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/*******************************************************************************
* Copyright (c) 2006, 2010 Oracle. 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:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.common.core.internal.utility.jdt;
import org.eclipse.jdt.core.dom.ASTNode;
import org.eclipse.jdt.core.dom.Expression;
import org.eclipse.jpt.common.core.utility.jdt.DeclarationAnnotationAdapter;
import org.eclipse.jpt.common.core.utility.jdt.DeclarationAnnotationElementAdapter;
import org.eclipse.jpt.common.core.utility.jdt.ExpressionConverter;
import org.eclipse.jpt.common.core.utility.jdt.ModifiedDeclaration;
import org.eclipse.jpt.utility.internal.StringTools;
/**
* Wrap a declaration annotation element adapter that deals with AST
* expressions, converting them to/from various other objects.
*
* @param <T> the type of the object be passed to and returned by the adapter
*/
public class ConversionDeclarationAnnotationElementAdapter<T>
implements DeclarationAnnotationElementAdapter<T>
{
/**
* The wrapped adapter that returns and takes AST expressions.
*/
private final DeclarationAnnotationElementAdapter<Expression> adapter;
/**
* The converter that converts AST expressions to other objects
* (e.g. Strings).
*/
private final ExpressionConverter<T> converter;
// ********** constructors **********
/**
* The default element name is <code>value</code>.
*/
public ConversionDeclarationAnnotationElementAdapter(DeclarationAnnotationAdapter annotationAdapter, ExpressionConverter<T> converter) {
this(new ExpressionDeclarationAnnotationElementAdapter<Expression>(annotationAdapter), converter);
}
public ConversionDeclarationAnnotationElementAdapter(DeclarationAnnotationAdapter annotationAdapter, String elementName, ExpressionConverter<T> converter) {
this(new ExpressionDeclarationAnnotationElementAdapter<Expression>(annotationAdapter, elementName), converter);
}
public ConversionDeclarationAnnotationElementAdapter(DeclarationAnnotationElementAdapter<Expression> adapter, ExpressionConverter<T> converter) {
super();
this.adapter = adapter;
this.converter = converter;
}
// ********** DeclarationAnnotationElementAdapter implementation **********
public T getValue(ModifiedDeclaration declaration) {
Expression expression = this.adapter.getValue(declaration);
return this.converter.convert(expression);
}
public void setValue(T value, ModifiedDeclaration declaration) {
Expression expression;
try {
expression = this.converter.convert(value, declaration.getAst());
} catch (IllegalArgumentException ex) {
// if there is a problem converting the 'value' to an Expression we get this exception
return; // don't set the value if it is "illegal"
}
this.adapter.setValue(expression, declaration);
}
public Expression getExpression(ModifiedDeclaration declaration) {
return this.adapter.getExpression(declaration);
}
public ASTNode getAstNode(ModifiedDeclaration declaration) {
return this.adapter.getAstNode(declaration);
}
@Override
public String toString() {
return StringTools.buildToStringFor(this, this.adapter);
}
// ********** factory static methods **********
/**
* The default element name is <code>value</code>;
* the default expression converter expects string constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<String> forStrings(DeclarationAnnotationAdapter annotationAdapter) {
return new ConversionDeclarationAnnotationElementAdapter<String>(annotationAdapter, StringExpressionConverter.instance());
}
/**
* The default expression converter expects string constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<String> forStrings(DeclarationAnnotationAdapter annotationAdapter, String elementName) {
return new ConversionDeclarationAnnotationElementAdapter<String>(annotationAdapter, elementName, StringExpressionConverter.instance());
}
/**
* The default element name is <code>value</code>;
* the default expression converter expects number constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<Integer> forNumbers(DeclarationAnnotationAdapter annotationAdapter) {
return new ConversionDeclarationAnnotationElementAdapter<Integer>(annotationAdapter, NumberIntegerExpressionConverter.instance());
}
/**
* The default expression converter expects number constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<Integer> forNumbers(DeclarationAnnotationAdapter annotationAdapter, String elementName) {
return new ConversionDeclarationAnnotationElementAdapter<Integer>(annotationAdapter, elementName, NumberIntegerExpressionConverter.instance());
}
/**
* The default element name is <code>value</code>;
* the default expression converter expects boolean constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<Boolean> forBooleans(DeclarationAnnotationAdapter annotationAdapter) {
return new ConversionDeclarationAnnotationElementAdapter<Boolean>(annotationAdapter, BooleanExpressionConverter.instance());
}
/**
* The default expression converter expects boolean constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<Boolean> forBooleans(DeclarationAnnotationAdapter annotationAdapter, String elementName) {
return new ConversionDeclarationAnnotationElementAdapter<Boolean>(annotationAdapter, elementName, BooleanExpressionConverter.instance());
}
/**
* The default element name is <code>value</code>;
* the default expression converter expects character constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<String> forCharacters(DeclarationAnnotationAdapter annotationAdapter) {
return new ConversionDeclarationAnnotationElementAdapter<String>(annotationAdapter, CharacterStringExpressionConverter.instance());
}
/**
* The default expression converter expects character constant expressions.
*/
public static ConversionDeclarationAnnotationElementAdapter<String> forCharacters(DeclarationAnnotationAdapter annotationAdapter, String elementName) {
return new ConversionDeclarationAnnotationElementAdapter<String>(annotationAdapter, elementName, CharacterStringExpressionConverter.instance());
}
}
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