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/*******************************************************************************
* Copyright (c) 2005, 2007 BEA Systems, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* tyeung@bea.com - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.apt.core.internal.declaration;
import com.sun.mirror.declaration.AnnotationMirror;
import com.sun.mirror.declaration.Modifier;
import com.sun.mirror.declaration.ParameterDeclaration;
import com.sun.mirror.type.TypeMirror;
import com.sun.mirror.util.DeclarationVisitor;
import com.sun.mirror.util.SourcePosition;
import java.lang.annotation.Annotation;
import java.util.Collection;
import java.util.Collections;
import org.eclipse.core.resources.IFile;
import org.eclipse.jdt.apt.core.internal.env.BaseProcessorEnv;
import org.eclipse.jdt.apt.core.internal.util.Factory;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.IBinding;
import org.eclipse.jdt.core.dom.IMethodBinding;
import org.eclipse.jdt.core.dom.IAnnotationBinding;
import org.eclipse.jdt.core.dom.ITypeBinding;
import org.eclipse.jdt.core.dom.SimpleName;
import org.eclipse.jdt.core.dom.SingleVariableDeclaration;
/**
* Represents a formal parameter that came from binary.
*/
public class BinaryParameterDeclarationImpl extends DeclarationImpl implements ParameterDeclaration
{
static final String ARG = "arg"; //$NON-NLS-1$
private final ITypeBinding _type;
private final ExecutableDeclarationImpl _executable;
private final int _paramIndex;
/**
* Parameter declaration from binary
*/
public BinaryParameterDeclarationImpl(ExecutableDeclarationImpl executable,
ITypeBinding typeBinding,
int index,
BaseProcessorEnv env)
{
super(typeBinding, env);
assert( typeBinding != null ) : "missing type binding"; //$NON-NLS-1$
assert( index >= 0 ) : "invalid index " + index; //$NON-NLS-1$
assert executable != null : "missing executable"; //$NON-NLS-1$
_type = typeBinding;
_paramIndex = index;
_executable = executable;
}
@Override
public void accept(DeclarationVisitor visitor)
{
visitor.visitParameterDeclaration(this);
}
@Override
public Collection<Modifier> getModifiers()
{
// TODO
// we don't store this information. so simply return nothing for now.
return Collections.emptyList();
}
@Override
public String getDocComment()
{
return null;
}
@Override
public String getSimpleName()
{
final SingleVariableDeclaration decl = (SingleVariableDeclaration)getAstNode();
if( decl == null ) return ARG + _paramIndex;
final SimpleName name = decl.getName();
return name == null ? ARG : name.toString();
}
@Override
public SourcePosition getPosition()
{
return null;
}
@Override
public TypeMirror getType()
{
final TypeMirror mirrorType = Factory.createTypeMirror(getTypeBinding(), _env);
if( mirrorType == null )
return Factory.createErrorClassType(getTypeBinding());
return mirrorType;
}
@Override
public <A extends Annotation> A getAnnotation(Class<A> annotationClass)
{
final IMethodBinding methodBinding = _executable.getDeclarationBinding();
final IAnnotationBinding[] paramAnnos = methodBinding.getParameterAnnotations(_paramIndex);
return _getAnnotation(annotationClass, paramAnnos);
}
@Override
public Collection<AnnotationMirror> getAnnotationMirrors()
{
final IMethodBinding methodBinding = _executable.getDeclarationBinding();
final IAnnotationBinding[] paramAnnos = methodBinding.getParameterAnnotations(_paramIndex);
return _getAnnotationMirrors(paramAnnos);
}
@Override
public boolean isBindingBased(){ return true; }
@Override
public boolean isFromSource(){ return false; }
@Override
ASTNode getAstNode(){ return null; }
@Override
public IFile getResource(){ return null; }
private ITypeBinding getTypeBinding(){ return _type; }
@Override
public MirrorKind kind(){ return MirrorKind.FORMAL_PARAMETER; }
@Override
public IBinding getDeclarationBinding(){
throw new UnsupportedOperationException("should never be invoked on a BinaryParameterDeclaration"); //$NON-NLS-1$
}
@Override
public boolean equals(Object obj){
if( obj instanceof BinaryParameterDeclarationImpl ){
final BinaryParameterDeclarationImpl otherParam = (BinaryParameterDeclarationImpl)obj;
return otherParam._paramIndex == _paramIndex &&
otherParam._executable.getDeclarationBinding().isEqualTo(_executable.getDeclarationBinding()) ;
}
return false;
}
@Override
public int hashCode(){
final String methodKey = _executable.getDeclarationBinding().getKey();
int hashcode = 0;
if( methodKey != null )
hashcode = methodKey.hashCode();
return hashcode + _paramIndex;
}
@Override
public String toString(){
final StringBuilder builder = new StringBuilder();
builder.append(getTypeBinding().getName());
builder.append(' ');
builder.append(getSimpleName());
return builder.toString();
}
}
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