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7    * "License"); you may not use this file except in compliance   *
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16   * specific language governing permissions and limitations      *
17   * under the License.                                           *
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19  
20  package org.apache.jsieve;
21  
22  import java.util.ArrayList;
23  import java.util.List;
24  
25  /**
26   * <p>
27   * A parsed representation of the RFC3028 BNF...
28   * </p>
29   * 
30   * <code>arguments = *argument [test / test-list]</code>
31   * 
32   * <p>
33   * Note that a test is represented as a test-list with a single element.
34   * </p>
35   * 
36   */
37  public class Arguments {
38      /**
39       * A List of the parsed Arguments
40       */
41      private List<Argument> fieldArgumentList;
42  
43      /**
44       * The parsed tests
45       */
46      private TestList fieldTestList;
47  
48      /**
49       * Constructor for Arguments.
50       */
51      private Arguments() {
52          super();
53      }
54  
55      /**
56       * Constructor for Arguments.
57       * 
58       * @param arguments
59       * @param testList
60       */
61      public Arguments(List<Argument> arguments, TestList testList) {
62          this();
63          setArgumentList(arguments);
64          setTestList(testList);
65      }
66  
67      /**
68       * Returns the arguments.
69       * 
70       * @return List
71       */
72      public List<Argument> getArgumentList() {
73          return fieldArgumentList;
74      }
75  
76      /**
77       * Returns the testList, lazily initialised if required.
78       * 
79       * @return TestList
80       */
81      public TestList getTestList() {
82          TestList testList = null;
83          if (null == (testList = getTestListBasic())) {
84              updateTestList();
85              return getTestList();
86          }
87          return testList;
88      }
89  
90      /**
91       * Returns true if there is a TestList and it has Tests. Saves triggering
92       * lazy initialisation.
93       * 
94       * @return boolean
95       */
96      public boolean hasTests() {
97          TestList testList = getTestListBasic();
98          return null != testList && !testList.isEmpty();
99      }
100 
101     /**
102      * Returns the testList.
103      * 
104      * @return TestList
105      */
106     private TestList getTestListBasic() {
107         return fieldTestList;
108     }
109 
110     /**
111      * Computes the testList.
112      * 
113      * @return TestList
114      */
115     protected TestList computeTestList() {
116         return new TestList(new ArrayList<Test>());
117     }
118 
119     /**
120      * Sets the arguments.
121      * 
122      * @param arguments
123      *            The arguments to set
124      */
125     protected void setArgumentList(List<Argument> arguments) {
126         fieldArgumentList = arguments;
127     }
128 
129     /**
130      * Sets the testList.
131      * 
132      * @param testList
133      *            The testList to set
134      */
135     protected void setTestList(TestList testList) {
136         fieldTestList = testList;
137     }
138 
139     /**
140      * Updates the TestList
141      */
142     protected void updateTestList() {
143         setTestList(computeTestList());
144     }
145 
146     /**
147      * @see java.lang.Object#toString()
148      */
149     public String toString() {
150         return "Arguments: " + getArgumentList().toString() + " Tests: "
151                 + (hasTests() ? getTestList().toString() : "null");
152     }
153 
154 }