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.util.ArrayList;
26 import java.util.Collection;
27 import java.util.Collections;
28 import java.util.HashMap;
29 import java.util.HashSet;
30 import java.util.LinkedHashSet;
31 import java.util.List;
34 import java.util.WeakHashMap;
35 import javax.annotation.processing.AbstractProcessor;
36 import javax.annotation.processing.Completion;
37 import javax.annotation.processing.Completions;
38 import javax.annotation.processing.Messager;
39 import javax.annotation.processing.Processor;
40 import javax.annotation.processing.RoundEnvironment;
41 import javax.annotation.processing.SupportedAnnotationTypes;
42 import javax.lang.model.element.AnnotationMirror;
43 import javax.lang.model.element.Element;
44 import javax.lang.model.element.ElementKind;
45 import javax.lang.model.element.ExecutableElement;
46 import javax.lang.model.element.Modifier;
47 import javax.lang.model.element.PackageElement;
48 import javax.lang.model.element.TypeElement;
49 import javax.lang.model.element.VariableElement;
50 import javax.lang.model.type.ArrayType;
51 import javax.lang.model.type.DeclaredType;
52 import javax.lang.model.type.MirroredTypeException;
53 import javax.lang.model.type.TypeKind;
54 import javax.lang.model.type.TypeMirror;
55 import javax.lang.model.util.Elements;
56 import javax.lang.model.util.Types;
57 import javax.tools.Diagnostic;
58 import javax.tools.FileObject;
59 import javax.tools.StandardLocation;
60 import org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty;
61 import org.apidesign.bck2brwsr.htmlpage.api.Model;
62 import org.apidesign.bck2brwsr.htmlpage.api.On;
63 import org.apidesign.bck2brwsr.htmlpage.api.OnFunction;
64 import org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange;
65 import org.apidesign.bck2brwsr.htmlpage.api.OnReceive;
66 import org.apidesign.bck2brwsr.htmlpage.api.Page;
67 import org.apidesign.bck2brwsr.htmlpage.api.Property;
68 import org.openide.util.lookup.ServiceProvider;
70 /** Annotation processor to process an XHTML page and generate appropriate
73 * @author Jaroslav Tulach <jtulach@netbeans.org>
75 @ServiceProvider(service=Processor.class)
76 @SupportedAnnotationTypes({
77 "org.apidesign.bck2brwsr.htmlpage.api.Model",
78 "org.apidesign.bck2brwsr.htmlpage.api.Page",
79 "org.apidesign.bck2brwsr.htmlpage.api.OnFunction",
80 "org.apidesign.bck2brwsr.htmlpage.api.OnReceive",
81 "org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange",
82 "org.apidesign.bck2brwsr.htmlpage.api.On"
84 public final class PageProcessor extends AbstractProcessor {
85 private final Map<Element,String> models = new WeakHashMap<>();
87 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
89 for (Element e : roundEnv.getElementsAnnotatedWith(Model.class)) {
90 if (!processModel(e)) {
94 for (Element e : roundEnv.getElementsAnnotatedWith(Page.class)) {
95 if (!processPage(e)) {
99 if (roundEnv.processingOver()) {
105 private InputStream openStream(String pkg, String name) throws IOException {
107 FileObject fo = processingEnv.getFiler().getResource(
108 StandardLocation.SOURCE_PATH, pkg, name);
109 return fo.openInputStream();
110 } catch (IOException ex) {
111 return processingEnv.getFiler().getResource(StandardLocation.CLASS_OUTPUT, pkg, name).openInputStream();
115 private Messager err() {
116 return processingEnv.getMessager();
119 private boolean processModel(Element e) {
121 Model m = e.getAnnotation(Model.class);
125 String pkg = findPkgName(e);
127 String className = m.className();
128 models.put(e, className);
130 StringWriter body = new StringWriter();
131 List<String> propsGetSet = new ArrayList<>();
132 List<String> functions = new ArrayList<>();
133 Map<String, Collection<String>> propsDeps = new HashMap<>();
134 Map<String, Collection<String>> functionDeps = new HashMap<>();
135 if (!generateComputedProperties(body, m.properties(), e.getEnclosedElements(), propsGetSet, propsDeps)) {
138 if (!generateOnChange(e, propsDeps, m.properties(), className, functionDeps)) {
141 if (!generateProperties(e, body, m.properties(), propsGetSet, propsDeps, functionDeps)) {
144 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
147 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
148 w = new OutputStreamWriter(java.openOutputStream());
150 w.append("package " + pkg + ";\n");
151 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
152 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
153 w.append("import org.apidesign.bck2brwsr.core.JavaScriptOnly;\n");
154 w.append("final class ").append(className).append(" implements Cloneable {\n");
155 w.append(" private boolean locked;\n");
156 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
157 w.append(body.toString());
158 w.append(" private static Class<" + inPckName(e) + "> modelFor() { return null; }\n");
159 w.append(" public ").append(className).append("() {\n");
160 w.append(" intKnckt();\n");
162 w.append(" private void intKnckt() {\n");
163 w.append(" ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(this, ");
164 writeStringArray(propsGetSet, w);
166 writeStringArray(functions, w);
169 w.append(" ").append(className).append("(Object json) {\n");
171 for (int i = 0; i < propsGetSet.size(); i += 4) {
172 Property p = findProperty(m.properties(), propsGetSet.get(i));
178 w.append(" Object[] ret = new Object[" + values + "];\n");
179 w.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.extractJSON(json, new String[] {\n");
180 for (int i = 0; i < propsGetSet.size(); i += 4) {
181 Property p = findProperty(m.properties(), propsGetSet.get(i));
185 w.append(" \"").append(propsGetSet.get(i)).append("\",\n");
187 w.append(" }, ret);\n");
188 for (int i = 0, cnt = 0, prop = 0; i < propsGetSet.size(); i += 4) {
189 final String pn = propsGetSet.get(i);
190 Property p = findProperty(m.properties(), pn);
194 boolean[] isModel = { false };
195 boolean[] isEnum = { false };
196 String type = checkType(m.properties()[prop++], isModel, isEnum);
198 // w.append(type).append(".valueOf((String)");
200 w.append(" this.prop_").append(pn);
201 w.append(" = null;\n");
202 } else if (p.array()) {
203 w.append("if (ret[" + cnt + "] instanceof Object[]) {\n");
204 w.append(" for (Object e : ((Object[])ret[" + cnt + "])) {\n");
206 w.append(" this.prop_").append(pn).append(".add(new ");
207 w.append(type).append("(e));\n");
209 if (isPrimitive(type)) {
210 w.append(" this.prop_").append(pn).append(".add(((Number)e).");
211 w.append(type).append("Value());\n");
213 w.append(" this.prop_").append(pn).append(".add((");
214 w.append(type).append(")e);\n");
220 if (isPrimitive(type)) {
221 w.append(" this.prop_").append(pn);
222 w.append(" = ((Number)").append("ret[" + cnt + "]).");
223 w.append(type).append("Value();\n");
225 w.append(" this.prop_").append(pn);
226 w.append(" = (").append(type).append(')');
227 w.append("ret[" + cnt + "];\n");
232 w.append(" intKnckt();\n");
234 writeToString(m.properties(), w);
235 writeClone(className, m.properties(), w);
240 } catch (IOException ex) {
241 err().printMessage(Diagnostic.Kind.ERROR, "Can't create " + className + ".java", e);
247 private boolean processPage(Element e) {
249 Page p = e.getAnnotation(Page.class);
253 String pkg = findPkgName(e);
256 try (InputStream is = openStream(pkg, p.xhtml())) {
257 pp = ProcessPage.readPage(is);
259 } catch (IOException iOException) {
260 err().printMessage(Diagnostic.Kind.ERROR, "Can't read " + p.xhtml() + " as " + iOException.getMessage(), e);
265 String className = p.className();
266 if (className.isEmpty()) {
267 int indx = p.xhtml().indexOf('.');
268 className = p.xhtml().substring(0, indx);
271 StringWriter body = new StringWriter();
272 List<String> propsGetSet = new ArrayList<>();
273 List<String> functions = new ArrayList<>();
274 Map<String, Collection<String>> propsDeps = new HashMap<>();
275 Map<String, Collection<String>> functionDeps = new HashMap<>();
276 if (!generateComputedProperties(body, p.properties(), e.getEnclosedElements(), propsGetSet, propsDeps)) {
279 if (!generateOnChange(e, propsDeps, p.properties(), className, functionDeps)) {
282 if (!generateProperties(e, body, p.properties(), propsGetSet, propsDeps, functionDeps)) {
285 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
288 if (!generateReceive(e, body, className, e.getEnclosedElements(), functions)) {
292 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
293 w = new OutputStreamWriter(java.openOutputStream());
295 w.append("package " + pkg + ";\n");
296 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
297 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
298 w.append("final class ").append(className).append(" {\n");
299 w.append(" private boolean locked;\n");
300 if (!initializeOnClick(className, (TypeElement) e, w, pp)) {
303 if (pp != null) for (String id : pp.ids()) {
304 String tag = pp.tagNameForId(id);
305 String type = type(tag);
306 w.append(" ").append("public final ").
307 append(type).append(' ').append(cnstnt(id)).append(" = new ").
308 append(type).append("(\"").append(id).append("\");\n");
311 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
312 w.append(body.toString());
313 if (!propsGetSet.isEmpty()) {
314 w.write("public " + className + " applyBindings() {\n");
315 w.write(" ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(");
316 w.write(className + ".class, this, ");
317 writeStringArray(propsGetSet, w);
319 writeStringArray(functions, w);
320 w.write(");\n return this;\n}\n");
322 w.write("public void triggerEvent(Element e, OnEvent ev) {\n");
323 w.write(" org.apidesign.bck2brwsr.htmlpage.Knockout.triggerEvent(e.getId(), ev.getElementPropertyName());\n");
330 } catch (IOException ex) {
331 err().printMessage(Diagnostic.Kind.ERROR, "Can't create " + className + ".java", e);
337 private static String type(String tag) {
338 if (tag.equals("title")) {
341 if (tag.equals("button")) {
344 if (tag.equals("input")) {
347 if (tag.equals("canvas")) {
350 if (tag.equals("img")) {
356 private static String cnstnt(String id) {
357 return id.replace('.', '_').replace('-', '_');
360 private boolean initializeOnClick(
361 String className, TypeElement type, Writer w, ProcessPage pp
362 ) throws IOException {
364 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
365 { //for (Element clazz : pe.getEnclosedElements()) {
366 // if (clazz.getKind() != ElementKind.CLASS) {
369 w.append(" public ").append(className).append("() {\n");
370 StringBuilder dispatch = new StringBuilder();
372 for (Element method : type.getEnclosedElements()) {
373 On oc = method.getAnnotation(On.class);
375 for (String id : oc.id()) {
377 err().printMessage(Diagnostic.Kind.ERROR, "id = " + id + " not found in HTML page.");
381 if (pp.tagNameForId(id) == null) {
382 err().printMessage(Diagnostic.Kind.ERROR, "id = " + id + " does not exist in the HTML page. Found only " + pp.ids(), method);
386 ExecutableElement ee = (ExecutableElement)method;
387 CharSequence params = wrapParams(ee, id, className, "ev", null);
388 if (!ee.getModifiers().contains(Modifier.STATIC)) {
389 err().printMessage(Diagnostic.Kind.ERROR, "@On method has to be static", ee);
393 if (ee.getModifiers().contains(Modifier.PRIVATE)) {
394 err().printMessage(Diagnostic.Kind.ERROR, "@On method can't be private", ee);
398 w.append(" OnEvent." + oc.event()).append(".of(").append(cnstnt(id)).
399 append(").perform(new OnDispatch(" + dispatchCnt + "));\n");
402 append(" case ").append(dispatchCnt).append(": ").
403 append(type.getSimpleName().toString()).
404 append('.').append(ee.getSimpleName()).append("(").
406 append("); break;\n");
413 if (dispatchCnt > 0) {
414 w.append("class OnDispatch implements OnHandler {\n");
415 w.append(" private final int dispatch;\n");
416 w.append(" OnDispatch(int d) { dispatch = d; }\n");
417 w.append(" public void onEvent(Object ev) {\n");
418 w.append(" switch (dispatch) {\n");
431 public Iterable<? extends Completion> getCompletions(
432 Element element, AnnotationMirror annotation,
433 ExecutableElement member, String userText
435 if (!userText.startsWith("\"")) {
436 return Collections.emptyList();
439 Element cls = findClass(element);
440 Page p = cls.getAnnotation(Page.class);
441 String pkg = findPkgName(cls);
444 InputStream is = openStream(pkg, p.xhtml());
445 pp = ProcessPage.readPage(is);
447 } catch (IOException iOException) {
448 return Collections.emptyList();
451 List<Completion> cc = new ArrayList<>();
452 userText = userText.substring(1);
453 for (String id : pp.ids()) {
454 if (id.startsWith(userText)) {
455 cc.add(Completions.of("\"" + id + "\"", id));
461 private static Element findClass(Element e) {
465 Page p = e.getAnnotation(Page.class);
469 return e.getEnclosingElement();
472 private boolean generateProperties(
474 Writer w, Property[] properties,
475 Collection<String> props,
476 Map<String,Collection<String>> deps,
477 Map<String,Collection<String>> functionDeps
478 ) throws IOException {
480 for (Property p : properties) {
482 tn = typeName(where, p);
483 String[] gs = toGetSet(p.name(), tn, p.array());
486 w.write("private KOList<" + tn + "> prop_" + p.name() + " = new KOList<" + tn + ">(\""
488 Collection<String> dependants = deps.get(p.name());
489 if (dependants != null) {
490 for (String depProp : dependants) {
499 dependants = functionDeps.get(p.name());
500 if (dependants != null) {
501 w.write(".onChange(new Runnable() { public void run() {\n");
502 for (String call : dependants) {
509 w.write("public java.util.List<" + tn + "> " + gs[0] + "() {\n");
510 w.write(" if (locked) throw new IllegalStateException();\n");
511 w.write(" prop_" + p.name() + ".assign(ko);\n");
512 w.write(" return prop_" + p.name() + ";\n");
515 w.write("private " + tn + " prop_" + p.name() + ";\n");
516 w.write("public " + tn + " " + gs[0] + "() {\n");
517 w.write(" if (locked) throw new IllegalStateException();\n");
518 w.write(" return prop_" + p.name() + ";\n");
520 w.write("public void " + gs[1] + "(" + tn + " v) {\n");
521 w.write(" if (locked) throw new IllegalStateException();\n");
522 w.write(" prop_" + p.name() + " = v;\n");
523 w.write(" if (ko != null) {\n");
524 w.write(" ko.valueHasMutated(\"" + p.name() + "\");\n");
525 Collection<String> dependants = deps.get(p.name());
526 if (dependants != null) {
527 for (String depProp : dependants) {
528 w.write(" ko.valueHasMutated(\"" + depProp + "\");\n");
532 dependants = functionDeps.get(p.name());
533 if (dependants != null) {
534 for (String call : dependants) {
549 private boolean generateComputedProperties(
550 Writer w, Property[] fixedProps,
551 Collection<? extends Element> arr, Collection<String> props,
552 Map<String,Collection<String>> deps
553 ) throws IOException {
555 for (Element e : arr) {
556 if (e.getKind() != ElementKind.METHOD) {
559 if (e.getAnnotation(ComputedProperty.class) == null) {
562 ExecutableElement ee = (ExecutableElement)e;
563 final TypeMirror rt = ee.getReturnType();
564 final Types tu = processingEnv.getTypeUtils();
565 TypeMirror ert = tu.erasure(rt);
566 String tn = fqn(ert, ee);
567 boolean array = false;
568 if (tn.equals("java.util.List")) {
572 final String sn = ee.getSimpleName().toString();
573 String[] gs = toGetSet(sn, tn, array);
575 w.write("public " + tn + " " + gs[0] + "() {\n");
576 w.write(" if (locked) throw new IllegalStateException();\n");
578 for (VariableElement pe : ee.getParameters()) {
579 final String dn = pe.getSimpleName().toString();
581 if (!verifyPropName(pe, dn, fixedProps)) {
585 final String dt = fqn(pe.asType(), ee);
586 String[] call = toGetSet(dn, dt, false);
587 w.write(" " + dt + " arg" + (++arg) + " = ");
588 w.write(call[0] + "();\n");
590 Collection<String> depends = deps.get(dn);
591 if (depends == null) {
592 depends = new LinkedHashSet<>();
593 deps.put(dn, depends);
598 w.write(" locked = true;\n");
599 w.write(" return " + e.getEnclosingElement().getSimpleName() + '.' + e.getSimpleName() + "(");
601 for (int i = 1; i <= arg; i++) {
607 w.write(" } finally {\n");
608 w.write(" locked = false;\n");
612 props.add(e.getSimpleName().toString());
621 private static String[] toGetSet(String name, String type, boolean array) {
622 String n = Character.toUpperCase(name.charAt(0)) + name.substring(1);
623 String bck2brwsrType = "L" + type.replace('.', '_') + "_2";
624 if ("int".equals(type)) {
627 if ("double".equals(type)) {
631 if ("boolean".equals(type)) {
635 final String nu = n.replace('.', '_');
637 return new String[] {
640 "get" + nu + "__Ljava_util_List_2",
647 pref + nu + "__" + bck2brwsrType,
648 "set" + nu + "__V" + bck2brwsrType
652 private String typeName(Element where, Property p) {
654 boolean[] isModel = { false };
655 boolean[] isEnum = { false };
656 ret = checkType(p, isModel, isEnum);
658 String bt = findBoxedType(ret);
663 if (!isModel[0] && !"java.lang.String".equals(ret) && !isEnum[0]) {
664 String bt = findBoxedType(ret);
667 Diagnostic.Kind.ERROR,
668 "Only primitive types supported in the mapping. Not " + ret,
676 private static String findBoxedType(String ret) {
677 if (ret.equals("boolean")) {
678 return Boolean.class.getName();
680 if (ret.equals("byte")) {
681 return Byte.class.getName();
683 if (ret.equals("short")) {
684 return Short.class.getName();
686 if (ret.equals("char")) {
687 return Character.class.getName();
689 if (ret.equals("int")) {
690 return Integer.class.getName();
692 if (ret.equals("long")) {
693 return Long.class.getName();
695 if (ret.equals("float")) {
696 return Float.class.getName();
698 if (ret.equals("double")) {
699 return Double.class.getName();
704 private boolean verifyPropName(Element e, String propName, Property[] existingProps) {
705 StringBuilder sb = new StringBuilder();
707 for (Property property : existingProps) {
708 if (property.name().equals(propName)) {
713 sb.append(property.name());
717 err().printMessage(Diagnostic.Kind.ERROR,
718 propName + " is not one of known properties: " + sb
724 private static String findPkgName(Element e) {
726 if (e.getKind() == ElementKind.PACKAGE) {
727 return ((PackageElement)e).getQualifiedName().toString();
729 e = e.getEnclosingElement();
733 private boolean generateFunctions(
734 Element clazz, StringWriter body, String className,
735 List<? extends Element> enclosedElements, List<String> functions
737 for (Element m : enclosedElements) {
738 if (m.getKind() != ElementKind.METHOD) {
741 ExecutableElement e = (ExecutableElement)m;
742 OnFunction onF = e.getAnnotation(OnFunction.class);
746 if (!e.getModifiers().contains(Modifier.STATIC)) {
748 Diagnostic.Kind.ERROR, "@OnFunction method needs to be static", e
752 if (e.getModifiers().contains(Modifier.PRIVATE)) {
754 Diagnostic.Kind.ERROR, "@OnFunction method cannot be private", e
758 if (e.getReturnType().getKind() != TypeKind.VOID) {
760 Diagnostic.Kind.ERROR, "@OnFunction method should return void", e
764 String n = e.getSimpleName().toString();
765 body.append("private void ").append(n).append("(Object data, Object ev) {\n");
766 body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
767 body.append(wrapParams(e, null, className, "ev", "data"));
772 functions.add(n + "__VLjava_lang_Object_2Ljava_lang_Object_2");
777 private boolean generateOnChange(Element clazz, Map<String,Collection<String>> propDeps,
778 Property[] properties, String className,
779 Map<String, Collection<String>> functionDeps
781 for (Element m : clazz.getEnclosedElements()) {
782 if (m.getKind() != ElementKind.METHOD) {
785 ExecutableElement e = (ExecutableElement) m;
786 OnPropertyChange onPC = e.getAnnotation(OnPropertyChange.class);
790 for (String pn : onPC.value()) {
791 if (findProperty(properties, pn) == null && findDerivedFrom(propDeps, pn).isEmpty()) {
792 err().printMessage(Diagnostic.Kind.ERROR, "No property named '" + pn + "' in the model");
796 if (!e.getModifiers().contains(Modifier.STATIC)) {
798 Diagnostic.Kind.ERROR, "@OnPropertyChange method needs to be static", e);
801 if (e.getModifiers().contains(Modifier.PRIVATE)) {
803 Diagnostic.Kind.ERROR, "@OnPropertyChange method cannot be private", e);
806 if (e.getReturnType().getKind() != TypeKind.VOID) {
808 Diagnostic.Kind.ERROR, "@OnPropertyChange method should return void", e);
811 String n = e.getSimpleName().toString();
814 for (String pn : onPC.value()) {
815 StringBuilder call = new StringBuilder();
816 call.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
817 call.append(wrapPropName(e, className, "name", pn));
820 Collection<String> change = functionDeps.get(pn);
821 if (change == null) {
822 change = new ArrayList<>();
823 functionDeps.put(pn, change);
825 change.add(call.toString());
826 for (String dpn : findDerivedFrom(propDeps, pn)) {
827 change = functionDeps.get(dpn);
828 if (change == null) {
829 change = new ArrayList<>();
830 functionDeps.put(dpn, change);
832 change.add(call.toString());
839 private boolean generateReceive(
840 Element clazz, StringWriter body, String className,
841 List<? extends Element> enclosedElements, List<String> functions
843 for (Element m : enclosedElements) {
844 if (m.getKind() != ElementKind.METHOD) {
847 ExecutableElement e = (ExecutableElement)m;
848 OnReceive onR = e.getAnnotation(OnReceive.class);
852 if (!e.getModifiers().contains(Modifier.STATIC)) {
854 Diagnostic.Kind.ERROR, "@OnReceive method needs to be static", e
858 if (e.getModifiers().contains(Modifier.PRIVATE)) {
860 Diagnostic.Kind.ERROR, "@OnReceive method cannot be private", e
864 if (e.getReturnType().getKind() != TypeKind.VOID) {
866 Diagnostic.Kind.ERROR, "@OnReceive method should return void", e
870 String modelClass = null;
871 boolean expectsList = false;
872 List<String> args = new ArrayList<>();
874 for (VariableElement ve : e.getParameters()) {
875 TypeMirror modelType = null;
876 if (ve.asType().toString().equals(className)) {
877 args.add(className + ".this");
878 } else if (isModel(ve.asType())) {
879 modelType = ve.asType();
880 } else if (ve.asType().getKind() == TypeKind.ARRAY) {
881 modelType = ((ArrayType)ve.asType()).getComponentType();
884 if (modelType != null) {
885 if (modelClass != null) {
886 err().printMessage(Diagnostic.Kind.ERROR, "There can be only one model class among arguments", e);
888 modelClass = modelType.toString();
898 if (modelClass == null) {
899 err().printMessage(Diagnostic.Kind.ERROR, "The method needs to have one @Model class as parameter", e);
901 String n = e.getSimpleName().toString();
902 body.append("public void ").append(n).append("(");
903 StringBuilder assembleURL = new StringBuilder();
906 for (String p : findParamNames(e, onR.url(), assembleURL)) {
908 body.append("String ").append(p);
912 body.append(") {\n");
913 body.append(" final Object[] result = { null };\n");
915 " class ProcessResult implements Runnable {\n" +
917 " public void run() {\n" +
918 " Object value = result[0];\n");
920 " " + modelClass + "[] arr;\n");
922 " if (value instanceof Object[]) {\n" +
923 " Object[] data = ((Object[])value);\n" +
924 " arr = new " + modelClass + "[data.length];\n" +
925 " for (int i = 0; i < data.length; i++) {\n" +
926 " arr[i] = new " + modelClass + "(data[i]);\n" +
929 " arr = new " + modelClass + "[1];\n" +
930 " arr[0] = new " + modelClass + "(value);\n" +
934 body.append(clazz.getSimpleName()).append(".").append(n).append("(");
936 for (String arg : args) {
947 body.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.loadJSON(\n ");
948 body.append(assembleURL);
949 body.append(", result, new ProcessResult()\n );\n");
950 // body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
951 // body.append(wrapParams(e, null, className, "ev", "data"));
952 // body.append(");\n");
958 private CharSequence wrapParams(
959 ExecutableElement ee, String id, String className, String evName, String dataName
961 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
962 StringBuilder params = new StringBuilder();
963 boolean first = true;
964 for (VariableElement ve : ee.getParameters()) {
969 String toCall = null;
970 if (ve.asType() == stringType) {
971 if (ve.getSimpleName().contentEquals("id")) {
972 params.append('"').append(id).append('"');
975 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toString(";
977 if (ve.asType().getKind() == TypeKind.DOUBLE) {
978 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toDouble(";
980 if (ve.asType().getKind() == TypeKind.INT) {
981 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toInt(";
983 if (dataName != null && ve.getSimpleName().contentEquals(dataName) && isModel(ve.asType())) {
984 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toModel(" + ve.asType() + ".class, ";
987 if (toCall != null) {
988 params.append(toCall);
989 if (dataName != null && ve.getSimpleName().contentEquals(dataName)) {
990 params.append(dataName);
991 params.append(", null");
993 if (evName == null) {
994 final StringBuilder sb = new StringBuilder();
995 sb.append("Unexpected string parameter name.");
996 if (dataName != null) {
997 sb.append(" Try \"").append(dataName).append("\"");
999 err().printMessage(Diagnostic.Kind.ERROR, sb.toString(), ee);
1001 params.append(evName);
1002 params.append(", \"");
1003 params.append(ve.getSimpleName().toString());
1004 params.append("\"");
1009 String rn = fqn(ve.asType(), ee);
1010 int last = rn.lastIndexOf('.');
1012 rn = rn.substring(last + 1);
1014 if (rn.equals(className)) {
1015 params.append(className).append(".this");
1018 err().printMessage(Diagnostic.Kind.ERROR,
1019 "@On method can only accept String named 'id' or " + className + " arguments",
1027 private CharSequence wrapPropName(
1028 ExecutableElement ee, String className, String propName, String propValue
1030 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
1031 StringBuilder params = new StringBuilder();
1032 boolean first = true;
1033 for (VariableElement ve : ee.getParameters()) {
1035 params.append(", ");
1038 if (ve.asType() == stringType) {
1039 if (propName != null && ve.getSimpleName().contentEquals(propName)) {
1040 params.append('"').append(propValue).append('"');
1042 err().printMessage(Diagnostic.Kind.ERROR, "Unexpected string parameter name. Try \"" + propName + "\".");
1046 String rn = fqn(ve.asType(), ee);
1047 int last = rn.lastIndexOf('.');
1049 rn = rn.substring(last + 1);
1051 if (rn.equals(className)) {
1052 params.append(className).append(".this");
1055 err().printMessage(Diagnostic.Kind.ERROR,
1056 "@OnPropertyChange method can only accept String or " + className + " arguments",
1062 private boolean isModel(TypeMirror tm) {
1063 final Element e = processingEnv.getTypeUtils().asElement(tm);
1067 for (Element ch : e.getEnclosedElements()) {
1068 if (ch.getKind() == ElementKind.METHOD) {
1069 ExecutableElement ee = (ExecutableElement)ch;
1070 if (ee.getParameters().isEmpty() && ee.getSimpleName().contentEquals("modelFor")) {
1075 return models.values().contains(e.getSimpleName().toString());
1078 private void writeStringArray(List<String> strings, Writer w) throws IOException {
1079 w.write("new String[] {\n");
1081 for (String n : strings) {
1086 w.write(" \"" + n + "\"");
1093 private void writeToString(Property[] props, Writer w) throws IOException {
1094 w.write(" public String toString() {\n");
1095 w.write(" StringBuilder sb = new StringBuilder();\n");
1096 w.write(" sb.append('{');\n");
1098 for (Property p : props) {
1100 w.append(" sb.append(\"" + p.name() + ": \");\n");
1101 w.append(" sb.append(org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toJSON(prop_");
1102 w.append(p.name()).append("));\n");
1103 sep = " sb.append(',');\n";
1105 w.write(" sb.append('}');\n");
1106 w.write(" return sb.toString();\n");
1109 private void writeClone(String className, Property[] props, Writer w) throws IOException {
1110 w.write(" public " + className + " clone() {\n");
1111 w.write(" " + className + " ret = new " + className + "();\n");
1112 for (Property p : props) {
1114 boolean isModel[] = { false };
1115 boolean isEnum[] = { false };
1116 checkType(p, isModel, isEnum);
1118 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ";\n");
1122 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ".clone();\n");
1125 w.write(" return ret;\n");
1129 private String inPckName(Element e) {
1130 StringBuilder sb = new StringBuilder();
1131 while (e.getKind() != ElementKind.PACKAGE) {
1132 if (sb.length() == 0) {
1133 sb.append(e.getSimpleName());
1136 sb.insert(0, e.getSimpleName());
1138 e = e.getEnclosingElement();
1140 return sb.toString();
1143 private String fqn(TypeMirror pt, Element relative) {
1144 if (pt.getKind() == TypeKind.ERROR) {
1145 final Elements eu = processingEnv.getElementUtils();
1146 PackageElement pckg = eu.getPackageOf(relative);
1147 return pckg.getQualifiedName() + "." + pt.toString();
1149 return pt.toString();
1152 private String checkType(Property p, boolean[] isModel, boolean[] isEnum) {
1155 ret = p.type().getName();
1156 } catch (MirroredTypeException ex) {
1157 TypeMirror tm = processingEnv.getTypeUtils().erasure(ex.getTypeMirror());
1158 final Element e = processingEnv.getTypeUtils().asElement(tm);
1159 final Model m = e == null ? null : e.getAnnotation(Model.class);
1161 ret = findPkgName(e) + '.' + m.className();
1163 models.put(e, m.className());
1165 ret = tm.toString();
1167 TypeMirror enm = processingEnv.getElementUtils().getTypeElement("java.lang.Enum").asType();
1168 enm = processingEnv.getTypeUtils().erasure(enm);
1169 isEnum[0] = processingEnv.getTypeUtils().isSubtype(tm, enm);
1174 private Iterable<String> findParamNames(Element e, String url, StringBuilder assembleURL) {
1175 List<String> params = new ArrayList<>();
1177 for (int pos = 0; ;) {
1178 int next = url.indexOf('{', pos);
1180 assembleURL.append('"')
1181 .append(url.substring(pos))
1185 int close = url.indexOf('}', next);
1187 err().printMessage(Diagnostic.Kind.ERROR, "Unbalanced '{' and '}' in " + url, e);
1190 final String paramName = url.substring(next + 1, close);
1191 params.add(paramName);
1192 assembleURL.append('"')
1193 .append(url.substring(pos, next))
1194 .append("\" + ").append(paramName).append(" + ");
1199 private static Property findProperty(Property[] properties, String propName) {
1200 for (Property p : properties) {
1201 if (propName.equals(p.name())) {
1208 private boolean isPrimitive(String type) {
1210 "int".equals(type) ||
1211 "double".equals(type) ||
1212 "long".equals(type) ||
1213 "short".equals(type) ||
1214 "byte".equals(type) ||
1215 "float".equals(type);
1218 private static Collection<String> findDerivedFrom(Map<String, Collection<String>> propsDeps, String derivedProp) {
1219 Set<String> names = new HashSet<>();
1220 for (Map.Entry<String, Collection<String>> e : propsDeps.entrySet()) {
1221 if (e.getValue().contains(derivedProp)) {
1222 names.add(e.getKey());