnnotations(annotationList, node.metadata);
-    if (!annotationList.isEmpty) {
-      (element as ElementImpl).metadata = annotationList;
-    }
-  }
-
-  /**
    * Return `true` if we should report an error as a result of looking up a
    * [member] in the given [type] and not finding any member.
    */
   bool _shouldReportMissingMember(DartType type, Element member) {
     if (member != null || type == null || type.isDynamic || type.isBottom) {
       return false;
     }
     return true;
   }
 
   /**
    * Checks whether the given [expression] is a reference to a class. If it is
    * then the element representing the class is returned, otherwise `null` is
    * returned.
    */
   static ClassElementImpl getTypeReference(Expression expression) {
     if (expression is Identifier) {
       Element staticElement = expression.staticElement;
       if (staticElement is ClassElementImpl) {
         return staticElement;
       }
     }
     return null;
   }
 
   /**
-   * Given a [node] that can have annotations associated with it and the
-   * [element] to which that node has been resolved, create the annotations in
-   * the element model representing the annotations on the node.
+   * Given a [node] that can have annotations associated with it, resolve the
+   * annotations in the element model representing the annotations on the node.
    */
-  static void setMetadata(Element element, AnnotatedNode node) {
-    if (element is! ElementImpl) {
-      return;
-    }
-    List<ElementAnnotationImpl> annotationList = <ElementAnnotationImpl>[];
-    _addAnnotations(annotationList, node.metadata);
+  static void resolveMetadata(AnnotatedNode node) {
+    _resolveAnnotations(node.metadata);
     if (node is VariableDeclaration && node.parent is VariableDeclarationList) {
       VariableDeclarationList list = node.parent as VariableDeclarationList;
-      _addAnnotations(annotationList, list.metadata);
+      _resolveAnnotations(list.metadata);
       if (list.parent is FieldDeclaration) {
         FieldDeclaration fieldDeclaration = list.parent as FieldDeclaration;
-        _addAnnotations(annotationList, fieldDeclaration.metadata);
+        _resolveAnnotations(fieldDeclaration.metadata);
       } else if (list.parent is TopLevelVariableDeclaration) {
         TopLevelVariableDeclaration variableDeclaration =
             list.parent as TopLevelVariableDeclaration;
-        _addAnnotations(annotationList, variableDeclaration.metadata);
-      }
-    }
-    if (!annotationList.isEmpty) {
-      (element as ElementImpl).metadata = annotationList;
-    }
-  }
-
-  /**
-   * Generate annotation elements for each of the annotations in the
-   * [annotationList] and add them to the given list of [annotations].
-   */
-  static void _addAnnotations(List<ElementAnnotationImpl> annotationList,
-      NodeList<Annotation> annotations) {
-    int annotationCount = annotations.length;
-    for (int i = 0; i < annotationCount; i++) {
-      Annotation annotation = annotations[i];
-      Element resolvedElement = annotation.element;
-      if (resolvedElement != null) {
-        ElementAnnotationImpl elementAnnotation =
-            new ElementAnnotationImpl(resolvedElement);
-        annotation.elementAnnotation = elementAnnotation;
-        annotationList.add(elementAnnotation);
+        _resolveAnnotations(variableDeclaration.metadata);
       }
     }
   }
 
   /**
    * Return `true` if the given [identifier] is the return type of a constructor
    * declaration.
    */
   static bool _isConstructorReturnType(SimpleIdentifier identifier) {
     AstNode parent = identifier.parent;
@@ skipping 30 matching lines @@
       }
       if (node is ConstructorFieldInitializer) {
         return false;
       }
       if (node is MethodDeclaration) {
         return !node.isStatic;
       }
     }
     return false;
   }
+
+  /**
+   * Resolve each of the annotations in the given list of [annotations].
+   */
+  static void _resolveAnnotations(NodeList<Annotation> annotations) {
+    for (Annotation annotation in annotations) {
+      ElementAnnotationImpl elementAnnotation = annotation.elementAnnotation;
+      elementAnnotation.element = annotation.element;
+    }
+  }
 }
 
 /**
  * An identifier that can be used to look up names in the lexical scope when
  * there is no identifier in the AST structure. There is no identifier in the
  * AST when the parser could not distinguish between a method invocation and an
  * invocation of a top-level function imported with a prefix.
  */
 class SyntheticIdentifier extends IdentifierImpl {
   /**
@@ skipping 43 matching lines @@
 
   @override
   Element get staticElement => null;
 
   @override
   accept(AstVisitor visitor) => null;
 
   @override
   void visitChildren(AstVisitor visitor) {}
 }