/*
* Copyright 2003-2007 the original author or authors.
*
* 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 org.codehaus.groovy.ast.expr;
import java.util.Collections;
import java.util.List;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.GroovyCodeVisitor;
/**
* Represents an array object construction either using a fixed size
* or an initializer expression
*
* @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
* @version $Revision: 20590 $
*/
public class ArrayExpression extends Expression {
private List<Expression> expressions;
private List<Expression> sizeExpression;
private ClassNode elementType;
private static ClassNode makeArray(ClassNode base, List<Expression> sizeExpression) {
ClassNode ret = base.makeArray();
if (sizeExpression == null) return ret;
int size = sizeExpression.size();
for (int i = 1; i < size; i++) {
ret = ret.makeArray();
}
return ret;
}
public ArrayExpression(ClassNode elementType, List<Expression> expressions, List<Expression> sizeExpression) {
//expect to get the elementType
super.setType(makeArray(elementType, sizeExpression));
if (expressions == null) expressions = Collections.emptyList();
this.elementType = elementType;
this.expressions = expressions;
this.sizeExpression = sizeExpression;
for (Object item : expressions) {
if (item != null && !(item instanceof Expression)) {
throw new ClassCastException("Item: " + item + " is not an Expression");
}
}
if (sizeExpression != null) {
for (Object item : sizeExpression) {
if (!(item instanceof Expression)) {
throw new ClassCastException("Item: " + item + " is not an Expression");
}
}
}
}
/**
* Creates an array using an initializer expression
*/
public ArrayExpression(ClassNode elementType, List<Expression> expressions) {
this(elementType, expressions, null);
}
public void addExpression(Expression expression) {
expressions.add(expression);
}
public List<Expression> getExpressions() {
return expressions;
}
public void visit(GroovyCodeVisitor visitor) {
visitor.visitArrayExpression(this);
}
public boolean isDynamic() {
return false;
}
public Expression transformExpression(ExpressionTransformer transformer) {
List<Expression> exprList = transformExpressions(expressions, transformer);
List<Expression> sizes = null;
if (sizeExpression != null) sizes = transformExpressions(sizeExpression, transformer);
Expression ret = new ArrayExpression(elementType, exprList, sizes);
ret.setSourcePosition(this);
return ret;
}
public Expression getExpression(int i) {
return expressions.get(i);
}
public ClassNode getElementType() {
return elementType;
}
public String getText() {
StringBuffer buffer = new StringBuffer("[");
boolean first = true;
for (Expression expression : expressions) {
if (first) {
first = false;
} else {
buffer.append(", ");
}
buffer.append(expression.getText());
}
buffer.append("]");
return buffer.toString();
}
public List<Expression> getSizeExpression() {
return sizeExpression;
}
public String toString() {
return super.toString() + expressions;
}
}