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1
52
53 package freemarker.template;
54
55 import java.util.List  ;
56 import java.util.ArrayList ;
57
58
65
66 final class GeneralPurposeNothing
67 implements TemplateBooleanModel, TemplateScalarModel, TemplateSequenceModel, TemplateHashModelEx, TemplateMethodModelEx {
68
69 private static final TemplateModel instance = new GeneralPurposeNothing();
70
71 private static final TemplateCollectionModel EMPTY_COLLECTION = new SimpleCollection(new ArrayList (0));
72
73 private GeneralPurposeNothing() {
74 }
75
76 static TemplateModel getInstance() {
77 return instance;
78 }
79
80 public String getAsString() {
81 return "";
82 }
83
84 public boolean getAsBoolean() {
85 return false;
86 }
87
88 public boolean isEmpty() {
89 return true;
90 }
91
92 public int size() {
93 return 0;
94 }
95
96 public TemplateModel get(int i) throws TemplateModelException {
97 throw new TemplateModelException("Empty list");
98 }
99
100 public TemplateModel get(String key) {
101 return null;
102 }
103
104 public Object exec(List args) {
105 return null;
106 }
107
108 public TemplateCollectionModel keys() {
109 return EMPTY_COLLECTION;
110 }
111
112 public TemplateCollectionModel values() {
113 return EMPTY_COLLECTION;
114 }
115 }
116 |
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