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1
23
24 package org.xquark.xquery.parser;
25
26 import java.util.ArrayList  ;
27
28 import org.xquark.xquery.parser.util.Constants;
29 import org.xquark.xquery.typing.TypeException;
30
31 public class Variable extends XQueryExpression implements Cloneable {
32 private static final String RCSRevision = "$Revision: 1.32 $";
33 private static final String RCSName = "$Name: $";
34
35 protected SequenceType typeDeclaration = null;
36 protected QName varName = null;
38 protected XQueryExpression expression = null;
39 protected int bindingtype = -1;
41 protected ArrayList xpaths = null;
43 protected FLWRExpression parentFLWR = null;
44 protected Variable positionVar = null;
45 protected byte creator = 0;
46 protected boolean isDummy = false;
47
48 public static final byte PARSER_CREATOR = 0;
49 public static final byte NORM_CREATOR = 1;
50 public static final byte RES_CREATOR = 2;
51 public static final byte CAN_CREATOR = 3;
52 public static final byte CLONE_CREATOR = 4;
53 public static final byte DEPMAN_CREATOR = 5;
54
55
59 public void accept(ParserVisitor visitor) throws XQueryException {
60 visitor.visit(this);
61 }
62
63
67 public Variable(QName varName, XQueryModule parentModule) throws TypeException, XQueryException {
68 setVarName(varName);
69 setParentModule(parentModule);
70 }
73
74
78 public String toString() {
79 return toString(false, false, false);
80 }
81
82 public String getStringValue() {
83 return getStringValue(false, false);
84 }
85
86 public FLWRExpression getParentFLWRExpression() {
87 return parentFLWR;
88 }
89
90 public void setParentFLWRExpression(FLWRExpression parentFLWR) {
91 this.parentFLWR = parentFLWR;
92 }
93
94 public void setParentExpression(XQueryExpression expression) {
95 if (expression == null)
96 return;
97 if (parentExpression == null)
98 parentExpression = new ArrayList (1);
99 if (!parentExpression.contains(expression))
101 parentExpression.add(expression);
102 }
103
104 public void setExpression(XQueryExpression expression, boolean reType) throws TypeException, XQueryException {
105 if (expression != this.expression) {
106 this.expression = expression;
107 if (this.expression != null) {
108 expression.setParentExpression(this);
109 }
110 if (reType && parentModule != null && parentModule.getStaticContext().getTypeVisitor() != null)
111 accept(parentModule.getStaticContext().getTypeVisitor());
112 }
113 }
114
115
123 public void setBindingType(int bindingtype) throws XQueryException {
124 if (bindingtype == -1 || bindingtype > Constants.MAX_BINDINGTYPE)
125 throw new XQueryException("bindingtype of Variable has incorrect value " + bindingtype);
126 this.bindingtype = bindingtype;
127 }
128
129 public Variable getPositionVar() {
130 return positionVar;
131 }
132
133 public XQueryExpression getExpression() {
134 return expression;
135 }
136 public int getBindingType() {
137 return bindingtype;
138 }
139
140 public boolean isInput() {
141 if (expression == null)
142 return false;
143 if (expression instanceof InputFunctionCall || (expression instanceof LocatedExpression && ((LocatedExpression) expression).getExpression() instanceof InputFunctionCall))
144 return true;
145 return false;
146 }
147
148 public ArrayList getSubPathList() {
149 return xpaths;
150 }
151
152 public ArrayList getUniqueSubPathList() {
156 if (xpaths == null)
157 return null;
158 ArrayList tmpList = null;
159 if (xpaths.contains(this)) {
160 tmpList = new ArrayList (1);
161 tmpList.add(this);
162 } else {
163 tmpList = new ArrayList ();
164 for (int i = 0; i < xpaths.size(); i++) {
165 XQueryExpression tmpExpr = (XQueryExpression) xpaths.get(i);
166 if (tmpExpr instanceof LocatedExpression) {
167 LocatedExpression tmpLoc = (LocatedExpression) tmpExpr;
168 ArrayList steps = tmpLoc.getSteps();
169 Step lastStep = tmpLoc.getStepNum(steps.size() - 1);
170 if (lastStep.getExpression() instanceof NodeTest) {
171 tmpLoc.setNodeAccessor(lastStep.getStepKind());
172 steps.remove(steps.size() - 1);
173 }
174 }
175 if (tmpList.isEmpty())
176 tmpList.add(tmpExpr);
177 else {
178 boolean found = false;
179 for (int j = 0; j < tmpList.size(); j++)
180 if (tmpExpr.getStringValue().equals(((XQueryExpression) tmpList.get(j)).getStringValue())) {
181 found = true;
182 break;
183 }
184 if (!found)
185 tmpList.add(tmpExpr);
186 }
187 }
188 }
189 return tmpList;
190 }
191
192
196 public ArrayList getXTrees() {
197 if (expression == null)
198 return null;
199 return expression.getXTrees();
200 }
201
202 public void setTypeDeclaration(SequenceType typeDeclaration) {
204 this.typeDeclaration = typeDeclaration;
205 if (typeDeclaration != null) {
206 this.typeDeclaration.setParentModule(parentModule);
207 this.typeDeclaration.setParentExpression(this);
208 }
209 }
210 public SequenceType getTypeDeclaration() {
211 return typeDeclaration;
212 }
213
214 public void setVarName(QName varName) throws XQueryException {
215 if (varName == null || varName.getName().equals(""))
216 throw new XQueryException("name of Variable cannot be null or empty string");
217 this.varName = varName;
218 this.varName.setParentModule(parentModule);
219 this.varName.setParentExpression(this);
220 }
221
222 public QName getVarName() {
223 return varName;
224 }
225 public String getName() {
226 return varName.getStringValue();
227 }
228 public void setName(String name) {
229 varName.setName(name);
230 }
231
232 public void addSubPath(XQueryExpression expr) {
233 if (xpaths == null)
234 xpaths = new ArrayList ();
235 if (expr != null && !xpaths.contains(expr))
236 xpaths.add(expr);
237 }
238
239 public byte getCreator() {
240 return creator;
241 }
242
243 public void setCreator(byte creator) {
244 this.creator = creator;
245 }
246
247 public void addParentExpression(XQueryExpression parentExpression) {
248 addParentExpression(parentExpression);
249 varName.addParentExpression(parentExpression);
250 if (expression != null)
251 expression.addParentExpression(parentExpression);
252 }
253
254 public void isDummy(boolean b) {
255 isDummy = b;
256 }
257
258 public boolean isDummy() {
259 return isDummy;
260 }
261
262 public boolean startsWithVariable() {
263 return true;
264 }
265
266 }
267 |
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