dartfmt pkg/compiler

pkg/compiler/lib/src/ssa/interceptor_simplifier.dart

 // Copyright (c) 2013, 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.
 
 import '../common/codegen.dart' show CodegenRegistry, CodegenWorkItem;
 import '../compiler.dart' show Compiler;
 import '../constants/constant_system.dart';
 import '../constants/values.dart';
 import '../elements/elements.dart';
 import '../js_backend/backend_helpers.dart' show BackendHelpers;
@@ skipping 78 matching lines @@
     // TODO(sra): Also do self-interceptor rewrites on a per-use basis.
 
     HInstruction constant = tryComputeConstantInterceptor(
         invoke.inputs[1], interceptor.interceptedClasses);
     if (constant != null) {
       invoke.changeUse(interceptor, constant);
     }
     return false;
   }
 
-  bool canUseSelfForInterceptor(HInstruction receiver,
-                                Set<ClassElement> interceptedClasses) {
-
+  bool canUseSelfForInterceptor(
+      HInstruction receiver, Set<ClassElement> interceptedClasses) {
     if (receiver.canBePrimitive(compiler)) {
       // Primitives always need interceptors.
       return false;
     }
     if (receiver.canBeNull() &&
         interceptedClasses.contains(helpers.jsNullClass)) {
       // Need the JSNull interceptor.
       return false;
     }
 
     // All intercepted classes extend `Interceptor`, so if the receiver can't be
     // a class extending `Interceptor` then it can be called directly.
     return new TypeMask.nonNullSubclass(helpers.jsInterceptorClass, classWorld)
         .isDisjoint(receiver.instructionType, classWorld);
   }
 
   HInstruction tryComputeConstantInterceptor(
-      HInstruction input,
-      Set<ClassElement> interceptedClasses) {
+      HInstruction input, Set<ClassElement> interceptedClasses) {
     if (input == graph.explicitReceiverParameter) {
       // If `explicitReceiverParameter` is set it means the current method is an
       // interceptor method, and `this` is the interceptor.  The caller just did
       // `getInterceptor(foo).currentMethod(foo)` to enter the current method.
       return graph.thisInstruction;
     }
 
     ClassElement constantInterceptor = tryComputeConstantInterceptorFromType(
         input.instructionType, interceptedClasses);
 
     if (constantInterceptor == null) return null;
 
     // If we just happen to be in an instance method of the constant
     // interceptor, `this` is a shorter alias.
     if (constantInterceptor == work.element.enclosingClass &&
         graph.thisInstruction != null) {
       return graph.thisInstruction;
     }
 
     ConstantValue constant =
         new InterceptorConstantValue(constantInterceptor.thisType);
     return graph.addConstant(constant, compiler);
   }
 
   ClassElement tryComputeConstantInterceptorFromType(
-      TypeMask type,
-      Set<ClassElement> interceptedClasses) {
-
+      TypeMask type, Set<ClassElement> interceptedClasses) {
     if (type.isNullable) {
       if (type.isNull) {
         return helpers.jsNullClass;
       }
     } else if (type.containsOnlyInt(classWorld)) {
       return helpers.jsIntClass;
     } else if (type.containsOnlyDouble(classWorld)) {
       return helpers.jsDoubleClass;
     } else if (type.containsOnlyBool(classWorld)) {
       return helpers.jsBoolClass;
@@ skipping 64 matching lines @@
 
     Set<ClassElement> interceptedClasses;
     HInstruction dominator = findDominator(node.usedBy);
     // If there is a call that dominates all other uses, we can use just the
     // selector of that instruction.
     if (dominator is HInvokeDynamic &&
         dominator.isCallOnInterceptor(compiler) &&
         node == dominator.receiver &&
         useCount(dominator, node) == 1) {
       interceptedClasses =
-            backend.getInterceptedClassesOn(dominator.selector.name);
+          backend.getInterceptedClassesOn(dominator.selector.name);
 
       // If we found that we need number, we must still go through all
       // uses to check if they require int, or double.
       if (interceptedClasses.contains(helpers.jsNumberClass) &&
           !(interceptedClasses.contains(helpers.jsDoubleClass) ||
-            interceptedClasses.contains(helpers.jsIntClass))) {
+              interceptedClasses.contains(helpers.jsIntClass))) {
         for (HInstruction user in node.usedBy) {
           if (user is! HInvoke) continue;
           Set<ClassElement> intercepted =
               backend.getInterceptedClassesOn(user.selector.name);
           if (intercepted.contains(helpers.jsIntClass)) {
             interceptedClasses.add(helpers.jsIntClass);
           }
           if (intercepted.contains(helpers.jsDoubleClass)) {
             interceptedClasses.add(helpers.jsDoubleClass);
           }
         }
       }
     } else {
       interceptedClasses = new Set<ClassElement>();
       for (HInstruction user in node.usedBy) {
         if (user is HInvokeDynamic &&
             user.isCallOnInterceptor(compiler) &&
             node == user.receiver &&
             useCount(user, node) == 1) {
-          interceptedClasses.addAll(
-              backend.getInterceptedClassesOn(user.selector.name));
+          interceptedClasses
+              .addAll(backend.getInterceptedClassesOn(user.selector.name));
         } else if (user is HInvokeSuper &&
-                   user.isCallOnInterceptor(compiler) &&
-                   node == user.receiver &&
-                   useCount(user, node) == 1) {
-          interceptedClasses.addAll(
-              backend.getInterceptedClassesOn(user.selector.name));
+            user.isCallOnInterceptor(compiler) &&
+            node == user.receiver &&
+            useCount(user, node) == 1) {
+          interceptedClasses
+              .addAll(backend.getInterceptedClassesOn(user.selector.name));
         } else {
           // Use a most general interceptor for other instructions, example,
           // is-checks and escaping interceptors.
           interceptedClasses.addAll(backend.interceptedClasses);
           break;
         }
       }
     }
 
     node.interceptedClasses = interceptedClasses;
@@ skipping 27 matching lines @@
     // interceptor.
     if (receiver.canBeNull() && !node.isConditionalConstantInterceptor) {
       if (!interceptedClasses.contains(helpers.jsNullClass)) {
         // Can use `(receiver && C)` only if receiver is either null or truthy.
         if (!(receiver.canBePrimitiveNumber(compiler) ||
             receiver.canBePrimitiveBoolean(compiler) ||
             receiver.canBePrimitiveString(compiler))) {
           ClassElement interceptorClass = tryComputeConstantInterceptorFromType(
               receiver.instructionType.nonNullable(), interceptedClasses);
           if (interceptorClass != null) {
-            HInstruction constantInstruction =
-                graph.addConstant(
-                    new InterceptorConstantValue(interceptorClass.thisType),
-                    compiler);
+            HInstruction constantInstruction = graph.addConstant(
+                new InterceptorConstantValue(interceptorClass.thisType),
+                compiler);
             node.conditionalConstantInterceptor = constantInstruction;
             constantInstruction.usedBy.add(node);
             return false;
           }
         }
       }
     }
 
     // Try creating a one-shot interceptor or optimized is-check
     if (compiler.options.hasIncrementalSupport) return false;
@@ skipping 23 matching lines @@
           return replaceUserWith(instanceofCheck);
         }
       }
     } else if (user is HInvokeDynamic) {
       if (node == user.inputs[0]) {
         // Replace the user with a [HOneShotInterceptor].
         HConstant nullConstant = graph.addConstantNull(compiler);
         List<HInstruction> inputs = new List<HInstruction>.from(user.inputs);
         inputs[0] = nullConstant;
         HOneShotInterceptor oneShotInterceptor = new HOneShotInterceptor(
-            user.selector, user.mask,
-            inputs, user.instructionType, interceptedClasses);
+            user.selector,
+            user.mask,
+            inputs,
+            user.instructionType,
+            interceptedClasses);
         oneShotInterceptor.sourceInformation = user.sourceInformation;
         oneShotInterceptor.sourceElement = user.sourceElement;
         return replaceUserWith(oneShotInterceptor);
       }
     }
 
     return false;
   }
 
   bool rewriteToUseSelfAsInterceptor(HInterceptor node, HInstruction receiver) {
     for (HInstruction user in node.usedBy.toList()) {
       if (user is HIs) {
         user.changeUse(node, receiver);
       } else {
         // Use the potentially self-argument as new receiver. Note that the
         // self-argument could potentially have a tighter type than the
         // receiver which was the input to the interceptor.
         assert(user.inputs[0] == node);
         assert(receiver.nonCheck() == user.inputs[1].nonCheck());
         user.changeUse(node, user.inputs[1]);
       }
     }
     return false;
   }
 
   bool visitOneShotInterceptor(HOneShotInterceptor node) {
-    HInstruction constant = tryComputeConstantInterceptor(
-        node.inputs[1], node.interceptedClasses);
+    HInstruction constant =
+        tryComputeConstantInterceptor(node.inputs[1], node.interceptedClasses);
 
     if (constant == null) return false;
 
     Selector selector = node.selector;
     TypeMask mask = node.mask;
     HInstruction instruction;
     if (selector.isGetter) {
-      instruction = new HInvokeDynamicGetter(
-          selector,
-          mask,
-          node.element,
-          <HInstruction>[constant, node.inputs[1]],
-          node.instructionType);
+      instruction = new HInvokeDynamicGetter(selector, mask, node.element,
+          <HInstruction>[constant, node.inputs[1]], node.instructionType);
     } else if (selector.isSetter) {
       instruction = new HInvokeDynamicSetter(
           selector,
           mask,
           node.element,
           <HInstruction>[constant, node.inputs[1], node.inputs[2]],
           node.instructionType);
     } else {
       List<HInstruction> inputs = new List<HInstruction>.from(node.inputs);
       inputs[0] = constant;
       instruction = new HInvokeDynamicMethod(
           selector, mask, inputs, node.instructionType, true);
     }
 
     HBasicBlock block = node.block;
     block.addAfter(node, instruction);
     block.rewrite(node, instruction);
     return true;
   }
 }