| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.AstToTextHelper; |
| import org.codehaus.groovy.ast.ClassHelper; |
| import org.codehaus.groovy.ast.GroovyCodeVisitor; |
| import org.codehaus.groovy.ast.Parameter; |
| import org.codehaus.groovy.ast.VariableScope; |
| import org.codehaus.groovy.ast.stmt.Statement; |
| import org.codehaus.groovy.runtime.InvokerHelper; |
| |
| /** |
| * Represents a closure expression such as <pre>{ statement }</pre> |
| * or { i {@code ->} statement } or { i, x, String y {@code ->} statement } |
| */ |
| public class ClosureExpression extends Expression { |
| |
| private final 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; |
| } |
| |
| /** |
| * @return an array of zero (for implicit it) or more (when explicit args given) parameters or null otherwise (representing explicit no args) |
| */ |
| public Parameter[] getParameters() { |
| return parameters; |
| } |
| |
| /** |
| * @return {@code true} if one or more explicit parameters are supplied |
| */ |
| 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 "{ -> ... }"; |
| } |
| } |
| } |