/*
* VariableDeclarationBackReference.java
*
* Copyright (c) 2013 Mike Strobel
*
* This source code is based on Mono.Cecil from Jb Evain, Copyright (c) Jb Evain;
* and ILSpy/ICSharpCode from SharpDevelop, Copyright (c) AlphaSierraPapa.
*
* This source code is subject to terms and conditions of the Apache License, Version 2.0.
* A copy of the license can be found in the License.html file at the root of this distribution.
* By using this source code in any fashion, you are agreeing to be bound by the terms of the
* Apache License, Version 2.0.
*
* You must not remove this notice, or any other, from this software.
*/
package com.strobel.decompiler.patterns;
import com.strobel.core.VerifyArgument;
import com.strobel.decompiler.languages.java.ast.AstNode;
import com.strobel.decompiler.languages.java.ast.AstNodeCollection;
import com.strobel.decompiler.languages.java.ast.Roles;
import com.strobel.decompiler.languages.java.ast.VariableDeclarationStatement;
import com.strobel.decompiler.languages.java.ast.VariableInitializer;
import static com.strobel.core.CollectionUtilities.lastOrDefault;
public final class DeclaredVariableBackReference extends Pattern {
private final String _referencedGroupName;
public DeclaredVariableBackReference(final String referencedGroupName) {
_referencedGroupName = VerifyArgument.notNull(referencedGroupName, "referencedGroupName");
}
public final String getReferencedGroupName() {
return _referencedGroupName;
}
@Override
public final boolean matches(final INode other, final Match match) {
if (other instanceof AstNode) {
final INode lastInGroup = lastOrDefault(match.get(_referencedGroupName));
if (lastInGroup instanceof VariableDeclarationStatement) {
final VariableDeclarationStatement referenced = (VariableDeclarationStatement) lastInGroup;
final AstNodeCollection<VariableInitializer> variables = referenced.getVariables();
return variables.hasSingleElement() &&
matchString(
variables.firstOrNullObject().getName(),
((AstNode) other).getChildByRole(Roles.IDENTIFIER).getName()
);
}
}
return false;
}
}