2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, version 2 of the License.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. Look for COPYING file in the top folder.
16 * If not, see http://opensource.org/licenses/GPL-2.0.
18 package org.apidesign.bck2brwsr.htmlpage;
20 import java.io.IOException;
21 import java.io.InputStream;
22 import java.io.OutputStreamWriter;
23 import java.io.StringWriter;
24 import java.io.Writer;
25 import java.lang.annotation.AnnotationTypeMismatchException;
26 import java.lang.annotation.IncompleteAnnotationException;
27 import java.lang.reflect.Method;
28 import java.util.ArrayList;
29 import java.util.Collection;
30 import java.util.Collections;
31 import java.util.HashMap;
32 import java.util.HashSet;
33 import java.util.LinkedHashSet;
34 import java.util.List;
37 import java.util.WeakHashMap;
38 import javax.annotation.processing.AbstractProcessor;
39 import javax.annotation.processing.Completion;
40 import javax.annotation.processing.Completions;
41 import javax.annotation.processing.ProcessingEnvironment;
42 import javax.annotation.processing.Processor;
43 import javax.annotation.processing.RoundEnvironment;
44 import javax.annotation.processing.SupportedAnnotationTypes;
45 import javax.lang.model.element.AnnotationMirror;
46 import javax.lang.model.element.AnnotationValue;
47 import javax.lang.model.element.Element;
48 import javax.lang.model.element.ElementKind;
49 import javax.lang.model.element.ExecutableElement;
50 import javax.lang.model.element.Modifier;
51 import javax.lang.model.element.PackageElement;
52 import javax.lang.model.element.TypeElement;
53 import javax.lang.model.element.VariableElement;
54 import javax.lang.model.type.ArrayType;
55 import javax.lang.model.type.MirroredTypeException;
56 import javax.lang.model.type.TypeKind;
57 import javax.lang.model.type.TypeMirror;
58 import javax.lang.model.util.Elements;
59 import javax.lang.model.util.Types;
60 import javax.tools.Diagnostic;
61 import javax.tools.FileObject;
62 import javax.tools.StandardLocation;
63 import org.apidesign.bck2brwsr.core.ExtraJavaScript;
64 import org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty;
65 import org.apidesign.bck2brwsr.htmlpage.api.Model;
66 import org.apidesign.bck2brwsr.htmlpage.api.On;
67 import org.apidesign.bck2brwsr.htmlpage.api.OnFunction;
68 import org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange;
69 import org.apidesign.bck2brwsr.htmlpage.api.OnReceive;
70 import org.apidesign.bck2brwsr.htmlpage.api.Page;
71 import org.apidesign.bck2brwsr.htmlpage.api.Property;
72 import org.openide.util.lookup.ServiceProvider;
74 /** Annotation processor to process an XHTML page and generate appropriate
77 * @author Jaroslav Tulach <jtulach@netbeans.org>
79 @ExtraJavaScript(processByteCode = false, resource = "")
80 @ServiceProvider(service=Processor.class)
81 @SupportedAnnotationTypes({
82 "org.apidesign.bck2brwsr.htmlpage.api.Model",
83 "org.apidesign.bck2brwsr.htmlpage.api.Page",
84 "org.apidesign.bck2brwsr.htmlpage.api.OnFunction",
85 "org.apidesign.bck2brwsr.htmlpage.api.OnReceive",
86 "org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange",
87 "org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty",
88 "org.apidesign.bck2brwsr.htmlpage.api.On"
90 public final class PageProcessor extends AbstractProcessor {
91 private final Map<Element,String> models = new WeakHashMap<>();
92 private final Map<Element,Prprt[]> verify = new WeakHashMap<>();
94 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
96 for (Element e : roundEnv.getElementsAnnotatedWith(Model.class)) {
97 if (!processModel(e)) {
101 for (Element e : roundEnv.getElementsAnnotatedWith(Page.class)) {
102 if (!processPage(e)) {
106 if (roundEnv.processingOver()) {
108 for (Map.Entry<Element, Prprt[]> entry : verify.entrySet()) {
109 TypeElement te = (TypeElement)entry.getKey();
110 String fqn = processingEnv.getElementUtils().getBinaryName(te).toString();
111 Element finalElem = processingEnv.getElementUtils().getTypeElement(fqn);
112 if (finalElem == null) {
116 Model m = finalElem.getAnnotation(Model.class);
118 props = Prprt.wrap(processingEnv, finalElem, m.properties());
120 Page p = finalElem.getAnnotation(Page.class);
121 props = Prprt.wrap(processingEnv, finalElem, p.properties());
123 for (Prprt p : props) {
124 boolean[] isModel = { false };
125 boolean[] isEnum = { false };
126 boolean[] isPrimitive = { false };
127 String t = checkType(p, isModel, isEnum, isPrimitive);
131 if (isPrimitive[0]) {
137 if ("java.lang.String".equals(t)) {
140 error("The type " + t + " should be defined by @Model annotation", entry.getKey());
148 private InputStream openStream(String pkg, String name) throws IOException {
150 FileObject fo = processingEnv.getFiler().getResource(
151 StandardLocation.SOURCE_PATH, pkg, name);
152 return fo.openInputStream();
153 } catch (IOException ex) {
154 return processingEnv.getFiler().getResource(StandardLocation.CLASS_OUTPUT, pkg, name).openInputStream();
158 private void error(String msg, Element e) {
159 processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, msg, e);
162 private boolean processModel(Element e) {
164 Model m = e.getAnnotation(Model.class);
168 String pkg = findPkgName(e);
170 String className = m.className();
171 models.put(e, className);
173 StringWriter body = new StringWriter();
174 List<String> propsGetSet = new ArrayList<>();
175 List<String> functions = new ArrayList<>();
176 Map<String, Collection<String>> propsDeps = new HashMap<>();
177 Map<String, Collection<String>> functionDeps = new HashMap<>();
178 Prprt[] props = createProps(e, m.properties());
180 if (!generateComputedProperties(body, props, e.getEnclosedElements(), propsGetSet, propsDeps)) {
183 if (!generateOnChange(e, propsDeps, props, className, functionDeps)) {
186 if (!generateProperties(e, body, props, propsGetSet, propsDeps, functionDeps)) {
189 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
192 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
193 w = new OutputStreamWriter(java.openOutputStream());
195 w.append("package " + pkg + ";\n");
196 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
197 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
198 w.append("import org.apidesign.bck2brwsr.core.Exported;\n");
199 w.append("import org.apidesign.bck2brwsr.core.JavaScriptOnly;\n");
200 w.append("final class ").append(className).append(" implements Cloneable {\n");
201 w.append(" private boolean locked;\n");
202 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
203 w.append(body.toString());
204 w.append(" private static Class<" + inPckName(e) + "> modelFor() { return null; }\n");
205 w.append(" public ").append(className).append("() {\n");
206 w.append(" intKnckt();\n");
208 w.append(" private void intKnckt() {\n");
209 w.append(" ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(this, ");
210 writeStringArray(propsGetSet, w);
212 writeStringArray(functions, w);
215 w.append(" ").append(className).append("(Object json) {\n");
217 for (int i = 0; i < propsGetSet.size(); i += 4) {
218 Prprt p = findPrprt(props, propsGetSet.get(i));
224 w.append(" Object[] ret = new Object[" + values + "];\n");
225 w.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.extractJSON(json, new String[] {\n");
226 for (int i = 0; i < propsGetSet.size(); i += 4) {
227 Prprt p = findPrprt(props, propsGetSet.get(i));
231 w.append(" \"").append(propsGetSet.get(i)).append("\",\n");
233 w.append(" }, ret);\n");
234 for (int i = 0, cnt = 0, prop = 0; i < propsGetSet.size(); i += 4) {
235 final String pn = propsGetSet.get(i);
236 Prprt p = findPrprt(props, pn);
240 boolean[] isModel = { false };
241 boolean[] isEnum = { false };
242 boolean isPrimitive[] = { false };
243 String type = checkType(props[prop++], isModel, isEnum, isPrimitive);
245 w.append("if (ret[" + cnt + "] instanceof Object[]) {\n");
246 w.append(" for (Object e : ((Object[])ret[" + cnt + "])) {\n");
248 w.append(" this.prop_").append(pn).append(".add(new ");
249 w.append(type).append("(e));\n");
250 } else if (isEnum[0]) {
251 w.append(" this.prop_").append(pn);
252 w.append(".add(e == null ? null : ");
253 w.append(type).append(".valueOf((String)e));\n");
255 if (isPrimitive(type)) {
256 w.append(" this.prop_").append(pn).append(".add(((Number)e).");
257 w.append(type).append("Value());\n");
259 w.append(" this.prop_").append(pn).append(".add((");
260 w.append(type).append(")e);\n");
267 w.append(" this.prop_").append(pn);
268 w.append(" = ret[" + cnt + "] == null ? null : ");
269 w.append(type).append(".valueOf((String)ret[" + cnt + "]);\n");
270 } else if (isPrimitive(type)) {
271 w.append(" this.prop_").append(pn);
272 w.append(" = ((Number)").append("ret[" + cnt + "]).");
273 w.append(type).append("Value();\n");
275 w.append(" this.prop_").append(pn);
276 w.append(" = (").append(type).append(')');
277 w.append("ret[" + cnt + "];\n");
282 w.append(" intKnckt();\n");
284 writeToString(props, w);
285 writeClone(className, props, w);
290 } catch (IOException ex) {
291 error("Can't create " + className + ".java", e);
297 private boolean processPage(Element e) {
299 Page p = e.getAnnotation(Page.class);
303 String pkg = findPkgName(e);
306 try (InputStream is = openStream(pkg, p.xhtml())) {
307 pp = ProcessPage.readPage(is);
309 } catch (IOException iOException) {
310 error("Can't read " + p.xhtml() + " as " + iOException.getMessage(), e);
315 String className = p.className();
316 if (className.isEmpty()) {
317 int indx = p.xhtml().indexOf('.');
318 className = p.xhtml().substring(0, indx);
321 StringWriter body = new StringWriter();
322 List<String> propsGetSet = new ArrayList<>();
323 List<String> functions = new ArrayList<>();
324 Map<String, Collection<String>> propsDeps = new HashMap<>();
325 Map<String, Collection<String>> functionDeps = new HashMap<>();
327 Prprt[] props = createProps(e, p.properties());
328 if (!generateComputedProperties(body, props, e.getEnclosedElements(), propsGetSet, propsDeps)) {
331 if (!generateOnChange(e, propsDeps, props, className, functionDeps)) {
334 if (!generateProperties(e, body, props, propsGetSet, propsDeps, functionDeps)) {
337 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
340 if (!generateReceive(e, body, className, e.getEnclosedElements(), functions)) {
344 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
345 w = new OutputStreamWriter(java.openOutputStream());
347 w.append("package " + pkg + ";\n");
348 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
349 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
350 w.append("import org.apidesign.bck2brwsr.core.Exported;\n");
351 w.append("final class ").append(className).append(" {\n");
352 w.append(" private boolean locked;\n");
353 if (!initializeOnClick(className, (TypeElement) e, w, pp)) {
356 if (pp != null) for (String id : pp.ids()) {
357 String tag = pp.tagNameForId(id);
358 String type = type(tag);
359 w.append(" ").append("public final ").
360 append(type).append(' ').append(cnstnt(id)).append(" = new ").
361 append(type).append("(\"").append(id).append("\");\n");
364 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
365 w.append(body.toString());
366 if (!propsGetSet.isEmpty()) {
367 w.write("public " + className + " applyBindings() {\n");
368 w.write(" ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(");
369 w.write(className + ".class, this, ");
370 writeStringArray(propsGetSet, w);
372 writeStringArray(functions, w);
373 w.write(");\n return this;\n}\n");
375 w.write("public void triggerEvent(Element e, OnEvent ev) {\n");
376 w.write(" org.apidesign.bck2brwsr.htmlpage.Knockout.triggerEvent(e.getId(), ev.getElementPropertyName());\n");
383 } catch (IOException ex) {
384 error("Can't create " + className + ".java", e);
390 private static String type(String tag) {
391 if (tag.equals("title")) {
394 if (tag.equals("button")) {
397 if (tag.equals("input")) {
400 if (tag.equals("canvas")) {
403 if (tag.equals("img")) {
409 private static String cnstnt(String id) {
410 return id.replace('.', '_').replace('-', '_');
413 private boolean initializeOnClick(
414 String className, TypeElement type, Writer w, ProcessPage pp
415 ) throws IOException {
417 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
418 { //for (Element clazz : pe.getEnclosedElements()) {
419 // if (clazz.getKind() != ElementKind.CLASS) {
422 w.append(" public ").append(className).append("() {\n");
423 StringBuilder dispatch = new StringBuilder();
425 for (Element method : type.getEnclosedElements()) {
426 On oc = method.getAnnotation(On.class);
428 for (String id : oc.id()) {
430 error("id = " + id + " not found in HTML page.", method);
434 if (pp.tagNameForId(id) == null) {
435 error("id = " + id + " does not exist in the HTML page. Found only " + pp.ids(), method);
439 ExecutableElement ee = (ExecutableElement)method;
440 CharSequence params = wrapParams(ee, id, className, "ev", null);
441 if (!ee.getModifiers().contains(Modifier.STATIC)) {
442 error("@On method has to be static", ee);
446 if (ee.getModifiers().contains(Modifier.PRIVATE)) {
447 error("@On method can't be private", ee);
451 w.append(" OnEvent." + oc.event()).append(".of(").append(cnstnt(id)).
452 append(").perform(new OnDispatch(" + dispatchCnt + "));\n");
455 append(" case ").append(dispatchCnt).append(": ").
456 append(type.getSimpleName().toString()).
457 append('.').append(ee.getSimpleName()).append("(").
459 append("); break;\n");
466 if (dispatchCnt > 0) {
467 w.append("class OnDispatch implements OnHandler {\n");
468 w.append(" private final int dispatch;\n");
469 w.append(" OnDispatch(int d) { dispatch = d; }\n");
470 w.append(" public void onEvent(Object ev) {\n");
471 w.append(" switch (dispatch) {\n");
484 public Iterable<? extends Completion> getCompletions(
485 Element element, AnnotationMirror annotation,
486 ExecutableElement member, String userText
488 if (!userText.startsWith("\"")) {
489 return Collections.emptyList();
492 Element cls = findClass(element);
493 Page p = cls.getAnnotation(Page.class);
494 String pkg = findPkgName(cls);
497 InputStream is = openStream(pkg, p.xhtml());
498 pp = ProcessPage.readPage(is);
500 } catch (IOException iOException) {
501 return Collections.emptyList();
504 List<Completion> cc = new ArrayList<>();
505 userText = userText.substring(1);
506 for (String id : pp.ids()) {
507 if (id.startsWith(userText)) {
508 cc.add(Completions.of("\"" + id + "\"", id));
514 private static Element findClass(Element e) {
518 Page p = e.getAnnotation(Page.class);
522 return e.getEnclosingElement();
525 private boolean generateProperties(
527 Writer w, Prprt[] properties,
528 Collection<String> props,
529 Map<String,Collection<String>> deps,
530 Map<String,Collection<String>> functionDeps
531 ) throws IOException {
533 for (Prprt p : properties) {
535 tn = typeName(where, p);
536 String[] gs = toGetSet(p.name(), tn, p.array());
539 w.write("private KOList<" + tn + "> prop_" + p.name() + " = new KOList<" + tn + ">(\""
541 Collection<String> dependants = deps.get(p.name());
542 if (dependants != null) {
543 for (String depProp : dependants) {
552 dependants = functionDeps.get(p.name());
553 if (dependants != null) {
554 w.write(".onChange(new Runnable() { public void run() {\n");
555 for (String call : dependants) {
562 w.write("@Exported\n");
563 w.write("public java.util.List<" + tn + "> " + gs[0] + "() {\n");
564 w.write(" if (locked) throw new IllegalStateException();\n");
565 w.write(" prop_" + p.name() + ".assign(ko);\n");
566 w.write(" return prop_" + p.name() + ";\n");
569 w.write("private " + tn + " prop_" + p.name() + ";\n");
570 w.write("@Exported\n");
571 w.write("public " + tn + " " + gs[0] + "() {\n");
572 w.write(" if (locked) throw new IllegalStateException();\n");
573 w.write(" return prop_" + p.name() + ";\n");
575 w.write("@Exported\n");
576 w.write("public void " + gs[1] + "(" + tn + " v) {\n");
577 w.write(" if (locked) throw new IllegalStateException();\n");
578 w.write(" prop_" + p.name() + " = v;\n");
579 w.write(" if (ko != null) {\n");
580 w.write(" ko.valueHasMutated(\"" + p.name() + "\");\n");
581 Collection<String> dependants = deps.get(p.name());
582 if (dependants != null) {
583 for (String depProp : dependants) {
584 w.write(" ko.valueHasMutated(\"" + depProp + "\");\n");
588 dependants = functionDeps.get(p.name());
589 if (dependants != null) {
590 for (String call : dependants) {
605 private boolean generateComputedProperties(
606 Writer w, Prprt[] fixedProps,
607 Collection<? extends Element> arr, Collection<String> props,
608 Map<String,Collection<String>> deps
609 ) throws IOException {
611 for (Element e : arr) {
612 if (e.getKind() != ElementKind.METHOD) {
615 if (e.getAnnotation(ComputedProperty.class) == null) {
618 ExecutableElement ee = (ExecutableElement)e;
619 final TypeMirror rt = ee.getReturnType();
620 final Types tu = processingEnv.getTypeUtils();
621 TypeMirror ert = tu.erasure(rt);
622 String tn = fqn(ert, ee);
623 boolean array = false;
624 if (tn.equals("java.util.List")) {
628 final String sn = ee.getSimpleName().toString();
629 String[] gs = toGetSet(sn, tn, array);
631 w.write("@Exported\n");
632 w.write("public " + tn + " " + gs[0] + "() {\n");
633 w.write(" if (locked) throw new IllegalStateException();\n");
635 for (VariableElement pe : ee.getParameters()) {
636 final String dn = pe.getSimpleName().toString();
638 if (!verifyPropName(pe, dn, fixedProps)) {
642 final String dt = fqn(pe.asType(), ee);
643 String[] call = toGetSet(dn, dt, false);
644 w.write(" " + dt + " arg" + (++arg) + " = ");
645 w.write(call[0] + "();\n");
647 Collection<String> depends = deps.get(dn);
648 if (depends == null) {
649 depends = new LinkedHashSet<>();
650 deps.put(dn, depends);
655 w.write(" locked = true;\n");
656 w.write(" return " + fqn(ee.getEnclosingElement().asType(), ee) + '.' + e.getSimpleName() + "(");
658 for (int i = 1; i <= arg; i++) {
664 w.write(" } finally {\n");
665 w.write(" locked = false;\n");
669 props.add(e.getSimpleName().toString());
678 private static String[] toGetSet(String name, String type, boolean array) {
679 String n = Character.toUpperCase(name.charAt(0)) + name.substring(1);
680 String bck2brwsrType = "L" + type.replace('.', '_') + "_2";
681 if ("int".equals(type)) {
684 if ("double".equals(type)) {
688 if ("boolean".equals(type)) {
692 final String nu = n.replace('.', '_');
694 return new String[] {
697 "get" + nu + "__Ljava_util_List_2",
704 pref + nu + "__" + bck2brwsrType,
705 "set" + nu + "__V" + bck2brwsrType
709 private String typeName(Element where, Prprt p) {
711 boolean[] isModel = { false };
712 boolean[] isEnum = { false };
713 boolean isPrimitive[] = { false };
714 ret = checkType(p, isModel, isEnum, isPrimitive);
716 String bt = findBoxedType(ret);
724 private static String findBoxedType(String ret) {
725 if (ret.equals("boolean")) {
726 return Boolean.class.getName();
728 if (ret.equals("byte")) {
729 return Byte.class.getName();
731 if (ret.equals("short")) {
732 return Short.class.getName();
734 if (ret.equals("char")) {
735 return Character.class.getName();
737 if (ret.equals("int")) {
738 return Integer.class.getName();
740 if (ret.equals("long")) {
741 return Long.class.getName();
743 if (ret.equals("float")) {
744 return Float.class.getName();
746 if (ret.equals("double")) {
747 return Double.class.getName();
752 private boolean verifyPropName(Element e, String propName, Prprt[] existingProps) {
753 StringBuilder sb = new StringBuilder();
755 for (Prprt Prprt : existingProps) {
756 if (Prprt.name().equals(propName)) {
761 sb.append(Prprt.name());
766 propName + " is not one of known properties: " + sb
772 private static String findPkgName(Element e) {
774 if (e.getKind() == ElementKind.PACKAGE) {
775 return ((PackageElement)e).getQualifiedName().toString();
777 e = e.getEnclosingElement();
781 private boolean generateFunctions(
782 Element clazz, StringWriter body, String className,
783 List<? extends Element> enclosedElements, List<String> functions
785 for (Element m : enclosedElements) {
786 if (m.getKind() != ElementKind.METHOD) {
789 ExecutableElement e = (ExecutableElement)m;
790 OnFunction onF = e.getAnnotation(OnFunction.class);
794 if (!e.getModifiers().contains(Modifier.STATIC)) {
795 error("@OnFunction method needs to be static", e);
798 if (e.getModifiers().contains(Modifier.PRIVATE)) {
799 error("@OnFunction method cannot be private", e);
802 if (e.getReturnType().getKind() != TypeKind.VOID) {
803 error("@OnFunction method should return void", e);
806 String n = e.getSimpleName().toString();
807 body.append("@Exported\n");
808 body.append("private void ").append(n).append("(Object data, Object ev) {\n");
809 body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
810 body.append(wrapParams(e, null, className, "ev", "data"));
815 functions.add(n + "__VLjava_lang_Object_2Ljava_lang_Object_2");
820 private boolean generateOnChange(Element clazz, Map<String,Collection<String>> propDeps,
821 Prprt[] properties, String className,
822 Map<String, Collection<String>> functionDeps
824 for (Element m : clazz.getEnclosedElements()) {
825 if (m.getKind() != ElementKind.METHOD) {
828 ExecutableElement e = (ExecutableElement) m;
829 OnPropertyChange onPC = e.getAnnotation(OnPropertyChange.class);
833 for (String pn : onPC.value()) {
834 if (findPrprt(properties, pn) == null && findDerivedFrom(propDeps, pn).isEmpty()) {
835 error("No Prprt named '" + pn + "' in the model", clazz);
839 if (!e.getModifiers().contains(Modifier.STATIC)) {
840 error("@OnPrprtChange method needs to be static", e);
843 if (e.getModifiers().contains(Modifier.PRIVATE)) {
844 error("@OnPrprtChange method cannot be private", e);
847 if (e.getReturnType().getKind() != TypeKind.VOID) {
848 error("@OnPrprtChange method should return void", e);
851 String n = e.getSimpleName().toString();
854 for (String pn : onPC.value()) {
855 StringBuilder call = new StringBuilder();
856 call.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
857 call.append(wrapPropName(e, className, "name", pn));
860 Collection<String> change = functionDeps.get(pn);
861 if (change == null) {
862 change = new ArrayList<>();
863 functionDeps.put(pn, change);
865 change.add(call.toString());
866 for (String dpn : findDerivedFrom(propDeps, pn)) {
867 change = functionDeps.get(dpn);
868 if (change == null) {
869 change = new ArrayList<>();
870 functionDeps.put(dpn, change);
872 change.add(call.toString());
879 private boolean generateReceive(
880 Element clazz, StringWriter body, String className,
881 List<? extends Element> enclosedElements, List<String> functions
883 for (Element m : enclosedElements) {
884 if (m.getKind() != ElementKind.METHOD) {
887 ExecutableElement e = (ExecutableElement)m;
888 OnReceive onR = e.getAnnotation(OnReceive.class);
892 if (!e.getModifiers().contains(Modifier.STATIC)) {
893 error("@OnReceive method needs to be static", e);
896 if (e.getModifiers().contains(Modifier.PRIVATE)) {
897 error("@OnReceive method cannot be private", e);
900 if (e.getReturnType().getKind() != TypeKind.VOID) {
901 error("@OnReceive method should return void", e);
904 String modelClass = null;
905 boolean expectsList = false;
906 List<String> args = new ArrayList<>();
908 for (VariableElement ve : e.getParameters()) {
909 TypeMirror modelType = null;
910 if (ve.asType().toString().equals(className)) {
911 args.add(className + ".this");
912 } else if (isModel(ve.asType())) {
913 modelType = ve.asType();
914 } else if (ve.asType().getKind() == TypeKind.ARRAY) {
915 modelType = ((ArrayType)ve.asType()).getComponentType();
918 if (modelType != null) {
919 if (modelClass != null) {
920 error("There can be only one model class among arguments", e);
922 modelClass = modelType.toString();
932 if (modelClass == null) {
933 error("The method needs to have one @Model class as parameter", e);
935 String n = e.getSimpleName().toString();
936 body.append("public void ").append(n).append("(");
937 StringBuilder assembleURL = new StringBuilder();
938 String jsonpVarName = null;
941 boolean skipJSONP = onR.jsonp().isEmpty();
942 for (String p : findParamNames(e, onR.url(), assembleURL)) {
943 if (!skipJSONP && p.equals(onR.jsonp())) {
949 body.append("String ").append(p);
954 "Name of jsonp attribute ('" + onR.jsonp() +
955 "') is not used in url attribute '" + onR.url() + "'", e
959 body.append(") {\n");
960 body.append(" final Object[] result = { null };\n");
962 " class ProcessResult implements Runnable {\n" +
964 " public void run() {\n" +
965 " Object value = result[0];\n");
967 " " + modelClass + "[] arr;\n");
969 " if (value instanceof Object[]) {\n" +
970 " Object[] data = ((Object[])value);\n" +
971 " arr = new " + modelClass + "[data.length];\n" +
972 " for (int i = 0; i < data.length; i++) {\n" +
973 " arr[i] = new " + modelClass + "(data[i]);\n" +
976 " arr = new " + modelClass + "[1];\n" +
977 " arr[0] = new " + modelClass + "(value);\n" +
981 body.append(clazz.getSimpleName()).append(".").append(n).append("(");
983 for (String arg : args) {
994 body.append(" ProcessResult pr = new ProcessResult();\n");
995 if (jsonpVarName != null) {
996 body.append(" String ").append(jsonpVarName).
997 append(" = org.apidesign.bck2brwsr.htmlpage.ConvertTypes.createJSONP(result, pr);\n");
999 body.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.loadJSON(\n ");
1000 body.append(assembleURL);
1001 body.append(", result, pr, ").append(jsonpVarName).append("\n );\n");
1002 // body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
1003 // body.append(wrapParams(e, null, className, "ev", "data"));
1004 // body.append(");\n");
1010 private CharSequence wrapParams(
1011 ExecutableElement ee, String id, String className, String evName, String dataName
1013 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
1014 StringBuilder params = new StringBuilder();
1015 boolean first = true;
1016 for (VariableElement ve : ee.getParameters()) {
1018 params.append(", ");
1021 String toCall = null;
1022 if (ve.asType() == stringType) {
1023 if (ve.getSimpleName().contentEquals("id")) {
1024 params.append('"').append(id).append('"');
1027 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toString(";
1029 if (ve.asType().getKind() == TypeKind.DOUBLE) {
1030 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toDouble(";
1032 if (ve.asType().getKind() == TypeKind.INT) {
1033 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toInt(";
1035 if (dataName != null && ve.getSimpleName().contentEquals(dataName) && isModel(ve.asType())) {
1036 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toModel(" + ve.asType() + ".class, ";
1039 if (toCall != null) {
1040 params.append(toCall);
1041 if (dataName != null && ve.getSimpleName().contentEquals(dataName)) {
1042 params.append(dataName);
1043 params.append(", null");
1045 if (evName == null) {
1046 final StringBuilder sb = new StringBuilder();
1047 sb.append("Unexpected string parameter name.");
1048 if (dataName != null) {
1049 sb.append(" Try \"").append(dataName).append("\"");
1051 error(sb.toString(), ee);
1053 params.append(evName);
1054 params.append(", \"");
1055 params.append(ve.getSimpleName().toString());
1056 params.append("\"");
1061 String rn = fqn(ve.asType(), ee);
1062 int last = rn.lastIndexOf('.');
1064 rn = rn.substring(last + 1);
1066 if (rn.equals(className)) {
1067 params.append(className).append(".this");
1071 "@On method can only accept String named 'id' or " + className + " arguments",
1079 private CharSequence wrapPropName(
1080 ExecutableElement ee, String className, String propName, String propValue
1082 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
1083 StringBuilder params = new StringBuilder();
1084 boolean first = true;
1085 for (VariableElement ve : ee.getParameters()) {
1087 params.append(", ");
1090 if (ve.asType() == stringType) {
1091 if (propName != null && ve.getSimpleName().contentEquals(propName)) {
1092 params.append('"').append(propValue).append('"');
1094 error("Unexpected string parameter name. Try \"" + propName + "\".", ee);
1098 String rn = fqn(ve.asType(), ee);
1099 int last = rn.lastIndexOf('.');
1101 rn = rn.substring(last + 1);
1103 if (rn.equals(className)) {
1104 params.append(className).append(".this");
1108 "@OnPrprtChange method can only accept String or " + className + " arguments",
1114 private boolean isModel(TypeMirror tm) {
1115 final Element e = processingEnv.getTypeUtils().asElement(tm);
1119 for (Element ch : e.getEnclosedElements()) {
1120 if (ch.getKind() == ElementKind.METHOD) {
1121 ExecutableElement ee = (ExecutableElement)ch;
1122 if (ee.getParameters().isEmpty() && ee.getSimpleName().contentEquals("modelFor")) {
1127 return models.values().contains(e.getSimpleName().toString());
1130 private void writeStringArray(List<String> strings, Writer w) throws IOException {
1131 w.write("new String[] {\n");
1133 for (String n : strings) {
1138 w.write(" \"" + n + "\"");
1145 private void writeToString(Prprt[] props, Writer w) throws IOException {
1146 w.write(" public String toString() {\n");
1147 w.write(" StringBuilder sb = new StringBuilder();\n");
1148 w.write(" sb.append('{');\n");
1150 for (Prprt p : props) {
1152 w.append(" sb.append('\"').append(\"" + p.name() + "\")");
1153 w.append(".append('\"').append(\":\");\n");
1154 w.append(" sb.append(org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toJSON(prop_");
1155 w.append(p.name()).append("));\n");
1156 sep = " sb.append(',');\n";
1158 w.write(" sb.append('}');\n");
1159 w.write(" return sb.toString();\n");
1162 private void writeClone(String className, Prprt[] props, Writer w) throws IOException {
1163 w.write(" public " + className + " clone() {\n");
1164 w.write(" " + className + " ret = new " + className + "();\n");
1165 for (Prprt p : props) {
1167 boolean isModel[] = { false };
1168 boolean isEnum[] = { false };
1169 boolean isPrimitive[] = { false };
1170 checkType(p, isModel, isEnum, isPrimitive);
1172 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ";\n");
1175 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ".clone();\n");
1177 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ".clone();\n");
1181 w.write(" return ret;\n");
1185 private String inPckName(Element e) {
1186 StringBuilder sb = new StringBuilder();
1187 while (e.getKind() != ElementKind.PACKAGE) {
1188 if (sb.length() == 0) {
1189 sb.append(e.getSimpleName());
1192 sb.insert(0, e.getSimpleName());
1194 e = e.getEnclosingElement();
1196 return sb.toString();
1199 private String fqn(TypeMirror pt, Element relative) {
1200 if (pt.getKind() == TypeKind.ERROR) {
1201 final Elements eu = processingEnv.getElementUtils();
1202 PackageElement pckg = eu.getPackageOf(relative);
1203 return pckg.getQualifiedName() + "." + pt.toString();
1205 return pt.toString();
1208 private String checkType(Prprt p, boolean[] isModel, boolean[] isEnum, boolean[] isPrimitive) {
1211 String ret = p.typeName(processingEnv);
1212 TypeElement e = processingEnv.getElementUtils().getTypeElement(ret);
1216 isPrimitive[0] = false;
1220 } catch (MirroredTypeException ex) {
1221 tm = ex.getTypeMirror();
1223 tm = processingEnv.getTypeUtils().erasure(tm);
1224 isPrimitive[0] = tm.getKind().isPrimitive();
1225 final Element e = processingEnv.getTypeUtils().asElement(tm);
1226 final Model m = e == null ? null : e.getAnnotation(Model.class);
1230 ret = findPkgName(e) + '.' + m.className();
1232 models.put(e, m.className());
1233 } else if (findModelForMthd(e)) {
1234 ret = ((TypeElement)e).getQualifiedName().toString();
1237 ret = tm.toString();
1238 int idx = ret.indexOf("<any?>.");
1240 ret = ret.substring(idx + 7);
1245 TypeMirror enm = processingEnv.getElementUtils().getTypeElement("java.lang.Enum").asType();
1246 enm = processingEnv.getTypeUtils().erasure(enm);
1247 isEnum[0] = processingEnv.getTypeUtils().isSubtype(tm, enm);
1251 private static boolean findModelForMthd(Element clazz) {
1252 if (clazz == null) {
1255 for (Element e : clazz.getEnclosedElements()) {
1256 if (e.getKind() == ElementKind.METHOD) {
1257 ExecutableElement ee = (ExecutableElement)e;
1259 ee.getSimpleName().contentEquals("modelFor") &&
1260 ee.getParameters().isEmpty()
1269 private Iterable<String> findParamNames(Element e, String url, StringBuilder assembleURL) {
1270 List<String> params = new ArrayList<>();
1272 for (int pos = 0; ;) {
1273 int next = url.indexOf('{', pos);
1275 assembleURL.append('"')
1276 .append(url.substring(pos))
1280 int close = url.indexOf('}', next);
1282 error("Unbalanced '{' and '}' in " + url, e);
1285 final String paramName = url.substring(next + 1, close);
1286 params.add(paramName);
1287 assembleURL.append('"')
1288 .append(url.substring(pos, next))
1289 .append("\" + ").append(paramName).append(" + ");
1294 private static Prprt findPrprt(Prprt[] properties, String propName) {
1295 for (Prprt p : properties) {
1296 if (propName.equals(p.name())) {
1303 private boolean isPrimitive(String type) {
1305 "int".equals(type) ||
1306 "double".equals(type) ||
1307 "long".equals(type) ||
1308 "short".equals(type) ||
1309 "byte".equals(type) ||
1310 "float".equals(type);
1313 private static Collection<String> findDerivedFrom(Map<String, Collection<String>> propsDeps, String derivedProp) {
1314 Set<String> names = new HashSet<>();
1315 for (Map.Entry<String, Collection<String>> e : propsDeps.entrySet()) {
1316 if (e.getValue().contains(derivedProp)) {
1317 names.add(e.getKey());
1323 private Prprt[] createProps(Element e, Property[] arr) {
1324 Prprt[] ret = Prprt.wrap(processingEnv, e, arr);
1325 Prprt[] prev = verify.put(e, ret);
1327 error("Two sets of properties for ", e);
1332 @ExtraJavaScript(processByteCode = false, resource = "")
1333 private static class Prprt {
1334 private final Element e;
1335 private final AnnotationMirror tm;
1336 private final Property p;
1338 public Prprt(Element e, AnnotationMirror tm, Property p) {
1352 String typeName(ProcessingEnvironment env) {
1354 return p.type().getName();
1355 } catch (IncompleteAnnotationException | AnnotationTypeMismatchException ex) {
1356 for (Object v : getAnnoValues(env)) {
1357 String s = v.toString().replace(" ", "");
1358 if (s.startsWith("type=") && s.endsWith(".class")) {
1359 return s.substring(5, s.length() - 6);
1367 static Prprt[] wrap(ProcessingEnvironment pe, Element e, Property[] arr) {
1368 if (arr.length == 0) {
1369 return new Prprt[0];
1372 if (e.getKind() != ElementKind.CLASS) {
1373 throw new IllegalStateException("" + e.getKind());
1375 TypeElement te = (TypeElement)e;
1376 List<? extends AnnotationValue> val = null;
1377 for (AnnotationMirror an : te.getAnnotationMirrors()) {
1378 for (Map.Entry<? extends ExecutableElement, ? extends AnnotationValue> entry : an.getElementValues().entrySet()) {
1379 if (entry.getKey().getSimpleName().contentEquals("properties")) {
1380 val = (List)entry.getValue().getValue();
1385 if (val == null || val.size() != arr.length) {
1386 pe.getMessager().printMessage(Diagnostic.Kind.ERROR, "" + val, e);
1387 return new Prprt[0];
1389 Prprt[] ret = new Prprt[arr.length];
1390 BIG: for (int i = 0; i < ret.length; i++) {
1391 AnnotationMirror am = (AnnotationMirror)val.get(i).getValue();
1392 ret[i] = new Prprt(e, am, arr[i]);
1398 private List<? extends Object> getAnnoValues(ProcessingEnvironment pe) {
1400 Class<?> trees = Class.forName("com.sun.tools.javac.api.JavacTrees");
1401 Method m = trees.getMethod("instance", ProcessingEnvironment.class);
1402 Object instance = m.invoke(null, pe);
1403 m = instance.getClass().getMethod("getPath", Element.class, AnnotationMirror.class);
1404 Object path = m.invoke(instance, e, tm);
1405 m = path.getClass().getMethod("getLeaf");
1406 Object leaf = m.invoke(path);
1407 m = leaf.getClass().getMethod("getArguments");
1408 return (List)m.invoke(leaf);
1409 } catch (Exception ex) {
1410 return Collections.emptyList();