NameFunction.java revision 56ed4167b942ec265f9cee70ac4d71d10b3835ce 
1/*
2 * Copyright (C) 2010 Google Inc.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.clearsilver.jsilver.functions.structure;
18
19import com.google.clearsilver.jsilver.data.Data;
20import com.google.clearsilver.jsilver.functions.NonEscapingFunction;
21import com.google.clearsilver.jsilver.values.Value;
22import static com.google.clearsilver.jsilver.values.Value.literalConstant;
23import static com.google.clearsilver.jsilver.values.Value.literalValue;
24import com.google.clearsilver.jsilver.values.VariableValue;
25
26/**
27 * Returns the Data variable name for a local variable alias.
28 */
29public class NameFunction extends NonEscapingFunction {
30
31  /**
32   * @param args A local variable
33   * @return Name (as string)
34   */
35  public Value execute(Value... args) {
36    Value value = args[0];
37    if (value instanceof VariableValue) {
38      VariableValue variableValue = (VariableValue) value;
39      Data variable = variableValue.getReference();
40      if (variable != null) {
41        return literalValue(variable.getSymlink().getName(), variableValue.getEscapeMode(),
42            variableValue.isPartiallyEscaped());
43      }
44    }
45    return literalConstant("", value);
46  }
47
48}
49