1 | /******************************************************************************* |
2 | * Copyright (c) 2008, 2009 IBM Corporation and others. |
3 | * All rights reserved. This program and the accompanying materials |
4 | * are made available under the terms of the Eclipse Public License v1.0 |
5 | * which accompanies this distribution, and is available at |
6 | * http://www.eclipse.org/legal/epl-v10.html |
7 | * |
8 | * Contributors: |
9 | * IBM Corporation - initial API and implementation |
10 | *******************************************************************************/ |
11 | package org.eclipse.pde.api.tools.internal.util; |
12 | |
13 | import java.util.ArrayList; |
14 | import java.util.Iterator; |
15 | import java.util.List; |
16 | import java.util.StringTokenizer; |
17 | |
18 | import org.eclipse.core.runtime.Assert; |
19 | import org.eclipse.core.runtime.CoreException; |
20 | import org.eclipse.jdt.core.Signature; |
21 | import org.eclipse.jdt.core.dom.AST; |
22 | import org.eclipse.jdt.core.dom.ASTNode; |
23 | import org.eclipse.jdt.core.dom.AbstractTypeDeclaration; |
24 | import org.eclipse.jdt.core.dom.ArrayType; |
25 | import org.eclipse.jdt.core.dom.CompilationUnit; |
26 | import org.eclipse.jdt.core.dom.IExtendedModifier; |
27 | import org.eclipse.jdt.core.dom.MethodDeclaration; |
28 | import org.eclipse.jdt.core.dom.Modifier; |
29 | import org.eclipse.jdt.core.dom.PackageDeclaration; |
30 | import org.eclipse.jdt.core.dom.ParameterizedType; |
31 | import org.eclipse.jdt.core.dom.PrimitiveType; |
32 | import org.eclipse.jdt.core.dom.QualifiedType; |
33 | import org.eclipse.jdt.core.dom.SimpleType; |
34 | import org.eclipse.jdt.core.dom.SingleVariableDeclaration; |
35 | import org.eclipse.jdt.core.dom.Type; |
36 | import org.eclipse.pde.api.tools.internal.provisional.descriptors.IFieldDescriptor; |
37 | import org.eclipse.pde.api.tools.internal.provisional.descriptors.IMethodDescriptor; |
38 | import org.eclipse.pde.api.tools.internal.provisional.descriptors.IReferenceTypeDescriptor; |
39 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiField; |
40 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiMethod; |
41 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiType; |
42 | |
43 | /** |
44 | * This class contains utility methods for creating and working with |
45 | * Java element signatures. |
46 | * |
47 | * @since 1.0.0 |
48 | * @noinstantiate This class is not intended to be instantiated by clients. |
49 | */ |
50 | public final class Signatures { |
51 | |
52 | /** |
53 | * Constructor |
54 | */ |
55 | private Signatures() {} |
56 | |
57 | /** |
58 | * Collects which signature to use and de-qualifies it. If there is a generic signature |
59 | * it is returned, otherwise the standard signature is used |
60 | * @param method |
61 | * @return the de-qualified signature for the method |
62 | */ |
63 | public static String processMethodSignature(IApiMethod method) { |
64 | String signature = method.getGenericSignature(); |
65 | if(signature == null) { |
66 | signature = method.getSignature(); |
67 | } |
68 | return dequalifySignature(signature); |
69 | } |
70 | |
71 | /** |
72 | * Strips member type names off the signature and returns the primary type name. Member types are assumed |
73 | * to be delimited by the '$' character<br><br> |
74 | * For example:<br> |
75 | * <code>a.b.c.Type$Member -> a.b.c.Type</code><br> |
76 | * <code>x.y.z.Type -> x.y.z.Type</code><br> |
77 | * @param typename the type name to process |
78 | * @return the primary type name stripped off of the given type name |
79 | */ |
80 | public static String getPrimaryTypeName(String typename) { |
81 | int idx = typename.indexOf('$'); |
82 | if(idx > -1){ |
83 | return typename.substring(0, idx); |
84 | } |
85 | return typename; |
86 | } |
87 | |
88 | /** |
89 | * Returns the signature to use to display this {@link IApiMethod}. |
90 | * This method will load the enclosing type in the event the method is a constructor. |
91 | * @param method |
92 | * @return the display signature to use for this {@link IApiMethod} |
93 | * @throws CoreException if a lookup to the parent type of the method fails |
94 | */ |
95 | public static String getMethodSignature(IApiMethod method) throws CoreException { |
96 | String methodsig = method.getGenericSignature(); |
97 | if(methodsig == null) { |
98 | methodsig = method.getSignature(); |
99 | } |
100 | String methodname = getMethodName(method); |
101 | return Signature.toString(dequalifySignature(methodsig), methodname, null, false, false); |
102 | } |
103 | |
104 | /** |
105 | * Returns the signature of the method qualified with the given type |
106 | * @param type |
107 | * @param method |
108 | * @return the given type qualified signature of the given method |
109 | * @throws CoreException if a lookup to the parent type of the given method fails |
110 | */ |
111 | public static String getQualifiedMethodSignature(IApiMethod method) throws CoreException { |
112 | StringBuffer buffer = new StringBuffer(); |
113 | IApiType type = method.getEnclosingType(); |
114 | if(type != null) { |
115 | buffer.append(getQualifiedTypeSignature(type)).append('.'); |
116 | } |
117 | String methodsig = method.getGenericSignature(); |
118 | if(methodsig == null) { |
119 | methodsig = method.getSignature(); |
120 | } |
121 | String methodname = getMethodName(method); |
122 | buffer.append(Signature.toString(dequalifySignature(methodsig), methodname, null, false, false)); |
123 | return buffer.toString(); |
124 | } |
125 | |
126 | /** |
127 | * Returns the signature of the method qualified with the given type |
128 | * @param method |
129 | * @return the given type qualified signature of the given method |
130 | * @throws CoreException if a lookup to the parent type of the given method fails |
131 | */ |
132 | public static String getQualifiedMethodSignature(IMethodDescriptor method) throws CoreException { |
133 | StringBuffer buffer = new StringBuffer(); |
134 | IReferenceTypeDescriptor type = method.getEnclosingType(); |
135 | if(type != null) { |
136 | buffer.append(getQualifiedTypeSignature(type)).append('.'); |
137 | } |
138 | String methodsig = method.getSignature(); |
139 | String methodname = getMethodName(method); |
140 | buffer.append(Signature.toString(dequalifySignature(methodsig), methodname, null, false, false)); |
141 | return buffer.toString(); |
142 | } |
143 | |
144 | /** |
145 | * Returns the de-qualified method signature |
146 | * @param method |
147 | * @return the de-qualified method signature |
148 | * @throws CoreException |
149 | */ |
150 | public static String getMethodSignature(IMethodDescriptor method) throws CoreException { |
151 | StringBuffer buffer = new StringBuffer(); |
152 | String methodsig = method.getSignature(); |
153 | String methodname = getMethodName(method); |
154 | buffer.append(Signature.toString(dequalifySignature(methodsig), methodname, null, false, false)); |
155 | return buffer.toString(); |
156 | } |
157 | |
158 | /** |
159 | * Returns the name to use for the method. If the method is a constructor, |
160 | * the enclosing type is loaded to get its simple name |
161 | * @param method |
162 | * @return the name for the method. If the method is a constructor the simple name |
163 | * of the enclosing type is substituted. |
164 | * @throws CoreException |
165 | */ |
166 | public static String getMethodName(IApiMethod method) throws CoreException { |
167 | String mname = method.getName(); |
168 | if("<init>".equals(method.getName())) { //$NON-NLS-1$ |
169 | IApiType type = method.getEnclosingType(); |
170 | if(type != null) { |
171 | return type.getSimpleName(); |
172 | } |
173 | } |
174 | return mname; |
175 | } |
176 | |
177 | /** |
178 | * Returns the name to use for the method. If the method is a constructor, |
179 | * the enclosing type is loaded to get its simple name |
180 | * @param method |
181 | * @return the name for the method. If the method is a constructor the simple name |
182 | * of the enclosing type is substituted. |
183 | * @throws CoreException |
184 | */ |
185 | public static String getMethodName(IMethodDescriptor method) throws CoreException { |
186 | String mname = method.getName(); |
187 | if("<init>".equals(method.getName())) { //$NON-NLS-1$ |
188 | IReferenceTypeDescriptor type = method.getEnclosingType(); |
189 | if(type != null) { |
190 | return type.getName(); |
191 | } |
192 | } |
193 | return mname; |
194 | } |
195 | |
196 | /** |
197 | * Returns the unqualified signature of the given {@link IApiField} |
198 | * |
199 | * @param field |
200 | * @return the unqualified signature of the given {@link IApiField} |
201 | */ |
202 | public static String getFieldSignature(IApiField field) { |
203 | return field.getName(); |
204 | } |
205 | |
206 | /** |
207 | * Returns the type-qualified field signature |
208 | * @param field |
209 | * @return the type-qualified field signature |
210 | */ |
211 | public static String getQualifiedFieldSignature(IApiField field) throws CoreException { |
212 | StringBuffer buffer = new StringBuffer(); |
213 | IApiType type = field.getEnclosingType(); |
214 | if(type != null) { |
215 | buffer.append(getQualifiedTypeSignature(type)).append('.'); |
216 | } |
217 | buffer.append(field.getName()); |
218 | return buffer.toString(); |
219 | } |
220 | |
221 | /** |
222 | * Returns the type-qualified field signature |
223 | * @param field |
224 | * @return the type-qualified field signature |
225 | */ |
226 | public static String getQualifiedFieldSignature(IFieldDescriptor field) throws CoreException { |
227 | StringBuffer buffer = new StringBuffer(); |
228 | IReferenceTypeDescriptor type = field.getEnclosingType(); |
229 | if(type != null) { |
230 | buffer.append(getQualifiedTypeSignature(type)).append('.'); |
231 | } |
232 | buffer.append(field.getName()); |
233 | return buffer.toString(); |
234 | } |
235 | |
236 | /** |
237 | * Returns the type signature to use for displaying the given {@link IApiType} |
238 | * @param type |
239 | * @return the display signature to use for the given {@link IApiType} |
240 | */ |
241 | public static String getQualifiedTypeSignature(IApiType type) { |
242 | return getTypeSignature(type.getSignature(), type.getGenericSignature(), true); |
243 | } |
244 | |
245 | /** |
246 | * Returns the type signature to use for displaying the given {@link IReferenceTypeDescriptor} |
247 | * @param type |
248 | * @return the display signature to use for the given {@link IReferenceTypeDescriptor} |
249 | */ |
250 | public static String getQualifiedTypeSignature(IReferenceTypeDescriptor type) { |
251 | return getTypeSignature(type.getSignature(), type.getGenericSignature(), true); |
252 | } |
253 | |
254 | /** |
255 | * Returns the de-qualified signature for the given {@link IApiType} |
256 | * |
257 | * @param type the type to get the signature for |
258 | * @return the de-qualified signature for the given {@link IApiType} |
259 | */ |
260 | public static String getTypeSignature(IApiType type) { |
261 | return getTypeSignature(type.getSignature(), type.getGenericSignature(), false); |
262 | } |
263 | |
264 | /** |
265 | * Returns the display-able representation of the given signature and generic signature |
266 | * @param signature |
267 | * @param genericsignature |
268 | * @param qualified |
269 | * @return |
270 | */ |
271 | public static String getTypeSignature(String signature, String genericsignature, boolean qualified) { |
272 | StringBuffer buffer = new StringBuffer(); |
273 | String sig = signature.replace('/', '.'); |
274 | if(qualified == false) { |
275 | sig = dequalifySignature(sig); |
276 | } |
277 | buffer.append(Signature.toString(sig.replace('$', '.'))); |
278 | if(genericsignature != null) { |
279 | appendTypeParameters(buffer, Signature.getTypeParameters(genericsignature.replace('/', '.'))); |
280 | } |
281 | return buffer.toString(); |
282 | } |
283 | |
284 | /** |
285 | * Returns the name of an anonymous or local type with all |
286 | * qualification removed. |
287 | * For example: |
288 | * <pre><code> |
289 | * Class$3inner --> inner |
290 | * Class$3 --> null |
291 | * </code></pre> |
292 | * @param name the name to resolve |
293 | * @return the name of an anonymous or local type with qualification removed or <code>null</code> |
294 | * if the anonymous type has no name |
295 | */ |
296 | public static String getAnonymousTypeName(String name) { |
297 | if(name != null) { |
298 | int idx = name.lastIndexOf('$'); |
299 | if(idx > -1) { |
300 | String num = name.substring(idx+1, name.length()); |
301 | try { |
302 | Integer.parseInt(num); |
303 | return null; |
304 | } |
305 | catch(NumberFormatException nfe) {} |
306 | for(int i = 0; i < name.length(); i++) { |
307 | if(!Character.isDigit(num.charAt(i))) { |
308 | return num.substring(i, num.length()); |
309 | } |
310 | } |
311 | } |
312 | } |
313 | return null; |
314 | } |
315 | |
316 | /** |
317 | * Appends the given listing of type parameter names to the signature contained in the |
318 | * given buffer |
319 | * @param buffer |
320 | * @param parameters |
321 | */ |
322 | public static void appendTypeParameters(StringBuffer buffer, String[] parameters) { |
323 | if(parameters == null) { |
324 | return; |
325 | } |
326 | if(parameters.length == 0) { |
327 | return; |
328 | } |
329 | buffer.append(getLT()); |
330 | for(int i = 0; i < parameters.length; i++) { |
331 | if(i > 0) { |
332 | buffer.append(getComma()); |
333 | } |
334 | buffer.append(Signature.getTypeVariable(parameters[i])); |
335 | } |
336 | buffer.append(getGT()); |
337 | } |
338 | |
339 | /** |
340 | * Returns a comma and space used for displaying comma-separated lists |
341 | * in signatures. |
342 | * |
343 | * @return the string rendering for a comma and following space |
344 | */ |
345 | public static String getComma() { |
346 | return ", "; //$NON-NLS-1$ |
347 | } |
348 | |
349 | /** |
350 | * Returns the string for rendering the '<code><</code>' character. |
351 | * |
352 | * @return the string for rendering '<code><</code>' |
353 | */ |
354 | public static String getLT() { |
355 | return "<"; //$NON-NLS-1$ |
356 | } |
357 | |
358 | /** |
359 | * Returns the string for rendering the '<code>></code>' character. |
360 | * |
361 | * @return the string for rendering '<code>></code>' |
362 | */ |
363 | public static String getGT() { |
364 | return ">"; //$NON-NLS-1$ |
365 | } |
366 | |
367 | /** |
368 | * Convert fully qualified signature to unqualified one. |
369 | * The descriptor can be dot or slashed based. |
370 | * |
371 | * @param descriptor the given descriptor to convert |
372 | * @return the converted signature |
373 | */ |
374 | public static String dequalifySignature(String signature) { |
375 | StringBuffer buffer = new StringBuffer(); |
376 | char[] chars = signature.toCharArray(); |
377 | for (int i = 0, max = chars.length; i < max; i++) { |
378 | char currentChar = chars[i]; |
379 | switch(currentChar) { |
380 | case 'L' : { |
381 | if(chars[i+1] != ';') { |
382 | buffer.append('Q'); |
383 | // read reference type |
384 | int lastDotPosition = i; |
385 | i++; |
386 | while(i < chars.length && currentChar != ';' && currentChar != '<' ) { |
387 | switch(currentChar) { |
388 | case '/' : |
389 | case '.' : |
390 | lastDotPosition = i; |
391 | break; |
392 | } |
393 | i++; |
394 | currentChar = chars[i]; |
395 | } |
396 | buffer.append(chars, lastDotPosition + 1, i - lastDotPosition - 1); |
397 | buffer.append(currentChar); |
398 | } |
399 | else { |
400 | buffer.append(currentChar); |
401 | } |
402 | break; |
403 | } |
404 | case 'Q': { |
405 | while(i < chars.length && currentChar != ';') { |
406 | buffer.append(currentChar); |
407 | currentChar = chars[++i]; |
408 | } |
409 | } |
410 | //$FALL-THROUGH$ |
411 | default: { |
412 | buffer.append(currentChar); |
413 | } |
414 | } |
415 | } |
416 | return String.valueOf(buffer); |
417 | } |
418 | |
419 | /** |
420 | * Creates a method signature from a specified {@link MethodDeclaration} |
421 | * @param node |
422 | * @return the signature for the given method node or <code>null</code> |
423 | */ |
424 | public static String getMethodSignatureFromNode(MethodDeclaration node) { |
425 | Assert.isNotNull(node); |
426 | List params = node.parameters(); |
427 | List rparams = Signatures.getParametersTypeNames(params); |
428 | if(rparams.size() == params.size()) { |
429 | if(!node.isConstructor()) { |
430 | Type returnType = getType(node); |
431 | if (returnType != null) { |
432 | String rtype = Signatures.getTypeSignature(returnType); |
433 | if(rtype != null) { |
434 | return Signature.createMethodSignature((String[]) rparams.toArray(new String[rparams.size()]), rtype); |
435 | } |
436 | } |
437 | } |
438 | else { |
439 | Signatures.collectSyntheticParam(node, rparams); |
440 | return Signature.createMethodSignature((String[]) rparams.toArray(new String[rparams.size()]), Signature.SIG_VOID); |
441 | } |
442 | } |
443 | return null; |
444 | } |
445 | |
446 | /** |
447 | * Returns the listing of the signatures of the parameters passed in, where the |
448 | * list elements are all {@link SingleVariableDeclaration}s and the elements in the returned list are |
449 | * of type {@link String} |
450 | * @param rawparams |
451 | * @return a listing of signatures for the specified parameters |
452 | */ |
453 | private static List getParametersTypeNames(List rawparams) { |
454 | List rparams = new ArrayList(rawparams.size()); |
455 | SingleVariableDeclaration param = null; |
456 | String pname = null; |
457 | for(Iterator iter = rawparams.iterator(); iter.hasNext();) { |
458 | param = (SingleVariableDeclaration) iter.next(); |
459 | pname = Signatures.getTypeSignature(getType(param)); |
460 | if(pname != null) { |
461 | rparams.add(pname); |
462 | } |
463 | } |
464 | return rparams; |
465 | } |
466 | |
467 | /* |
468 | * This is called for SingleVariableDeclaration and MethodDeclaration |
469 | */ |
470 | private static Type getType(ASTNode node) { |
471 | switch(node.getNodeType()) { |
472 | case ASTNode.SINGLE_VARIABLE_DECLARATION : { |
473 | SingleVariableDeclaration param = (SingleVariableDeclaration) node; |
474 | Type type = param.getType(); |
475 | int extraDim = param.getExtraDimensions(); |
476 | |
477 | if (extraDim == 0) { |
478 | return type; |
479 | } |
480 | AST ast = type.getAST(); |
481 | type = (Type) ASTNode.copySubtree(ast, type); |
482 | for (int i = 0; i < extraDim; i++) { |
483 | type = ast.newArrayType(type); |
484 | } |
485 | return type; |
486 | } |
487 | default: { |
488 | // ASTNode.METHOD_DECLARATION |
489 | MethodDeclaration methodDeclaration = (MethodDeclaration) node; |
490 | Type type = methodDeclaration.getReturnType2(); |
491 | int extraDim = methodDeclaration.getExtraDimensions(); |
492 | |
493 | if (extraDim == 0) { |
494 | return type; |
495 | } |
496 | AST ast = type.getAST(); |
497 | type = (Type) ASTNode.copySubtree(ast, type); |
498 | for (int i = 0; i < extraDim; i++) { |
499 | type = ast.newArrayType(type); |
500 | } |
501 | return type; |
502 | } |
503 | } |
504 | } |
505 | |
506 | /** |
507 | * Returns the simple name of the type, by stripping off the last '.' segment and returning it. |
508 | * This method assumes that qualified type names are '.' separated. If the type specified is a package |
509 | * than an empty string is returned. |
510 | * @param qualifiedname the fully qualified name of a type, '.' separated (e.g. a.b.c.Type) |
511 | * @return the simple name from the qualified name. For example if the qualified name is a.b.c.Type this method |
512 | * will return Type (stripping off the package qualification) |
513 | */ |
514 | public static String getTypeName(String qualifiedname) { |
515 | int idx = qualifiedname.lastIndexOf('.'); |
516 | idx++; |
517 | if(idx > 0) { |
518 | return qualifiedname.substring(idx, qualifiedname.length()); |
519 | } |
520 | // default package |
521 | return qualifiedname; |
522 | } |
523 | |
524 | /** |
525 | * Processes the signature for the given {@link Type} |
526 | * @param type the type to process |
527 | * @return the signature for the type or <code>null</code> if one could not be |
528 | * derived |
529 | */ |
530 | public static String getTypeSignature(Type type) { |
531 | switch(type.getNodeType()) { |
532 | case ASTNode.SIMPLE_TYPE: { |
533 | return Signature.createTypeSignature(((SimpleType) type).getName().getFullyQualifiedName(), false); |
534 | } |
535 | case ASTNode.QUALIFIED_TYPE: { |
536 | return Signature.createTypeSignature(((QualifiedType)type).getName().getFullyQualifiedName(), false); |
537 | } |
538 | case ASTNode.ARRAY_TYPE: { |
539 | ArrayType a = (ArrayType) type; |
540 | return Signature.createArraySignature(getTypeSignature(a.getElementType()), a.getDimensions()); |
541 | } |
542 | case ASTNode.PARAMETERIZED_TYPE: { |
543 | //we don't need to care about the other scoping types only the base type |
544 | return getTypeSignature(((ParameterizedType) type).getType()); |
545 | } |
546 | case ASTNode.PRIMITIVE_TYPE: { |
547 | return Signature.createTypeSignature(((PrimitiveType)type).getPrimitiveTypeCode().toString(), false); |
548 | } |
549 | } |
550 | return null; |
551 | } |
552 | |
553 | /** |
554 | * Returns if the given signatures match. Where signatures are considered to match |
555 | * iff the return type, name and parameters are the same. |
556 | * @param signature |
557 | * @param signature2 |
558 | * @return true if the signatures are equal, false otherwise |
559 | */ |
560 | public static boolean matchesSignatures(String signature, String signature2) { |
561 | if (!matches(Signature.getReturnType(signature), Signature.getReturnType(signature2))) { |
562 | return false; |
563 | } |
564 | String[] parameterTypes = Signature.getParameterTypes(signature); |
565 | String[] parameterTypes2 = Signature.getParameterTypes(signature2); |
566 | int length = parameterTypes.length; |
567 | int length2 = parameterTypes2.length; |
568 | if (length != length2) return false; |
569 | for (int i = 0; i < length2; i++) { |
570 | if (!matches(parameterTypes[i], parameterTypes2[i])) { |
571 | return false; |
572 | } |
573 | } |
574 | return true; |
575 | } |
576 | |
577 | /** |
578 | * Returns if the two types match. Types are considered to match |
579 | * iff the type name and array count (if any) are the same |
580 | * @param type |
581 | * @param type2 |
582 | * @return true if the type names match, false otherwise |
583 | */ |
584 | private static boolean matches(String type, String type2) { |
585 | if (Signature.getArrayCount(type) == Signature.getArrayCount(type2)) { |
586 | String el1 = Signature.getElementType(type); |
587 | String el2 = Signature.getElementType(type2); |
588 | String[] typeargs1 = Signature.getTypeArguments(el1); |
589 | String[] typeargs2 = Signature.getTypeArguments(el2); |
590 | if(typeargs1.length == typeargs2.length) { |
591 | if(typeargs1.length > 0) { |
592 | for(int i = 0; i < typeargs1.length; i++) { |
593 | if(!matches(typeargs1[i], typeargs2[i])) { |
594 | return false; |
595 | } |
596 | } |
597 | return true; |
598 | } |
599 | else { |
600 | String signatureSimpleName = Signature.getSignatureSimpleName(el1); |
601 | String signatureSimpleName2 = Signature.getSignatureSimpleName(el2); |
602 | if (signatureSimpleName.equals(signatureSimpleName2)) { |
603 | return true; |
604 | } |
605 | int index = signatureSimpleName2.lastIndexOf('.'); |
606 | if (index != -1) { |
607 | // the right side is a member type |
608 | return signatureSimpleName.equals(signatureSimpleName2.subSequence(index + 1, signatureSimpleName2.length())); |
609 | } |
610 | } |
611 | } |
612 | } |
613 | return false; |
614 | } |
615 | |
616 | /** |
617 | * Returns if the specified signature is qualified or not. |
618 | * Qualification is determined if there is a token in the signature the begins with an 'L'. |
619 | * @param signature |
620 | * @return true if the signature is qualified, false otherwise |
621 | */ |
622 | public static boolean isQualifiedSignature(String signature) { |
623 | StringTokenizer tokenizer = new StringTokenizer(signature, "();IJCSBDFTZ!["); //$NON-NLS-1$ |
624 | if(tokenizer.hasMoreTokens()) { |
625 | return tokenizer.nextToken().charAt(0) == 'L'; |
626 | } |
627 | return false; |
628 | } |
629 | |
630 | /** |
631 | * The type name is dot-separated |
632 | * @param typeName the given type name |
633 | * @return the package name for the given type name or an empty string if none |
634 | */ |
635 | public static String getPackageName(String typeName) { |
636 | int index = typeName.lastIndexOf('.'); |
637 | return index == -1 ? Util.DEFAULT_PACKAGE_NAME : typeName.substring(0, index); |
638 | } |
639 | |
640 | /** |
641 | * Collects the synthetic parameter of the fully qualified name of the enclosing context for a constructor of an inner type |
642 | * @param method the constructor declaration |
643 | * @param rparams the listing of parameters to add to |
644 | */ |
645 | static void collectSyntheticParam(final MethodDeclaration method, List rparams) { |
646 | Assert.isNotNull(method); |
647 | if(Signatures.isInTopLevelType(method)) { |
648 | return; |
649 | } |
650 | ASTNode parent = method.getParent(); |
651 | AbstractTypeDeclaration type = (AbstractTypeDeclaration) parent; |
652 | if (Signatures.isStatic(type)) { |
653 | // if the type is static it doesn't need the enclosing type |
654 | return; |
655 | } |
656 | StringBuffer name = new StringBuffer(); |
657 | while(parent != null) { |
658 | parent = parent.getParent(); |
659 | if(parent instanceof AbstractTypeDeclaration) { |
660 | type = (AbstractTypeDeclaration) parent; |
661 | name.insert(0, type.getName().getFullyQualifiedName()); |
662 | if(type.isMemberTypeDeclaration()) { |
663 | name.insert(0, '$'); |
664 | } |
665 | continue; |
666 | } |
667 | if(parent instanceof CompilationUnit) { |
668 | CompilationUnit cunit = (CompilationUnit) parent; |
669 | PackageDeclaration pdec = cunit.getPackage(); |
670 | if(pdec != null) { |
671 | name.insert(0, '.'); |
672 | name.insert(0, cunit.getPackage().getName().getFullyQualifiedName()); |
673 | } |
674 | } |
675 | } |
676 | name.insert(0, "L"); //$NON-NLS-1$ |
677 | name.append(';'); |
678 | if(name.length() > 2) { |
679 | rparams.add(0, name.toString()); |
680 | } |
681 | } |
682 | |
683 | /** |
684 | * Returns if the {@link AbstractTypeDeclaration} is static or not (has the static |
685 | * keyword or not) |
686 | * |
687 | * @param typeDeclaration |
688 | * @return true if it is static, false otherwise |
689 | */ |
690 | static boolean isStatic(AbstractTypeDeclaration typeDeclaration) { |
691 | List modifiers = typeDeclaration.modifiers(); |
692 | if (modifiers.isEmpty()) return false; |
693 | for (Iterator iterator = modifiers.iterator(); iterator.hasNext(); ) { |
694 | IExtendedModifier modifier = (IExtendedModifier) iterator.next(); |
695 | if (!modifier.isModifier()) { |
696 | continue; |
697 | } |
698 | Modifier modifier2 = (Modifier) modifier; |
699 | if (modifier2.isStatic()) return true; |
700 | } |
701 | return false; |
702 | } |
703 | |
704 | /** |
705 | * Determines if the given {@link MethodDeclaration} is present in a top level type |
706 | * @param method the given method |
707 | * @return true if the given {@link MethodDeclaration} is present in a top level type, false otherwise |
708 | */ |
709 | static boolean isInTopLevelType(final MethodDeclaration method) { |
710 | AbstractTypeDeclaration type = (AbstractTypeDeclaration) method.getParent(); |
711 | return type != null && type.isPackageMemberTypeDeclaration(); |
712 | } |
713 | |
714 | /** |
715 | * Returns the type name with any package qualification removed.<br><br> |
716 | * For example:<br> |
717 | * <code>a.b.c.Type -> Type</code><br> |
718 | * <code>a.b.c.Type$Member -> Type$Member</code> |
719 | * @param referencedTypeName |
720 | * @return the type name with package qualification removed |
721 | */ |
722 | public static String getSimpleTypeName(String referencedTypeName) { |
723 | int index = referencedTypeName.lastIndexOf('.'); |
724 | if (index == -1) { |
725 | return referencedTypeName; |
726 | } |
727 | return referencedTypeName.substring(index + 1); |
728 | } |
729 | } |