added VariableAsFunctionResolvedCall containing two calls (for variable and for 'invoke' function)

compiler/frontend/src/org/jetbrains/jet/lang/resolve/calls/VariableAsFunctionResolvedCall.java

+/*
+ * Copyright 2010-2012 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.jet.lang.resolve.calls;
+
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.jet.lang.descriptors.*;
+import org.jetbrains.jet.lang.resolve.TemporaryBindingTrace;
+import org.jetbrains.jet.lang.resolve.scopes.receivers.ReceiverDescriptor;
+import org.jetbrains.jet.lang.types.JetType;
+import org.jetbrains.jet.lang.types.lang.JetStandardClasses;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author svtk
+ */
+public class VariableAsFunctionResolvedCall implements ResolvedCallWithTrace<FunctionDescriptor> {
+    private final ResolvedCallWithTrace<FunctionDescriptor> functionCall;
+    private final ResolvedCallWithTrace<VariableDescriptor> variableCall;
+    private final VariableAsFunctionDescriptor variableAsFunctionDescriptor;
+
+    public VariableAsFunctionResolvedCall(@NotNull ResolvedCallWithTrace<FunctionDescriptor> functionCall,
+            @NotNull ResolvedCallWithTrace<VariableDescriptor> variableCall) {
+        this.functionCall = functionCall;
+        this.variableCall = variableCall;
+        if (JetStandardClasses.isFunctionType(variableCall.getResultingDescriptor().getType())) {
+            variableAsFunctionDescriptor = VariableAsFunctionDescriptor.create(variableCall.getResultingDescriptor());
+        }
+        else {
+            variableAsFunctionDescriptor = null;
+        }
+    }
+
+    public ResolvedCallWithTrace<FunctionDescriptor> getFunctionCall() {
+        return functionCall;
+    }
+
+    public ResolvedCallWithTrace<VariableDescriptor> getVariableCall() {
+        return variableCall;
+    }
+
+    @NotNull
+    @Override
+    public FunctionDescriptor getCandidateDescriptor() {
+        return variableAsFunctionDescriptor != null ? variableAsFunctionDescriptor : functionCall.getResultingDescriptor();
+    }
+
+    @NotNull
+    @Override
+    public FunctionDescriptor getResultingDescriptor() {
+        return variableAsFunctionDescriptor != null ? variableAsFunctionDescriptor : functionCall.getResultingDescriptor();
+    }
+
+    @NotNull
+    @Override
+    public ReceiverDescriptor getReceiverArgument() {
+        ReceiverDescriptor receiverArgument = variableCall.getReceiverArgument();
+        return receiverArgument.exists() ? receiverArgument : functionCall.getReceiverArgument();
+    }
+
+    @NotNull
+    @Override
+    public ReceiverDescriptor getThisObject() {
+        return variableCall.getThisObject();
+    }
+
+    @NotNull
+    @Override
+    public Map<ValueParameterDescriptor, ResolvedValueArgument> getValueArguments() {
+        return functionCall.getValueArguments();
+    }
+
+    @NotNull
+    @Override
+    public List<ResolvedValueArgument> getValueArgumentsByIndex() {
+        return functionCall.getValueArgumentsByIndex();
+    }
+
+    @NotNull
+    @Override
+    public Map<TypeParameterDescriptor, JetType> getTypeArguments() {
+        return functionCall.getTypeArguments();
+    }
+
+    @NotNull
+    @Override
+    public ResolutionStatus getStatus() {
+        if (variableCall.getStatus() == ResolutionStatus.SUCCESS) {
+            return functionCall.getStatus();
+        }
+        return variableCall.getStatus();
+    }
+
+    @Override
+    public boolean isDirty() {
+        return functionCall.isDirty();
+    }
+
+    @Override
+    public TemporaryBindingTrace getTrace() {
+        //functionCall.trace is temporary trace above variableCall.trace and is committed already
+        return variableCall.getTrace();
+    }
+}