| /** |
| * 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.apache.atlas.groovy; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * Groovy expression that calls a method on an object. |
| */ |
| public class FunctionCallExpression extends AbstractFunctionExpression { |
| |
| private String functionName; |
| private List<GroovyExpression> arguments = new ArrayList<>(); |
| |
| public FunctionCallExpression(TraversalStepType type, String functionName, GroovyExpression... arguments) { |
| super(type, null); |
| this.functionName = functionName; |
| this.arguments.addAll(Arrays.asList(arguments)); |
| } |
| |
| public FunctionCallExpression(String functionName, GroovyExpression... arguments) { |
| super(null); |
| this.functionName = functionName; |
| this.arguments.addAll(Arrays.asList(arguments)); |
| } |
| |
| public FunctionCallExpression(TraversalStepType type, String functionName, List<GroovyExpression> arguments) { |
| super(type, null); |
| this.functionName = functionName; |
| this.arguments.addAll(arguments); |
| } |
| |
| public FunctionCallExpression(GroovyExpression target, String functionName, GroovyExpression... arguments) { |
| super(target); |
| this.functionName = functionName; |
| this.arguments.addAll(Arrays.asList(arguments)); |
| } |
| |
| public FunctionCallExpression(TraversalStepType type, GroovyExpression target, String functionName, |
| List<? extends GroovyExpression> arguments) { |
| super(type, target); |
| this.functionName = functionName; |
| this.arguments.addAll(arguments); |
| } |
| |
| public FunctionCallExpression(TraversalStepType type, GroovyExpression target, String functionName, |
| GroovyExpression... arguments) { |
| super(type, target); |
| this.functionName = functionName; |
| this.arguments.addAll(Arrays.asList(arguments)); |
| } |
| |
| public void addArgument(GroovyExpression expr) { |
| arguments.add(expr); |
| } |
| |
| public List<GroovyExpression> getArguments() { |
| return Collections.unmodifiableList(arguments); |
| } |
| |
| |
| public String getFunctionName() { |
| return functionName; |
| } |
| |
| @Override |
| public void generateGroovy(GroovyGenerationContext context) { |
| |
| if (getCaller() != null) { |
| getCaller().generateGroovy(context); |
| context.append("."); |
| } |
| context.append(functionName); |
| context.append("("); |
| Iterator<GroovyExpression> it = arguments.iterator(); |
| while (it.hasNext()) { |
| GroovyExpression expr = it.next(); |
| expr.generateGroovy(context); |
| if (it.hasNext()) { |
| context.append(","); |
| } |
| } |
| context.append(")"); |
| } |
| |
| @Override |
| public List<GroovyExpression> getChildren() { |
| List<GroovyExpression> result = new ArrayList<>(arguments.size() + 1); |
| if (getCaller() != null) { |
| result.add(getCaller()); |
| } |
| result.addAll(arguments); |
| return result; |
| } |
| |
| @Override |
| public GroovyExpression copy(List<GroovyExpression> newChildren) { |
| |
| if (getCaller() == null) { |
| return new FunctionCallExpression(getType(), functionName, newChildren); |
| } |
| |
| GroovyExpression newTarget = newChildren.get(0); |
| List<GroovyExpression> args = null; |
| if (newChildren.size() > 1) { |
| args = newChildren.subList(1, newChildren.size()); |
| } else { |
| args = Collections.emptyList(); |
| } |
| return new FunctionCallExpression(getType(), newTarget, functionName, args); |
| |
| } |
| |
| public void setArgument(int index, GroovyExpression value) { |
| if (index < 0 || index >= arguments.size()) { |
| throw new IllegalArgumentException("Invalid argIndex " + index); |
| } |
| arguments.set(index, value); |
| } |
| } |