dartfmt pkg/compiler

pkg/compiler/lib/src/js_emitter/native_emitter.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.js_emitter;
 
 class NativeEmitter {
-
   // TODO(floitsch): the native-emitter should not know about ClassBuilders.
   final Map<Element, full_js_emitter.ClassBuilder> cachedBuilders;
 
   final CodeEmitterTask emitterTask;
 
   // Whether the application contains native classes.
   bool hasNativeClasses = false;
 
   // Caches the native subtypes of a native class.
   Map<ClassElement, List<ClassElement>> subtypes;
@@ skipping 45 matching lines @@
    *
    * [classes] contains native classes, mixin applications, and user subclasses
    * of native classes.
    *
    * [interceptorClassesNeededByConstants] contains the interceptors that are
    * referenced by constants.
    *
    * [classesModifiedByEmitRTISupport] contains the list of classes that must
    * exist, because runtime-type support adds information to the class.
    */
-  Set<Class> prepareNativeClasses(List<Class> classes,
+  Set<Class> prepareNativeClasses(
+      List<Class> classes,
       Set<ClassElement> interceptorClassesNeededByConstants,
       Set<ClassElement> classesModifiedByEmitRTISupport) {
     assert(classes.every((Class cls) => cls != null));
 
     hasNativeClasses = classes.isNotEmpty;
 
     // Compute a pre-order traversal of the subclass forest.  We actually want a
     // post-order traversal but it is easier to compute the pre-order and use it
     // in reverse.
     List<Class> preOrder = <Class>[];
@@ skipping 45 matching lines @@
       } else if (interceptorClassesNeededByConstants.contains(classElement)) {
         needed = true;
       } else if (classesModifiedByEmitRTISupport.contains(classElement)) {
         // TODO(9556): Remove this test when [emitRuntimeTypeSupport] no longer
         // adds information to a class prototype or constructor.
         needed = true;
       } else if (extensionPoints.containsKey(cls)) {
         needed = true;
       }
       if (backend.isJsInterop(classElement)) {
-        needed = true;  // TODO(jacobr): we don't need all interop classes.
+        needed = true; // TODO(jacobr): we don't need all interop classes.
       } else if (cls.isNative &&
-                 backend.nativeData.hasNativeTagsForcedNonLeaf(classElement)) {
+          backend.nativeData.hasNativeTagsForcedNonLeaf(classElement)) {
         needed = true;
         nonLeafClasses.add(cls);
       }
 
       if (needed || neededClasses.contains(cls)) {
         neededClasses.add(cls);
         neededClasses.add(cls.superclass);
         nonLeafClasses.add(cls.superclass);
       }
     }
 
     // Collect all the tags that map to each native class.
 
     Map<Class, Set<String>> leafTags = new Map<Class, Set<String>>();
     Map<Class, Set<String>> nonleafTags = new Map<Class, Set<String>>();
 
     for (Class cls in classes) {
       if (!cls.isNative) continue;
       if (backend.isJsInterop(cls.element)) continue;
       List<String> nativeTags =
           backend.nativeData.getNativeTagsOfClass(cls.element);
 
-      if (nonLeafClasses.contains(cls) ||
-          extensionPoints.containsKey(cls)) {
+      if (nonLeafClasses.contains(cls) || extensionPoints.containsKey(cls)) {
         nonleafTags
             .putIfAbsent(cls, () => new Set<String>())
             .addAll(nativeTags);
       } else {
         Class sufficingInterceptor = cls;
         while (!neededClasses.contains(sufficingInterceptor)) {
           sufficingInterceptor = sufficingInterceptor.superclass;
         }
         if (sufficingInterceptor == objectClass) {
           sufficingInterceptor = jsInterceptorClass;
@@ skipping 53 matching lines @@
     Class nativeAncestorOf(Class cls) {
       return nativeSuperclassOf(cls.superclass);
     }
 
     Map<Class, List<Class>> map = new Map<Class, List<Class>>();
 
     for (Class cls in classes) {
       if (cls.isNative) continue;
       Class nativeAncestor = nativeAncestorOf(cls);
       if (nativeAncestor != null) {
-        map
-          .putIfAbsent(nativeAncestor, () => <Class>[])
-          .add(cls);
+        map.putIfAbsent(nativeAncestor, () => <Class>[]).add(cls);
       }
     }
     return map;
   }
 
   bool isTrivialClass(Class cls) {
     bool needsAccessor(Field field) {
       return field.needsGetter ||
           field.needsUncheckedSetter ||
           field.needsCheckedSetter;
     }
 
-    return
-        cls.methods.isEmpty &&
+    return cls.methods.isEmpty &&
         cls.isChecks.isEmpty &&
         cls.callStubs.isEmpty &&
         !cls.superclass.isMixinApplication &&
         !cls.fields.any(needsAccessor);
   }
 
-  void potentiallyConvertDartClosuresToJs(
-      List<jsAst.Statement> statements,
-      FunctionElement member,
-      List<jsAst.Parameter> stubParameters) {
+  void potentiallyConvertDartClosuresToJs(List<jsAst.Statement> statements,
+      FunctionElement member, List<jsAst.Parameter> stubParameters) {
     FunctionSignature parameters = member.functionSignature;
     Element converter = helpers.closureConverter;
     jsAst.Expression closureConverter =
         emitterTask.staticFunctionAccess(converter);
     parameters.forEachParameter((ParameterElement parameter) {
       String name = parameter.name;
       // If [name] is not in [stubParameters], then the parameter is an optional
       // parameter that was not provided for this stub.
       for (jsAst.Parameter stubParameter in stubParameters) {
         if (stubParameter.name == name) {
           DartType type = parameter.type.unaliased;
           if (type is FunctionType) {
             // The parameter type is a function type either directly or through
             // typedef(s).
             FunctionType functionType = type;
             int arity = functionType.computeArity();
-            statements.add(
-                js.statement('# = #(#, $arity)',
-                    [name, closureConverter, name]));
+            statements.add(js
+                .statement('# = #(#, $arity)', [name, closureConverter, name]));
             break;
           }
         }
       }
     });
   }
 
   List<jsAst.Statement> generateParameterStubStatements(
       FunctionElement member,
       bool isInterceptedMethod,
@@ skipping 17 matching lines @@
     jsAst.Expression receiver;
     List<jsAst.Expression> arguments;
 
     assert(invariant(member, nativeMethods.contains(member)));
     // When calling a JS method, we call it with the native name, and only the
     // arguments up until the last one provided.
     target = backend.nativeData.getFixedBackendName(member);
 
     if (isInterceptedMethod) {
       receiver = argumentsBuffer[0];
-      arguments = argumentsBuffer.sublist(1,
-          indexOfLastOptionalArgumentInParameters + 1);
+      arguments = argumentsBuffer.sublist(
+          1, indexOfLastOptionalArgumentInParameters + 1);
     } else {
       // Native methods that are not intercepted must be static.
       assert(invariant(member, member.isStatic));
-      arguments = argumentsBuffer.sublist(0,
-          indexOfLastOptionalArgumentInParameters + 1);
+      arguments = argumentsBuffer.sublist(
+          0, indexOfLastOptionalArgumentInParameters + 1);
       if (backend.isJsInterop(member)) {
         // fixedBackendPath is allowed to have the form foo.bar.baz for
         // interop. This template is uncached to avoid possibly running out of
         // memory when Dart2Js is run in server mode. In reality the risk of
         // caching these templates causing an issue  is very low as each class
         // and library that uses typed JavaScript interop will create only 1
         // unique template.
-        receiver = js.uncachedExpressionTemplate(
-            backend.namer.fixedBackendPath(member)).instantiate([]);
+        receiver = js
+            .uncachedExpressionTemplate(backend.namer.fixedBackendPath(member))
+            .instantiate([]);
       } else {
         receiver = js('this');
       }
     }
-    statements.add(
-        js.statement('return #.#(#)', [receiver, target, arguments]));
+    statements
+        .add(js.statement('return #.#(#)', [receiver, target, arguments]));
 
     return statements;
   }
 
   bool isSupertypeOfNativeClass(ClassElement element) {
     if (backend.classesMixedIntoInterceptedClasses.contains(element)) {
       return true;
     }
 
     return subtypes[element] != null;
   }
 
   bool requiresNativeIsCheck(Element element) {
     // TODO(sra): Remove this function.  It determines if a native type may
     // satisfy a check against [element], in which case an interceptor must be
     // used.  We should also use an interceptor if the check can't be satisfied
     // by a native class in case we get a native instance that tries to spoof
     // the type info.  i.e the criteria for whether or not to use an interceptor
     // is whether the receiver can be native, not the type of the test.
     if (element == null || !element.isClass) return false;
     ClassElement cls = element;
     if (backend.isNativeOrExtendsNative(cls)) return true;
     return isSupertypeOfNativeClass(element);
   }
-}
+}