001 /*
002 * Copyright 2010-2015 JetBrains s.r.o.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017 package org.jetbrains.kotlin.resolve.calls.tasks;
018
019 import com.intellij.psi.PsiElement;
020 import org.jetbrains.annotations.NotNull;
021 import org.jetbrains.kotlin.builtins.FunctionTypesKt;
022 import org.jetbrains.kotlin.descriptors.CallableDescriptor;
023 import org.jetbrains.kotlin.psi.Call;
024 import org.jetbrains.kotlin.psi.KtExpression;
025 import org.jetbrains.kotlin.psi.KtReferenceExpression;
026 import org.jetbrains.kotlin.psi.KtSimpleNameExpression;
027 import org.jetbrains.kotlin.resolve.BindingContext;
028 import org.jetbrains.kotlin.resolve.BindingTrace;
029 import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall;
030 import org.jetbrains.kotlin.types.KotlinType;
031
032 import java.util.Collection;
033
034 import static org.jetbrains.kotlin.diagnostics.Errors.FUNCTION_EXPECTED;
035 import static org.jetbrains.kotlin.diagnostics.Errors.NO_RECEIVER_ALLOWED;
036 import static org.jetbrains.kotlin.resolve.BindingContext.CALL;
037 import static org.jetbrains.kotlin.resolve.BindingContext.RESOLVED_CALL;
038
039 public class TracingStrategyForInvoke extends AbstractTracingStrategy {
040 private final KotlinType calleeType;
041
042 public TracingStrategyForInvoke(
043 @NotNull KtExpression reference,
044 @NotNull Call call,
045 @NotNull KotlinType calleeType
046 ) {
047 super(reference, call);
048 this.calleeType = calleeType;
049 }
050
051 @Override
052 public void bindCall(@NotNull BindingTrace trace, @NotNull Call call) {
053 // If reference is a simple name, it's 'variable as function call' case ('foo(a, b)' where 'foo' is a variable).
054 // The outer call is bound ('foo(a, b)'), while 'invoke' call for this case is 'foo.invoke(a, b)' and shouldn't be bound.
055 if (reference instanceof KtSimpleNameExpression) return;
056 trace.record(CALL, reference, call);
057 }
058
059 @Override
060 public <D extends CallableDescriptor> void bindReference(
061 @NotNull BindingTrace trace, @NotNull ResolvedCall<D> resolvedCall
062 ) {
063 PsiElement callElement = call.getCallElement();
064 if (callElement instanceof KtReferenceExpression) {
065 trace.record(BindingContext.REFERENCE_TARGET, (KtReferenceExpression) callElement, resolvedCall.getCandidateDescriptor());
066 }
067 }
068
069 @Override
070 public <D extends CallableDescriptor> void bindResolvedCall(
071 @NotNull BindingTrace trace, @NotNull ResolvedCall<D> resolvedCall
072 ) {
073 if (reference instanceof KtSimpleNameExpression) return;
074 trace.record(RESOLVED_CALL, call, resolvedCall);
075 }
076
077 @Override
078 public void unresolvedReference(@NotNull BindingTrace trace) {
079 functionExpectedOrNoReceiverAllowed(trace);
080 }
081
082 @Override
083 public <D extends CallableDescriptor> void unresolvedReferenceWrongReceiver(
084 @NotNull BindingTrace trace, @NotNull Collection<? extends ResolvedCall<D>> candidates
085 ) {
086 functionExpectedOrNoReceiverAllowed(trace);
087 }
088
089 private void functionExpectedOrNoReceiverAllowed(BindingTrace trace) {
090 if (FunctionTypesKt.isNonExtensionFunctionType(calleeType)) {
091 trace.report(NO_RECEIVER_ALLOWED.on(reference));
092 }
093 else {
094 trace.report(FUNCTION_EXPECTED.on(reference, reference, calleeType));
095 }
096 }
097 }