org.codehaus.groovy.ast.expr.ClosureExpression Maven / Gradle / Ivy
/*
* Copyright 2003-2010 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 org.codehaus.groovy.ast.*;
import org.codehaus.groovy.ast.stmt.Statement;
import org.codehaus.groovy.runtime.InvokerHelper;
/**
* Represents a closure expression such as { statement }
* or { i -> statement } or { i, x, String y -> statement }
*
* @author James Strachan
* @author Hamlet D'Arcy
* @version $Revision$
*/
public class ClosureExpression extends Expression {
private Parameter[] parameters;
private Statement code;
private VariableScope variableScope;
public ClosureExpression(Parameter[] parameters, Statement code) {
this.parameters = parameters;
this.code = code;
super.setType(ClassHelper.CLOSURE_TYPE.getPlainNodeReference());
}
public void visit(GroovyCodeVisitor visitor) {
visitor.visitClosureExpression(this);
}
public Expression transformExpression(ExpressionTransformer transformer) {
return this;
}
public String toString() {
return super.toString() + InvokerHelper.toString(parameters) + "{ " + code + " }";
}
/**
* This gets the code statement of the closure. You can read this method to find out what actions
* the closure is going to perform.
*
* @return the code statement of the closure
*/
public Statement getCode() {
return code;
}
/**
* This sets the code statement of the closure. You can use this method in order to add more actions
* during the closure execution.
*
* @param code the new Statement
*/
public void setCode(Statement code) {
this.code = code;
}
public Parameter[] getParameters() {
return parameters;
}
public boolean isParameterSpecified() {
return parameters != null && parameters.length > 0;
}
public VariableScope getVariableScope() {
return variableScope;
}
public void setVariableScope(VariableScope variableScope) {
this.variableScope = variableScope;
}
@Override
public String getText() {
String paramText = AstToTextHelper.getParametersText(parameters);
if (paramText.length() > 0) {
return "{ " + paramText + " -> ... }";
} else {
return "{ -> ... }";
}
}
}
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