2 * Back 2 Browser Bytecode Translator
3 * Copyright (C) 2012 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.htmlpage.api.ComputedProperty;
64 import org.apidesign.bck2brwsr.htmlpage.api.Model;
65 import org.apidesign.bck2brwsr.htmlpage.api.On;
66 import org.apidesign.bck2brwsr.htmlpage.api.OnFunction;
67 import org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange;
68 import org.apidesign.bck2brwsr.htmlpage.api.OnReceive;
69 import org.apidesign.bck2brwsr.htmlpage.api.Page;
70 import org.apidesign.bck2brwsr.htmlpage.api.Property;
71 import org.openide.util.lookup.ServiceProvider;
73 /** Annotation processor to process an XHTML page and generate appropriate
76 * @author Jaroslav Tulach <jtulach@netbeans.org>
78 @ServiceProvider(service=Processor.class)
79 @SupportedAnnotationTypes({
80 "org.apidesign.bck2brwsr.htmlpage.api.Model",
81 "org.apidesign.bck2brwsr.htmlpage.api.Page",
82 "org.apidesign.bck2brwsr.htmlpage.api.OnFunction",
83 "org.apidesign.bck2brwsr.htmlpage.api.OnReceive",
84 "org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange",
85 "org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty",
86 "org.apidesign.bck2brwsr.htmlpage.api.On"
88 public final class PageProcessor extends AbstractProcessor {
89 private final Map<Element,String> models = new WeakHashMap<>();
90 private final Map<Element,Prprt[]> verify = new WeakHashMap<>();
92 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
94 for (Element e : roundEnv.getElementsAnnotatedWith(Model.class)) {
95 if (!processModel(e)) {
99 for (Element e : roundEnv.getElementsAnnotatedWith(Page.class)) {
100 if (!processPage(e)) {
104 if (roundEnv.processingOver()) {
106 for (Map.Entry<Element, Prprt[]> entry : verify.entrySet()) {
107 TypeElement te = (TypeElement)entry.getKey();
108 String fqn = processingEnv.getElementUtils().getBinaryName(te).toString();
109 Element finalElem = processingEnv.getElementUtils().getTypeElement(fqn);
110 if (finalElem == null) {
114 Model m = finalElem.getAnnotation(Model.class);
116 props = Prprt.wrap(processingEnv, finalElem, m.properties());
118 Page p = finalElem.getAnnotation(Page.class);
119 props = Prprt.wrap(processingEnv, finalElem, p.properties());
121 for (Prprt p : props) {
122 boolean[] isModel = { false };
123 boolean[] isEnum = { false };
124 boolean[] isPrimitive = { false };
125 String t = checkType(p, isModel, isEnum, isPrimitive);
129 if (isPrimitive[0]) {
135 if ("java.lang.String".equals(t)) {
138 error("The type " + t + " should be defined by @Model annotation", entry.getKey());
146 private InputStream openStream(String pkg, String name) throws IOException {
148 FileObject fo = processingEnv.getFiler().getResource(
149 StandardLocation.SOURCE_PATH, pkg, name);
150 return fo.openInputStream();
151 } catch (IOException ex) {
152 return processingEnv.getFiler().getResource(StandardLocation.CLASS_OUTPUT, pkg, name).openInputStream();
156 private void error(String msg, Element e) {
157 processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, msg, e);
160 private boolean processModel(Element e) {
162 Model m = e.getAnnotation(Model.class);
166 String pkg = findPkgName(e);
168 String className = m.className();
169 models.put(e, className);
171 StringWriter body = new StringWriter();
172 List<String> propsGetSet = new ArrayList<>();
173 List<String> functions = new ArrayList<>();
174 Map<String, Collection<String>> propsDeps = new HashMap<>();
175 Map<String, Collection<String>> functionDeps = new HashMap<>();
176 Prprt[] props = createProps(e, m.properties());
178 if (!generateComputedProperties(body, props, e.getEnclosedElements(), propsGetSet, propsDeps)) {
181 if (!generateOnChange(e, propsDeps, props, className, functionDeps)) {
184 if (!generateProperties(e, body, props, propsGetSet, propsDeps, functionDeps)) {
187 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
190 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
191 w = new OutputStreamWriter(java.openOutputStream());
193 w.append("package " + pkg + ";\n");
194 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
195 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
196 w.append("import org.apidesign.bck2brwsr.core.JavaScriptOnly;\n");
197 w.append("public final class ").append(className).append(" implements Cloneable {\n");
198 w.append(" private boolean locked;\n");
199 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
200 w.append(body.toString());
201 w.append(" private static Class<" + inPckName(e) + "> modelFor() { return null; }\n");
202 w.append(" public ").append(className).append("() {\n");
204 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout intKnckt() {\n");
205 w.append(" if (ko != null) return ko;\n");
206 w.append(" return ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(this, ");
207 writeStringArray(propsGetSet, w);
209 writeStringArray(functions, w);
212 w.append(" ").append(className).append("(Object json) {\n");
214 for (int i = 0; i < propsGetSet.size(); i += 4) {
215 Prprt p = findPrprt(props, propsGetSet.get(i));
221 w.append(" Object[] ret = new Object[" + values + "];\n");
222 w.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.extractJSON(json, new String[] {\n");
223 for (int i = 0; i < propsGetSet.size(); i += 4) {
224 Prprt p = findPrprt(props, propsGetSet.get(i));
228 w.append(" \"").append(propsGetSet.get(i)).append("\",\n");
230 w.append(" }, ret);\n");
231 for (int i = 0, cnt = 0, prop = 0; i < propsGetSet.size(); i += 4) {
232 final String pn = propsGetSet.get(i);
233 Prprt p = findPrprt(props, pn);
237 boolean[] isModel = { false };
238 boolean[] isEnum = { false };
239 boolean isPrimitive[] = { false };
240 String type = checkType(props[prop++], isModel, isEnum, isPrimitive);
242 w.append("if (ret[" + cnt + "] instanceof Object[]) {\n");
243 w.append(" for (Object e : ((Object[])ret[" + cnt + "])) {\n");
245 w.append(" this.prop_").append(pn).append(".add(new ");
246 w.append(type).append("(e));\n");
247 } else if (isEnum[0]) {
248 w.append(" this.prop_").append(pn);
249 w.append(".add(e == null ? null : ");
250 w.append(type).append(".valueOf((String)e));\n");
252 if (isPrimitive(type)) {
253 w.append(" this.prop_").append(pn).append(".add(((Number)e).");
254 w.append(type).append("Value());\n");
256 w.append(" this.prop_").append(pn).append(".add((");
257 w.append(type).append(")e);\n");
264 w.append(" this.prop_").append(pn);
265 w.append(" = ret[" + cnt + "] == null ? null : ");
266 w.append(type).append(".valueOf((String)ret[" + cnt + "]);\n");
267 } else if (isPrimitive(type)) {
268 w.append(" this.prop_").append(pn);
269 w.append(" = ((Number)").append("ret[" + cnt + "]).");
270 w.append(type).append("Value();\n");
272 w.append(" this.prop_").append(pn);
273 w.append(" = (").append(type).append(')');
274 w.append("ret[" + cnt + "];\n");
280 writeToString(props, w);
281 writeClone(className, props, w);
282 w.append(" public Object koData() {\n");
283 w.append(" return intKnckt().koData();\n");
289 } catch (IOException ex) {
290 error("Can't create " + className + ".java", e);
296 private boolean processPage(Element e) {
298 Page p = e.getAnnotation(Page.class);
302 String pkg = findPkgName(e);
305 try (InputStream is = openStream(pkg, p.xhtml())) {
306 pp = ProcessPage.readPage(is);
308 } catch (IOException iOException) {
309 error("Can't read " + p.xhtml() + " as " + iOException.getMessage(), e);
314 String className = p.className();
315 if (className.isEmpty()) {
316 int indx = p.xhtml().indexOf('.');
317 className = p.xhtml().substring(0, indx);
320 StringWriter body = new StringWriter();
321 List<String> propsGetSet = new ArrayList<>();
322 List<String> functions = new ArrayList<>();
323 Map<String, Collection<String>> propsDeps = new HashMap<>();
324 Map<String, Collection<String>> functionDeps = new HashMap<>();
326 Prprt[] props = createProps(e, p.properties());
327 if (!generateComputedProperties(body, props, e.getEnclosedElements(), propsGetSet, propsDeps)) {
330 if (!generateOnChange(e, propsDeps, props, className, functionDeps)) {
333 if (!generateProperties(e, body, props, propsGetSet, propsDeps, functionDeps)) {
336 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
339 if (!generateReceive(e, body, className, e.getEnclosedElements(), functions)) {
343 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
344 w = new OutputStreamWriter(java.openOutputStream());
346 w.append("package " + pkg + ";\n");
347 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
348 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
349 w.append("final class ").append(className).append(" {\n");
350 w.append(" private boolean locked;\n");
351 if (!initializeOnClick(className, (TypeElement) e, w, pp)) {
354 if (pp != null) for (String id : pp.ids()) {
355 String tag = pp.tagNameForId(id);
356 String type = type(tag);
357 w.append(" ").append("public final ").
358 append(type).append(' ').append(cnstnt(id)).append(" = new ").
359 append(type).append("(\"").append(id).append("\");\n");
362 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
363 w.append(body.toString());
364 if (!propsGetSet.isEmpty()) {
365 w.write("public " + className + " applyBindings() {\n");
366 w.write(" ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(");
367 w.write(className + ".class, this, ");
368 writeStringArray(propsGetSet, w);
370 writeStringArray(functions, w);
371 w.write(");\n return this;\n}\n");
373 w.write("public void triggerEvent(Element e, OnEvent ev) {\n");
374 w.write(" org.apidesign.bck2brwsr.htmlpage.Knockout.triggerEvent(e.getId(), ev.getElementPropertyName());\n");
381 } catch (IOException ex) {
382 error("Can't create " + className + ".java", e);
388 private static String type(String tag) {
389 if (tag.equals("title")) {
392 if (tag.equals("button")) {
395 if (tag.equals("input")) {
398 if (tag.equals("canvas")) {
401 if (tag.equals("img")) {
407 private static String cnstnt(String id) {
408 return id.replace('.', '_').replace('-', '_');
411 private boolean initializeOnClick(
412 String className, TypeElement type, Writer w, ProcessPage pp
413 ) throws IOException {
415 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
416 { //for (Element clazz : pe.getEnclosedElements()) {
417 // if (clazz.getKind() != ElementKind.CLASS) {
420 w.append(" public ").append(className).append("() {\n");
421 StringBuilder dispatch = new StringBuilder();
423 for (Element method : type.getEnclosedElements()) {
424 On oc = method.getAnnotation(On.class);
426 for (String id : oc.id()) {
428 error("id = " + id + " not found in HTML page.", method);
432 if (pp.tagNameForId(id) == null) {
433 error("id = " + id + " does not exist in the HTML page. Found only " + pp.ids(), method);
437 ExecutableElement ee = (ExecutableElement)method;
438 CharSequence params = wrapParams(ee, id, className, "ev", null);
439 if (!ee.getModifiers().contains(Modifier.STATIC)) {
440 error("@On method has to be static", ee);
444 if (ee.getModifiers().contains(Modifier.PRIVATE)) {
445 error("@On method can't be private", ee);
449 w.append(" OnEvent." + oc.event()).append(".of(").append(cnstnt(id)).
450 append(").perform(new OnDispatch(" + dispatchCnt + "));\n");
453 append(" case ").append(dispatchCnt).append(": ").
454 append(type.getSimpleName().toString()).
455 append('.').append(ee.getSimpleName()).append("(").
457 append("); break;\n");
464 if (dispatchCnt > 0) {
465 // XXX: sun.misc.Trampoline cannot call public methods in non-public classes
466 w.append("public class OnDispatch implements OnHandler {\n");
467 w.append(" private final int dispatch;\n");
468 w.append(" OnDispatch(int d) { dispatch = d; }\n");
469 w.append(" public void onEvent(Object ev) {\n");
470 w.append(" switch (dispatch) {\n");
483 public Iterable<? extends Completion> getCompletions(
484 Element element, AnnotationMirror annotation,
485 ExecutableElement member, String userText
487 if (!userText.startsWith("\"")) {
488 return Collections.emptyList();
491 Element cls = findClass(element);
492 Page p = cls.getAnnotation(Page.class);
493 String pkg = findPkgName(cls);
496 InputStream is = openStream(pkg, p.xhtml());
497 pp = ProcessPage.readPage(is);
499 } catch (IOException iOException) {
500 return Collections.emptyList();
503 List<Completion> cc = new ArrayList<>();
504 userText = userText.substring(1);
505 for (String id : pp.ids()) {
506 if (id.startsWith(userText)) {
507 cc.add(Completions.of("\"" + id + "\"", id));
513 private static Element findClass(Element e) {
517 Page p = e.getAnnotation(Page.class);
521 return e.getEnclosingElement();
524 private boolean generateProperties(
526 Writer w, Prprt[] properties,
527 Collection<String> props,
528 Map<String,Collection<String>> deps,
529 Map<String,Collection<String>> functionDeps
530 ) throws IOException {
532 for (Prprt p : properties) {
534 tn = typeName(where, p);
535 String[] gs = toGetSet(p.name(), tn, p.array());
538 w.write("private KOList<" + tn + "> prop_" + p.name() + " = new KOList<" + tn + ">(\""
540 Collection<String> dependants = deps.get(p.name());
541 if (dependants != null) {
542 for (String depProp : dependants) {
551 dependants = functionDeps.get(p.name());
552 if (dependants != null) {
553 w.write(".onChange(new Runnable() { public void run() {\n");
554 for (String call : dependants) {
561 w.write("public java.util.List<" + tn + "> " + gs[0] + "() {\n");
562 w.write(" if (locked) throw new IllegalStateException();\n");
563 w.write(" prop_" + p.name() + ".assign(ko);\n");
564 w.write(" return prop_" + p.name() + ";\n");
567 w.write("private " + tn + " prop_" + p.name() + ";\n");
568 w.write("public " + tn + " " + gs[0] + "() {\n");
569 w.write(" if (locked) throw new IllegalStateException();\n");
570 w.write(" return prop_" + p.name() + ";\n");
572 w.write("public void " + gs[1] + "(" + tn + " v) {\n");
573 w.write(" if (locked) throw new IllegalStateException();\n");
574 w.write(" prop_" + p.name() + " = v;\n");
575 w.write(" if (ko != null) {\n");
576 w.write(" ko.valueHasMutated(\"" + p.name() + "\");\n");
577 Collection<String> dependants = deps.get(p.name());
578 if (dependants != null) {
579 for (String depProp : dependants) {
580 w.write(" ko.valueHasMutated(\"" + depProp + "\");\n");
584 dependants = functionDeps.get(p.name());
585 if (dependants != null) {
586 for (String call : dependants) {
601 private boolean generateComputedProperties(
602 Writer w, Prprt[] fixedProps,
603 Collection<? extends Element> arr, Collection<String> props,
604 Map<String,Collection<String>> deps
605 ) throws IOException {
607 for (Element e : arr) {
608 if (e.getKind() != ElementKind.METHOD) {
611 if (e.getAnnotation(ComputedProperty.class) == null) {
614 ExecutableElement ee = (ExecutableElement)e;
615 final TypeMirror rt = ee.getReturnType();
616 final Types tu = processingEnv.getTypeUtils();
617 TypeMirror ert = tu.erasure(rt);
618 String tn = fqn(ert, ee);
619 boolean array = false;
620 if (tn.equals("java.util.List")) {
624 final String sn = ee.getSimpleName().toString();
625 String[] gs = toGetSet(sn, tn, array);
627 w.write("public " + tn + " " + gs[0] + "() {\n");
628 w.write(" if (locked) throw new IllegalStateException();\n");
630 for (VariableElement pe : ee.getParameters()) {
631 final String dn = pe.getSimpleName().toString();
633 if (!verifyPropName(pe, dn, fixedProps)) {
637 final String dt = fqn(pe.asType(), ee);
638 String[] call = toGetSet(dn, dt, false);
639 w.write(" " + dt + " arg" + (++arg) + " = ");
640 w.write(call[0] + "();\n");
642 Collection<String> depends = deps.get(dn);
643 if (depends == null) {
644 depends = new LinkedHashSet<>();
645 deps.put(dn, depends);
650 w.write(" locked = true;\n");
651 w.write(" return " + fqn(ee.getEnclosingElement().asType(), ee) + '.' + e.getSimpleName() + "(");
653 for (int i = 1; i <= arg; i++) {
659 w.write(" } finally {\n");
660 w.write(" locked = false;\n");
664 props.add(e.getSimpleName().toString());
673 private static String[] toGetSet(String name, String type, boolean array) {
674 String n = Character.toUpperCase(name.charAt(0)) + name.substring(1);
675 String bck2brwsrType = "L" + type.replace('.', '_') + "_2";
676 if ("int".equals(type)) {
679 if ("double".equals(type)) {
683 if ("boolean".equals(type)) {
687 final String nu = n.replace('.', '_');
689 return new String[] {
692 "get" + nu + "__Ljava_util_List_2",
699 pref + nu + "__" + bck2brwsrType,
700 "set" + nu + "__V" + bck2brwsrType
704 private String typeName(Element where, Prprt p) {
706 boolean[] isModel = { false };
707 boolean[] isEnum = { false };
708 boolean isPrimitive[] = { false };
709 ret = checkType(p, isModel, isEnum, isPrimitive);
711 String bt = findBoxedType(ret);
719 private static String findBoxedType(String ret) {
720 if (ret.equals("boolean")) {
721 return Boolean.class.getName();
723 if (ret.equals("byte")) {
724 return Byte.class.getName();
726 if (ret.equals("short")) {
727 return Short.class.getName();
729 if (ret.equals("char")) {
730 return Character.class.getName();
732 if (ret.equals("int")) {
733 return Integer.class.getName();
735 if (ret.equals("long")) {
736 return Long.class.getName();
738 if (ret.equals("float")) {
739 return Float.class.getName();
741 if (ret.equals("double")) {
742 return Double.class.getName();
747 private boolean verifyPropName(Element e, String propName, Prprt[] existingProps) {
748 StringBuilder sb = new StringBuilder();
750 for (Prprt Prprt : existingProps) {
751 if (Prprt.name().equals(propName)) {
756 sb.append(Prprt.name());
761 propName + " is not one of known properties: " + sb
767 private static String findPkgName(Element e) {
769 if (e.getKind() == ElementKind.PACKAGE) {
770 return ((PackageElement)e).getQualifiedName().toString();
772 e = e.getEnclosingElement();
776 private boolean generateFunctions(
777 Element clazz, StringWriter body, String className,
778 List<? extends Element> enclosedElements, List<String> functions
780 for (Element m : enclosedElements) {
781 if (m.getKind() != ElementKind.METHOD) {
784 ExecutableElement e = (ExecutableElement)m;
785 OnFunction onF = e.getAnnotation(OnFunction.class);
789 if (!e.getModifiers().contains(Modifier.STATIC)) {
790 error("@OnFunction method needs to be static", e);
793 if (e.getModifiers().contains(Modifier.PRIVATE)) {
794 error("@OnFunction method cannot be private", e);
797 if (e.getReturnType().getKind() != TypeKind.VOID) {
798 error("@OnFunction method should return void", e);
801 String n = e.getSimpleName().toString();
802 body.append("private void ").append(n).append("(Object data, Object ev) {\n");
803 body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
804 body.append(wrapParams(e, null, className, "ev", "data"));
809 functions.add(n + "__VLjava_lang_Object_2Ljava_lang_Object_2");
814 private boolean generateOnChange(Element clazz, Map<String,Collection<String>> propDeps,
815 Prprt[] properties, String className,
816 Map<String, Collection<String>> functionDeps
818 for (Element m : clazz.getEnclosedElements()) {
819 if (m.getKind() != ElementKind.METHOD) {
822 ExecutableElement e = (ExecutableElement) m;
823 OnPropertyChange onPC = e.getAnnotation(OnPropertyChange.class);
827 for (String pn : onPC.value()) {
828 if (findPrprt(properties, pn) == null && findDerivedFrom(propDeps, pn).isEmpty()) {
829 error("No Prprt named '" + pn + "' in the model", clazz);
833 if (!e.getModifiers().contains(Modifier.STATIC)) {
834 error("@OnPrprtChange method needs to be static", e);
837 if (e.getModifiers().contains(Modifier.PRIVATE)) {
838 error("@OnPrprtChange method cannot be private", e);
841 if (e.getReturnType().getKind() != TypeKind.VOID) {
842 error("@OnPrprtChange method should return void", e);
845 String n = e.getSimpleName().toString();
848 for (String pn : onPC.value()) {
849 StringBuilder call = new StringBuilder();
850 call.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
851 call.append(wrapPropName(e, className, "name", pn));
854 Collection<String> change = functionDeps.get(pn);
855 if (change == null) {
856 change = new ArrayList<>();
857 functionDeps.put(pn, change);
859 change.add(call.toString());
860 for (String dpn : findDerivedFrom(propDeps, pn)) {
861 change = functionDeps.get(dpn);
862 if (change == null) {
863 change = new ArrayList<>();
864 functionDeps.put(dpn, change);
866 change.add(call.toString());
873 private boolean generateReceive(
874 Element clazz, StringWriter body, String className,
875 List<? extends Element> enclosedElements, List<String> functions
877 for (Element m : enclosedElements) {
878 if (m.getKind() != ElementKind.METHOD) {
881 ExecutableElement e = (ExecutableElement)m;
882 OnReceive onR = e.getAnnotation(OnReceive.class);
886 if (!e.getModifiers().contains(Modifier.STATIC)) {
887 error("@OnReceive method needs to be static", e);
890 if (e.getModifiers().contains(Modifier.PRIVATE)) {
891 error("@OnReceive method cannot be private", e);
894 if (e.getReturnType().getKind() != TypeKind.VOID) {
895 error("@OnReceive method should return void", e);
898 String modelClass = null;
899 boolean expectsList = false;
900 List<String> args = new ArrayList<>();
902 for (VariableElement ve : e.getParameters()) {
903 TypeMirror modelType = null;
904 if (ve.asType().toString().equals(className)) {
905 args.add(className + ".this");
906 } else if (isModel(ve.asType())) {
907 modelType = ve.asType();
908 } else if (ve.asType().getKind() == TypeKind.ARRAY) {
909 modelType = ((ArrayType)ve.asType()).getComponentType();
912 if (modelType != null) {
913 if (modelClass != null) {
914 error("There can be only one model class among arguments", e);
916 modelClass = modelType.toString();
926 if (modelClass == null) {
927 error("The method needs to have one @Model class as parameter", e);
929 String n = e.getSimpleName().toString();
930 body.append("public void ").append(n).append("(");
931 StringBuilder assembleURL = new StringBuilder();
932 String jsonpVarName = null;
935 boolean skipJSONP = onR.jsonp().isEmpty();
936 for (String p : findParamNames(e, onR.url(), assembleURL)) {
937 if (!skipJSONP && p.equals(onR.jsonp())) {
943 body.append("String ").append(p);
948 "Name of jsonp attribute ('" + onR.jsonp() +
949 "') is not used in url attribute '" + onR.url() + "'", e
953 body.append(") {\n");
954 body.append(" final Object[] result = { null };\n");
956 " class ProcessResult implements Runnable {\n" +
958 " public void run() {\n" +
959 " Object value = result[0];\n");
961 " " + modelClass + "[] arr;\n");
963 " if (value instanceof Object[]) {\n" +
964 " Object[] data = ((Object[])value);\n" +
965 " arr = new " + modelClass + "[data.length];\n" +
966 " for (int i = 0; i < data.length; i++) {\n" +
967 " arr[i] = new " + modelClass + "(data[i]);\n" +
970 " arr = new " + modelClass + "[1];\n" +
971 " arr[0] = new " + modelClass + "(value);\n" +
975 body.append(clazz.getSimpleName()).append(".").append(n).append("(");
977 for (String arg : args) {
988 body.append(" ProcessResult pr = new ProcessResult();\n");
989 if (jsonpVarName != null) {
990 body.append(" String ").append(jsonpVarName).
991 append(" = org.apidesign.bck2brwsr.htmlpage.ConvertTypes.createJSONP(result, pr);\n");
993 body.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.loadJSON(\n ");
994 body.append(assembleURL);
995 body.append(", result, pr, ").append(jsonpVarName).append("\n );\n");
996 // body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
997 // body.append(wrapParams(e, null, className, "ev", "data"));
998 // body.append(");\n");
1004 private CharSequence wrapParams(
1005 ExecutableElement ee, String id, String className, String evName, String dataName
1007 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
1008 StringBuilder params = new StringBuilder();
1009 boolean first = true;
1010 for (VariableElement ve : ee.getParameters()) {
1012 params.append(", ");
1015 String toCall = null;
1016 if (ve.asType() == stringType) {
1017 if (ve.getSimpleName().contentEquals("id")) {
1018 params.append('"').append(id).append('"');
1021 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toString(";
1023 if (ve.asType().getKind() == TypeKind.DOUBLE) {
1024 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toDouble(";
1026 if (ve.asType().getKind() == TypeKind.INT) {
1027 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toInt(";
1029 if (dataName != null && ve.getSimpleName().contentEquals(dataName) && isModel(ve.asType())) {
1030 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toModel(" + ve.asType() + ".class, ";
1033 if (toCall != null) {
1034 params.append(toCall);
1035 if (dataName != null && ve.getSimpleName().contentEquals(dataName)) {
1036 params.append(dataName);
1037 params.append(", null");
1039 if (evName == null) {
1040 final StringBuilder sb = new StringBuilder();
1041 sb.append("Unexpected string parameter name.");
1042 if (dataName != null) {
1043 sb.append(" Try \"").append(dataName).append("\"");
1045 error(sb.toString(), ee);
1047 params.append(evName);
1048 params.append(", \"");
1049 params.append(ve.getSimpleName().toString());
1050 params.append("\"");
1055 String rn = fqn(ve.asType(), ee);
1056 int last = rn.lastIndexOf('.');
1058 rn = rn.substring(last + 1);
1060 if (rn.equals(className)) {
1061 params.append(className).append(".this");
1065 "@On method can only accept String named 'id' or " + className + " arguments",
1073 private CharSequence wrapPropName(
1074 ExecutableElement ee, String className, String propName, String propValue
1076 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
1077 StringBuilder params = new StringBuilder();
1078 boolean first = true;
1079 for (VariableElement ve : ee.getParameters()) {
1081 params.append(", ");
1084 if (ve.asType() == stringType) {
1085 if (propName != null && ve.getSimpleName().contentEquals(propName)) {
1086 params.append('"').append(propValue).append('"');
1088 error("Unexpected string parameter name. Try \"" + propName + "\".", ee);
1092 String rn = fqn(ve.asType(), ee);
1093 int last = rn.lastIndexOf('.');
1095 rn = rn.substring(last + 1);
1097 if (rn.equals(className)) {
1098 params.append(className).append(".this");
1102 "@OnPrprtChange method can only accept String or " + className + " arguments",
1108 private boolean isModel(TypeMirror tm) {
1109 final Element e = processingEnv.getTypeUtils().asElement(tm);
1113 for (Element ch : e.getEnclosedElements()) {
1114 if (ch.getKind() == ElementKind.METHOD) {
1115 ExecutableElement ee = (ExecutableElement)ch;
1116 if (ee.getParameters().isEmpty() && ee.getSimpleName().contentEquals("modelFor")) {
1121 return models.values().contains(e.getSimpleName().toString());
1124 private void writeStringArray(List<String> strings, Writer w) throws IOException {
1125 w.write("new String[] {\n");
1127 for (String n : strings) {
1132 w.write(" \"" + n + "\"");
1139 private void writeToString(Prprt[] props, Writer w) throws IOException {
1140 w.write(" public String toString() {\n");
1141 w.write(" StringBuilder sb = new StringBuilder();\n");
1142 w.write(" sb.append('{');\n");
1144 for (Prprt p : props) {
1146 w.append(" sb.append(\"" + p.name() + ": \");\n");
1147 w.append(" sb.append(org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toJSON(prop_");
1148 w.append(p.name()).append("));\n");
1149 sep = " sb.append(',');\n";
1151 w.write(" sb.append('}');\n");
1152 w.write(" return sb.toString();\n");
1155 private void writeClone(String className, Prprt[] props, Writer w) throws IOException {
1156 w.write(" public " + className + " clone() {\n");
1157 w.write(" " + className + " ret = new " + className + "();\n");
1158 for (Prprt p : props) {
1160 boolean isModel[] = { false };
1161 boolean isEnum[] = { false };
1162 boolean isPrimitive[] = { false };
1163 checkType(p, isModel, isEnum, isPrimitive);
1165 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ";\n");
1168 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ".clone();\n");
1170 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ".clone();\n");
1174 w.write(" return ret;\n");
1178 private String inPckName(Element e) {
1179 StringBuilder sb = new StringBuilder();
1180 while (e.getKind() != ElementKind.PACKAGE) {
1181 if (sb.length() == 0) {
1182 sb.append(e.getSimpleName());
1185 sb.insert(0, e.getSimpleName());
1187 e = e.getEnclosingElement();
1189 return sb.toString();
1192 private String fqn(TypeMirror pt, Element relative) {
1193 if (pt.getKind() == TypeKind.ERROR) {
1194 final Elements eu = processingEnv.getElementUtils();
1195 PackageElement pckg = eu.getPackageOf(relative);
1196 return pckg.getQualifiedName() + "." + pt.toString();
1198 return pt.toString();
1201 private String checkType(Prprt p, boolean[] isModel, boolean[] isEnum, boolean[] isPrimitive) {
1204 String ret = p.typeName(processingEnv);
1205 TypeElement e = processingEnv.getElementUtils().getTypeElement(ret);
1209 isPrimitive[0] = false;
1213 } catch (MirroredTypeException ex) {
1214 tm = ex.getTypeMirror();
1216 tm = processingEnv.getTypeUtils().erasure(tm);
1217 isPrimitive[0] = tm.getKind().isPrimitive();
1218 final Element e = processingEnv.getTypeUtils().asElement(tm);
1219 final Model m = e == null ? null : e.getAnnotation(Model.class);
1223 ret = findPkgName(e) + '.' + m.className();
1225 models.put(e, m.className());
1226 } else if (findModelForMthd(e)) {
1227 ret = ((TypeElement)e).getQualifiedName().toString();
1230 ret = tm.toString();
1232 TypeMirror enm = processingEnv.getElementUtils().getTypeElement("java.lang.Enum").asType();
1233 enm = processingEnv.getTypeUtils().erasure(enm);
1234 isEnum[0] = processingEnv.getTypeUtils().isSubtype(tm, enm);
1238 private static boolean findModelForMthd(Element clazz) {
1239 if (clazz == null) {
1242 for (Element e : clazz.getEnclosedElements()) {
1243 if (e.getKind() == ElementKind.METHOD) {
1244 ExecutableElement ee = (ExecutableElement)e;
1246 ee.getSimpleName().contentEquals("modelFor") &&
1247 ee.getParameters().isEmpty()
1256 private Iterable<String> findParamNames(Element e, String url, StringBuilder assembleURL) {
1257 List<String> params = new ArrayList<>();
1259 for (int pos = 0; ;) {
1260 int next = url.indexOf('{', pos);
1262 assembleURL.append('"')
1263 .append(url.substring(pos))
1267 int close = url.indexOf('}', next);
1269 error("Unbalanced '{' and '}' in " + url, e);
1272 final String paramName = url.substring(next + 1, close);
1273 params.add(paramName);
1274 assembleURL.append('"')
1275 .append(url.substring(pos, next))
1276 .append("\" + ").append(paramName).append(" + ");
1281 private static Prprt findPrprt(Prprt[] properties, String propName) {
1282 for (Prprt p : properties) {
1283 if (propName.equals(p.name())) {
1290 private boolean isPrimitive(String type) {
1292 "int".equals(type) ||
1293 "double".equals(type) ||
1294 "long".equals(type) ||
1295 "short".equals(type) ||
1296 "byte".equals(type) ||
1297 "float".equals(type);
1300 private static Collection<String> findDerivedFrom(Map<String, Collection<String>> propsDeps, String derivedProp) {
1301 Set<String> names = new HashSet<>();
1302 for (Map.Entry<String, Collection<String>> e : propsDeps.entrySet()) {
1303 if (e.getValue().contains(derivedProp)) {
1304 names.add(e.getKey());
1310 private Prprt[] createProps(Element e, Property[] arr) {
1311 Prprt[] ret = Prprt.wrap(processingEnv, e, arr);
1312 Prprt[] prev = verify.put(e, ret);
1314 error("Two sets of properties for ", e);
1319 private static class Prprt {
1320 private final Element e;
1321 private final AnnotationMirror tm;
1322 private final Property p;
1324 public Prprt(Element e, AnnotationMirror tm, Property p) {
1338 String typeName(ProcessingEnvironment env) {
1340 return p.type().getName();
1341 } catch (IncompleteAnnotationException | AnnotationTypeMismatchException ex) {
1342 for (Object v : getAnnoValues(env)) {
1343 String s = v.toString().replace(" ", "");
1344 if (s.startsWith("type=") && s.endsWith(".class")) {
1345 return s.substring(5, s.length() - 6);
1353 static Prprt[] wrap(ProcessingEnvironment pe, Element e, Property[] arr) {
1354 if (arr.length == 0) {
1355 return new Prprt[0];
1358 if (e.getKind() != ElementKind.CLASS) {
1359 throw new IllegalStateException("" + e.getKind());
1361 TypeElement te = (TypeElement)e;
1362 List<? extends AnnotationValue> val = null;
1363 for (AnnotationMirror an : te.getAnnotationMirrors()) {
1364 for (Map.Entry<? extends ExecutableElement, ? extends AnnotationValue> entry : an.getElementValues().entrySet()) {
1365 if (entry.getKey().getSimpleName().contentEquals("properties")) {
1366 val = (List)entry.getValue().getValue();
1371 if (val == null || val.size() != arr.length) {
1372 pe.getMessager().printMessage(Diagnostic.Kind.ERROR, "" + val, e);
1373 return new Prprt[0];
1375 Prprt[] ret = new Prprt[arr.length];
1376 BIG: for (int i = 0; i < ret.length; i++) {
1377 AnnotationMirror am = (AnnotationMirror)val.get(i).getValue();
1378 ret[i] = new Prprt(e, am, arr[i]);
1384 private List<? extends Object> getAnnoValues(ProcessingEnvironment pe) {
1386 Class<?> trees = Class.forName("com.sun.tools.javac.api.JavacTrees");
1387 Method m = trees.getMethod("instance", ProcessingEnvironment.class);
1388 Object instance = m.invoke(null, pe);
1389 m = instance.getClass().getMethod("getPath", Element.class, AnnotationMirror.class);
1390 Object path = m.invoke(instance, e, tm);
1391 m = path.getClass().getMethod("getLeaf");
1392 Object leaf = m.invoke(path);
1393 m = leaf.getClass().getMethod("getArguments");
1394 return (List)m.invoke(leaf);
1395 } catch (Exception ex) {
1396 return Collections.emptyList();