Source Code Cross Referenced for StandardFunction.java in  » XML » saxonb » net » sf » saxon » functions » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » XML » saxonb » net.sf.saxon.functions 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        package net.sf.saxon.functions;
002:
003:        import net.sf.saxon.expr.StaticProperty;
004:        import net.sf.saxon.pattern.NodeKindTest;
005:        import net.sf.saxon.type.ItemType;
006:        import net.sf.saxon.type.Type;
007:        import net.sf.saxon.value.SequenceType;
008:
009:        import java.util.HashMap;
010:
011:        /**
012:         * This class contains static data tables defining the properties of standard functions. "Standard functions"
013:         * here means the XPath 2.0 functions, the XSLT 2.0 functions, and a few selected extension functions
014:         * which need special recognition.
015:         */
016:
017:        public abstract class StandardFunction {
018:
019:            /**
020:             * This class is never instantiated
021:             */
022:
023:            private StandardFunction() {
024:            }
025:
026:            /**
027:             * Register a system function in the table of function details.
028:             * @param name the function name
029:             * @param implementationClass the class used to implement the function
030:             * @param opcode identifies the function when a single class implements several functions
031:             * @param minArguments the minimum number of arguments required
032:             * @param maxArguments the maximum number of arguments allowed
033:             * @param itemType the item type of the result of the function
034:             * @param cardinality the cardinality of the result of the function
035:             * @return the entry describing the function. The entry is incomplete, it does not yet contain information
036:             * about the function arguments.
037:             */
038:
039:            private static Entry register(String name,
040:                    Class implementationClass, int opcode, int minArguments,
041:                    int maxArguments, ItemType itemType, int cardinality) {
042:                Entry e = makeEntry(name, implementationClass, opcode,
043:                        minArguments, maxArguments, itemType, cardinality);
044:                functionTable.put(name, e);
045:                return e;
046:            }
047:
048:            /**
049:             * Make a table entry describing the signature of a function, with a reference to the implementation class.
050:             * @param name the function name
051:             * @param implementationClass the class used to implement the function
052:             * @param opcode identifies the function when a single class implements several functions
053:             * @param minArguments the minimum number of arguments required
054:             * @param maxArguments the maximum number of arguments allowed
055:             * @param itemType the item type of the result of the function
056:             * @param cardinality the cardinality of the result of the function
057:             * @return the entry describing the function. The entry is incomplete, it does not yet contain information
058:             * about the function arguments.
059:             */
060:            public static Entry makeEntry(String name,
061:                    Class implementationClass, int opcode, int minArguments,
062:                    int maxArguments, ItemType itemType, int cardinality) {
063:                Entry e = new Entry();
064:                int hash = name.indexOf('#');
065:                if (hash < 0) {
066:                    e.name = name;
067:                } else {
068:                    e.name = name.substring(0, hash);
069:                }
070:                e.implementationClass = implementationClass;
071:                e.opcode = opcode;
072:                e.minArguments = minArguments;
073:                e.maxArguments = maxArguments;
074:                e.itemType = itemType;
075:                e.cardinality = cardinality;
076:                if (maxArguments > 100) {
077:                    // special case for concat()
078:                    e.argumentTypes = new SequenceType[1];
079:                } else {
080:                    e.argumentTypes = new SequenceType[maxArguments];
081:                }
082:                return e;
083:            }
084:
085:            /**
086:             * Add information to a function entry about the argument types of the function
087:             * @param e the entry for the function
088:             * @param a the position of the argument, counting from zero
089:             * @param type the item type of the argument
090:             * @param cardinality the cardinality of the argument
091:             */
092:
093:            public static void arg(Entry e, int a, ItemType type,
094:                    int cardinality) {
095:                try {
096:                    e.argumentTypes[a] = SequenceType.makeSequenceType(type,
097:                            cardinality);
098:                } catch (ArrayIndexOutOfBoundsException err) {
099:                    System.err
100:                            .println("Internal Saxon error: Can't set argument "
101:                                    + a + " of " + e.name);
102:                }
103:            }
104:
105:            private static HashMap functionTable = new HashMap(200);
106:
107:            protected static ItemType SAME_AS_FIRST_ARGUMENT = NodeKindTest.NAMESPACE;
108:            // this could be any item type that is used only for this purpose
109:
110:            static {
111:                Entry e;
112:                e = register("abs", Rounding.class, Rounding.ABS, 1, 1,
113:                        SAME_AS_FIRST_ARGUMENT,
114:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
115:                arg(e, 0, Type.NUMBER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
116:
117:                e = register("adjust-date-to-timezone", Adjust.class, 0, 1, 2,
118:                        Type.DATE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
119:                arg(e, 0, Type.DATE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
120:                arg(e, 1, Type.DAY_TIME_DURATION_TYPE,
121:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
122:
123:                e = register("adjust-dateTime-to-timezone", Adjust.class, 0, 1,
124:                        2, Type.DATE_TIME_TYPE,
125:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
126:                arg(e, 0, Type.DATE_TIME_TYPE,
127:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
128:                arg(e, 1, Type.DAY_TIME_DURATION_TYPE,
129:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
130:
131:                e = register("adjust-time-to-timezone", Adjust.class, 0, 1, 2,
132:                        Type.TIME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
133:                arg(e, 0, Type.TIME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
134:                arg(e, 1, Type.DAY_TIME_DURATION_TYPE,
135:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
136:
137:                e = register("avg", Aggregate.class, Aggregate.AVG, 1, 1,
138:                        Type.ANY_ATOMIC_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
139:                // can't say "same as first argument" because the avg of a set of integers is decimal
140:                arg(e, 0, Type.ANY_ATOMIC_TYPE,
141:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
142:
143:                e = register("base-uri", BaseURI.class, 0, 0, 1,
144:                        Type.ANY_URI_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
145:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
146:
147:                e = register("boolean", BooleanFn.class, BooleanFn.BOOLEAN, 1,
148:                        1, Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
149:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
150:
151:                e = register("ceiling", Rounding.class, Rounding.CEILING, 1, 1,
152:                        SAME_AS_FIRST_ARGUMENT,
153:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
154:                arg(e, 0, Type.NUMBER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
155:
156:                e = register("codepoint-equal", CodepointEqual.class, 0, 2, 2,
157:                        Type.BOOLEAN_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
158:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
159:                arg(e, 1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
160:
161:                e = register("codepoints-to-string", Unicode.class,
162:                        Unicode.FROM_CODEPOINTS, 1, 1, Type.STRING_TYPE,
163:                        StaticProperty.EXACTLY_ONE);
164:                arg(e, 0, Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
165:
166:                e = register("collection", Collection.class, 0, 0, 1,
167:                        Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
168:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
169:
170:                e = register("compare", Compare.class, 0, 2, 3,
171:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
172:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
173:                arg(e, 1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
174:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
175:
176:                e = register("concat", Concat.class, 0, 2, Integer.MAX_VALUE,
177:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
178:                arg(e, 0, Type.ANY_ATOMIC_TYPE,
179:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
180:                // Note, this has a variable number of arguments so it is treated specially
181:
182:                e = register("contains", Contains.class, Contains.CONTAINS, 2,
183:                        3, Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
184:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
185:                arg(e, 1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
186:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
187:
188:                e = register("count", Aggregate.class, Aggregate.COUNT, 1, 1,
189:                        Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
190:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
191:
192:                register("current", Current.class, 0, 0, 0, Type.ITEM_TYPE,
193:                        StaticProperty.EXACTLY_ONE);
194:                register("current-date", CurrentDateTime.class, 0, 0, 0,
195:                        Type.DATE_TYPE, StaticProperty.EXACTLY_ONE);
196:                register("current-dateTime", CurrentDateTime.class, 0, 0, 0,
197:                        Type.DATE_TIME_TYPE, StaticProperty.EXACTLY_ONE);
198:                register("current-time", CurrentDateTime.class, 0, 0, 0,
199:                        Type.TIME_TYPE, StaticProperty.EXACTLY_ONE);
200:
201:                register("current-group", CurrentGroup.class,
202:                        CurrentGroup.CURRENT_GROUP, 0, 0, Type.ITEM_TYPE,
203:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
204:                register("current-grouping-key", CurrentGroup.class,
205:                        CurrentGroup.CURRENT_GROUPING_KEY, 0, 0,
206:                        Type.ANY_ATOMIC_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
207:
208:                e = register("data", Data.class, 0, 1, 1, Type.ANY_ATOMIC_TYPE,
209:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
210:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
211:
212:                e = register("dateTime", DateTimeConstructor.class, 0, 2, 2,
213:                        Type.DATE_TIME_TYPE, StaticProperty.EXACTLY_ONE);
214:                arg(e, 0, Type.DATE_TYPE, StaticProperty.EXACTLY_ONE);
215:                arg(e, 1, Type.TIME_TYPE, StaticProperty.EXACTLY_ONE);
216:
217:                e = register("day-from-date", Component.class,
218:                        (Component.DAY << 16) + Type.DATE, 1, 1,
219:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
220:                arg(e, 0, Type.DATE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
221:
222:                e = register("day-from-dateTime", Component.class,
223:                        (Component.DAY << 16) + Type.DATE_TIME, 1, 1,
224:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
225:                arg(e, 0, Type.DATE_TIME_TYPE,
226:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
227:
228:                e = register("days-from-duration", Component.class,
229:                        (Component.DAY << 16) + Type.DAY_TIME_DURATION, 1, 1,
230:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
231:                arg(e, 0, Type.DAY_TIME_DURATION_TYPE,
232:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
233:
234:                e = register("deep-equal", DeepEqual.class, 0, 2, 3,
235:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
236:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
237:                arg(e, 1, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
238:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
239:
240:                register("default-collation", DefaultCollation.class, 0, 0, 0,
241:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
242:
243:                e = register("distinct-values", DistinctValues.class, 0, 1, 2,
244:                        Type.ANY_ATOMIC_TYPE,
245:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
246:                arg(e, 0, Type.ANY_ATOMIC_TYPE,
247:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
248:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
249:
250:                e = register("doc", Doc.class, Doc.DOC, 1, 1,
251:                        NodeKindTest.DOCUMENT,
252:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
253:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
254:
255:                e = register("doc-available", Doc.class, Doc.DOC_AVAILABLE, 1,
256:                        1, Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
257:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
258:
259:                e = register("document", Document.class, 0, 1, 2,
260:                        Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
261:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
262:                arg(e, 1, Type.NODE_TYPE, StaticProperty.EXACTLY_ONE);
263:
264:                e = register("document-uri", NamePart.class,
265:                        NamePart.DOCUMENT_URI, 1, 1, Type.ANY_URI_TYPE,
266:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
267:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
268:
269:                e = register("empty", Existence.class, Existence.EMPTY, 1, 1,
270:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
271:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
272:
273:                e = register("ends-with", Contains.class, Contains.ENDSWITH, 2,
274:                        3, Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
275:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
276:                arg(e, 1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
277:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
278:
279:                e = register("element-available", Available.class,
280:                        Available.ELEMENT_AVAILABLE, 1, 1, Type.BOOLEAN_TYPE,
281:                        StaticProperty.EXACTLY_ONE);
282:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
283:
284:                e = register("encode-for-uri", EscapeURI.class,
285:                        EscapeURI.ENCODE_FOR_URI, 1, 1, Type.STRING_TYPE,
286:                        StaticProperty.EXACTLY_ONE);
287:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
288:
289:                e = register("escape-html-uri", EscapeURI.class,
290:                        EscapeURI.HTML_URI, 1, 1, Type.STRING_TYPE,
291:                        StaticProperty.EXACTLY_ONE);
292:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
293:
294:                e = register("error", Error.class, 0, 0, 3, Type.ITEM_TYPE,
295:                        StaticProperty.EXACTLY_ONE);
296:                // The return type is chosen so that use of the error() function will never give a static type error.
297:                arg(e, 0, Type.QNAME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
298:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
299:                arg(e, 2, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
300:
301:                //        e = register("escape-uri", EscapeURI.class, EscapeURI.ESCAPE, 2, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
302:                //            arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
303:                //            arg(e, 1, Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
304:
305:                e = register("exactly-one", TreatFn.class,
306:                        StaticProperty.EXACTLY_ONE, 1, 1,
307:                        SAME_AS_FIRST_ARGUMENT, StaticProperty.EXACTLY_ONE);
308:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.EXACTLY_ONE);
309:                // because we don't do draconian static type checking, we can do the work in the argument type checking code
310:
311:                e = register("exists", Existence.class, Existence.EXISTS, 1, 1,
312:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
313:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
314:
315:                register("false", BooleanFn.class, BooleanFn.FALSE, 0, 0,
316:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
317:
318:                e = register("floor", Rounding.class, Rounding.FLOOR, 1, 1,
319:                        SAME_AS_FIRST_ARGUMENT,
320:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
321:                arg(e, 0, Type.NUMBER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
322:
323:                e = register("format-date", FormatDate.class, Type.DATE, 2, 5,
324:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
325:                arg(e, 0, Type.DATE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
326:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
327:                arg(e, 2, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
328:                arg(e, 3, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
329:                arg(e, 4, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
330:
331:                e = register("format-dateTime", FormatDate.class,
332:                        Type.DATE_TIME, 2, 5, Type.STRING_TYPE,
333:                        StaticProperty.EXACTLY_ONE);
334:                arg(e, 0, Type.DATE_TIME_TYPE,
335:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
336:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
337:                arg(e, 2, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
338:                arg(e, 3, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
339:                arg(e, 4, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
340:
341:                e = register("format-number", FormatNumber2.class, 0, 2, 3,
342:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
343:                arg(e, 0, Type.NUMBER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
344:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
345:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
346:
347:                e = register("format-time", FormatDate.class, Type.TIME, 2, 5,
348:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
349:                arg(e, 0, Type.TIME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
350:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
351:                arg(e, 2, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
352:                arg(e, 3, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
353:                arg(e, 4, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
354:
355:                e = register("function-available", Available.class,
356:                        Available.FUNCTION_AVAILABLE, 1, 2, Type.BOOLEAN_TYPE,
357:                        StaticProperty.EXACTLY_ONE);
358:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
359:                arg(e, 1, Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
360:
361:                e = register("generate-id", NamePart.class,
362:                        NamePart.GENERATE_ID, 0, 1, Type.STRING_TYPE,
363:                        StaticProperty.EXACTLY_ONE);
364:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
365:
366:                e = register("hours-from-dateTime", Component.class,
367:                        (Component.HOURS << 16) + Type.DATE_TIME, 1, 1,
368:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
369:                arg(e, 0, Type.DATE_TIME_TYPE,
370:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
371:
372:                e = register("hours-from-duration", Component.class,
373:                        (Component.HOURS << 16) + Type.DAY_TIME_DURATION, 1, 1,
374:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
375:                arg(e, 0, Type.DAY_TIME_DURATION_TYPE,
376:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
377:
378:                e = register("hours-from-time", Component.class,
379:                        (Component.HOURS << 16) + Type.TIME, 1, 1,
380:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
381:                arg(e, 0, Type.TIME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
382:
383:                e = register("id", Id.class, 0, 1, 2, NodeKindTest.ELEMENT,
384:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
385:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
386:                arg(e, 1, Type.NODE_TYPE, StaticProperty.EXACTLY_ONE);
387:
388:                e = register("idref", Idref.class, 0, 1, 2, Type.NODE_TYPE,
389:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
390:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
391:                arg(e, 1, Type.NODE_TYPE, StaticProperty.EXACTLY_ONE);
392:
393:                register("implicit-timezone", CurrentDateTime.class, 0, 0, 0,
394:                        Type.DAY_TIME_DURATION_TYPE, StaticProperty.EXACTLY_ONE);
395:
396:                e = register("in-scope-prefixes", InScopePrefixes.class, 0, 1,
397:                        1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
398:                arg(e, 0, NodeKindTest.ELEMENT, StaticProperty.EXACTLY_ONE);
399:
400:                e = register("index-of", IndexOf.class, 0, 2, 3,
401:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
402:                arg(e, 0, Type.ANY_ATOMIC_TYPE,
403:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
404:                arg(e, 1, Type.ANY_ATOMIC_TYPE, StaticProperty.EXACTLY_ONE);
405:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
406:
407:                e = register("insert-before", Insert.class, 0, 3, 3,
408:                        Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
409:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
410:                arg(e, 1, Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
411:                arg(e, 2, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
412:
413:                e = register("iri-to-uri", EscapeURI.class,
414:                        EscapeURI.IRI_TO_URI, 1, 1, Type.STRING_TYPE,
415:                        StaticProperty.EXACTLY_ONE);
416:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
417:
418:                e = register("key", KeyFn.class, 0, 2, 3, Type.NODE_TYPE,
419:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
420:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
421:                arg(e, 1, Type.ANY_ATOMIC_TYPE,
422:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
423:                arg(e, 2, Type.NODE_TYPE, StaticProperty.EXACTLY_ONE);
424:
425:                e = register("lang", Lang.class, 0, 1, 2, Type.BOOLEAN_TYPE,
426:                        StaticProperty.EXACTLY_ONE);
427:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
428:                arg(e, 1, Type.NODE_TYPE, StaticProperty.EXACTLY_ONE);
429:
430:                register("last", Last.class, 0, 0, 0, Type.INTEGER_TYPE,
431:                        StaticProperty.EXACTLY_ONE);
432:
433:                e = register("local-name", NamePart.class, NamePart.LOCAL_NAME,
434:                        0, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
435:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
436:
437:                e = register("local-name-from-QName", Component.class,
438:                        (Component.LOCALNAME << 16) + Type.QNAME, 1, 1,
439:                        Type.NCNAME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
440:                arg(e, 0, Type.QNAME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
441:
442:                e = register("lower-case", ForceCase.class,
443:                        ForceCase.LOWERCASE, 1, 1, Type.STRING_TYPE,
444:                        StaticProperty.EXACTLY_ONE);
445:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
446:
447:                e = register("matches", Matches.class, 0, 2, 3,
448:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
449:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
450:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
451:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
452:
453:                e = register("max", Minimax.class, Minimax.MAX, 1, 2,
454:                        SAME_AS_FIRST_ARGUMENT,
455:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
456:                arg(e, 0, Type.ANY_ATOMIC_TYPE,
457:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
458:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
459:
460:                e = register("min", Minimax.class, Minimax.MIN, 1, 2,
461:                        SAME_AS_FIRST_ARGUMENT,
462:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
463:                arg(e, 0, Type.ANY_ATOMIC_TYPE,
464:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
465:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
466:
467:                e = register("minutes-from-dateTime", Component.class,
468:                        (Component.MINUTES << 16) + Type.DATE_TIME, 1, 1,
469:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
470:                arg(e, 0, Type.DATE_TIME_TYPE,
471:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
472:
473:                e = register("minutes-from-duration", Component.class,
474:                        (Component.MINUTES << 16) + Type.DAY_TIME_DURATION, 1,
475:                        1, Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
476:                arg(e, 0, Type.DAY_TIME_DURATION_TYPE,
477:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
478:
479:                e = register("minutes-from-time", Component.class,
480:                        (Component.MINUTES << 16) + Type.TIME, 1, 1,
481:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
482:                arg(e, 0, Type.TIME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
483:
484:                e = register("month-from-date", Component.class,
485:                        (Component.MONTH << 16) + Type.DATE, 1, 1,
486:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
487:                arg(e, 0, Type.DATE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
488:
489:                e = register("month-from-dateTime", Component.class,
490:                        (Component.MONTH << 16) + Type.DATE_TIME, 1, 1,
491:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
492:                arg(e, 0, Type.DATE_TIME_TYPE,
493:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
494:
495:                e = register("months-from-duration", Component.class,
496:                        (Component.MONTH << 16) + Type.YEAR_MONTH_DURATION, 1,
497:                        1, Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
498:                arg(e, 0, Type.YEAR_MONTH_DURATION_TYPE,
499:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
500:
501:                e = register("name", NamePart.class, NamePart.NAME, 0, 1,
502:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
503:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
504:
505:                e = register("namespace-uri", NamePart.class,
506:                        NamePart.NAMESPACE_URI, 0, 1, Type.ANY_URI_TYPE,
507:                        StaticProperty.EXACTLY_ONE);
508:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
509:
510:                e = register("namespace-uri-for-prefix",
511:                        NamespaceForPrefix.class, 0, 2, 2, Type.ANY_URI_TYPE,
512:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
513:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
514:                arg(e, 1, NodeKindTest.ELEMENT, StaticProperty.EXACTLY_ONE);
515:
516:                e = register("namespace-uri-from-QName", Component.class,
517:                        (Component.NAMESPACE << 16) + Type.QNAME, 1, 1,
518:                        Type.ANY_URI_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
519:                arg(e, 0, Type.QNAME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
520:
521:                e = register("nilled", Nilled.class, 0, 1, 1,
522:                        Type.BOOLEAN_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
523:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
524:
525:                e = register("node-name", NamePart.class, NamePart.NODE_NAME,
526:                        0, 1, Type.QNAME_TYPE,
527:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
528:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
529:
530:                e = register("not", BooleanFn.class, BooleanFn.NOT, 1, 1,
531:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
532:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
533:
534:                register("normalize-space", NormalizeSpace.class, 0, 0, 1,
535:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
536:                register("normalize-space#0", NormalizeSpace.class, 0, 0, 0,
537:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
538:
539:                e = register("normalize-space#1", NormalizeSpace.class, 0, 1,
540:                        1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
541:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
542:
543:                e = register("normalize-unicode", NormalizeUnicode.class, 0, 1,
544:                        2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
545:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
546:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
547:
548:                e = register("number", NumberFn.class, 0, 0, 1,
549:                        Type.DOUBLE_TYPE, StaticProperty.EXACTLY_ONE);
550:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
551:
552:                e = register("one-or-more", TreatFn.class,
553:                        StaticProperty.ALLOWS_ONE_OR_MORE, 1, 1,
554:                        SAME_AS_FIRST_ARGUMENT,
555:                        StaticProperty.ALLOWS_ONE_OR_MORE);
556:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ONE_OR_MORE);
557:                // because we don't do draconian static type checking, we can do the work in the argument type checking code
558:
559:                register("position", Position.class, 0, 0, 0,
560:                        Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
561:
562:                e = register("prefix-from-QName", Component.class,
563:                        (Component.PREFIX << 16) + Type.QNAME, 1, 1,
564:                        Type.NCNAME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
565:                arg(e, 0, Type.QNAME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
566:
567:                e = register("QName", QNameFn.class, 0, 2, 2, Type.QNAME_TYPE,
568:                        StaticProperty.EXACTLY_ONE);
569:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
570:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
571:
572:                e = register("regex-group", RegexGroup.class, 0, 1, 1,
573:                        Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
574:                arg(e, 0, Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
575:
576:                e = register("remove", Remove.class, 0, 2, 2,
577:                        SAME_AS_FIRST_ARGUMENT,
578:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
579:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
580:                arg(e, 1, Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
581:
582:                e = register("replace", Replace.class, 0, 3, 4,
583:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
584:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
585:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
586:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
587:                arg(e, 3, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
588:
589:                e = register("resolve-QName", ResolveQName.class, 0, 2, 2,
590:                        Type.QNAME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
591:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
592:                arg(e, 1, NodeKindTest.ELEMENT, StaticProperty.EXACTLY_ONE);
593:
594:                e = register("resolve-uri", ResolveURI.class, 0, 1, 2,
595:                        Type.ANY_URI_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
596:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
597:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
598:
599:                e = register("reverse", Reverse.class, 0, 1, 1, Type.ITEM_TYPE,
600:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
601:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
602:
603:                e = register("root", Root.class, 0, 0, 1, Type.NODE_TYPE,
604:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
605:                arg(e, 0, Type.NODE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
606:
607:                e = register("round", Rounding.class, Rounding.ROUND, 1, 1,
608:                        SAME_AS_FIRST_ARGUMENT,
609:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
610:                arg(e, 0, Type.NUMBER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
611:
612:                e = register("round-half-to-even", Rounding.class,
613:                        Rounding.HALF_EVEN, 1, 2, SAME_AS_FIRST_ARGUMENT,
614:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
615:                arg(e, 0, Type.NUMBER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
616:                arg(e, 1, Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
617:
618:                e = register("seconds-from-dateTime", Component.class,
619:                        (Component.SECONDS << 16) + Type.DATE_TIME, 1, 1,
620:                        Type.DECIMAL_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
621:                arg(e, 0, Type.DATE_TIME_TYPE,
622:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
623:
624:                e = register("seconds-from-duration", Component.class,
625:                        (Component.SECONDS << 16) + Type.DAY_TIME_DURATION, 1,
626:                        1, Type.DECIMAL_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
627:                arg(e, 0, Type.DAY_TIME_DURATION_TYPE,
628:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
629:
630:                e = register("seconds-from-time", Component.class,
631:                        (Component.SECONDS << 16) + Type.TIME, 1, 1,
632:                        Type.DECIMAL_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
633:                arg(e, 0, Type.TIME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
634:
635:                e = register("starts-with", Contains.class,
636:                        Contains.STARTSWITH, 2, 3, Type.BOOLEAN_TYPE,
637:                        StaticProperty.EXACTLY_ONE);
638:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
639:                arg(e, 1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
640:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
641:
642:                register("static-base-uri", StaticBaseURI.class, 0, 0, 0,
643:                        Type.ANY_URI_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
644:
645:                e = register("string", StringFn.class, 0, 0, 1,
646:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
647:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
648:
649:                register("string-length", StringLength.class, 0, 0, 1,
650:                        Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
651:                register("string-length#0", StringLength.class, 0, 0, 0,
652:                        Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
653:
654:                e = register("string-length#1", StringLength.class, 0, 1, 1,
655:                        Type.INTEGER_TYPE, StaticProperty.EXACTLY_ONE);
656:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
657:
658:                e = register("string-join", StringJoin.class, 0, 2, 2,
659:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
660:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
661:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
662:
663:                e = register("string-to-codepoints", Unicode.class,
664:                        Unicode.TO_CODEPOINTS, 1, 1, Type.INTEGER_TYPE,
665:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
666:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
667:
668:                e = register("subsequence", Subsequence.class, 0, 2, 3,
669:                        SAME_AS_FIRST_ARGUMENT,
670:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
671:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
672:                arg(e, 1, Type.NUMBER_TYPE, StaticProperty.EXACTLY_ONE);
673:                arg(e, 2, Type.NUMBER_TYPE, StaticProperty.EXACTLY_ONE);
674:
675:                e = register("substring", Substring.class, 0, 2, 3,
676:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
677:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
678:                arg(e, 1, Type.NUMBER_TYPE, StaticProperty.EXACTLY_ONE);
679:                arg(e, 2, Type.NUMBER_TYPE, StaticProperty.EXACTLY_ONE);
680:
681:                e = register("substring-after", Contains.class, Contains.AFTER,
682:                        2, 3, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
683:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
684:                arg(e, 1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
685:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
686:
687:                e = register("substring-before", Contains.class,
688:                        Contains.BEFORE, 2, 3, Type.STRING_TYPE,
689:                        StaticProperty.EXACTLY_ONE);
690:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
691:                arg(e, 1, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
692:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
693:
694:                e = register("sum", Aggregate.class, Aggregate.SUM, 1, 2,
695:                        Type.ANY_ATOMIC_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
696:                arg(e, 0, Type.ANY_ATOMIC_TYPE,
697:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
698:                arg(e, 1, Type.ANY_ATOMIC_TYPE,
699:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
700:
701:                e = register("system-property", SystemProperty.class, 0, 1, 1,
702:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
703:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
704:
705:                e = register("timezone-from-date", Component.class,
706:                        (Component.TIMEZONE << 16) + Type.DATE, 1, 1,
707:                        Type.DAY_TIME_DURATION_TYPE,
708:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
709:                arg(e, 0, Type.DATE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
710:
711:                e = register("timezone-from-dateTime", Component.class,
712:                        (Component.TIMEZONE << 16) + Type.DATE_TIME, 1, 1,
713:                        Type.DAY_TIME_DURATION_TYPE,
714:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
715:                arg(e, 0, Type.DATE_TIME_TYPE,
716:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
717:
718:                e = register("timezone-from-time", Component.class,
719:                        (Component.TIMEZONE << 16) + Type.TIME, 1, 1,
720:                        Type.DAY_TIME_DURATION_TYPE,
721:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
722:                arg(e, 0, Type.TIME_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
723:
724:                e = register("trace", Trace.class, 0, 2, 2,
725:                        SAME_AS_FIRST_ARGUMENT,
726:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
727:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
728:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
729:
730:                register("true", BooleanFn.class, BooleanFn.TRUE, 0, 0,
731:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
732:
733:                e = register("translate", Translate.class, 0, 3, 3,
734:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
735:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
736:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
737:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
738:
739:                e = register("tokenize", Tokenize.class, 0, 2, 3,
740:                        Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
741:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
742:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
743:                arg(e, 2, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
744:
745:                e = register("unordered", Unordered.class, 0, 1, 1,
746:                        SAME_AS_FIRST_ARGUMENT,
747:                        StaticProperty.ALLOWS_ZERO_OR_MORE);
748:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_MORE);
749:
750:                e = register("upper-case", ForceCase.class,
751:                        ForceCase.UPPERCASE, 1, 1, Type.STRING_TYPE,
752:                        StaticProperty.EXACTLY_ONE);
753:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
754:
755:                e = register("unparsed-entity-uri", UnparsedEntity.class,
756:                        UnparsedEntity.URI, 1, 1, Type.ANY_URI_TYPE,
757:                        StaticProperty.EXACTLY_ONE);
758:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
759:
760:                // internal version of unparsed-entity-uri with second argument representing the current document
761:                e = register("unparsed-entity-uri_9999_", UnparsedEntity.class,
762:                        UnparsedEntity.URI, 2, 2, Type.STRING_TYPE,
763:                        StaticProperty.EXACTLY_ONE);
764:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
765:                arg(e, 1, NodeKindTest.DOCUMENT, StaticProperty.EXACTLY_ONE);
766:
767:                e = register("unparsed-entity-public-id", UnparsedEntity.class,
768:                        UnparsedEntity.PUBLIC_ID, 1, 1, Type.STRING_TYPE,
769:                        StaticProperty.EXACTLY_ONE);
770:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
771:
772:                // internal version of unparsed-entity-public-id with second argument representing the current document
773:                e = register("unparsed-entity-public-id_9999_",
774:                        UnparsedEntity.class, UnparsedEntity.PUBLIC_ID, 2, 2,
775:                        Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
776:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
777:                arg(e, 1, NodeKindTest.DOCUMENT, StaticProperty.EXACTLY_ONE);
778:
779:                e = register("unparsed-text", UnparsedText.class,
780:                        UnparsedText.UNPARSED_TEXT, 1, 2, Type.STRING_TYPE,
781:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
782:                arg(e, 0, Type.STRING_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
783:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
784:
785:                e = register("unparsed-text-available", UnparsedText.class,
786:                        UnparsedText.UNPARSED_TEXT_AVAILABLE, 1, 2,
787:                        Type.BOOLEAN_TYPE, StaticProperty.EXACTLY_ONE);
788:                arg(e, 0, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
789:                arg(e, 1, Type.STRING_TYPE, StaticProperty.EXACTLY_ONE);
790:
791:                e = register("year-from-date", Component.class,
792:                        (Component.YEAR << 16) + Type.DATE, 1, 1,
793:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
794:                arg(e, 0, Type.DATE_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
795:
796:                e = register("year-from-dateTime", Component.class,
797:                        (Component.YEAR << 16) + Type.DATE_TIME, 1, 1,
798:                        Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
799:                arg(e, 0, Type.DATE_TIME_TYPE,
800:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
801:
802:                e = register("years-from-duration", Component.class,
803:                        (Component.YEAR << 16) + Type.YEAR_MONTH_DURATION, 1,
804:                        1, Type.INTEGER_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
805:                arg(e, 0, Type.YEAR_MONTH_DURATION_TYPE,
806:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
807:
808:                e = register("zero-or-one", TreatFn.class,
809:                        StaticProperty.ALLOWS_ZERO_OR_ONE, 1, 1,
810:                        SAME_AS_FIRST_ARGUMENT,
811:                        StaticProperty.ALLOWS_ZERO_OR_ONE);
812:                arg(e, 0, Type.ITEM_TYPE, StaticProperty.ALLOWS_ZERO_OR_ONE);
813:                // because we don't do draconian static type checking, we can do the work in the argument type checking code
814:            }
815:
816:            /**
817:             * Get the table entry for the function with a given name
818:             * @param name the name of the function. This may be an unprefixed local-name for functions in the
819:             * system namespace, or may use the conventional prefix "saxon:" in the case of Saxon extension functions
820:             * that are specially recognized
821:             * @return if the function name is known, an Entry containing information about the function. Otherwise,
822:             * null
823:             */
824:
825:            public static Entry getFunction(String name, int arity) {
826:                // try first for an entry of the form name#arity
827:                Entry e = (Entry) functionTable.get(name + '#' + arity);
828:                if (e != null) {
829:                    return e;
830:                }
831:                // try for a generic entry
832:                return (Entry) functionTable.get(name);
833:            }
834:
835:            /**
836:             * An entry in the table describing the properties of a function
837:             */
838:            public static class Entry implements  java.io.Serializable {
839:                /**
840:                 * The name of the function: a local name in the case of functions in the standard library, or a
841:                 * name with the conventional prefix "saxon:" in the case of Saxon extension functions
842:                 */
843:                public String name;
844:                /**
845:                 * The class containing the implementation of this function (always a subclass of SystemFunction)
846:                 */
847:                public Class implementationClass;
848:                /**
849:                 * Some classes support more than one function. In these cases the particular function is defined
850:                 * by an integer opcode, whose meaning is local to the implementation class.
851:                 */
852:                public int opcode;
853:                /**
854:                 * The minimum number of arguments required
855:                 */
856:                public int minArguments;
857:                /**
858:                 * The maximum number of arguments permitted
859:                 */
860:                public int maxArguments;
861:                /**
862:                 * The item type of the result of the function
863:                 */
864:                public ItemType itemType;
865:                /**
866:                 * The cardinality of the result of the function
867:                 */
868:                public int cardinality;
869:                /**
870:                 * An array holding the types of the arguments to the function
871:                 */
872:                public SequenceType[] argumentTypes;
873:            }
874:        }
875:
876:        //
877:        // The contents of this file are subject to the Mozilla Public License Version 1.0 (the "License];
878:        // you may not use this file except in compliance with the License. You may obtain a copy of the
879:        // License at http://www.mozilla.org/MPL/
880:        //
881:        // Software distributed under the License is distributed on an "AS IS" basis,
882:        // WITHOUT WARRANTY OF ANY KIND, either express or implied.
883:        // See the License for the specific language governing rights and limitations under the License.
884:        //
885:        // The Original Code is: all this file.
886:        //
887:        // The Initial Developer of the Original Code is Michael Kay
888:        //
889:        // Portions created by (your name) are Copyright (C) (your legal entity). All Rights Reserved.
890:        //
891:        // Contributor(s): none.
892:        //
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