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.reflect.Method;
27 import java.util.ArrayList;
28 import java.util.Collection;
29 import java.util.Collections;
30 import java.util.HashMap;
31 import java.util.HashSet;
32 import java.util.LinkedHashSet;
33 import java.util.List;
36 import java.util.WeakHashMap;
37 import javax.annotation.processing.AbstractProcessor;
38 import javax.annotation.processing.Completion;
39 import javax.annotation.processing.Completions;
40 import javax.annotation.processing.ProcessingEnvironment;
41 import javax.annotation.processing.Processor;
42 import javax.annotation.processing.RoundEnvironment;
43 import javax.annotation.processing.SupportedAnnotationTypes;
44 import javax.lang.model.element.AnnotationMirror;
45 import javax.lang.model.element.AnnotationValue;
46 import javax.lang.model.element.Element;
47 import javax.lang.model.element.ElementKind;
48 import javax.lang.model.element.ExecutableElement;
49 import javax.lang.model.element.Modifier;
50 import javax.lang.model.element.PackageElement;
51 import javax.lang.model.element.TypeElement;
52 import javax.lang.model.element.VariableElement;
53 import javax.lang.model.type.ArrayType;
54 import javax.lang.model.type.MirroredTypeException;
55 import javax.lang.model.type.TypeKind;
56 import javax.lang.model.type.TypeMirror;
57 import javax.lang.model.util.Elements;
58 import javax.lang.model.util.Types;
59 import javax.tools.Diagnostic;
60 import javax.tools.FileObject;
61 import javax.tools.StandardLocation;
62 import org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty;
63 import org.apidesign.bck2brwsr.htmlpage.api.Model;
64 import org.apidesign.bck2brwsr.htmlpage.api.On;
65 import org.apidesign.bck2brwsr.htmlpage.api.OnFunction;
66 import org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange;
67 import org.apidesign.bck2brwsr.htmlpage.api.OnReceive;
68 import org.apidesign.bck2brwsr.htmlpage.api.Page;
69 import org.apidesign.bck2brwsr.htmlpage.api.Property;
70 import org.openide.util.lookup.ServiceProvider;
72 /** Annotation processor to process an XHTML page and generate appropriate
75 * @author Jaroslav Tulach <jtulach@netbeans.org>
77 @ServiceProvider(service=Processor.class)
78 @SupportedAnnotationTypes({
79 "org.apidesign.bck2brwsr.htmlpage.api.Model",
80 "org.apidesign.bck2brwsr.htmlpage.api.Page",
81 "org.apidesign.bck2brwsr.htmlpage.api.OnFunction",
82 "org.apidesign.bck2brwsr.htmlpage.api.OnReceive",
83 "org.apidesign.bck2brwsr.htmlpage.api.OnPropertyChange",
84 "org.apidesign.bck2brwsr.htmlpage.api.ComputedProperty",
85 "org.apidesign.bck2brwsr.htmlpage.api.On"
87 public final class PageProcessor extends AbstractProcessor {
88 private final Map<Element,String> models = new WeakHashMap<>();
89 private final Map<Element,Prprt[]> verify = new WeakHashMap<>();
91 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
93 for (Element e : roundEnv.getElementsAnnotatedWith(Model.class)) {
94 if (!processModel(e)) {
98 for (Element e : roundEnv.getElementsAnnotatedWith(Page.class)) {
99 if (!processPage(e)) {
103 if (roundEnv.processingOver()) {
105 for (Map.Entry<Element, Prprt[]> entry : verify.entrySet()) {
106 TypeElement te = (TypeElement)entry.getKey();
107 String fqn = processingEnv.getElementUtils().getBinaryName(te).toString();
108 Element finalElem = processingEnv.getElementUtils().getTypeElement(fqn);
109 if (finalElem == null) {
113 Model m = finalElem.getAnnotation(Model.class);
115 props = Prprt.wrap(processingEnv, finalElem, m.properties());
117 Page p = finalElem.getAnnotation(Page.class);
118 props = Prprt.wrap(processingEnv, finalElem, p.properties());
120 for (Prprt p : props) {
121 boolean[] isModel = { false };
122 boolean[] isEnum = { false };
123 boolean[] isPrimitive = { false };
124 String t = checkType(p, isModel, isEnum, isPrimitive);
128 if (isPrimitive[0]) {
134 if ("java.lang.String".equals(t)) {
137 error("The type " + t + " should be defined by @Model annotation", entry.getKey());
145 private InputStream openStream(String pkg, String name) throws IOException {
147 FileObject fo = processingEnv.getFiler().getResource(
148 StandardLocation.SOURCE_PATH, pkg, name);
149 return fo.openInputStream();
150 } catch (IOException ex) {
151 return processingEnv.getFiler().getResource(StandardLocation.CLASS_OUTPUT, pkg, name).openInputStream();
155 private void error(String msg, Element e) {
156 processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, msg, e);
159 private boolean processModel(Element e) {
161 Model m = e.getAnnotation(Model.class);
165 String pkg = findPkgName(e);
167 String className = m.className();
168 models.put(e, className);
170 StringWriter body = new StringWriter();
171 List<String> propsGetSet = new ArrayList<>();
172 List<String> functions = new ArrayList<>();
173 Map<String, Collection<String>> propsDeps = new HashMap<>();
174 Map<String, Collection<String>> functionDeps = new HashMap<>();
175 Prprt[] props = createProps(e, m.properties());
177 if (!generateComputedProperties(body, props, e.getEnclosedElements(), propsGetSet, propsDeps)) {
180 if (!generateOnChange(e, propsDeps, props, className, functionDeps)) {
183 if (!generateProperties(e, body, props, propsGetSet, propsDeps, functionDeps)) {
186 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
189 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
190 w = new OutputStreamWriter(java.openOutputStream());
192 w.append("package " + pkg + ";\n");
193 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
194 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
195 w.append("import org.apidesign.bck2brwsr.core.JavaScriptOnly;\n");
196 w.append("final class ").append(className).append(" implements Cloneable {\n");
197 w.append(" private boolean locked;\n");
198 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
199 w.append(body.toString());
200 w.append(" private static Class<" + inPckName(e) + "> modelFor() { return null; }\n");
201 w.append(" public ").append(className).append("() {\n");
202 w.append(" intKnckt();\n");
204 w.append(" private void intKnckt() {\n");
205 w.append(" ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(this, ");
206 writeStringArray(propsGetSet, w);
208 writeStringArray(functions, w);
211 w.append(" ").append(className).append("(Object json) {\n");
213 for (int i = 0; i < propsGetSet.size(); i += 4) {
214 Prprt p = findPrprt(props, propsGetSet.get(i));
220 w.append(" Object[] ret = new Object[" + values + "];\n");
221 w.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.extractJSON(json, new String[] {\n");
222 for (int i = 0; i < propsGetSet.size(); i += 4) {
223 Prprt p = findPrprt(props, propsGetSet.get(i));
227 w.append(" \"").append(propsGetSet.get(i)).append("\",\n");
229 w.append(" }, ret);\n");
230 for (int i = 0, cnt = 0, prop = 0; i < propsGetSet.size(); i += 4) {
231 final String pn = propsGetSet.get(i);
232 Prprt p = findPrprt(props, pn);
236 boolean[] isModel = { false };
237 boolean[] isEnum = { false };
238 boolean isPrimitive[] = { false };
239 String type = checkType(props[prop++], isModel, isEnum, isPrimitive);
241 w.append("if (ret[" + cnt + "] instanceof Object[]) {\n");
242 w.append(" for (Object e : ((Object[])ret[" + cnt + "])) {\n");
244 w.append(" this.prop_").append(pn).append(".add(new ");
245 w.append(type).append("(e));\n");
246 } else if (isEnum[0]) {
247 w.append(" this.prop_").append(pn);
249 w.append(type).append(".valueOf((String)e));\n");
251 if (isPrimitive(type)) {
252 w.append(" this.prop_").append(pn).append(".add(((Number)e).");
253 w.append(type).append("Value());\n");
255 w.append(" this.prop_").append(pn).append(".add((");
256 w.append(type).append(")e);\n");
263 w.append(" this.prop_").append(pn);
265 w.append(type).append(".valueOf((String)ret[" + cnt + "]);\n");
266 } else if (isPrimitive(type)) {
267 w.append(" this.prop_").append(pn);
268 w.append(" = ((Number)").append("ret[" + cnt + "]).");
269 w.append(type).append("Value();\n");
271 w.append(" this.prop_").append(pn);
272 w.append(" = (").append(type).append(')');
273 w.append("ret[" + cnt + "];\n");
278 w.append(" intKnckt();\n");
280 writeToString(props, w);
281 writeClone(className, props, w);
286 } catch (IOException ex) {
287 error("Can't create " + className + ".java", e);
293 private boolean processPage(Element e) {
295 Page p = e.getAnnotation(Page.class);
299 String pkg = findPkgName(e);
302 try (InputStream is = openStream(pkg, p.xhtml())) {
303 pp = ProcessPage.readPage(is);
305 } catch (IOException iOException) {
306 error("Can't read " + p.xhtml() + " as " + iOException.getMessage(), e);
311 String className = p.className();
312 if (className.isEmpty()) {
313 int indx = p.xhtml().indexOf('.');
314 className = p.xhtml().substring(0, indx);
317 StringWriter body = new StringWriter();
318 List<String> propsGetSet = new ArrayList<>();
319 List<String> functions = new ArrayList<>();
320 Map<String, Collection<String>> propsDeps = new HashMap<>();
321 Map<String, Collection<String>> functionDeps = new HashMap<>();
323 Prprt[] props = createProps(e, p.properties());
324 if (!generateComputedProperties(body, props, e.getEnclosedElements(), propsGetSet, propsDeps)) {
327 if (!generateOnChange(e, propsDeps, props, className, functionDeps)) {
330 if (!generateProperties(e, body, props, propsGetSet, propsDeps, functionDeps)) {
333 if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {
336 if (!generateReceive(e, body, className, e.getEnclosedElements(), functions)) {
340 FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);
341 w = new OutputStreamWriter(java.openOutputStream());
343 w.append("package " + pkg + ";\n");
344 w.append("import org.apidesign.bck2brwsr.htmlpage.api.*;\n");
345 w.append("import org.apidesign.bck2brwsr.htmlpage.KOList;\n");
346 w.append("final class ").append(className).append(" {\n");
347 w.append(" private boolean locked;\n");
348 if (!initializeOnClick(className, (TypeElement) e, w, pp)) {
351 if (pp != null) for (String id : pp.ids()) {
352 String tag = pp.tagNameForId(id);
353 String type = type(tag);
354 w.append(" ").append("public final ").
355 append(type).append(' ').append(cnstnt(id)).append(" = new ").
356 append(type).append("(\"").append(id).append("\");\n");
359 w.append(" private org.apidesign.bck2brwsr.htmlpage.Knockout ko;\n");
360 w.append(body.toString());
361 if (!propsGetSet.isEmpty()) {
362 w.write("public " + className + " applyBindings() {\n");
363 w.write(" ko = org.apidesign.bck2brwsr.htmlpage.Knockout.applyBindings(");
364 w.write(className + ".class, this, ");
365 writeStringArray(propsGetSet, w);
367 writeStringArray(functions, w);
368 w.write(");\n return this;\n}\n");
370 w.write("public void triggerEvent(Element e, OnEvent ev) {\n");
371 w.write(" org.apidesign.bck2brwsr.htmlpage.Knockout.triggerEvent(e.getId(), ev.getElementPropertyName());\n");
378 } catch (IOException ex) {
379 error("Can't create " + className + ".java", e);
385 private static String type(String tag) {
386 if (tag.equals("title")) {
389 if (tag.equals("button")) {
392 if (tag.equals("input")) {
395 if (tag.equals("canvas")) {
398 if (tag.equals("img")) {
404 private static String cnstnt(String id) {
405 return id.replace('.', '_').replace('-', '_');
408 private boolean initializeOnClick(
409 String className, TypeElement type, Writer w, ProcessPage pp
410 ) throws IOException {
412 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
413 { //for (Element clazz : pe.getEnclosedElements()) {
414 // if (clazz.getKind() != ElementKind.CLASS) {
417 w.append(" public ").append(className).append("() {\n");
418 StringBuilder dispatch = new StringBuilder();
420 for (Element method : type.getEnclosedElements()) {
421 On oc = method.getAnnotation(On.class);
423 for (String id : oc.id()) {
425 error("id = " + id + " not found in HTML page.", method);
429 if (pp.tagNameForId(id) == null) {
430 error("id = " + id + " does not exist in the HTML page. Found only " + pp.ids(), method);
434 ExecutableElement ee = (ExecutableElement)method;
435 CharSequence params = wrapParams(ee, id, className, "ev", null);
436 if (!ee.getModifiers().contains(Modifier.STATIC)) {
437 error("@On method has to be static", ee);
441 if (ee.getModifiers().contains(Modifier.PRIVATE)) {
442 error("@On method can't be private", ee);
446 w.append(" OnEvent." + oc.event()).append(".of(").append(cnstnt(id)).
447 append(").perform(new OnDispatch(" + dispatchCnt + "));\n");
450 append(" case ").append(dispatchCnt).append(": ").
451 append(type.getSimpleName().toString()).
452 append('.').append(ee.getSimpleName()).append("(").
454 append("); break;\n");
461 if (dispatchCnt > 0) {
462 w.append("class OnDispatch implements OnHandler {\n");
463 w.append(" private final int dispatch;\n");
464 w.append(" OnDispatch(int d) { dispatch = d; }\n");
465 w.append(" public void onEvent(Object ev) {\n");
466 w.append(" switch (dispatch) {\n");
479 public Iterable<? extends Completion> getCompletions(
480 Element element, AnnotationMirror annotation,
481 ExecutableElement member, String userText
483 if (!userText.startsWith("\"")) {
484 return Collections.emptyList();
487 Element cls = findClass(element);
488 Page p = cls.getAnnotation(Page.class);
489 String pkg = findPkgName(cls);
492 InputStream is = openStream(pkg, p.xhtml());
493 pp = ProcessPage.readPage(is);
495 } catch (IOException iOException) {
496 return Collections.emptyList();
499 List<Completion> cc = new ArrayList<>();
500 userText = userText.substring(1);
501 for (String id : pp.ids()) {
502 if (id.startsWith(userText)) {
503 cc.add(Completions.of("\"" + id + "\"", id));
509 private static Element findClass(Element e) {
513 Page p = e.getAnnotation(Page.class);
517 return e.getEnclosingElement();
520 private boolean generateProperties(
522 Writer w, Prprt[] properties,
523 Collection<String> props,
524 Map<String,Collection<String>> deps,
525 Map<String,Collection<String>> functionDeps
526 ) throws IOException {
528 for (Prprt p : properties) {
530 tn = typeName(where, p);
531 String[] gs = toGetSet(p.name(), tn, p.array());
534 w.write("private KOList<" + tn + "> prop_" + p.name() + " = new KOList<" + tn + ">(\""
536 Collection<String> dependants = deps.get(p.name());
537 if (dependants != null) {
538 for (String depProp : dependants) {
547 dependants = functionDeps.get(p.name());
548 if (dependants != null) {
549 w.write(".onChange(new Runnable() { public void run() {\n");
550 for (String call : dependants) {
557 w.write("public java.util.List<" + tn + "> " + gs[0] + "() {\n");
558 w.write(" if (locked) throw new IllegalStateException();\n");
559 w.write(" prop_" + p.name() + ".assign(ko);\n");
560 w.write(" return prop_" + p.name() + ";\n");
563 w.write("private " + tn + " prop_" + p.name() + ";\n");
564 w.write("public " + tn + " " + gs[0] + "() {\n");
565 w.write(" if (locked) throw new IllegalStateException();\n");
566 w.write(" return prop_" + p.name() + ";\n");
568 w.write("public void " + gs[1] + "(" + tn + " v) {\n");
569 w.write(" if (locked) throw new IllegalStateException();\n");
570 w.write(" prop_" + p.name() + " = v;\n");
571 w.write(" if (ko != null) {\n");
572 w.write(" ko.valueHasMutated(\"" + p.name() + "\");\n");
573 Collection<String> dependants = deps.get(p.name());
574 if (dependants != null) {
575 for (String depProp : dependants) {
576 w.write(" ko.valueHasMutated(\"" + depProp + "\");\n");
580 dependants = functionDeps.get(p.name());
581 if (dependants != null) {
582 for (String call : dependants) {
597 private boolean generateComputedProperties(
598 Writer w, Prprt[] fixedProps,
599 Collection<? extends Element> arr, Collection<String> props,
600 Map<String,Collection<String>> deps
601 ) throws IOException {
603 for (Element e : arr) {
604 if (e.getKind() != ElementKind.METHOD) {
607 if (e.getAnnotation(ComputedProperty.class) == null) {
610 ExecutableElement ee = (ExecutableElement)e;
611 final TypeMirror rt = ee.getReturnType();
612 final Types tu = processingEnv.getTypeUtils();
613 TypeMirror ert = tu.erasure(rt);
614 String tn = fqn(ert, ee);
615 boolean array = false;
616 if (tn.equals("java.util.List")) {
620 final String sn = ee.getSimpleName().toString();
621 String[] gs = toGetSet(sn, tn, array);
623 w.write("public " + tn + " " + gs[0] + "() {\n");
624 w.write(" if (locked) throw new IllegalStateException();\n");
626 for (VariableElement pe : ee.getParameters()) {
627 final String dn = pe.getSimpleName().toString();
629 if (!verifyPropName(pe, dn, fixedProps)) {
633 final String dt = fqn(pe.asType(), ee);
634 String[] call = toGetSet(dn, dt, false);
635 w.write(" " + dt + " arg" + (++arg) + " = ");
636 w.write(call[0] + "();\n");
638 Collection<String> depends = deps.get(dn);
639 if (depends == null) {
640 depends = new LinkedHashSet<>();
641 deps.put(dn, depends);
646 w.write(" locked = true;\n");
647 w.write(" return " + fqn(ee.getEnclosingElement().asType(), ee) + '.' + e.getSimpleName() + "(");
649 for (int i = 1; i <= arg; i++) {
655 w.write(" } finally {\n");
656 w.write(" locked = false;\n");
660 props.add(e.getSimpleName().toString());
669 private static String[] toGetSet(String name, String type, boolean array) {
670 String n = Character.toUpperCase(name.charAt(0)) + name.substring(1);
671 String bck2brwsrType = "L" + type.replace('.', '_') + "_2";
672 if ("int".equals(type)) {
675 if ("double".equals(type)) {
679 if ("boolean".equals(type)) {
683 final String nu = n.replace('.', '_');
685 return new String[] {
688 "get" + nu + "__Ljava_util_List_2",
695 pref + nu + "__" + bck2brwsrType,
696 "set" + nu + "__V" + bck2brwsrType
700 private String typeName(Element where, Prprt p) {
702 boolean[] isModel = { false };
703 boolean[] isEnum = { false };
704 boolean isPrimitive[] = { false };
705 ret = checkType(p, isModel, isEnum, isPrimitive);
707 String bt = findBoxedType(ret);
715 private static String findBoxedType(String ret) {
716 if (ret.equals("boolean")) {
717 return Boolean.class.getName();
719 if (ret.equals("byte")) {
720 return Byte.class.getName();
722 if (ret.equals("short")) {
723 return Short.class.getName();
725 if (ret.equals("char")) {
726 return Character.class.getName();
728 if (ret.equals("int")) {
729 return Integer.class.getName();
731 if (ret.equals("long")) {
732 return Long.class.getName();
734 if (ret.equals("float")) {
735 return Float.class.getName();
737 if (ret.equals("double")) {
738 return Double.class.getName();
743 private boolean verifyPropName(Element e, String propName, Prprt[] existingProps) {
744 StringBuilder sb = new StringBuilder();
746 for (Prprt Prprt : existingProps) {
747 if (Prprt.name().equals(propName)) {
752 sb.append(Prprt.name());
757 propName + " is not one of known properties: " + sb
763 private static String findPkgName(Element e) {
765 if (e.getKind() == ElementKind.PACKAGE) {
766 return ((PackageElement)e).getQualifiedName().toString();
768 e = e.getEnclosingElement();
772 private boolean generateFunctions(
773 Element clazz, StringWriter body, String className,
774 List<? extends Element> enclosedElements, List<String> functions
776 for (Element m : enclosedElements) {
777 if (m.getKind() != ElementKind.METHOD) {
780 ExecutableElement e = (ExecutableElement)m;
781 OnFunction onF = e.getAnnotation(OnFunction.class);
785 if (!e.getModifiers().contains(Modifier.STATIC)) {
786 error("@OnFunction method needs to be static", e);
789 if (e.getModifiers().contains(Modifier.PRIVATE)) {
790 error("@OnFunction method cannot be private", e);
793 if (e.getReturnType().getKind() != TypeKind.VOID) {
794 error("@OnFunction method should return void", e);
797 String n = e.getSimpleName().toString();
798 body.append("private void ").append(n).append("(Object data, Object ev) {\n");
799 body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
800 body.append(wrapParams(e, null, className, "ev", "data"));
805 functions.add(n + "__VLjava_lang_Object_2Ljava_lang_Object_2");
810 private boolean generateOnChange(Element clazz, Map<String,Collection<String>> propDeps,
811 Prprt[] properties, String className,
812 Map<String, Collection<String>> functionDeps
814 for (Element m : clazz.getEnclosedElements()) {
815 if (m.getKind() != ElementKind.METHOD) {
818 ExecutableElement e = (ExecutableElement) m;
819 OnPropertyChange onPC = e.getAnnotation(OnPropertyChange.class);
823 for (String pn : onPC.value()) {
824 if (findPrprt(properties, pn) == null && findDerivedFrom(propDeps, pn).isEmpty()) {
825 error("No Prprt named '" + pn + "' in the model", clazz);
829 if (!e.getModifiers().contains(Modifier.STATIC)) {
830 error("@OnPrprtChange method needs to be static", e);
833 if (e.getModifiers().contains(Modifier.PRIVATE)) {
834 error("@OnPrprtChange method cannot be private", e);
837 if (e.getReturnType().getKind() != TypeKind.VOID) {
838 error("@OnPrprtChange method should return void", e);
841 String n = e.getSimpleName().toString();
844 for (String pn : onPC.value()) {
845 StringBuilder call = new StringBuilder();
846 call.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
847 call.append(wrapPropName(e, className, "name", pn));
850 Collection<String> change = functionDeps.get(pn);
851 if (change == null) {
852 change = new ArrayList<>();
853 functionDeps.put(pn, change);
855 change.add(call.toString());
856 for (String dpn : findDerivedFrom(propDeps, pn)) {
857 change = functionDeps.get(dpn);
858 if (change == null) {
859 change = new ArrayList<>();
860 functionDeps.put(dpn, change);
862 change.add(call.toString());
869 private boolean generateReceive(
870 Element clazz, StringWriter body, String className,
871 List<? extends Element> enclosedElements, List<String> functions
873 for (Element m : enclosedElements) {
874 if (m.getKind() != ElementKind.METHOD) {
877 ExecutableElement e = (ExecutableElement)m;
878 OnReceive onR = e.getAnnotation(OnReceive.class);
882 if (!e.getModifiers().contains(Modifier.STATIC)) {
883 error("@OnReceive method needs to be static", e);
886 if (e.getModifiers().contains(Modifier.PRIVATE)) {
887 error("@OnReceive method cannot be private", e);
890 if (e.getReturnType().getKind() != TypeKind.VOID) {
891 error("@OnReceive method should return void", e);
894 String modelClass = null;
895 boolean expectsList = false;
896 List<String> args = new ArrayList<>();
898 for (VariableElement ve : e.getParameters()) {
899 TypeMirror modelType = null;
900 if (ve.asType().toString().equals(className)) {
901 args.add(className + ".this");
902 } else if (isModel(ve.asType())) {
903 modelType = ve.asType();
904 } else if (ve.asType().getKind() == TypeKind.ARRAY) {
905 modelType = ((ArrayType)ve.asType()).getComponentType();
908 if (modelType != null) {
909 if (modelClass != null) {
910 error("There can be only one model class among arguments", e);
912 modelClass = modelType.toString();
922 if (modelClass == null) {
923 error("The method needs to have one @Model class as parameter", e);
925 String n = e.getSimpleName().toString();
926 body.append("public void ").append(n).append("(");
927 StringBuilder assembleURL = new StringBuilder();
928 String jsonpVarName = null;
931 boolean skipJSONP = onR.jsonp().isEmpty();
932 for (String p : findParamNames(e, onR.url(), assembleURL)) {
933 if (!skipJSONP && p.equals(onR.jsonp())) {
939 body.append("String ").append(p);
944 "Name of jsonp attribute ('" + onR.jsonp() +
945 "') is not used in url attribute '" + onR.url() + "'", e
949 body.append(") {\n");
950 body.append(" final Object[] result = { null };\n");
952 " class ProcessResult implements Runnable {\n" +
954 " public void run() {\n" +
955 " Object value = result[0];\n");
957 " " + modelClass + "[] arr;\n");
959 " if (value instanceof Object[]) {\n" +
960 " Object[] data = ((Object[])value);\n" +
961 " arr = new " + modelClass + "[data.length];\n" +
962 " for (int i = 0; i < data.length; i++) {\n" +
963 " arr[i] = new " + modelClass + "(data[i]);\n" +
966 " arr = new " + modelClass + "[1];\n" +
967 " arr[0] = new " + modelClass + "(value);\n" +
971 body.append(clazz.getSimpleName()).append(".").append(n).append("(");
973 for (String arg : args) {
984 body.append(" ProcessResult pr = new ProcessResult();\n");
985 if (jsonpVarName != null) {
986 body.append(" String ").append(jsonpVarName).
987 append(" = org.apidesign.bck2brwsr.htmlpage.ConvertTypes.createJSONP(result, pr);\n");
989 body.append(" org.apidesign.bck2brwsr.htmlpage.ConvertTypes.loadJSON(\n ");
990 body.append(assembleURL);
991 body.append(", result, pr, ").append(jsonpVarName).append("\n );\n");
992 // body.append(" ").append(clazz.getSimpleName()).append(".").append(n).append("(");
993 // body.append(wrapParams(e, null, className, "ev", "data"));
994 // body.append(");\n");
1000 private CharSequence wrapParams(
1001 ExecutableElement ee, String id, String className, String evName, String dataName
1003 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
1004 StringBuilder params = new StringBuilder();
1005 boolean first = true;
1006 for (VariableElement ve : ee.getParameters()) {
1008 params.append(", ");
1011 String toCall = null;
1012 if (ve.asType() == stringType) {
1013 if (ve.getSimpleName().contentEquals("id")) {
1014 params.append('"').append(id).append('"');
1017 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toString(";
1019 if (ve.asType().getKind() == TypeKind.DOUBLE) {
1020 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toDouble(";
1022 if (ve.asType().getKind() == TypeKind.INT) {
1023 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toInt(";
1025 if (dataName != null && ve.getSimpleName().contentEquals(dataName) && isModel(ve.asType())) {
1026 toCall = "org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toModel(" + ve.asType() + ".class, ";
1029 if (toCall != null) {
1030 params.append(toCall);
1031 if (dataName != null && ve.getSimpleName().contentEquals(dataName)) {
1032 params.append(dataName);
1033 params.append(", null");
1035 if (evName == null) {
1036 final StringBuilder sb = new StringBuilder();
1037 sb.append("Unexpected string parameter name.");
1038 if (dataName != null) {
1039 sb.append(" Try \"").append(dataName).append("\"");
1041 error(sb.toString(), ee);
1043 params.append(evName);
1044 params.append(", \"");
1045 params.append(ve.getSimpleName().toString());
1046 params.append("\"");
1051 String rn = fqn(ve.asType(), ee);
1052 int last = rn.lastIndexOf('.');
1054 rn = rn.substring(last + 1);
1056 if (rn.equals(className)) {
1057 params.append(className).append(".this");
1061 "@On method can only accept String named 'id' or " + className + " arguments",
1069 private CharSequence wrapPropName(
1070 ExecutableElement ee, String className, String propName, String propValue
1072 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();
1073 StringBuilder params = new StringBuilder();
1074 boolean first = true;
1075 for (VariableElement ve : ee.getParameters()) {
1077 params.append(", ");
1080 if (ve.asType() == stringType) {
1081 if (propName != null && ve.getSimpleName().contentEquals(propName)) {
1082 params.append('"').append(propValue).append('"');
1084 error("Unexpected string parameter name. Try \"" + propName + "\".", ee);
1088 String rn = fqn(ve.asType(), ee);
1089 int last = rn.lastIndexOf('.');
1091 rn = rn.substring(last + 1);
1093 if (rn.equals(className)) {
1094 params.append(className).append(".this");
1098 "@OnPrprtChange method can only accept String or " + className + " arguments",
1104 private boolean isModel(TypeMirror tm) {
1105 final Element e = processingEnv.getTypeUtils().asElement(tm);
1109 for (Element ch : e.getEnclosedElements()) {
1110 if (ch.getKind() == ElementKind.METHOD) {
1111 ExecutableElement ee = (ExecutableElement)ch;
1112 if (ee.getParameters().isEmpty() && ee.getSimpleName().contentEquals("modelFor")) {
1117 return models.values().contains(e.getSimpleName().toString());
1120 private void writeStringArray(List<String> strings, Writer w) throws IOException {
1121 w.write("new String[] {\n");
1123 for (String n : strings) {
1128 w.write(" \"" + n + "\"");
1135 private void writeToString(Prprt[] props, Writer w) throws IOException {
1136 w.write(" public String toString() {\n");
1137 w.write(" StringBuilder sb = new StringBuilder();\n");
1138 w.write(" sb.append('{');\n");
1140 for (Prprt p : props) {
1142 w.append(" sb.append(\"" + p.name() + ": \");\n");
1143 w.append(" sb.append(org.apidesign.bck2brwsr.htmlpage.ConvertTypes.toJSON(prop_");
1144 w.append(p.name()).append("));\n");
1145 sep = " sb.append(',');\n";
1147 w.write(" sb.append('}');\n");
1148 w.write(" return sb.toString();\n");
1151 private void writeClone(String className, Prprt[] props, Writer w) throws IOException {
1152 w.write(" public " + className + " clone() {\n");
1153 w.write(" " + className + " ret = new " + className + "();\n");
1154 for (Prprt p : props) {
1156 boolean isModel[] = { false };
1157 boolean isEnum[] = { false };
1158 boolean isPrimitive[] = { false };
1159 checkType(p, isModel, isEnum, isPrimitive);
1161 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ";\n");
1164 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ".clone();\n");
1166 w.write(" ret.prop_" + p.name() + " = prop_" + p.name() + ".clone();\n");
1170 w.write(" return ret;\n");
1174 private String inPckName(Element e) {
1175 StringBuilder sb = new StringBuilder();
1176 while (e.getKind() != ElementKind.PACKAGE) {
1177 if (sb.length() == 0) {
1178 sb.append(e.getSimpleName());
1181 sb.insert(0, e.getSimpleName());
1183 e = e.getEnclosingElement();
1185 return sb.toString();
1188 private String fqn(TypeMirror pt, Element relative) {
1189 if (pt.getKind() == TypeKind.ERROR) {
1190 final Elements eu = processingEnv.getElementUtils();
1191 PackageElement pckg = eu.getPackageOf(relative);
1192 return pckg.getQualifiedName() + "." + pt.toString();
1194 return pt.toString();
1197 private String checkType(Prprt p, boolean[] isModel, boolean[] isEnum, boolean[] isPrimitive) {
1200 String ret = p.typeName(processingEnv);
1201 TypeElement e = processingEnv.getElementUtils().getTypeElement(ret);
1205 isPrimitive[0] = false;
1209 } catch (MirroredTypeException ex) {
1210 tm = ex.getTypeMirror();
1212 tm = processingEnv.getTypeUtils().erasure(tm);
1213 isPrimitive[0] = tm.getKind().isPrimitive();
1214 final Element e = processingEnv.getTypeUtils().asElement(tm);
1215 final Model m = e == null ? null : e.getAnnotation(Model.class);
1219 ret = findPkgName(e) + '.' + m.className();
1221 models.put(e, m.className());
1222 } else if (findModelForMthd(e)) {
1223 ret = ((TypeElement)e).getQualifiedName().toString();
1226 ret = tm.toString();
1228 TypeMirror enm = processingEnv.getElementUtils().getTypeElement("java.lang.Enum").asType();
1229 enm = processingEnv.getTypeUtils().erasure(enm);
1230 isEnum[0] = processingEnv.getTypeUtils().isSubtype(tm, enm);
1234 private static boolean findModelForMthd(Element clazz) {
1235 if (clazz == null) {
1238 for (Element e : clazz.getEnclosedElements()) {
1239 if (e.getKind() == ElementKind.METHOD) {
1240 ExecutableElement ee = (ExecutableElement)e;
1242 ee.getSimpleName().contentEquals("modelFor") &&
1243 ee.getParameters().isEmpty()
1252 private Iterable<String> findParamNames(Element e, String url, StringBuilder assembleURL) {
1253 List<String> params = new ArrayList<>();
1255 for (int pos = 0; ;) {
1256 int next = url.indexOf('{', pos);
1258 assembleURL.append('"')
1259 .append(url.substring(pos))
1263 int close = url.indexOf('}', next);
1265 error("Unbalanced '{' and '}' in " + url, e);
1268 final String paramName = url.substring(next + 1, close);
1269 params.add(paramName);
1270 assembleURL.append('"')
1271 .append(url.substring(pos, next))
1272 .append("\" + ").append(paramName).append(" + ");
1277 private static Prprt findPrprt(Prprt[] properties, String propName) {
1278 for (Prprt p : properties) {
1279 if (propName.equals(p.name())) {
1286 private boolean isPrimitive(String type) {
1288 "int".equals(type) ||
1289 "double".equals(type) ||
1290 "long".equals(type) ||
1291 "short".equals(type) ||
1292 "byte".equals(type) ||
1293 "float".equals(type);
1296 private static Collection<String> findDerivedFrom(Map<String, Collection<String>> propsDeps, String derivedProp) {
1297 Set<String> names = new HashSet<>();
1298 for (Map.Entry<String, Collection<String>> e : propsDeps.entrySet()) {
1299 if (e.getValue().contains(derivedProp)) {
1300 names.add(e.getKey());
1306 private Prprt[] createProps(Element e, Property[] arr) {
1307 Prprt[] ret = Prprt.wrap(processingEnv, e, arr);
1308 Prprt[] prev = verify.put(e, ret);
1310 error("Two sets of properties for ", e);
1315 private static class Prprt {
1316 private final Element e;
1317 private final AnnotationMirror tm;
1318 private final Property p;
1320 public Prprt(Element e, AnnotationMirror tm, Property p) {
1334 String typeName(ProcessingEnvironment env) {
1336 return p.type().getName();
1337 } catch (AnnotationTypeMismatchException ex) {
1338 for (Object v : getAnnoValues(env)) {
1339 String s = v.toString().replace(" ", "");
1340 if (s.startsWith("type=") && s.endsWith(".class")) {
1341 return s.substring(5, s.length() - 6);
1349 static Prprt[] wrap(ProcessingEnvironment pe, Element e, Property[] arr) {
1350 if (arr.length == 0) {
1351 return new Prprt[0];
1354 if (e.getKind() != ElementKind.CLASS) {
1355 throw new IllegalStateException("" + e.getKind());
1357 TypeElement te = (TypeElement)e;
1358 List<? extends AnnotationValue> val = null;
1359 for (AnnotationMirror an : te.getAnnotationMirrors()) {
1360 for (Map.Entry<? extends ExecutableElement, ? extends AnnotationValue> entry : an.getElementValues().entrySet()) {
1361 if (entry.getKey().getSimpleName().contentEquals("properties")) {
1362 val = (List)entry.getValue().getValue();
1367 if (val == null || val.size() != arr.length) {
1368 pe.getMessager().printMessage(Diagnostic.Kind.ERROR, "" + val, e);
1369 return new Prprt[0];
1371 Prprt[] ret = new Prprt[arr.length];
1372 BIG: for (int i = 0; i < ret.length; i++) {
1373 AnnotationMirror am = (AnnotationMirror)val.get(i).getValue();
1374 ret[i] = new Prprt(e, am, arr[i]);
1380 private List<? extends Object> getAnnoValues(ProcessingEnvironment pe) {
1382 Class<?> trees = Class.forName("com.sun.tools.javac.api.JavacTrees");
1383 Method m = trees.getMethod("instance", ProcessingEnvironment.class);
1384 Object instance = m.invoke(null, pe);
1385 m = instance.getClass().getMethod("getPath", Element.class, AnnotationMirror.class);
1386 Object path = m.invoke(instance, e, tm);
1387 m = path.getClass().getMethod("getLeaf");
1388 Object leaf = m.invoke(path);
1389 m = leaf.getClass().getMethod("getArguments");
1390 return (List)m.invoke(leaf);
1391 } catch (Exception ex) {
1392 return Collections.emptyList();