/*
* Copyright 2013-2017 consulo.io
*
* 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 consulo.unity3d.csharp.psi.reference;
import org.jetbrains.annotations.NotNull;
import com.intellij.patterns.PsiElementPattern;
import com.intellij.patterns.StandardPatterns;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiReference;
import com.intellij.psi.PsiReferenceContributor;
import com.intellij.psi.PsiReferenceProvider;
import com.intellij.psi.PsiReferenceRegistrar;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.util.ArrayUtil;
import com.intellij.util.ProcessingContext;
import consulo.annotations.RequiredReadAction;
import consulo.csharp.lang.psi.CSharpCallArgument;
import consulo.csharp.lang.psi.CSharpReferenceExpression;
import consulo.csharp.lang.psi.CSharpTypeDeclaration;
import consulo.csharp.lang.psi.impl.CSharpTypeUtil;
import consulo.csharp.lang.psi.impl.source.CSharpConstantExpressionImpl;
import consulo.csharp.lang.psi.impl.source.CSharpMethodCallExpressionImpl;
import consulo.csharp.lang.psi.impl.source.resolve.type.CSharpTypeRefByQName;
import consulo.csharp.lang.psi.impl.source.resolve.type.CSharpTypeRefByTypeDeclaration;
import consulo.dotnet.psi.DotNetExpression;
import consulo.dotnet.resolve.DotNetTypeRef;
import consulo.unity3d.Unity3dTypes;
/**
* @author VISTALL
* @since 07-Jan-17
*/
public class Unity3dEventMethodReferenceProvider extends PsiReferenceContributor
{
private static final String[] ourEventMethodNames = {
"StartCoroutine",
"StopCoroutine",
"Invoke",
"InvokeRepeating",
"IsInvoking",
"CancelInvoke"
};
@Override
public void registerReferenceProviders(PsiReferenceRegistrar registrar)
{
PsiElementPattern.Capture<CSharpConstantExpressionImpl> pattern = StandardPatterns.psiElement(CSharpConstantExpressionImpl.class);
pattern = pattern.withParent(CSharpCallArgument.class);
pattern = pattern.withSuperParent(3, CSharpMethodCallExpressionImpl.class);
registrar.registerReferenceProvider(pattern, new PsiReferenceProvider()
{
@NotNull
@Override
@RequiredReadAction
public PsiReference[] getReferencesByElement(@NotNull PsiElement psiElement, @NotNull ProcessingContext processingContext)
{
CSharpConstantExpressionImpl constantExpression = (CSharpConstantExpressionImpl) psiElement;
// accept only strings
if(!constantExpression.isValidHost())
{
return PsiReference.EMPTY_ARRAY;
}
CSharpMethodCallExpressionImpl methodCallExpression = PsiTreeUtil.getParentOfType(constantExpression, CSharpMethodCallExpressionImpl.class);
assert methodCallExpression != null;
DotNetExpression callExpression = methodCallExpression.getCallExpression();
if(!(callExpression instanceof CSharpReferenceExpression))
{
return PsiReference.EMPTY_ARRAY;
}
String referenceName = ((CSharpReferenceExpression) callExpression).getReferenceName();
if(referenceName == null)
{
return PsiReference.EMPTY_ARRAY;
}
if(!ArrayUtil.contains(referenceName, ourEventMethodNames))
{
return PsiReference.EMPTY_ARRAY;
}
DotNetTypeRef targetTypeRef = DotNetTypeRef.ERROR_TYPE;
DotNetExpression qualifier = ((CSharpReferenceExpression) callExpression).getQualifier();
if(qualifier != null)
{
targetTypeRef = qualifier.toTypeRef(true);
}
else
{
CSharpTypeDeclaration type = PsiTreeUtil.getParentOfType(methodCallExpression, CSharpTypeDeclaration.class);
if(type != null)
{
targetTypeRef = new CSharpTypeRefByTypeDeclaration(type);
}
}
if(!CSharpTypeUtil.isInheritable(new CSharpTypeRefByQName(methodCallExpression, Unity3dTypes.UnityEngine.MonoBehaviour), targetTypeRef, methodCallExpression))
{
return PsiReference.EMPTY_ARRAY;
}
return new PsiReference[]{new Unity3dEventMethodReference(constantExpression)};
}
});
}
}