Move JsInteropAnalysis.onQueueClosed to AnnotationProcessor.processJsInteropAnnotation

pkg/compiler/lib/src/js_backend/js_interop_analysis.dart

 // Copyright (c) 2015, 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.
 
 /// Analysis to determine how to generate code for typed JavaScript interop.
 library compiler.src.js_backend.js_interop_analysis;
 
-import '../common.dart';
-import '../constants/values.dart'
-    show ConstantValue, ConstructedConstantValue, StringConstantValue;
 import '../elements/resolution_types.dart'
     show ResolutionDartType, ResolutionDynamicType, ResolutionFunctionType;
-import '../diagnostics/messages.dart' show MessageKind;
-import '../elements/elements.dart'
-    show
-        ClassElement,
-        Element,
-        FieldElement,
-        LibraryElement,
-        ParameterElement,
-        MemberElement,
-        MethodElement,
-        MetadataAnnotation;
 import '../js/js.dart' as jsAst;
 import '../js/js.dart' show js;
 import '../universe/selector.dart' show Selector;
 import '../universe/world_builder.dart' show SelectorConstraints;
 import 'js_backend.dart' show JavaScriptBackend;
 
 class JsInteropAnalysis {
   final JavaScriptBackend backend;
 
-  /// The resolved [FieldElement] for `Js.name`.
-  FieldElement nameField;
-  bool enabledJsInterop = false;
-
-  /// Whether the backend is currently processing the codegen queue.
-  bool _inCodegen = false;
-
   JsInteropAnalysis(this.backend);
 
-  void onQueueClosed() {
-    if (_inCodegen) return;
-
-    if (backend.compiler.commonElements.jsAnnotationClass != null) {
-      ClassElement cls = backend.compiler.commonElements.jsAnnotationClass;
-      nameField = cls.lookupMember('name');
-      backend.compiler.libraryLoader.libraries
-          .forEach(processJsInteropAnnotationsInLibrary);
-    }
-  }
-
-  void onCodegenStart() {
-    _inCodegen = true;
-  }
-
-  /// Resolves the metadata of [element] and returns the name of the `JS(...)`
-  /// annotation for js interop, if found.
-  String processJsInteropAnnotation(Element element) {
-    for (MetadataAnnotation annotation in element.implementation.metadata) {
-      // TODO(johnniwinther): Avoid processing unresolved elements.
-      if (annotation.constant == null) continue;
-      ConstantValue constant =
-          backend.compiler.constants.getConstantValue(annotation.constant);
-      if (constant == null || constant is! ConstructedConstantValue) continue;
-      ConstructedConstantValue constructedConstant = constant;
-      if (constructedConstant.type.element ==
-          backend.compiler.commonElements.jsAnnotationClass) {
-        ConstantValue value = constructedConstant.fields[nameField];
-        String name;
-        if (value.isString) {
-          StringConstantValue stringValue = value;
-          name = stringValue.primitiveValue.slowToString();
-        } else {
-          // TODO(jacobr): report a warning if the value is not a String.
-          name = '';
-        }
-        enabledJsInterop = true;
-        return name;
-      }
-    }
-    return null;
-  }
-
-  bool hasAnonymousAnnotation(Element element) {
-    if (backend.compiler.commonElements.jsAnonymousClass == null) return false;
-    return element.metadata.any((MetadataAnnotation annotation) {
-      ConstantValue constant =
-          backend.compiler.constants.getConstantValue(annotation.constant);
-      if (constant == null || constant is! ConstructedConstantValue)
-        return false;
-      ConstructedConstantValue constructedConstant = constant;
-      return constructedConstant.type.element ==
-          backend.compiler.commonElements.jsAnonymousClass;
-    });
-  }
-
-  void _checkFunctionParameters(MethodElement fn) {
-    if (fn.hasFunctionSignature &&
-        fn.functionSignature.optionalParametersAreNamed) {
-      backend.reporter.reportErrorMessage(
-          fn,
-          MessageKind.JS_INTEROP_METHOD_WITH_NAMED_ARGUMENTS,
-          {'method': fn.name});
-    }
-  }
-
-  void processJsInteropAnnotationsInLibrary(LibraryElement library) {
-    String libraryName = processJsInteropAnnotation(library);
-    if (libraryName != null) {
-      backend.nativeDataBuilder.setJsInteropLibraryName(library, libraryName);
-    }
-    library.implementation.forEachLocalMember((Element element) {
-      if (element is MemberElement) {
-        String memberName = processJsInteropAnnotation(element);
-        if (memberName != null) {
-          backend.nativeDataBuilder.setJsInteropMemberName(element, memberName);
-        }
-
-        if (element is MethodElement) {
-          if (!backend.nativeData.isJsInteropMember(element)) return;
-          _checkFunctionParameters(element);
-        }
-      }
-
-      if (!element.isClass) return;
-
-      ClassElement classElement = element;
-      String className = processJsInteropAnnotation(classElement);
-      if (className != null) {
-        backend.nativeDataBuilder
-            .setJsInteropClassName(classElement, className);
-      }
-      if (!backend.nativeData.isJsInteropClass(classElement)) return;
-
-      // Skip classes that are completely unreachable. This should only happen
-      // when all of jsinterop types are unreachable from main.
-      if (!backend.compiler.resolutionWorldBuilder
-          .isImplemented(classElement)) {
-        return;
-      }
-
-      if (!classElement.implementsInterface(
-          backend.compiler.commonElements.jsJavaScriptObjectClass)) {
-        backend.reporter.reportErrorMessage(classElement,
-            MessageKind.JS_INTEROP_CLASS_CANNOT_EXTEND_DART_CLASS, {
-          'cls': classElement.name,
-          'superclass': classElement.superclass.name
-        });
-      }
-
-      classElement
-          .forEachMember((ClassElement classElement, MemberElement member) {
-        String memberName = processJsInteropAnnotation(member);
-        if (memberName != null) {
-          backend.nativeDataBuilder.setJsInteropMemberName(member, memberName);
-        }
-
-        if (!member.isSynthesized &&
-            backend.nativeData.isJsInteropClass(classElement) &&
-            member is MethodElement) {
-          MethodElement fn = member;
-          if (!fn.isExternal &&
-              !fn.isAbstract &&
-              !fn.isConstructor &&
-              !fn.isStatic) {
-            backend.reporter.reportErrorMessage(
-                fn,
-                MessageKind.JS_INTEROP_CLASS_NON_EXTERNAL_MEMBER,
-                {'cls': classElement.name, 'member': member.name});
-          }
-
-          if (fn.isFactoryConstructor && hasAnonymousAnnotation(classElement)) {
-            fn.functionSignature
-                .orderedForEachParameter((ParameterElement parameter) {
-              if (!parameter.isNamed) {
-                backend.reporter.reportErrorMessage(
-                    parameter,
-                    MessageKind
-                        .JS_OBJECT_LITERAL_CONSTRUCTOR_WITH_POSITIONAL_ARGUMENTS,
-                    {'parameter': parameter.name, 'cls': classElement.name});
-              }
-            });
-          } else {
-            _checkFunctionParameters(fn);
-          }
-        }
-      });
-    });
-  }
-
   jsAst.Statement buildJsInteropBootstrap() {
-    if (!enabledJsInterop) return null;
+    if (!backend.nativeBasicData.isJsInteropUsed) return null;
     List<jsAst.Statement> statements = <jsAst.Statement>[];
     backend.compiler.codegenWorldBuilder.forEachInvokedName(
         (String name, Map<Selector, SelectorConstraints> selectors) {
       selectors.forEach((Selector selector, SelectorConstraints constraints) {
         if (selector.isClosureCall) {
           // TODO(jacobr): support named arguments.
           if (selector.namedArgumentCount > 0) return;
           int argumentCount = selector.argumentCount;
           var candidateParameterNames =
               'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
@@ skipping 13 matching lines @@
   ResolutionFunctionType buildJsFunctionType() {
     // TODO(jacobr): consider using codegenWorldBuilder.isChecks to determine the
     // range of positional arguments that need to be supported by JavaScript
     // function types.
     return new ResolutionFunctionType.synthesized(
         const ResolutionDynamicType(),
         [],
         new List<ResolutionDartType>.filled(16, const ResolutionDynamicType()));
   }
 }