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1
28
29 package com.caucho.jsp.java;
30
31 import com.caucho.config.types.Signature;
32 import com.caucho.jsp.JspParseException;
33 import com.caucho.jsp.ParseTagManager;
34 import com.caucho.jsp.cfg.TldAttribute;
35 import com.caucho.jsp.cfg.TldTag;
36 import com.caucho.jsp.cfg.TldVariable;
37 import com.caucho.log.Log;
38 import com.caucho.util.L10N;
39
40 import javax.servlet.jsp.tagext.TagInfo  ;
41 import javax.servlet.jsp.tagext.TagLibraryInfo ;
42 import java.io.IOException ;
43 import java.util.ArrayList ;
44 import java.util.HashSet ;
45 import java.util.logging.Level ;
46 import java.util.logging.Logger ;
47
48
56 public class JavaTagGenerator extends JavaJspGenerator {
57 static final L10N L = new L10N(JavaTagGenerator.class);
58 static final Logger log = Log.open(JavaTagGenerator.class);
59
60 private static HashSet <String > _reserved
61 = new HashSet <String >();
62
63 private String _description = null;
64 private String _displayName = null;
65 private String _smallIcon = null;
66 private String _largeIcon = null;
67 private String _example = null;
68 private String _bodyContent = null;
69 private String _dynamicAttributes = null;
70
71 private ArrayList <TldAttribute> _attributes = new ArrayList <TldAttribute>();
72 private ArrayList <TldVariable> _variables = new ArrayList <TldVariable>();
73
74 public JavaTagGenerator(ParseTagManager tagManager)
75 {
76 super(tagManager);
77
78 setOmitXmlDeclaration(true);
79 }
80
81 public void init()
82 {
83 super.init();
84
85 setOmitXmlDeclaration(true);
86 }
87
88
91
98
99 public void setDescription(String description)
100 {
101 _description = description;
102 }
103
104 public String getDescription()
105 {
106 return _description;
107 }
108
109 public void setDisplayName(String displayName)
110 {
111 _displayName = displayName;
112 }
113
114 public String getDisplayName()
115 {
116 return _displayName;
117 }
118
119 public void setSmallIcon(String smallIcon)
120 {
121 _smallIcon = smallIcon;
122 }
123
124 public String getSmallIcon()
125 {
126 return _smallIcon;
127 }
128
129 public void setLargeIcon(String largeIcon)
130 {
131 _largeIcon = largeIcon;
132 }
133
134 public String getLargeIcon()
135 {
136 return _largeIcon;
137 }
138
139 public void setExample(String example)
140 {
141 _example = example;
142 }
143
144 public String getExample()
145 {
146 return _example;
147 }
148
149
152 public void setBodyContent(String bodyContent)
153 {
154 _bodyContent = bodyContent;
155 }
156
157
160 public String getBodyContent()
161 {
162 return _bodyContent;
163 }
164
165
168 public void setDynamicAttributes(String dynamicAttributes)
169 {
170 _dynamicAttributes = dynamicAttributes;
171 }
172
173
176 public String getDynamicAttributes()
177 {
178 return _dynamicAttributes;
179 }
180
181
184 public void addAttribute(TldAttribute attribute)
185 {
186 _attributes.add(attribute);
187 }
188
189
192 public ArrayList <TldAttribute> getAttributes()
193 {
194 return _attributes;
195 }
196
197
200 public TldAttribute findAttribute(String name)
201 {
202 for (int i = 0; i < _attributes.size(); i++) {
203 TldAttribute attr = _attributes.get(i);
204
205 if (name.equals(attr.getName()))
206 return attr;
207 }
208
209 return null;
210 }
211
212
215 public void addVariable(TldVariable var)
216 {
217 _variables.add(var);
218 }
219
220
223 public TldVariable findVariable(String name)
224 {
225 for (int i = 0; i < _variables.size(); i++) {
226 TldVariable var = _variables.get(i);
227
228 if (name.equals(var.getNameGiven())
230 || name.equals(var.getAlias()))
231 return var;
232 }
233
234 return null;
235 }
236
237
240 public ArrayList <TldVariable> getVariables()
241 {
242 return _variables;
243 }
244
245 public boolean isTag()
246 {
247 return true;
248 }
249
250
253 boolean isXml()
254 {
255 return _parseState.isXml();
256 }
257
258
261 protected void generate(JspJavaWriter out)
262 throws Exception
263 {
264 out.setLineMap(_lineMap);
265
266 generateClassHeader(out);
267
268 generateAttributes(out);
269
270 if (_dynamicAttributes != null)
271 generateDynamicAttributes(out);
272
273 generateDoTag(out, _rootNode);
274
275 if (isStaticDoTag())
276 generateStaticDoTag(out, _rootNode);
277
278 generateTagInfo(out);
279
280 generateClassFooter(out);
281 }
282
283 protected boolean isStaticDoTag()
284 {
285 return ! hasScripting();
286 }
287
288
293 protected void generateClassHeader(JspJavaWriter out)
294 throws IOException , JspParseException
295 {
296 out.println("/*");
297 out.println(" * JSP-Tag generated by " + com.caucho.Version.FULL_VERSION);
298 out.println(" */" );
299 out.println();
300
301 if (_pkg != null && ! _pkg.equals(""))
302 out.println("package " + _pkg + ";");
303
304 out.println("import javax.servlet.*;");
305 out.println("import javax.servlet.jsp.*;");
306 out.println("import javax.servlet.http.*;");
307
308 fillSingleTaglibImports();
309
310 ArrayList <String > imports = _parseState.getImportList();
311 for (int i = 0; i < imports.size(); i++) {
312 String name = imports.get(i);
313 out.print("import ");
314 out.print(name);
315 out.println(";");
316 }
317 _parseState.addImport("javax.servlet.*");
318 _parseState.addImport("javax.servlet.jsp.*");
319 _parseState.addImport("javax.servlet.http.*");
320 _parseState.addImport("java.lang.*");
321 out.println();
322
323 out.print("public class ");
324 out.print(_className);
325
326 if (hasScripting())
327 out.print(" extends com.caucho.jsp.java.JspTagSupport");
328 else
329 out.print(" extends com.caucho.jsp.java.JspTagFileSupport");
330
331 if (_dynamicAttributes != null)
332 out.print(" implements javax.servlet.jsp.tagext.DynamicAttributes");
333
334 out.println(" {");
335 out.pushDepth();
336
337 out.println("private final java.util.HashMap<String,java.lang.reflect.Method> _jsp_functionMap = new java.util.HashMap<String,java.lang.reflect.Method>();");
338
339 out.println("private boolean _caucho_isDead;");
340
341 for (int i = 0; i < _declarations.size(); i++) {
342 JspDeclaration decl = _declarations.get(i);
343
344 out.println();
345 decl.generateDeclaration(out);
346 }
347 }
348
349
354 protected void generateAttributes(JspJavaWriter out)
355 throws IOException , JspParseException
356 {
357 for (int i = 0; i < _attributes.size(); i++) {
358 TldAttribute attr = _attributes.get(i);
359
360 String name = attr.getName();
361
362 String upperName;
363 char ch = name.charAt(0);
364 upperName = Character.toUpperCase(ch) + name.substring(1);
365
366 Class cl = attr.getType();
367 if (cl == null)
368 cl = String .class;
369 String type = cl.getName();
370
371 String isSetName = "_jsp_" + name + "_isSet";
372
373 String fieldName = toFieldName(name);
374
375 out.println();
376 out.print("private ");
377 out.printClass(cl);
378 out.println(" " + fieldName + ";");
379 out.println("private boolean " + isSetName + ";");
380
381 out.println();
382 out.print("public void set" + upperName + "(");
383 out.printClass(cl);
384 out.println(" value)");
385 out.println("{");
386 out.pushDepth();
387 out.println("this." + isSetName + " = true;");
388 out.println("this." + fieldName + " = value;");
389 out.popDepth();
390 out.println("}");
391
392
402 }
403 }
404
405
410 protected void generateDynamicAttributes(JspJavaWriter out)
411 throws IOException , JspParseException
412 {
413 String dyn = toFieldName(_dynamicAttributes);
414
415 out.println();
416 out.println("java.util.HashMap " + dyn + " = new java.util.HashMap();");
417 out.println();
418 out.println("public void setDynamicAttribute(String uri, String localName, Object value)");
419 out.println(" throws javax.servlet.jsp.JspException");
420 out.println("{");
421 out.println(" if (uri == null || \"\".equals(uri))");
422 out.println(" " + dyn + ".put(localName, value);");
423 out.println("}");
424 }
425
426
429 protected void generateDoTag(JspJavaWriter out, JspNode node)
430 throws Exception
431 {
432 out.println();
433 out.println("public void doTag()");
434 out.println(" throws javax.servlet.jsp.JspException, java.io.IOException");
435 out.println("{");
436 out.pushDepth();
437
438 out.println("javax.servlet.jsp.JspContext _jsp_parentContext = getJspContext();");
439 out.println("com.caucho.jsp.PageContextWrapper pageContext = com.caucho.jsp.PageContextWrapper.create(_jsp_parentContext);");
440 out.println("setJspContext(pageContext);");
442
443 if (hasScripting()) {
444 out.println("javax.servlet.http.HttpServletRequest request = (javax.servlet.http.HttpServletRequest) pageContext.getRequest();");
445 out.println("javax.servlet.http.HttpServletResponse response = (javax.servlet.http.HttpServletResponse) pageContext.getResponse();");
446 out.println("javax.servlet.http.HttpSession session = pageContext.getSession();");
447 out.println("javax.servlet.ServletContext application = pageContext.getServletContext();");
448 out.println("javax.servlet.ServletConfig config = pageContext.getServletConfig();");
449 }
450
451 out.println("com.caucho.jsp.PageContextWrapper jspContext = pageContext;");
452 out.println("javax.el.ELContext _jsp_env = pageContext.getELContext();");
453 out.println("javax.servlet.jsp.JspWriter out = pageContext.getOut();");
454 generateTagAttributes(out);
455 if (hasScripting())
456 generatePrologue(out);
457
458 out.println("try {");
459 out.pushDepth();
460
461 if (hasScripting()) {
462 node.generate(out);
463
464 generateTagVariablesAtEnd(out);
465 } else {
466 out.println("doTag(_jsp_parentContext, pageContext, out, null);");
467 }
468
469 out.popDepth();
470 out.println("} catch (Throwable e) {");
471 out.println(" if (e instanceof java.io.IOException)");
472 out.println(" throw (java.io.IOException) e;");
473 out.println(" throw com.caucho.jsp.QJspException.createJspException(e);");
474 out.println("}");
475
476 if (hasScripting() && _variables.size() > 0) {
477 out.println("finally {");
478 out.pushDepth();
479
480 generateTagVariablesAtEnd(out);
481
482 out.println("setJspContext(_jsp_parentContext);");
483 out.println("com.caucho.jsp.PageContextWrapper.free(pageContext);");
484
485 out.popDepth();
486 out.println("}");
487 }
488
489 out.popDepth();
490 out.println("}");
491 }
492
493
498 protected void generateTagAttributes(JspJavaWriter out)
499 throws IOException , JspParseException
500 {
501 for (int i = 0; i < _attributes.size(); i++) {
502 TldAttribute attr = _attributes.get(i);
503
504 String name = attr.getName();
505
506 String upperName;
507 char ch = name.charAt(0);
508 upperName = Character.toUpperCase(ch) + name.substring(1);
509
510 Class cl = attr.getType();
511 if (cl == null)
512 cl = String .class;
513 String type = cl.getName();
514
515 String isSetName = "_jsp_" + name + "_isSet";
516 String fieldName = toFieldName(name);
517
518 out.println("if (" + isSetName + ")");
519 out.println(" pageContext.setAttribute(\"" + name + "\", " +
520 JspNode.toELObject(fieldName, cl) + ");");
521 }
522
523 if (_dynamicAttributes != null) {
525 out.println("pageContext.setAttribute(\"" + _dynamicAttributes + "\"," +
526 toFieldName(_dynamicAttributes) + ");");
527 }
528 }
529
530
533 protected void generateStaticDoTag(JspJavaWriter out, JspNode node)
534 throws Exception
535 {
536 out.println();
537 out.println("public static void doTag(javax.servlet.jsp.JspContext _jsp_parentContext,");
538 out.println(" com.caucho.jsp.PageContextWrapper pageContext,");
539 out.println(" javax.servlet.jsp.JspWriter out,");
540 out.println(" javax.servlet.jsp.tagext.JspFragment _jspBody)");
541 out.println(" throws Throwable");
542 out.println("{");
543 out.pushDepth();
544
545 out.println("javax.el.ELContext _jsp_env = pageContext.getELContext();");
546 generatePrologue(out);
547
548 out.println("try {");
549 out.pushDepth();
550
551 node.generate(out);
552
553 out.popDepth();
554 out.println("} finally {");
555 out.pushDepth();
556
557 generateTagVariablesAtEnd(out);
558
559 out.println("com.caucho.jsp.PageContextWrapper.free(pageContext);");
560
561 out.popDepth();
562 out.println("}");
563
564 out.popDepth();
565 out.println("}");
566 }
567
568
573 protected void generatePrologue(JspJavaWriter out)
574 throws Exception
575 {
576 _rootNode.generatePrologue(out);
577
578 for (int i = 0; i < _variables.size(); i++) {
579 TldVariable var = _variables.get(i);
580
581 if (var.getNameFromAttribute() != null) {
582 out.print("String _jsp_var_from_attribute_" + i + " = (String) ");
583 out.println("pageContext.getAttribute(\"" +
584 var.getNameFromAttribute() + "\");");
585 }
586
587 if ("AT_END".equals(var.getScope()))
588 continue;
589
590 String srcName = var.getNameGiven();
591 if (srcName == null)
592 srcName = var.getAlias();
593
594 String dstName;
595 if (var.getNameGiven() != null)
596 dstName = "\"" + var.getNameGiven() + "\"";
597 else
598 dstName = "_jsp_var_from_attribute_" + i;
599
600 if ("NESTED".equals(var.getScope())) {
601 out.print("Object _jsp_nested_var_" + i + " = ");
602 out.println("_jsp_parentContext.getAttribute(" + dstName + ");");
603 }
604
610 }
611 }
612
613
618 protected void generateTagVariablesAtEnd(JspJavaWriter out)
619 throws IOException , JspParseException
620 {
621 for (int i = 0; i < _variables.size(); i++) {
622 TldVariable var = _variables.get(i);
623
624 String srcName = var.getNameGiven();
625 if (srcName == null)
626 srcName = var.getAlias();
627
628 String dstName;
629 if (var.getNameGiven() != null)
630 dstName = "\"" + var.getNameGiven() + "\"";
631 else
632 dstName = "_jsp_var_from_attribute_" + i;
633
634 if ("NESTED".equals(var.getScope())) {
635 out.println("_jsp_parentContext.setAttribute(" + dstName + ", _jsp_nested_var_" + i + ");");
636 }
637 else {
638 out.print("_jsp_parentContext.setAttribute(" + dstName + ",");
639 out.println("pageContext.getAttribute(\"" + srcName + "\"));");
640 }
641 }
642 }
643
644 public TagInfo generateTagInfo(String className, TagLibraryInfo taglib)
645 {
646 init(className);
647
648 TldTag tag = new TldTag();
649
650 for (int i = 0; i < _attributes.size(); i++) {
651 TldAttribute attr = _attributes.get(i);
652
653 tag.addAttribute(attr);
654 }
655
656 for (int i = 0; i < _variables.size(); i++) {
657 TldVariable var = _variables.get(i);
658
659 try {
660 tag.addVariable(var);
661 } catch (Exception e) {
662 log.log(Level.WARNING, e.toString(), e);
663 }
664 }
665
666 String bodyContent = _bodyContent;
667 if (bodyContent == null)
668 bodyContent = "scriptless";
669
670 return new TagInfoExt(tag.getName(),
671 _fullClassName,
672 bodyContent,
673 getDescription(),
674 taglib,
675 null,
676 tag.getAttributes(),
677 getDisplayName(),
678 getSmallIcon(),
679 getLargeIcon(),
680 tag.getVariables(),
681 _dynamicAttributes != null,
682 _dynamicAttributes,
683 null);
684 }
685
686
691 protected void generateTagInfo(JspJavaWriter out)
692 throws IOException , JspParseException
693 {
694
704
705 out.println();
706 out.println("public javax.servlet.jsp.tagext.TagInfo _caucho_getTagInfo(javax.servlet.jsp.tagext.TagLibraryInfo taglib)");
707 out.println(" throws com.caucho.config.ConfigException");
708 out.println("{");
709 out.pushDepth();
710 out.println("com.caucho.jsp.cfg.TldTag tag = new com.caucho.jsp.cfg.TldTag();");
711
712 out.println("tag.setName(\"test\");");
713
714 out.println("com.caucho.jsp.cfg.TldAttribute attr;");
715 for (int i = 0; i < _attributes.size(); i++) {
716 TldAttribute attr = _attributes.get(i);
717
718 out.println("attr = new com.caucho.jsp.cfg.TldAttribute();");
719 out.println("attr.setName(\"" + attr.getName() + "\");");
720
721 Class type = attr.getType();
722 if (type != null) {
723 out.print("attr.setType(");
724 out.printClass(type);
725 out.println(".class);");
726 }
727 out.println("attr.setRtexprvalue(" + attr.getRtexprvalue() + ");");
728 out.println("attr.setRequired(" + attr.getRequired() + ");");
729
730 if (attr.getDeferredValue() != null) {
731 out.println("attr.setDeferredValue(new com.caucho.jsp.cfg.TldAttribute.DeferredValue());");
732
733 if (attr.getDeferredValue().getType() != null) {
734 out.print("attr.getDeferredValue().setType(\"");
735 out.printJavaString(attr.getDeferredValue().getType());
736 out.println("\");");
737 }
738 }
739
740 if (attr.getDeferredMethod() != null) {
741 out.println("attr.setDeferredMethod(new com.caucho.jsp.cfg.TldAttribute.DeferredMethod());");
742
743 Signature sig = attr.getDeferredMethod().getMethodSignature();
744
745 if (sig != null) {
746 out.print("attr.getDeferredMethod().setMethodSignature(");
747 out.print("new com.caucho.config.types.Signature(\"");
748 out.printJavaString(sig.getSignature());
749 out.println("\"));");
750 }
751 }
752
753 out.println("tag.addAttribute(attr);");
754 }
755
756 out.println("com.caucho.jsp.cfg.TldVariable var;");
757 for (int i = 0; i < _variables.size(); i++) {
758 TldVariable var = _variables.get(i);
759
760 out.println("var = new com.caucho.jsp.cfg.TldVariable();");
761
762 if (var.getNameGiven() != null)
763 out.println("var.setNameGiven(\"" + var.getNameGiven() + "\");");
764
765 if (var.getNameFromAttribute() != null)
766 out.println("var.setNameFromAttribute(\"" + var.getNameFromAttribute() + "\");");
767
768 String type = var.getVariableClass();
769 if (type != null)
770 out.println("var.setVariableClass(\"" + type + "\");");
771 out.println("var.setDeclare(" + var.getDeclare() + ");");
772 if (var.getScope() != null)
773 out.println("var.setScope(\"" + var.getScope() + "\");");
774
775 out.println("tag.addVariable(var);");
776 }
777
778 String bodyContent = _bodyContent;
779 if (bodyContent == null)
780 bodyContent = "scriptless";
781
782 out.println("return new com.caucho.jsp.java.TagInfoExt(tag.getName(),");
783 out.println(" getClass().getName(),");
784 out.println(" \"" + bodyContent + "\",");
785 out.print(" \"");
786 if (_description != null)
787 out.printJavaString(_description);
788 else
789 out.printJavaString("A simple tag");
790 out.println("\",");
791 out.println(" taglib,");
792 out.println(" null,");
793 out.println(" tag.getAttributes(),");
794
795 if (_displayName != null) {
796 out.print(" \"");
797 out.printJavaString(_displayName);
798 out.println("\",");
799 }
800 else {
801 out.println(" null,");
802 }
803
804 if (_smallIcon != null) {
805 out.print(" \"");
806 out.printJavaString(_smallIcon);
807 out.println("\",");
808 }
809 else {
810 out.println(" null,");
811 }
812
813 if (_largeIcon != null) {
814 out.print(" \"");
815 out.printJavaString(_largeIcon);
816 out.println("\",");
817 }
818 else {
819 out.println(" null,");
820 }
821
822 out.println(" tag.getVariables(),");
823 out.println(" " + (_dynamicAttributes != null) + ",");
824 if (_dynamicAttributes != null)
825 out.println(" \"" + _dynamicAttributes + "\",");
826 else
827 out.println(" null,");
828 out.println(" _caucho_depends);");
829
830 out.popDepth();
831 out.println("}");
832
833 out.println();
834 out.println("public String _caucho_getDynamicAttributes()");
835 out.println("{");
836 out.pushDepth();
837
838 if (_dynamicAttributes != null)
839 out.println("return \"" + _dynamicAttributes + "\";");
840 else
841 out.println("return null;");
842
843 out.popDepth();
844 out.println("}");
845
846 generateTagLibrary(out);
847 }
848
849
854 protected void generateTagLibrary(JspJavaWriter out)
855 throws IOException , JspParseException
856 {
857 out.println();
858 out.println("private javax.servlet.jsp.tagext.TagLibraryInfo _caucho_getTagLibrary()");
859 out.println(" throws com.caucho.config.ConfigException");
860 out.println("{");
861 out.pushDepth();
862
863 out.println("return new com.caucho.jsp.java.TagTaglib(\"x\", \"http://test.com\");");
864 out.popDepth();
865 out.println("}");
866 }
867
868 private String toFieldName(String name)
869 {
870 if (hasScripting() && ! _reserved.contains(name))
871 return name;
872 else
873 return "_" + name;
874 }
875
876 static {
877 _reserved.add("public");
878 _reserved.add("private");
879 _reserved.add("protected");
880 _reserved.add("static");
881 _reserved.add("final");
882 _reserved.add("class");
883 _reserved.add("interface");
884 _reserved.add("extends");
885 _reserved.add("implements");
886 _reserved.add("package");
887 _reserved.add("import");
888 _reserved.add("new");
889 _reserved.add("if");
890 _reserved.add("else");
891 _reserved.add("for");
892 _reserved.add("do");
893 _reserved.add("while");
894 _reserved.add("break");
895 _reserved.add("continue");
896 _reserved.add("switch");
897 _reserved.add("case");
898 _reserved.add("default");
899 _reserved.add("throw");
900 _reserved.add("enum");
901 _reserved.add("throws");
902
903 _reserved.add("void");
904 _reserved.add("boolean");
905 _reserved.add("byte");
906 _reserved.add("char");
907 _reserved.add("short");
908 _reserved.add("int");
909 _reserved.add("long");
910 _reserved.add("float");
911 _reserved.add("double");
912 }
913 }
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