hg/html~html4j: json/src/main/java/org/netbeans/html/json/impl/ModelProcessor.java@f18b6cc923d8

     1 /**

     2  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.

     3  *

     4  * Copyright 2013-2014 Oracle and/or its affiliates. All rights reserved.

     5  *

     6  * Oracle and Java are registered trademarks of Oracle and/or its affiliates.

     7  * Other names may be trademarks of their respective owners.

     8  *

     9  * The contents of this file are subject to the terms of either the GNU

    10  * General Public License Version 2 only ("GPL") or the Common

    11  * Development and Distribution License("CDDL") (collectively, the

    12  * "License"). You may not use this file except in compliance with the

    13  * License. You can obtain a copy of the License at

    14  * http://www.netbeans.org/cddl-gplv2.html

    15  * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the

    16  * specific language governing permissions and limitations under the

    17  * License.  When distributing the software, include this License Header

    18  * Notice in each file and include the License file at

    19  * nbbuild/licenses/CDDL-GPL-2-CP.  Oracle designates this

    20  * particular file as subject to the "Classpath" exception as provided

    21  * by Oracle in the GPL Version 2 section of the License file that

    22  * accompanied this code. If applicable, add the following below the

    23  * License Header, with the fields enclosed by brackets [] replaced by

    24  * your own identifying information:

    25  * "Portions Copyrighted [year] [name of copyright owner]"

    26  *

    27  * Contributor(s):

    28  *

    29  * The Original Software is NetBeans. The Initial Developer of the Original

    30  * Software is Oracle. Portions Copyright 2013-2014 Oracle. All Rights Reserved.

    31  *

    32  * If you wish your version of this file to be governed by only the CDDL

    33  * or only the GPL Version 2, indicate your decision by adding

    34  * "[Contributor] elects to include this software in this distribution

    35  * under the [CDDL or GPL Version 2] license." If you do not indicate a

    36  * single choice of license, a recipient has the option to distribute

    37  * your version of this file under either the CDDL, the GPL Version 2 or

    38  * to extend the choice of license to its licensees as provided above.

    39  * However, if you add GPL Version 2 code and therefore, elected the GPL

    40  * Version 2 license, then the option applies only if the new code is

    41  * made subject to such option by the copyright holder.

    42  */

    43 package org.netbeans.html.json.impl;

    45 import java.io.IOException;

    46 import java.io.OutputStreamWriter;

    47 import java.io.StringWriter;

    48 import java.io.Writer;

    49 import java.lang.annotation.AnnotationTypeMismatchException;

    50 import java.lang.annotation.IncompleteAnnotationException;

    51 import java.lang.reflect.Method;

    52 import java.util.ArrayList;

    53 import java.util.Arrays;

    54 import java.util.Collection;

    55 import java.util.Collections;

    56 import java.util.HashMap;

    57 import java.util.HashSet;

    58 import java.util.LinkedHashSet;

    59 import java.util.List;

    60 import java.util.Map;

    61 import java.util.ResourceBundle;

    62 import java.util.Set;

    63 import java.util.WeakHashMap;

    64 import java.util.logging.Level;

    65 import java.util.logging.Logger;

    66 import javax.annotation.processing.AbstractProcessor;

    67 import javax.annotation.processing.Completion;

    68 import javax.annotation.processing.Completions;

    69 import javax.annotation.processing.ProcessingEnvironment;

    70 import javax.annotation.processing.Processor;

    71 import javax.annotation.processing.RoundEnvironment;

    72 import javax.annotation.processing.SupportedAnnotationTypes;

    73 import javax.annotation.processing.SupportedSourceVersion;

    74 import javax.lang.model.SourceVersion;

    75 import javax.lang.model.element.AnnotationMirror;

    76 import javax.lang.model.element.AnnotationValue;

    77 import javax.lang.model.element.Element;

    78 import javax.lang.model.element.ElementKind;

    79 import javax.lang.model.element.ExecutableElement;

    80 import javax.lang.model.element.Modifier;

    81 import javax.lang.model.element.PackageElement;

    82 import javax.lang.model.element.TypeElement;

    83 import javax.lang.model.element.VariableElement;

    84 import javax.lang.model.type.ArrayType;

    85 import javax.lang.model.type.DeclaredType;

    86 import javax.lang.model.type.MirroredTypeException;

    87 import javax.lang.model.type.TypeKind;

    88 import javax.lang.model.type.TypeMirror;

    89 import javax.lang.model.util.Elements;

    90 import javax.lang.model.util.Types;

    91 import javax.tools.Diagnostic;

    92 import javax.tools.FileObject;

    93 import net.java.html.json.ComputedProperty;

    94 import net.java.html.json.Function;

    95 import net.java.html.json.Model;

    96 import net.java.html.json.ModelOperation;

    97 import net.java.html.json.OnPropertyChange;

    98 import net.java.html.json.OnReceive;

    99 import net.java.html.json.Property;

   100 import org.openide.util.lookup.ServiceProvider;

   102 /** Annotation processor to process {@link Model @Model} annotations and

   103  * generate appropriate model classes.

   104  *

   105  * @author Jaroslav Tulach

   106  */

   107 @ServiceProvider(service=Processor.class)

   108 @SupportedSourceVersion(SourceVersion.RELEASE_6)

   109 @SupportedAnnotationTypes({

   110     "net.java.html.json.Model",

   111     "net.java.html.json.ModelOperation",

   112     "net.java.html.json.Function",

   113     "net.java.html.json.OnReceive",

   114     "net.java.html.json.OnPropertyChange",

   115     "net.java.html.json.ComputedProperty",

   116     "net.java.html.json.Property"

   117 })

   118 public final class ModelProcessor extends AbstractProcessor {

   119     private static final Logger LOG = Logger.getLogger(ModelProcessor.class.getName());

   120     private final Map<Element,String> models = new WeakHashMap<Element,String>();

   121     private final Map<Element,Prprt[]> verify = new WeakHashMap<Element,Prprt[]>();

   122     @Override

   123     public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {

   124         boolean ok = true;

   125         for (Element e : roundEnv.getElementsAnnotatedWith(Model.class)) {

   126             if (!processModel(e)) {

   127                 ok = false;

   128             }

   129         }

   130         if (roundEnv.processingOver()) {

   131             models.clear();

   132             for (Map.Entry<Element, Prprt[]> entry : verify.entrySet()) {

   133                 TypeElement te = (TypeElement)entry.getKey();

   134                 String fqn = te.getQualifiedName().toString();

   135                 Element finalElem = processingEnv.getElementUtils().getTypeElement(fqn);

   136                 if (finalElem == null) {

   137                     continue;

   138                 }

   139                 Prprt[] props;

   140                 Model m = finalElem.getAnnotation(Model.class);

   141                 if (m == null) {

   142                     continue;

   143                 }

   144                 props = Prprt.wrap(processingEnv, finalElem, m.properties());

   145                 for (Prprt p : props) {

   146                     boolean[] isModel = { false };

   147                     boolean[] isEnum = { false };

   148                     boolean[] isPrimitive = { false };

   149                     String t = checkType(p, isModel, isEnum, isPrimitive);

   150                     if (isEnum[0]) {

   151                         continue;

   152                     }

   153                     if (isPrimitive[0]) {

   154                         continue;

   155                     }

   156                     if (isModel[0]) {

   157                         continue;

   158                     }

   159                     if ("java.lang.String".equals(t)) {

   160                         continue;

   161                     }

   162                     error("The type " + t + " should be defined by @Model annotation", entry.getKey());

   163                 }

   164             }

   165             verify.clear();

   166         }

   167         return ok;

   168     }

   170     private void error(String msg, Element e) {

   171         processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, msg, e);

   172     }

   174     private boolean processModel(Element e) {

   175         boolean ok = true;

   176         Model m = e.getAnnotation(Model.class);

   177         if (m == null) {

   178             return true;

   179         }

   180         String pkg = findPkgName(e);

   181         Writer w;

   182         String className = m.className();

   183         models.put(e, className);

   184         try {

   185             StringWriter body = new StringWriter();

   186             StringBuilder onReceiveType = new StringBuilder();

   187             List<GetSet> propsGetSet = new ArrayList<GetSet>();

   188             List<Object> functions = new ArrayList<Object>();

   189             Map<String, Collection<String[]>> propsDeps = new HashMap<String, Collection<String[]>>();

   190             Map<String, Collection<String>> functionDeps = new HashMap<String, Collection<String>>();

   191             Prprt[] props = createProps(e, m.properties());

   192             final String builderPrefix = findBuilderPrefix(e, m);

   194             if (!generateComputedProperties(className, body, props, e.getEnclosedElements(), propsGetSet, propsDeps)) {

   195                 ok = false;

   196             }

   197             if (!generateOnChange(e, propsDeps, props, className, functionDeps)) {

   198                 ok = false;

   199             }

   200             if (!generateProperties(e, builderPrefix, body, className, props, propsGetSet, propsDeps, functionDeps)) {

   201                 ok = false;

   202             }

   203             if (!generateFunctions(e, body, className, e.getEnclosedElements(), functions)) {

   204                 ok = false;

   205             }

   206             int functionsCount = functions.size() / 2;

   207             for (int i = 0; i < functions.size(); i += 2) {

   208                 for (Prprt p : props) {

   209                     if (p.name().equals(functions.get(i))) {

   210                         error("Function cannot have the name of an existing property", e);

   211                         ok = false;

   212                     }

   213                 }

   214             }

   215             if (!generateReceive(e, body, className, e.getEnclosedElements(), onReceiveType)) {

   216                 ok = false;

   217             }

   218             if (!generateOperation(e, body, className, e.getEnclosedElements(), functions)) {

   219                 ok = false;

   220             }

   221             FileObject java = processingEnv.getFiler().createSourceFile(pkg + '.' + className, e);

   222             w = new OutputStreamWriter(java.openOutputStream());

   223             try {

   224                 w.append("package " + pkg + ";\n");

   225                 w.append("import net.java.html.json.*;\n");

   226                 final String inPckName = inPckName(e, false);

   227                 w.append("/** Generated for {@link ").append(inPckName).append("}*/\n");

   228                 w.append("public final class ").append(className).append(" implements Cloneable {\n");

   229                 w.append("  private static Class<").append(inPckName).append("> modelFor() { return ").append(inPckName).append(".class; }\n");

   230                 w.append("  private static final Html4JavaType TYPE = new Html4JavaType();\n");

   231                 if (m.instance()) {

   232                     int cCnt = 0;

   233                     for (Element c : e.getEnclosedElements()) {

   234                         if (c.getKind() != ElementKind.CONSTRUCTOR) {

   235                             continue;

   236                         }

   237                         cCnt++;

   238                         ExecutableElement ec = (ExecutableElement) c;

   239                         if (ec.getParameters().size() > 0) {

   240                             continue;

   241                         }

   242                         if (ec.getModifiers().contains(Modifier.PRIVATE)) {

   243                             continue;

   244                         }

   245                         cCnt = 0;

   246                         break;

   247                     }

   248                     if (cCnt > 0) {

   249                         ok = false;

   250                         error("Needs non-private default constructor when instance=true", e);

   251                         w.append("  private final ").append(inPckName).append(" instance = null;\n");

   252                     } else {

   253                         w.append("  private final ").append(inPckName).append(" instance = new ").append(inPckName).append("();\n");

   254                     }

   255                 }

   256                 w.append("  private final org.netbeans.html.json.spi.Proto proto;\n");

   257                 w.append(body.toString());

   258                 w.append("  private ").append(className).append("(net.java.html.BrwsrCtx context) {\n");

   259                 w.append("    this.proto = TYPE.createProto(this, context);\n");

   260                 for (Prprt p : props) {

   261                     if (p.array()) {

   262                         final String tn = typeName(p);

   263                         String[] gs = toGetSet(p.name(), tn, p.array());

   264                         w.write("    this.prop_" + p.name() + " = proto.createList(\""

   265                             + p.name() + "\"");

   266                         if (functionDeps.containsKey(p.name())) {

   267                             int index = Arrays.asList(functionDeps.keySet().toArray()).indexOf(p.name());

   268                             w.write(", " + index);

   269                         } else {

   270                             w.write(", -1");

   271                         }

   272                         Collection<String[]> dependants = propsDeps.get(p.name());

   273                         if (dependants != null) {

   274                             for (String[] depProp : dependants) {

   275                                 w.write(", ");

   276                                 w.write('\"');

   277                                 w.write(depProp[0]);

   278                                 w.write('\"');

   279                             }

   280                         }

   281                         w.write(")");

   282                         w.write(";\n");

   283                     }

   284                 }

   285                 w.append("  };\n");

   286                 w.append("  public ").append(className).append("() {\n");

   287                 w.append("    this(net.java.html.BrwsrCtx.findDefault(").append(className).append(".class));\n");

   288                 for (Prprt p : props) {

   289                     if (!p.array()) {

   290                         boolean[] isModel = {false};

   291                         boolean[] isEnum = {false};

   292                         boolean isPrimitive[] = {false};

   293                         String tn = checkType(p, isModel, isEnum, isPrimitive);

   294                         if (isModel[0]) {

   295                             w.write("    prop_" + p.name() + " = this;\n");

   296                         }

   297                     }

   298                 }

   299                 w.append("  };\n");

   300                 if (props.length > 0 && builderPrefix == null) {

   301                     StringBuilder constructorWithArguments = new StringBuilder();

   302                     constructorWithArguments.append("  public ").append(className).append("(");

   303                     Prprt firstArray = null;

   304                     String sep = "";

   305                     int parameterCount = 0;

   306                     for (Prprt p : props) {

   307                         if (p.array()) {

   308                             if (firstArray == null) {

   309                                 firstArray = p;

   310                             }

   311                             continue;

   312                         }

   313                         String tn = typeName(p);

   314                         constructorWithArguments.append(sep);

   315                         constructorWithArguments.append(tn);

   316                         String[] third = toGetSet(p.name(), tn, false);

   317                         constructorWithArguments.append(" ").append(third[2]);

   318                         sep = ", ";

   319                         parameterCount++;

   320                     }

   321                     if (firstArray != null) {

   322                         String tn;

   323                         boolean[] isModel = {false};

   324                         boolean[] isEnum = {false};

   325                         boolean isPrimitive[] = {false};

   326                         tn = checkType(firstArray, isModel, isEnum, isPrimitive);

   327                         constructorWithArguments.append(sep);

   328                         constructorWithArguments.append(tn);

   329                         String[] third = toGetSet(firstArray.name(), tn, true);

   330                         constructorWithArguments.append("... ").append(third[2]);

   331                         parameterCount++;

   332                     }

   333                     constructorWithArguments.append(") {\n");

   334                     constructorWithArguments.append("    this(net.java.html.BrwsrCtx.findDefault(").append(className).append(".class));\n");

   335                     for (Prprt p : props) {

   336                         if (p.array()) {

   337                             continue;

   338                         }

   339                         String[] third = toGetSet(p.name(), null, false);

   340                         constructorWithArguments.append("    this.prop_" + p.name() + " = " + third[2] + ";\n");

   341                     }

   342                     if (firstArray != null) {

   343                         String[] third = toGetSet(firstArray.name(), null, true);

   344                         constructorWithArguments.append("    proto.initTo(this.prop_" + firstArray.name() + ", " + third[2] + ");\n");

   345                     }

   346                     constructorWithArguments.append("  };\n");

   347                     if (parameterCount < 255) {

   348                         w.write(constructorWithArguments.toString());

   349                     }

   350                 }

   351                 w.append("  private static class Html4JavaType extends org.netbeans.html.json.spi.Proto.Type<").append(className).append("> {\n");

   352                 w.append("    private Html4JavaType() {\n      super(").append(className).append(".class, ").

   353                     append(inPckName).append(".class, " + propsGetSet.size() + ", "

   354                     + functionsCount + ");\n");

   355                 {

   356                     for (int i = 0; i < propsGetSet.size(); i++) {

   357                         w.append("      registerProperty(\"").append(propsGetSet.get(i).name).append("\", ");

   358                         w.append((i) + ", " + propsGetSet.get(i).readOnly + ");\n");

   359                     }

   360                 }

   361                 {

   362                     for (int i = 0; i < functionsCount; i++) {

   363                         w.append("      registerFunction(\"").append((String)functions.get(i * 2)).append("\", ");

   364                         w.append(i + ");\n");

   365                     }

   366                 }

   367                 w.append("    }\n");

   368                 w.append("    @Override public void setValue(" + className + " data, int type, Object value) {\n");

   369                 w.append("      switch (type) {\n");

   370                 for (int i = 0; i < propsGetSet.size(); i++) {

   371                     final GetSet pgs = propsGetSet.get(i);

   372                     if (pgs.readOnly) {

   373                         continue;

   374                     }

   375                     final String set = pgs.setter;

   376                     String tn = pgs.type;

   377                     String btn = findBoxedType(tn);

   378                     if (btn != null) {

   379                         tn = btn;

   380                     }

   381                     w.append("        case " + i + ": ");

   382                     if (pgs.setter != null) {

   383                         w.append("data.").append(strip(pgs.setter)).append("(TYPE.extractValue(" + tn + ".class, value)); return;\n");

   384                     } else {

   385                         w.append("TYPE.replaceValue(data.").append(strip(pgs.getter)).append("(), " + tn + ".class, value); return;\n");

   386                     }

   387                 }

   388                 w.append("      }\n");

   389                 w.append("      throw new UnsupportedOperationException();\n");

   390                 w.append("    }\n");

   391                 w.append("    @Override public Object getValue(" + className + " data, int type) {\n");

   392                 w.append("      switch (type) {\n");

   393                 for (int i = 0; i < propsGetSet.size(); i++) {

   394                     final String get = propsGetSet.get(i).getter;

   395                     if (get != null) {

   396                         w.append("        case " + i + ": return data." + strip(get) + "();\n");

   397                     }

   398                 }

   399                 w.append("      }\n");

   400                 w.append("      throw new UnsupportedOperationException();\n");

   401                 w.append("    }\n");

   402                 w.append("    @Override public void call(" + className + " model, int type, Object data, Object ev) throws Exception {\n");

   403                 w.append("      switch (type) {\n");

   404                 for (int i = 0; i < functions.size(); i += 2) {

   405                     final String name = (String)functions.get(i);

   406                     final Object param = functions.get(i + 1);

   407                     if (param instanceof ExecutableElement) {

   408                         ExecutableElement ee = (ExecutableElement)param;

   409                         w.append("        case " + (i / 2) + ":\n");

   410                         w.append("          ");

   411                         if (m.instance()) {

   412                             w.append("model.instance");

   413                         } else {

   414                             w.append(((TypeElement)e).getQualifiedName());

   415                         }

   416                         w.append(".").append(name).append("(");

   417                         w.append(wrapParams(ee, null, className, "model", "ev", "data"));

   418                         w.append(");\n");

   419                         w.append("          return;\n");

   420                     } else {

   421                         String call = (String)param;

   422                         w.append("        case " + (i / 2) + ":\n"); // model." + name + "(data, ev); return;\n");

   423                         w.append("          ").append(call).append("\n");

   424                         w.append("          return;\n");

   426                     }

   427                 }

   428                 w.append("      }\n");

   429                 w.append("      throw new UnsupportedOperationException();\n");

   430                 w.append("    }\n");

   431                 w.append("    @Override public org.netbeans.html.json.spi.Proto protoFor(Object obj) {\n");

   432                 w.append("      return ((" + className + ")obj).proto;");

   433                 w.append("    }\n");

   434                 w.append("    @Override public void onChange(" + className + " model, int type) {\n");

   435                 w.append("      switch (type) {\n");

   436                 {

   437                     String[] arr = functionDeps.keySet().toArray(new String[0]);

   438                     for (int i = 0; i < arr.length; i++) {

   439                         Collection<String> onChange = functionDeps.get(arr[i]);

   440                         if (onChange != null) {

   441                             w.append("      case " + i + ":\n");

   442                             for (String call : onChange) {

   443                                 w.append("      ").append(call).append("\n");

   444                             }

   445                             w.write("      return;\n");

   446                         }

   447                     }

   448                 }

   449                 w.append("    }\n");

   450                 w.append("      throw new UnsupportedOperationException();\n");

   451                 w.append("    }\n");

   452                 w.append(onReceiveType);

   453                 w.append("    @Override public " + className + " read(net.java.html.BrwsrCtx c, Object json) { return new " + className + "(c, json); }\n");

   454                 w.append("    @Override public " + className + " cloneTo(" + className + " o, net.java.html.BrwsrCtx c) { return o.clone(c); }\n");

   455                 w.append("  }\n");

   456                 w.append("  private ").append(className).append("(net.java.html.BrwsrCtx c, Object json) {\n");

   457                 w.append("    this(c);\n");

   458                 int values = 0;

   459                 for (int i = 0; i < propsGetSet.size(); i++) {

   460                     Prprt p = findPrprt(props, propsGetSet.get(i).name);

   461                     if (p == null) {

   462                         continue;

   463                     }

   464                     values++;

   465                 }

   466                 w.append("    Object[] ret = new Object[" + values + "];\n");

   467                 w.append("    proto.extract(json, new String[] {\n");

   468                 for (int i = 0; i < propsGetSet.size(); i++) {

   469                     Prprt p = findPrprt(props, propsGetSet.get(i).name);

   470                     if (p == null) {

   471                         continue;

   472                     }

   473                     w.append("      \"").append(propsGetSet.get(i).name).append("\",\n");

   474                 }

   475                 w.append("    }, ret);\n");

   476                 for (int i = 0, cnt = 0, prop = 0; i < propsGetSet.size(); i++) {

   477                     final String pn = propsGetSet.get(i).name;

   478                     Prprt p = findPrprt(props, pn);

   479                     if (p == null || prop >= props.length) {

   480                         continue;

   481                     }

   482                     boolean[] isModel = { false };

   483                     boolean[] isEnum = { false };

   484                     boolean isPrimitive[] = { false };

   485                     String type = checkType(props[prop++], isModel, isEnum, isPrimitive);

   486                     if (p.array()) {

   487                         w.append("    for (Object e : useAsArray(ret[" + cnt + "])) {\n");

   488                         if (isModel[0]) {

   489                             w.append("      this.prop_").append(pn).append(".add(proto.read");

   490                             w.append("(" + type + ".class, e));\n");

   491                         } else if (isEnum[0]) {

   492                             w.append("        this.prop_").append(pn);

   493                             w.append(".add(e == null ? null : ");

   494                             w.append(type).append(".valueOf(TYPE.stringValue(e)));\n");

   495                         } else {

   496                             if (isPrimitive(type)) {

   497                                 if (type.equals("char")) {

   498                                     w.append("        this.prop_").append(pn).append(".add((char)TYPE.numberValue(e).");

   499                                     w.append("intValue());\n");

   500                                 } else {

   501                                     w.append("        this.prop_").append(pn).append(".add(TYPE.numberValue(e).");

   502                                     w.append(type).append("Value());\n");

   503                                 }

   504                             } else {

   505                                 w.append("        this.prop_").append(pn).append(".add((");

   506                                 w.append(type).append(")e);\n");

   507                             }

   508                         }

   509                         w.append("    }\n");

   510                     } else {

   511                         if (isEnum[0]) {

   512                             w.append("    try {\n");

   513                             w.append("    this.prop_").append(pn);

   514                             w.append(" = ret[" + cnt + "] == null ? null : ");

   515                             w.append(type).append(".valueOf(TYPE.stringValue(ret[" + cnt + "]));\n");

   516                             w.append("    } catch (IllegalArgumentException ex) {\n");

   517                             w.append("      ex.printStackTrace();\n");

   518                             w.append("    }\n");

   519                         } else if (isPrimitive(type)) {

   520                             w.append("    this.prop_").append(pn);

   521                             w.append(" = ret[" + cnt + "] == null ? ");

   522                             if ("char".equals(type)) {

   523                                 w.append("0 : (TYPE.charValue(");

   524                             } else if ("boolean".equals(type)) {

   525                                 w.append("false : (TYPE.boolValue(");

   526                             } else {

   527                                 w.append("0 : (TYPE.numberValue(");

   528                             }

   529                             w.append("ret[" + cnt + "])).");

   530                             w.append(type).append("Value();\n");

   531                         } else if (isModel[0]) {

   532                             w.append("    this.prop_").append(pn).append(" = proto.read");

   533                             w.append("(" + type + ".class, ");

   534                             w.append("ret[" + cnt + "]);\n");

   535                         }else {

   536                             w.append("    this.prop_").append(pn);

   537                             w.append(" = (").append(type).append(')');

   538                             w.append("ret[" + cnt + "];\n");

   539                         }

   540                     }

   541                     cnt++;

   542                 }

   543                 w.append("  }\n");

   544                 w.append("  private static Object[] useAsArray(Object o) {\n");

   545                 w.append("    return o instanceof Object[] ? ((Object[])o) : o == null ? new Object[0] : new Object[] { o };\n");

   546                 w.append("  }\n");

   547                 writeToString(props, w);

   548                 writeClone(className, props, w);

   549                 String targetId = findTargetId(e);

   550                 if (targetId != null) {

   551                     w.write("  /** Activates this model instance in the current {@link \n"

   552                         + "net.java.html.json.Models#bind(java.lang.Object, net.java.html.BrwsrCtx) browser context}. \n"

   553                         + "In case of using Knockout technology, this means to \n"

   554                         + "bind JSON like data in this model instance with Knockout tags in \n"

   555                         + "the surrounding HTML page.\n"

   556                     );

   557                     if (targetId != null) {

   558                         w.write("This method binds to element '" + targetId + "' on the page\n");

   559                     }

   560                     w.write(""

   561                         + "@return <code>this</code> object\n"

   562                         + "*/\n"

   563                     );

   564                     w.write("  public " + className + " applyBindings() {\n");

   565                     w.write("    proto.applyBindings();\n");

   566     //                w.write("    proto.applyBindings(id);\n");

   567                     w.write("    return this;\n");

   568                     w.write("  }\n");

   569                 } else {

   570                     w.write("  private " + className + " applyBindings() {\n");

   571                     w.write("    throw new IllegalStateException(\"Please specify targetId=\\\"\\\" in your @Model annotation\");\n");

   572                     w.write("  }\n");

   573                 }

   574                 w.write("  public boolean equals(Object o) {\n");

   575                 w.write("    if (o == this) return true;\n");

   576                 w.write("    if (!(o instanceof " + className + ")) return false;\n");

   577                 w.write("    " + className + " p = (" + className + ")o;\n");

   578                 for (Prprt p : props) {

   579                     w.write("    if (!TYPE.isSame(prop_" + p.name() + ", p.prop_" + p.name() + ")) return false;\n");

   580                 }

   581                 w.write("    return true;\n");

   582                 w.write("  }\n");

   583                 w.write("  public int hashCode() {\n");

   584                 w.write("    int h = " + className + ".class.getName().hashCode();\n");

   585                 for (Prprt p : props) {

   586                     w.write("    h = TYPE.hashPlus(prop_" + p.name() + ", h);\n");

   587                 }

   588                 w.write("    return h;\n");

   589                 w.write("  }\n");

   590                 w.write("}\n");

   591             } finally {

   592                 w.close();

   593             }

   594         } catch (IOException ex) {

   595             error("Can't create " + className + ".java", e);

   596             return false;

   597         }

   598         return ok;

   599     }

   601     private static String findBuilderPrefix(Element e, Model m) {

   602         if (!m.builder().isEmpty()) {

   603             return m.builder();

   604         }

   605         for (AnnotationMirror am : e.getAnnotationMirrors()) {

   606             for (Map.Entry<? extends Object, ? extends Object> entry : am.getElementValues().entrySet()) {

   607                 if ("builder()".equals(entry.getKey().toString())) {

   608                     return "";

   609                 }

   610             }

   611         }

   612         return null;

   613     }

   615     private static String builderMethod(String builderPrefix, Prprt p) {

   616         if (builderPrefix.isEmpty()) {

   617             return p.name();

   618         }

   619         return builderPrefix + Character.toUpperCase(p.name().charAt(0)) + p.name().substring(1);

   620     }

   622     private boolean generateProperties(

   623         Element where, String builderPrefix,

   624         Writer w, String className, Prprt[] properties,

   625         List<GetSet> props,

   626         Map<String,Collection<String[]>> deps,

   627         Map<String,Collection<String>> functionDeps

   628     ) throws IOException {

   629         boolean ok = true;

   630         for (Prprt p : properties) {

   631             final String tn;

   632             tn = typeName(p);

   633             String[] gs = toGetSet(p.name(), tn, p.array());

   634             String castTo;

   636             if (p.array()) {

   637                 w.write("  private final java.util.List<" + tn + "> prop_" + p.name() + ";\n");

   639                 castTo = "java.util.List";

   640                 w.write("  public java.util.List<" + tn + "> " + gs[0] + "() {\n");

   641                 w.write("    proto.accessProperty(\"" + p.name() + "\");\n");

   642                 w.write("    return prop_" + p.name() + ";\n");

   643                 w.write("  }\n");

   644                 if (builderPrefix != null) {

   645                     boolean[] isModel = {false};

   646                     boolean[] isEnum = {false};

   647                     boolean isPrimitive[] = {false};

   648                     String ret = checkType(p, isModel, isEnum, isPrimitive);

   649                     w.write("  public " + className + " " + builderMethod(builderPrefix, p) + "(" + ret + "... v) {\n");

   650                     w.write("    proto.accessProperty(\"" + p.name() + "\");\n");

   651                     w.append("   TYPE.replaceValue(prop_").append(p.name()).append(", " + tn + ".class, v);\n");

   652                     w.write("    return this;\n");

   653                     w.write("  }\n");

   654                 }

   655             } else {

   656                 castTo = tn;

   657                 boolean isModel[] = { false };

   658                 boolean isEnum[] = { false };

   659                 boolean isPrimitive[] = { false };

   660                 checkType(p, isModel, isEnum, isPrimitive);

   661                 if (isModel[0]) {

   662                     w.write("  private /*" + tn + "*/Object prop_" + p.name() + ";\n");

   664                 } else {

   665                     w.write("  private " + tn + " prop_" + p.name() + ";\n");

   666                 }

   667                 w.write("  public " + tn + " " + gs[0] + "() {\n");

   668                 w.write("    proto.accessProperty(\"" + p.name() + "\");\n");

   669                 if (isModel[0]) {

   670                     w.write("    if (prop_" + p.name() + " == this) prop_" + p.name() + " = new " + tn +"();\n");

   671                 }

   672                 w.write("    return (" + tn + ")prop_" + p.name() + ";\n");

   673                 w.write("  }\n");

   674                 w.write("  public void " + gs[1] + "(" + tn + " v) {\n");

   675                 w.write("    proto.verifyUnlocked();\n");

   676                 w.write("    Object o = prop_" + p.name() + ";\n");

   677                 if (isModel[0]) {

   678                     w.write("    if (o == v) return;\n");

   679                     w.write("    prop_" + p.name() + " = v;\n");

   680                 } else {

   681                     w.write("    if (TYPE.isSame(o , v)) return;\n");

   682                     w.write("    prop_" + p.name() + " = v;\n");

   683                 }

   684                 w.write("    proto.valueHasMutated(\"" + p.name() + "\", o, v);\n");

   685                 {

   686                     Collection<String[]> dependants = deps.get(p.name());

   687                     if (dependants != null) {

   688                         for (String[] pair : dependants) {

   689                             w.write("    proto.valueHasMutated(\"" + pair[0] + "\", null, " + pair[1] + "());\n");

   690                         }

   691                     }

   692                 }

   693                 {

   694                     Collection<String> dependants = functionDeps.get(p.name());

   695                     if (dependants != null) {

   696                         w.append("    ");

   697                         w.append(className).append(" model = ").append(className).append(".this;\n");

   698                         for (String call : dependants) {

   699                             w.append("  ").append(call);

   700                         }

   701                     }

   702                 }

   703                 w.write("  }\n");

   704                 if (builderPrefix != null) {

   705                     w.write("  public " + className + " " + builderMethod(builderPrefix, p) + "(" + tn + " v) {\n");

   706                     w.write("    " + gs[1] + "(v);\n");

   707                     w.write("    return this;\n");

   708                     w.write("  }\n");

   709                 }

   710             }

   712             for (int i = 0; i < props.size(); i++) {

   713                 if (props.get(i).name.equals(p.name())) {

   714                     error("Cannot have the name " + p.name() + " defined twice", where);

   715                     ok = false;

   716                 }

   717             }

   719             props.add(new GetSet(

   720                 p.name(),

   721                 gs[0],

   722                 gs[1],

   723                 tn,

   724                 gs[3] == null && !p.array()

   725             ));

   726         }

   727         return ok;

   728     }

   730     private boolean generateComputedProperties(

   731         String className,

   732         Writer w, Prprt[] fixedProps,

   733         Collection<? extends Element> arr, Collection<GetSet> props,

   734         Map<String,Collection<String[]>> deps

   735     ) throws IOException {

   736         boolean ok = true;

   737         for (Element e : arr) {

   738             if (e.getKind() != ElementKind.METHOD) {

   739                 continue;

   740             }

   741             final ComputedProperty cp = e.getAnnotation(ComputedProperty.class);

   742             final Transitive tp = e.getAnnotation(Transitive.class);

   743             if (cp == null) {

   744                 continue;

   745             }

   746             if (!e.getModifiers().contains(Modifier.STATIC)) {

   747                 error("Method " + e.getSimpleName() + " has to be static when annotated by @ComputedProperty", e);

   748                 ok = false;

   749                 continue;

   750             }

   751             ExecutableElement ee = (ExecutableElement)e;

   752             ExecutableElement write = null;

   753             if (!cp.write().isEmpty()) {

   754                 write = findWrite(ee, (TypeElement)e.getEnclosingElement(), cp.write(), className);

   755                 ok = write != null;

   756             }

   757             final TypeMirror rt = ee.getReturnType();

   758             final Types tu = processingEnv.getTypeUtils();

   759             TypeMirror ert = tu.erasure(rt);

   760             String tn = fqn(ert, ee);

   761             boolean array = false;

   762             final TypeMirror toCheck;

   763             if (tn.equals("java.util.List")) {

   764                 array = true;

   765                 toCheck = ((DeclaredType)rt).getTypeArguments().get(0);

   766             } else {

   767                 toCheck = rt;

   768             }

   770             final String sn = ee.getSimpleName().toString();

   772             if (toCheck.getKind().isPrimitive()) {

   773                 // OK

   774             } else {

   775                 TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();

   776                 TypeMirror enumType = processingEnv.getElementUtils().getTypeElement("java.lang.Enum").asType();

   778                 if (tu.isSubtype(toCheck, stringType)) {

   779                     // OK

   780                 } else if (tu.isSubtype(tu.erasure(toCheck), tu.erasure(enumType))) {

   781                     // OK

   782                 } else if (isModel(toCheck)) {

   783                     // OK

   784                 } else {

   785                     try {

   786                         tu.unboxedType(toCheck);

   787                         // boxed types are OK

   788                     } catch (IllegalArgumentException ex) {

   789                         ok = false;

   790                         error(sn + " cannot return " + toCheck, e);

   791                     }

   792                 }

   793             }

   795             String[] gs = toGetSet(sn, tn, array);

   797             w.write("  public " + tn);

   798             if (array) {

   799                 w.write("<" + toCheck + ">");

   800             }

   801             w.write(" " + gs[0] + "() {\n");

   802             int arg = 0;

   803             boolean deep = false;

   804             for (VariableElement pe : ee.getParameters()) {

   805                 final String dn = pe.getSimpleName().toString();

   807                 if (!verifyPropName(pe, dn, fixedProps)) {

   808                     ok = false;

   809                 }

   810                 final TypeMirror pt = pe.asType();

   811                 if (isModel(pt)) {

   812                     deep = true;

   813                 }

   814                 final String dt = fqn(pt, ee);

   815                 if (dt.startsWith("java.util.List") && pt instanceof DeclaredType) {

   816                     final List<? extends TypeMirror> ptArgs = ((DeclaredType)pt).getTypeArguments();

   817                     if (ptArgs.size() == 1 && isModel(ptArgs.get(0))) {

   818                         deep = true;

   819                     }

   820                 }

   821                 String[] call = toGetSet(dn, dt, false);

   822                 w.write("    " + dt + " arg" + (++arg) + " = ");

   823                 w.write(call[0] + "();\n");

   825                 Collection<String[]> depends = deps.get(dn);

   826                 if (depends == null) {

   827                     depends = new LinkedHashSet<String[]>();

   828                     deps.put(dn, depends);

   829                 }

   830                 depends.add(new String[] { sn, gs[0] });

   831             }

   832             w.write("    try {\n");

   833             if (tp != null) {

   834                 deep = tp.deep();

   835             }

   836             if (deep) {

   837                 w.write("      proto.acquireLock(\"" + sn + "\");\n");

   838             } else {

   839                 w.write("      proto.acquireLock();\n");

   840             }

   841             w.write("      return " + fqn(ee.getEnclosingElement().asType(), ee) + '.' + e.getSimpleName() + "(");

   842             String sep = "";

   843             for (int i = 1; i <= arg; i++) {

   844                 w.write(sep);

   845                 w.write("arg" + i);

   846                 sep = ", ";

   847             }

   848             w.write(");\n");

   849             w.write("    } finally {\n");

   850             w.write("      proto.releaseLock();\n");

   851             w.write("    }\n");

   852             w.write("  }\n");

   854             if (write == null) {

   855                 props.add(new GetSet(

   856                     e.getSimpleName().toString(),

   857                     gs[0],

   858                     null,

   859                     tn,

   860                     true

   861                 ));

   862             } else {

   863                 w.write("  public void " + gs[4] + "(" + write.getParameters().get(1).asType());

   864                 w.write(" value) {\n");

   865                 w.write("    " + fqn(ee.getEnclosingElement().asType(), ee) + '.' + write.getSimpleName() + "(this, value);\n");

   866                 w.write("  }\n");

   868                 props.add(new GetSet(

   869                     e.getSimpleName().toString(),

   870                     gs[0],

   871                     gs[4],

   872                     tn,

   873                     false

   874                 ));

   875             }

   876         }

   878         return ok;

   879     }

   881     private static String[] toGetSet(String name, String type, boolean array) {

   882         String n = Character.toUpperCase(name.charAt(0)) + name.substring(1);

   883         boolean clazz = "class".equals(name);

   884         String pref = clazz ? "access" : "get";

   885         if ("boolean".equals(type) && !array) {

   886             pref = "is";

   887         }

   888         if (array) {

   889             return new String[] {

   890                 pref + n,

   891                 null,

   892                 "a" + n,

   893                 null,

   894                 "set" + n

   895             };

   896         }

   897         return new String[]{

   898             pref + n,

   899             "set" + n,

   900             "a" + n,

   901             "",

   902             "set" + n

   903         };

   904     }

   906     private String typeName(Prprt p) {

   907         String ret;

   908         boolean[] isModel = { false };

   909         boolean[] isEnum = { false };

   910         boolean isPrimitive[] = { false };

   911         ret = checkType(p, isModel, isEnum, isPrimitive);

   912         if (p.array()) {

   913             String bt = findBoxedType(ret);

   914             if (bt != null) {

   915                 return bt;

   916             }

   917         }

   918         return ret;

   919     }

   921     private static String findBoxedType(String ret) {

   922         if (ret.equals("boolean")) {

   923             return Boolean.class.getName();

   924         }

   925         if (ret.equals("byte")) {

   926             return Byte.class.getName();

   927         }

   928         if (ret.equals("short")) {

   929             return Short.class.getName();

   930         }

   931         if (ret.equals("char")) {

   932             return Character.class.getName();

   933         }

   934         if (ret.equals("int")) {

   935             return Integer.class.getName();

   936         }

   937         if (ret.equals("long")) {

   938             return Long.class.getName();

   939         }

   940         if (ret.equals("float")) {

   941             return Float.class.getName();

   942         }

   943         if (ret.equals("double")) {

   944             return Double.class.getName();

   945         }

   946         return null;

   947     }

   949     private boolean verifyPropName(Element e, String propName, Prprt[] existingProps) {

   950         StringBuilder sb = new StringBuilder();

   951         String sep = "";

   952         for (Prprt Prprt : existingProps) {

   953             if (Prprt.name().equals(propName)) {

   954                 return true;

   955             }

   956             sb.append(sep);

   957             sb.append('"');

   958             sb.append(Prprt.name());

   959             sb.append('"');

   960             sep = ", ";

   961         }

   962         error(

   963             propName + " is not one of known properties: " + sb

   964             , e

   965         );

   966         return false;

   967     }

   969     private static String findPkgName(Element e) {

   970         for (;;) {

   971             if (e.getKind() == ElementKind.PACKAGE) {

   972                 return ((PackageElement)e).getQualifiedName().toString();

   973             }

   974             e = e.getEnclosingElement();

   975         }

   976     }

   978     private boolean generateFunctions(

   979         Element clazz, StringWriter body, String className,

   980         List<? extends Element> enclosedElements, List<Object> functions

   981     ) {

   982         boolean instance = clazz.getAnnotation(Model.class).instance();

   983         for (Element m : enclosedElements) {

   984             if (m.getKind() != ElementKind.METHOD) {

   985                 continue;

   986             }

   987             ExecutableElement e = (ExecutableElement)m;

   988             Function onF = e.getAnnotation(Function.class);

   989             if (onF == null) {

   990                 continue;

   991             }

   992             if (!instance && !e.getModifiers().contains(Modifier.STATIC)) {

   993                 error("@OnFunction method needs to be static", e);

   994                 return false;

   995             }

   996             if (e.getModifiers().contains(Modifier.PRIVATE)) {

   997                 error("@OnFunction method cannot be private", e);

   998                 return false;

   999             }

  1000             if (e.getReturnType().getKind() != TypeKind.VOID) {

  1001                 error("@OnFunction method should return void", e);

  1002                 return false;

  1003             }

  1004             String n = e.getSimpleName().toString();

  1005             functions.add(n);

  1006             functions.add(e);

  1007         }

  1008         return true;

  1009     }

  1011     private boolean generateOnChange(Element clazz, Map<String,Collection<String[]>> propDeps,

  1012         Prprt[] properties, String className,

  1013         Map<String, Collection<String>> functionDeps

  1014     ) {

  1015         boolean instance = clazz.getAnnotation(Model.class).instance();

  1016         for (Element m : clazz.getEnclosedElements()) {

  1017             if (m.getKind() != ElementKind.METHOD) {

  1018                 continue;

  1019             }

  1020             ExecutableElement e = (ExecutableElement) m;

  1021             OnPropertyChange onPC = e.getAnnotation(OnPropertyChange.class);

  1022             if (onPC == null) {

  1023                 continue;

  1024             }

  1025             for (String pn : onPC.value()) {

  1026                 if (findPrprt(properties, pn) == null && findDerivedFrom(propDeps, pn).isEmpty()) {

  1027                     error("No Prprt named '" + pn + "' in the model", clazz);

  1028                     return false;

  1029                 }

  1030             }

  1031             if (!instance && !e.getModifiers().contains(Modifier.STATIC)) {

  1032                 error("@OnPrprtChange method needs to be static", e);

  1033                 return false;

  1034             }

  1035             if (e.getModifiers().contains(Modifier.PRIVATE)) {

  1036                 error("@OnPrprtChange method cannot be private", e);

  1037                 return false;

  1038             }

  1039             if (e.getReturnType().getKind() != TypeKind.VOID) {

  1040                 error("@OnPrprtChange method should return void", e);

  1041                 return false;

  1042             }

  1043             String n = e.getSimpleName().toString();

  1046             for (String pn : onPC.value()) {

  1047                 StringBuilder call = new StringBuilder();

  1048                 call.append("  ").append(inPckName(clazz, instance)).append(".").append(n).append("(");

  1049                 call.append(wrapPropName(e, className, "name", pn));

  1050                 call.append(");\n");

  1052                 Collection<String> change = functionDeps.get(pn);

  1053                 if (change == null) {

  1054                     change = new ArrayList<String>();

  1055                     functionDeps.put(pn, change);

  1056                 }

  1057                 change.add(call.toString());

  1058                 for (String dpn : findDerivedFrom(propDeps, pn)) {

  1059                     change = functionDeps.get(dpn);

  1060                     if (change == null) {

  1061                         change = new ArrayList<String>();

  1062                         functionDeps.put(dpn, change);

  1063                     }

  1064                     change.add(call.toString());

  1065                 }

  1066             }

  1067         }

  1068         return true;

  1069     }

  1071     private boolean generateOperation(Element clazz,

  1072         StringWriter body, String className,

  1073         List<? extends Element> enclosedElements,

  1074         List<Object> functions

  1075     ) {

  1076         boolean instance = clazz.getAnnotation(Model.class).instance();

  1077         for (Element m : enclosedElements) {

  1078             if (m.getKind() != ElementKind.METHOD) {

  1079                 continue;

  1080             }

  1081             ExecutableElement e = (ExecutableElement)m;

  1082             ModelOperation mO = e.getAnnotation(ModelOperation.class);

  1083             if (mO == null) {

  1084                 continue;

  1085             }

  1086             if (!instance && !e.getModifiers().contains(Modifier.STATIC)) {

  1087                 error("@ModelOperation method needs to be static", e);

  1088                 return false;

  1089             }

  1090             if (e.getModifiers().contains(Modifier.PRIVATE)) {

  1091                 error("@ModelOperation method cannot be private", e);

  1092                 return false;

  1093             }

  1094             if (e.getReturnType().getKind() != TypeKind.VOID) {

  1095                 error("@ModelOperation method should return void", e);

  1096                 return false;

  1097             }

  1098             List<String> args = new ArrayList<String>();

  1099             {

  1100                 body.append("  /** @see " + clazz.getSimpleName() + "#" + m.getSimpleName() + " */\n");

  1101                 body.append("  public void ").append(m.getSimpleName()).append("(");

  1102                 String sep = "";

  1103                 boolean checkFirst = true;

  1104                 for (VariableElement ve : e.getParameters()) {

  1105                     final TypeMirror type = ve.asType();

  1106                     CharSequence simpleName;

  1107                     if (type.getKind() == TypeKind.DECLARED) {

  1108                         simpleName = ((DeclaredType)type).asElement().getSimpleName();

  1109                     } else {

  1110                         simpleName = type.toString();

  1111                     }

  1112                     if (checkFirst && simpleName.toString().equals(className)) {

  1113                         checkFirst = false;

  1114                     } else {

  1115                         if (checkFirst) {

  1116                             error("First parameter of @ModelOperation method must be " + className, m);

  1117                             return false;

  1118                         }

  1119                         args.add(ve.getSimpleName().toString());

  1120                         body.append(sep).append("final ");

  1121                         body.append(ve.asType().toString()).append(" ");

  1122                         body.append(ve.toString());

  1123                         sep = ", ";

  1124                     }

  1125                 }

  1126                 body.append(") {\n");

  1127                 int idx = functions.size() / 2;

  1128                 functions.add(m.getSimpleName().toString());

  1129                 body.append("    proto.runInBrowser(" + idx);

  1130                 for (String s : args) {

  1131                     body.append(", ").append(s);

  1132                 }

  1133                 body.append(");\n");

  1134                 body.append("  }\n");

  1136                 StringBuilder call = new StringBuilder();

  1137                 call.append("{ Object[] arr = (Object[])data; ");

  1138                 call.append(inPckName(clazz, true)).append(".").append(m.getSimpleName()).append("(");

  1139                 int i = 0;

  1140                 for (VariableElement ve : e.getParameters()) {

  1141                     if (i++ == 0) {

  1142                         call.append("model");

  1143                         continue;

  1144                     }

  1145                     String type = ve.asType().toString();

  1146                     String boxedType = findBoxedType(type);

  1147                     if (boxedType != null) {

  1148                         type = boxedType;

  1149                     }

  1150                     call.append(", ").append("(").append(type).append(")arr[").append(i - 2).append("]");

  1151                 }

  1152                 call.append("); }");

  1153                 functions.add(call.toString());

  1154             }

  1156         }

  1157         return true;

  1158     }

  1161     private boolean generateReceive(

  1162         Element clazz, StringWriter body, String className,

  1163         List<? extends Element> enclosedElements, StringBuilder inType

  1164     ) {

  1165         boolean ret = generateReceiveImpl(clazz, body, className, enclosedElements, inType);

  1166         if (!ret) {

  1167             inType.setLength(0);

  1168         }

  1169         return ret;

  1170     }

  1171     private boolean generateReceiveImpl(

  1172         Element clazz, StringWriter body, String className,

  1173         List<? extends Element> enclosedElements, StringBuilder inType

  1174     ) {

  1175         inType.append("  @Override public void onMessage(").append(className).append(" model, int index, int type, Object data, Object[] params) {\n");

  1176         inType.append("    switch (index) {\n");

  1177         int index = 0;

  1178         boolean ok = true;

  1179         boolean instance = clazz.getAnnotation(Model.class).instance();

  1180         for (Element m : enclosedElements) {

  1181             if (m.getKind() != ElementKind.METHOD) {

  1182                 continue;

  1183             }

  1184             ExecutableElement e = (ExecutableElement)m;

  1185             OnReceive onR = e.getAnnotation(OnReceive.class);

  1186             if (onR == null) {

  1187                 continue;

  1188             }

  1189             if (!instance && !e.getModifiers().contains(Modifier.STATIC)) {

  1190                 error("@OnReceive method needs to be static", e);

  1191                 return false;

  1192             }

  1193             if (e.getModifiers().contains(Modifier.PRIVATE)) {

  1194                 error("@OnReceive method cannot be private", e);

  1195                 return false;

  1196             }

  1197             if (e.getReturnType().getKind() != TypeKind.VOID) {

  1198                 error("@OnReceive method should return void", e);

  1199                 return false;

  1200             }

  1201             if (!onR.jsonp().isEmpty() && !"GET".equals(onR.method())) {

  1202                 error("JSONP works only with GET transport method", e);

  1203             }

  1204             String dataMirror = findDataSpecified(e, onR);

  1205             if ("PUT".equals(onR.method()) && dataMirror == null) {

  1206                 error("PUT method needs to specify a data() class", e);

  1207                 return false;

  1208             }

  1209             if ("POST".equals(onR.method()) && dataMirror == null) {

  1210                 error("POST method needs to specify a data() class", e);

  1211                 return false;

  1212             }

  1213             if (e.getParameters().size() < 2) {

  1214                 error("@OnReceive method needs at least two parameters", e);

  1215             }

  1216             final boolean isWebSocket = "WebSocket".equals(onR.method());

  1217             if (isWebSocket && dataMirror == null) {

  1218                 error("WebSocket method needs to specify a data() class", e);

  1219             }

  1220             int expectsList = 0;

  1221             List<String> args = new ArrayList<String>();

  1222             List<String> params = new ArrayList<String>();

  1223             // first argument is model class

  1224             {

  1225                 TypeMirror type = e.getParameters().get(0).asType();

  1226                 CharSequence simpleName;

  1227                 if (type.getKind() == TypeKind.DECLARED) {

  1228                     simpleName = ((DeclaredType) type).asElement().getSimpleName();

  1229                 } else {

  1230                     simpleName = type.toString();

  1231                 }

  1232                 if (simpleName.toString().equals(className)) {

  1233                     args.add("model");

  1234                 } else {

  1235                     error("First parameter needs to be " + className, e);

  1236                     return false;

  1237                 }

  1238             }

  1240             String modelClass;

  1241             {

  1242                 final Types tu = processingEnv.getTypeUtils();

  1243                 TypeMirror type = e.getParameters().get(1).asType();

  1244                 TypeMirror modelType = null;

  1245                 TypeMirror ert = tu.erasure(type);

  1247                 if (isModel(type)) {

  1248                     modelType = type;

  1249                 } else if (type.getKind() == TypeKind.ARRAY) {

  1250                     modelType = ((ArrayType)type).getComponentType();

  1251                     expectsList = 1;

  1252                 } else if ("java.util.List".equals(fqn(ert, e))) {

  1253                     List<? extends TypeMirror> typeArgs = ((DeclaredType)type).getTypeArguments();

  1254                     if (typeArgs.size() == 1) {

  1255                         modelType = typeArgs.get(0);

  1256                         expectsList = 2;

  1257                     }

  1258                 } else if (type.toString().equals("java.lang.String")) {

  1259                     modelType = type;

  1260                 }

  1261                 if (modelType == null) {

  1262                     error("Second arguments needs to be a model, String or array or List of models", e);

  1263                     return false;

  1264                 }

  1265                 modelClass = modelType.toString();

  1266                 if (expectsList == 1) {

  1267                     args.add("arr");

  1268                 } else if (expectsList == 2) {

  1269                     args.add("java.util.Arrays.asList(arr)");

  1270                 } else {

  1271                     args.add("arr[0]");

  1272                 }

  1273             }

  1274             String n = e.getSimpleName().toString();

  1275             if (isWebSocket) {

  1276                 body.append("  /** Performs WebSocket communication. Call with <code>null</code> data parameter\n");

  1277                 body.append("  * to open the connection (even if not required). Call with non-null data to\n");

  1278                 body.append("  * send messages to server. Call again with <code>null</code> data to close the socket.\n");

  1279                 body.append("  */\n");

  1280                 if (onR.headers().length > 0) {

  1281                     error("WebSocket spec does not support headers", e);

  1282                 }

  1283             }

  1284             body.append("  public void ").append(n).append("(");

  1285             StringBuilder urlBefore = new StringBuilder();

  1286             StringBuilder urlAfter = new StringBuilder();

  1287             StringBuilder headers = new StringBuilder();

  1288             String jsonpVarName = null;

  1289             {

  1290                 String sep = "";

  1291                 boolean skipJSONP = onR.jsonp().isEmpty();

  1292                 Set<String> receiveParams = new LinkedHashSet<String>();

  1293                 findParamNames(receiveParams, e, onR.url(), onR.jsonp(), urlBefore, urlAfter);

  1294                 for (String headerLine : onR.headers()) {

  1295                     if (headerLine.contains("\r") || headerLine.contains("\n")) {

  1296                         error("Header line cannot contain line separator", e);

  1297                     }

  1298                     findParamNames(receiveParams, e, headerLine, null, headers);

  1299                     headers.append("+ \"\\r\\n\" +\n");

  1300                 }

  1301                 if (headers.length() > 0) {

  1302                     headers.append("\"\"");

  1303                 }

  1304                 for (String p : receiveParams) {

  1305                     if (!skipJSONP && p.equals(onR.jsonp())) {

  1306                         skipJSONP = true;

  1307                         jsonpVarName = p;

  1308                         continue;

  1309                     }

  1310                     body.append(sep);

  1311                     body.append("String ").append(p);

  1312                     sep = ", ";

  1313                 }

  1314                 if (!skipJSONP) {

  1315                     error(

  1316                         "Name of jsonp attribute ('" + onR.jsonp() +

  1317                         "') is not used in url attribute '" + onR.url() + "'", e

  1318                     );

  1319                 }

  1320                 if (dataMirror != null) {

  1321                     body.append(sep).append(dataMirror.toString()).append(" data");

  1322                 }

  1323                 for (int i = 2; i < e.getParameters().size(); i++) {

  1324                     if (isWebSocket) {

  1325                         error("@OnReceive(method=\"WebSocket\") can only have two arguments", e);

  1326                         ok = false;

  1327                     }

  1329                     VariableElement ve = e.getParameters().get(i);

  1330                     body.append(sep).append(ve.asType().toString()).append(" ").append(ve.getSimpleName());

  1331                     final String tp = ve.asType().toString();

  1332                     String btn = findBoxedType(tp);

  1333                     if (btn == null) {

  1334                         btn = tp;

  1335                     }

  1336                     args.add("(" + btn + ")params[" + (i - 2) + "]");

  1337                     params.add(ve.getSimpleName().toString());

  1338                     sep = ", ";

  1339                 }

  1340             }

  1341             body.append(") {\n");

  1342             boolean webSocket = onR.method().equals("WebSocket");

  1343             if (webSocket) {

  1344                 if (generateWSReceiveBody(index++, body, inType, onR, e, clazz, className, expectsList != 0, modelClass, n, args, params, urlBefore, jsonpVarName, urlAfter, dataMirror, headers)) {

  1345                     return false;

  1346                 }

  1347                 body.append("  }\n");

  1348                 body.append("  private Object ws_" + e.getSimpleName() + ";\n");

  1349             } else {

  1350                 if (generateJSONReceiveBody(index++, body, inType, onR, e, clazz, className, expectsList != 0, modelClass, n, args, params, urlBefore, jsonpVarName, urlAfter, dataMirror, headers)) {

  1351                     ok = false;

  1352                 }

  1353                 body.append("  }\n");

  1354             }

  1355         }

  1356         inType.append("    }\n");

  1357         inType.append("    throw new UnsupportedOperationException(\"index: \" + index + \" type: \" + type);\n");

  1358         inType.append("  }\n");

  1359         return ok;

  1360     }

  1362     private boolean generateJSONReceiveBody(int index, StringWriter method, StringBuilder body, OnReceive onR, ExecutableElement e, Element clazz, String className, boolean expectsList, String modelClass, String n, List<String> args, List<String> params, StringBuilder urlBefore, String jsonpVarName, StringBuilder urlAfter, String dataMirror, StringBuilder headers) {

  1363         boolean error = false;

  1364         body.append(

  1365             "    case " + index + ": {\n" +

  1366             "      if (type == 2) { /* on error */\n" +

  1367             "        Exception ex = (Exception)data;\n"

  1368             );

  1369         if (onR.onError().isEmpty()) {

  1370             body.append(

  1371                 "        ex.printStackTrace();\n"

  1372                 );

  1373         } else {

  1374             error = !findOnError(e, ((TypeElement)clazz), onR.onError(), className);

  1375             body.append("        ").append(clazz.getSimpleName()).append(".").append(onR.onError()).append("(");

  1376             body.append("model, ex);\n");

  1377         }

  1378         body.append(

  1379             "        return;\n" +

  1380             "      } else if (type == 1) {\n" +

  1381             "        Object[] ev = (Object[])data;\n"

  1382             );

  1383         if (expectsList) {

  1384             body.append(

  1385                 "        " + modelClass + "[] arr = new " + modelClass + "[ev.length];\n"

  1386                 );

  1387         } else {

  1388             body.append(

  1389                 "        " + modelClass + "[] arr = { null };\n"

  1390                 );

  1391         }

  1392         body.append(

  1393             "        TYPE.copyJSON(model.proto.getContext(), ev, " + modelClass + ".class, arr);\n"

  1394         );

  1395         {

  1396             body.append("        ").append(clazz.getSimpleName()).append(".").append(n).append("(");

  1397             String sep = "";

  1398             for (String arg : args) {

  1399                 body.append(sep);

  1400                 body.append(arg);

  1401                 sep = ", ";

  1402             }

  1403             body.append(");\n");

  1404         }

  1405         body.append(

  1406             "        return;\n" +

  1407             "      }\n" +

  1408             "    }\n"

  1409             );

  1410         method.append("    proto.loadJSONWithHeaders(" + index + ",\n        ");

  1411         method.append(headers.length() == 0 ? "null" : headers).append(",\n        ");

  1412         method.append(urlBefore).append(", ");

  1413         if (jsonpVarName != null) {

  1414             method.append(urlAfter);

  1415         } else {

  1416             method.append("null");

  1417         }

  1418         if (!"GET".equals(onR.method()) || dataMirror != null) {

  1419             method.append(", \"").append(onR.method()).append('"');

  1420             if (dataMirror != null) {

  1421                 method.append(", data");

  1422             } else {

  1423                 method.append(", null");

  1424             }

  1425         } else {

  1426             method.append(", null, null");

  1427         }

  1428         for (String a : params) {

  1429             method.append(", ").append(a);

  1430         }

  1431         method.append(");\n");

  1432         return error;

  1433     }

  1435     private boolean generateWSReceiveBody(int index, StringWriter method, StringBuilder body, OnReceive onR, ExecutableElement e, Element clazz, String className, boolean expectsList, String modelClass, String n, List<String> args, List<String> params, StringBuilder urlBefore, String jsonpVarName, StringBuilder urlAfter, String dataMirror, StringBuilder headers) {

  1436         body.append(

  1437             "    case " + index + ": {\n" +

  1438             "      if (type == 0) { /* on open */\n" +

  1439             "        ").append(inPckName(clazz, true)).append(".").append(n).append("(");

  1440         {

  1441             String sep = "";

  1442             for (String arg : args) {

  1443                 body.append(sep);

  1444                 if (arg.startsWith("arr") || arg.startsWith("java.util.Array")) {

  1445                     body.append("null");

  1446                 } else {

  1447                     body.append(arg);

  1448                 }

  1449                 sep = ", ";

  1450             }

  1451         }

  1452         body.append(");\n");

  1453         body.append(

  1454             "        return;\n" +

  1455             "      } else if (type == 2) { /* on error */\n" +

  1456             "        Exception value = (Exception)data;\n"

  1457             );

  1458         if (onR.onError().isEmpty()) {

  1459             body.append(

  1460                 "        value.printStackTrace();\n"

  1461                 );

  1462         } else {

  1463             if (!findOnError(e, ((TypeElement)clazz), onR.onError(), className)) {

  1464                 return true;

  1465             }

  1466             body.append("        ").append(inPckName(clazz, true)).append(".").append(onR.onError()).append("(");

  1467             body.append("model, value);\n");

  1468         }

  1469         body.append(

  1470             "        return;\n" +

  1471             "      } else if (type == 1) {\n" +

  1472             "        Object[] ev = (Object[])data;\n"

  1473         );

  1474         if (expectsList) {

  1475             body.append(

  1476                 "        " + modelClass + "[] arr = new " + modelClass + "[ev.length];\n"

  1477                 );

  1478         } else {

  1479             body.append(

  1480                 "        " + modelClass + "[] arr = { null };\n"

  1481                 );

  1482         }

  1483         body.append(

  1484             "        TYPE.copyJSON(model.proto.getContext(), ev, " + modelClass + ".class, arr);\n"

  1485         );

  1486         {

  1487             body.append("        ").append(inPckName(clazz, true)).append(".").append(n).append("(");

  1488             String sep = "";

  1489             for (String arg : args) {

  1490                 body.append(sep);

  1491                 body.append(arg);

  1492                 sep = ", ";

  1493             }

  1494             body.append(");\n");

  1495         }

  1496         body.append(

  1497             "        return;\n" +

  1498             "      }"

  1499         );

  1500         if (!onR.onError().isEmpty()) {

  1501             body.append(" else if (type == 3) { /* on close */\n");

  1502             body.append("        ").append(inPckName(clazz, true)).append(".").append(onR.onError()).append("(");

  1503             body.append("model, null);\n");

  1504             body.append(

  1505                 "        return;" +

  1506                 "      }"

  1507             );

  1508         }

  1509         body.append("\n");

  1510         body.append("    }\n");

  1511         method.append("    if (this.ws_").append(e.getSimpleName()).append(" == null) {\n");

  1512         method.append("      this.ws_").append(e.getSimpleName());

  1513         method.append("= proto.wsOpen(" + index + ", ");

  1514         method.append(urlBefore).append(", data);\n");

  1515         method.append("    } else {\n");

  1516         method.append("      proto.wsSend(this.ws_").append(e.getSimpleName()).append(", ").append(urlBefore).append(", data");

  1517         for (String a : params) {

  1518             method.append(", ").append(a);

  1519         }

  1520         method.append(");\n");

  1521         method.append("    }\n");

  1522         return false;

  1523     }

  1525     private CharSequence wrapParams(

  1526         ExecutableElement ee, String id, String className, String classRef, String evName, String dataName

  1527     ) {

  1528         TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();

  1529         StringBuilder params = new StringBuilder();

  1530         boolean first = true;

  1531         for (VariableElement ve : ee.getParameters()) {

  1532             if (!first) {

  1533                 params.append(", ");

  1534             }

  1535             first = false;

  1536             String toCall = null;

  1537             String toFinish = null;

  1538             boolean addNull = true;

  1539             if (ve.asType() == stringType) {

  1540                 if (ve.getSimpleName().contentEquals("id")) {

  1541                     params.append('"').append(id).append('"');

  1542                     continue;

  1543                 }

  1544                 toCall = classRef + ".proto.toString(";

  1545             }

  1546             if (ve.asType().getKind() == TypeKind.DOUBLE) {

  1547                 toCall = classRef + ".proto.toNumber(";

  1548                 toFinish = ".doubleValue()";

  1549             }

  1550             if (ve.asType().getKind() == TypeKind.FLOAT) {

  1551                 toCall = classRef + ".proto.toNumber(";

  1552                 toFinish = ".floatValue()";

  1553             }

  1554             if (ve.asType().getKind() == TypeKind.INT) {

  1555                 toCall = classRef + ".proto.toNumber(";

  1556                 toFinish = ".intValue()";

  1557             }

  1558             if (ve.asType().getKind() == TypeKind.BYTE) {

  1559                 toCall = classRef + ".proto.toNumber(";

  1560                 toFinish = ".byteValue()";

  1561             }

  1562             if (ve.asType().getKind() == TypeKind.SHORT) {

  1563                 toCall = classRef + ".proto.toNumber(";

  1564                 toFinish = ".shortValue()";

  1565             }

  1566             if (ve.asType().getKind() == TypeKind.LONG) {

  1567                 toCall = classRef + ".proto.toNumber(";

  1568                 toFinish = ".longValue()";

  1569             }

  1570             if (ve.asType().getKind() == TypeKind.BOOLEAN) {

  1571                 toCall = "\"true\".equals(" + classRef + ".proto.toString(";

  1572                 toFinish = ")";

  1573             }

  1574             if (ve.asType().getKind() == TypeKind.CHAR) {

  1575                 toCall = "(char)" + classRef + ".proto.toNumber(";

  1576                 toFinish = ".intValue()";

  1577             }

  1578             if (dataName != null && ve.getSimpleName().contentEquals(dataName) && isModel(ve.asType())) {

  1579                 toCall = classRef + ".proto.toModel(" + ve.asType() + ".class, ";

  1580                 addNull = false;

  1581             }

  1583             if (toCall != null) {

  1584                 params.append(toCall);

  1585                 if (dataName != null && ve.getSimpleName().contentEquals(dataName)) {

  1586                     params.append(dataName);

  1587                     if (addNull) {

  1588                         params.append(", null");

  1589                     }

  1590                 } else {

  1591                     if (evName == null) {

  1592                         final StringBuilder sb = new StringBuilder();

  1593                         sb.append("Unexpected string parameter name.");

  1594                         if (dataName != null) {

  1595                             sb.append(" Try \"").append(dataName).append("\"");

  1596                         }

  1597                         error(sb.toString(), ee);

  1598                     }

  1599                     params.append(evName);

  1600                     params.append(", \"");

  1601                     params.append(ve.getSimpleName().toString());

  1602                     params.append("\"");

  1603                 }

  1604                 params.append(")");

  1605                 if (toFinish != null) {

  1606                     params.append(toFinish);

  1607                 }

  1608                 continue;

  1609             }

  1610             String rn = fqn(ve.asType(), ee);

  1611             int last = rn.lastIndexOf('.');

  1612             if (last >= 0) {

  1613                 rn = rn.substring(last + 1);

  1614             }

  1615             if (rn.equals(className)) {

  1616                 params.append(classRef);

  1617                 continue;

  1618             }

  1619             StringBuilder err = new StringBuilder();

  1620             err.append("Argument ").

  1621                 append(ve.getSimpleName()).

  1622                 append(" is not valid. The annotated method can only accept ").

  1623                 append(className).

  1624                 append(" argument");

  1625             if (dataName != null) {

  1626                 err.append(" or argument named '").append(dataName).append("'");

  1627             }

  1628             err.append(".");

  1629             error(err.toString(), ee);

  1630         }

  1631         return params;

  1632     }

  1635     private CharSequence wrapPropName(

  1636         ExecutableElement ee, String className, String propName, String propValue

  1637     ) {

  1638         TypeMirror stringType = processingEnv.getElementUtils().getTypeElement("java.lang.String").asType();

  1639         StringBuilder params = new StringBuilder();

  1640         boolean first = true;

  1641         for (VariableElement ve : ee.getParameters()) {

  1642             if (!first) {

  1643                 params.append(", ");

  1644             }

  1645             first = false;

  1646             if (ve.asType() == stringType) {

  1647                 if (propName != null && ve.getSimpleName().contentEquals(propName)) {

  1648                     params.append('"').append(propValue).append('"');

  1649                 } else {

  1650                     error("Unexpected string parameter name. Try \"" + propName + "\".", ee);

  1651                 }

  1652                 continue;

  1653             }

  1654             String rn = fqn(ve.asType(), ee);

  1655             int last = rn.lastIndexOf('.');

  1656             if (last >= 0) {

  1657                 rn = rn.substring(last + 1);

  1658             }

  1659             if (rn.equals(className)) {

  1660                 params.append("model");

  1661                 continue;

  1662             }

  1663             error(

  1664                 "@OnPrprtChange method can only accept String or " + className + " arguments",

  1665                 ee);

  1666         }

  1667         return params;

  1668     }

  1670     private boolean isModel(TypeMirror tm) {

  1671         if (tm.getKind() == TypeKind.ERROR) {

  1672             return true;

  1673         }

  1674         final Element e = processingEnv.getTypeUtils().asElement(tm);

  1675         if (e == null) {

  1676             return false;

  1677         }

  1678         for (Element ch : e.getEnclosedElements()) {

  1679             if (ch.getKind() == ElementKind.METHOD) {

  1680                 ExecutableElement ee = (ExecutableElement)ch;

  1681                 if (ee.getParameters().isEmpty() && ee.getSimpleName().contentEquals("modelFor")) {

  1682                     return true;

  1683                 }

  1684             }

  1685         }

  1686         return models.values().contains(e.getSimpleName().toString());

  1687     }

  1689     private void writeToString(Prprt[] props, Writer w) throws IOException {

  1690         w.write("  public String toString() {\n");

  1691         w.write("    StringBuilder sb = new StringBuilder();\n");

  1692         w.write("    sb.append('{');\n");

  1693         String sep = "";

  1694         for (Prprt p : props) {

  1695             w.write(sep);

  1696             w.append("    sb.append('\"').append(\"" + p.name() + "\")");

  1697                 w.append(".append('\"').append(\":\");\n");

  1698             w.append("    sb.append(TYPE.toJSON(prop_");

  1699             w.append(p.name()).append("));\n");

  1700             sep =    "    sb.append(',');\n";

  1701         }

  1702         w.write("    sb.append('}');\n");

  1703         w.write("    return sb.toString();\n");

  1704         w.write("  }\n");

  1705     }

  1706     private void writeClone(String className, Prprt[] props, Writer w) throws IOException {

  1707         w.write("  public " + className + " clone() {\n");

  1708         w.write("    return clone(proto.getContext());\n");

  1709         w.write("  }\n");

  1710         w.write("  private " + className + " clone(net.java.html.BrwsrCtx ctx) {\n");

  1711         w.write("    " + className + " ret = new " + className + "(ctx);\n");

  1712         for (Prprt p : props) {

  1713             String tn = typeName(p);

  1714             String[] gs = toGetSet(p.name(), tn, p.array());

  1715             if (!p.array()) {

  1716                 boolean isModel[] = { false };

  1717                 boolean isEnum[] = { false };

  1718                 boolean isPrimitive[] = { false };

  1719                 checkType(p, isModel, isEnum, isPrimitive);

  1720                 if (!isModel[0]) {

  1721                     w.write("    ret.prop_" + p.name() + " = " + gs[0] + "();\n");

  1722                     continue;

  1723                 }

  1724                 w.write("    ret.prop_" + p.name() + " =  " + gs[0] + "()  == null ? null : " + gs[0] + "().clone();\n");

  1725             } else {

  1726                 w.write("    proto.cloneList(ret." + gs[0] + "(), ctx, prop_" + p.name() + ");\n");

  1727             }

  1728         }

  1730         w.write("    return ret;\n");

  1731         w.write("  }\n");

  1732     }

  1734     private String inPckName(Element e, boolean preferInstance) {

  1735         if (preferInstance && e.getAnnotation(Model.class).instance()) {

  1736             return "model.instance";

  1737         }

  1738         StringBuilder sb = new StringBuilder();

  1739         while (e.getKind() != ElementKind.PACKAGE) {

  1740             if (sb.length() == 0) {

  1741                 sb.append(e.getSimpleName());

  1742             } else {

  1743                 sb.insert(0, '.');

  1744                 sb.insert(0, e.getSimpleName());

  1745             }

  1746             e = e.getEnclosingElement();

  1747         }

  1748         return sb.toString();

  1749     }

  1751     private String fqn(TypeMirror pt, Element relative) {

  1752         if (pt.getKind() == TypeKind.ERROR) {

  1753             final Elements eu = processingEnv.getElementUtils();

  1754             PackageElement pckg = eu.getPackageOf(relative);

  1755             return pckg.getQualifiedName() + "." + pt.toString();

  1756         }

  1757         return pt.toString();

  1758     }

  1760     private String checkType(Prprt p, boolean[] isModel, boolean[] isEnum, boolean[] isPrimitive) {

  1761         TypeMirror tm;

  1762         try {

  1763             String ret = p.typeName(processingEnv);

  1764             TypeElement e = processingEnv.getElementUtils().getTypeElement(ret);

  1765             if (e == null) {

  1766                 isModel[0] = true;

  1767                 isEnum[0] = false;

  1768                 isPrimitive[0] = false;

  1769                 return ret;

  1770             }

  1771             tm = e.asType();

  1772         } catch (MirroredTypeException ex) {

  1773             tm = ex.getTypeMirror();

  1774         }

  1775         tm = processingEnv.getTypeUtils().erasure(tm);

  1776         if (isPrimitive[0] = tm.getKind().isPrimitive()) {

  1777             isEnum[0] = false;

  1778             isModel[0] = false;

  1779             return tm.toString();

  1780         }

  1781         final Element e = processingEnv.getTypeUtils().asElement(tm);

  1782         if (e.getKind() == ElementKind.CLASS && tm.getKind() == TypeKind.ERROR) {

  1783             isModel[0] = true;

  1784             isEnum[0] = false;

  1785             return e.getSimpleName().toString();

  1786         }

  1788         final Model m = e == null ? null : e.getAnnotation(Model.class);

  1789         String ret;

  1790         if (m != null) {

  1791             ret = findPkgName(e) + '.' + m.className();

  1792             isModel[0] = true;

  1793             models.put(e, m.className());

  1794         } else if (findModelForMthd(e)) {

  1795             ret = ((TypeElement)e).getQualifiedName().toString();

  1796             isModel[0] = true;

  1797         } else {

  1798             ret = tm.toString();

  1799         }

  1800         TypeMirror enm = processingEnv.getElementUtils().getTypeElement("java.lang.Enum").asType();

  1801         enm = processingEnv.getTypeUtils().erasure(enm);

  1802         isEnum[0] = processingEnv.getTypeUtils().isSubtype(tm, enm);

  1803         return ret;

  1804     }

  1806     private static boolean findModelForMthd(Element clazz) {

  1807         if (clazz == null) {

  1808             return false;

  1809         }

  1810         for (Element e : clazz.getEnclosedElements()) {

  1811             if (e.getKind() == ElementKind.METHOD) {

  1812                 ExecutableElement ee = (ExecutableElement)e;

  1813                 if (

  1814                     ee.getSimpleName().contentEquals("modelFor") &&

  1815                     ee.getParameters().isEmpty()

  1816                 ) {

  1817                     return true;

  1818                 }

  1819             }

  1820         }

  1821         return false;

  1822     }

  1824     private void findParamNames(

  1825         Set<String> params, Element e, String url, String jsonParam, StringBuilder... both

  1826     ) {

  1827         int wasJSON = 0;

  1829         for (int pos = 0; ;) {

  1830             int next = url.indexOf('{', pos);

  1831             if (next == -1) {

  1832                 both[wasJSON].append('"')

  1833                     .append(url.substring(pos).replace("\"", "\\\""))

  1834                     .append('"');

  1835                 return;

  1836             }

  1837             int close = url.indexOf('}', next);

  1838             if (close == -1) {

  1839                 error("Unbalanced '{' and '}' in " + url, e);

  1840                 return;

  1841             }

  1842             final String paramName = url.substring(next + 1, close);

  1843             params.add(paramName);

  1844             if (paramName.equals(jsonParam) && !jsonParam.isEmpty()) {

  1845                 both[wasJSON].append('"')

  1846                     .append(url.substring(pos, next).replace("\"", "\\\""))

  1847                     .append('"');

  1848                 wasJSON = 1;

  1849             } else {

  1850                 both[wasJSON].append('"')

  1851                     .append(url.substring(pos, next).replace("\"", "\\\""))

  1852                     .append("\" + ").append(paramName).append(" + ");

  1853             }

  1854             pos = close + 1;

  1855         }

  1856     }

  1858     private static Prprt findPrprt(Prprt[] properties, String propName) {

  1859         for (Prprt p : properties) {

  1860             if (propName.equals(p.name())) {

  1861                 return p;

  1862             }

  1863         }

  1864         return null;

  1865     }

  1867     private boolean isPrimitive(String type) {

  1868         return

  1869             "int".equals(type) ||

  1870             "double".equals(type) ||

  1871             "long".equals(type) ||

  1872             "short".equals(type) ||

  1873             "byte".equals(type) ||

  1874             "char".equals(type) ||

  1875             "boolean".equals(type) ||

  1876             "float".equals(type);

  1877     }

  1879     private static Collection<String> findDerivedFrom(Map<String, Collection<String[]>> propsDeps, String derivedProp) {

  1880         Set<String> names = new HashSet<String>();

  1881         for (Map.Entry<String, Collection<String[]>> e : propsDeps.entrySet()) {

  1882             for (String[] pair : e.getValue()) {

  1883                 if (pair[0].equals(derivedProp)) {

  1884                     names.add(e.getKey());

  1885                     break;

  1886                 }

  1887             }

  1888         }

  1889         return names;

  1890     }

  1892     private Prprt[] createProps(Element e, Property[] arr) {

  1893         Prprt[] ret = Prprt.wrap(processingEnv, e, arr);

  1894         Prprt[] prev = verify.put(e, ret);

  1895         if (prev != null) {

  1896             error("Two sets of properties for ", e);

  1897         }

  1898         return ret;

  1899     }

  1901     private static String strip(String s) {

  1902         int indx = s.indexOf("__");

  1903         if (indx >= 0) {

  1904             return s.substring(0, indx);

  1905         } else {

  1906             return s;

  1907         }

  1908     }

  1910     private String findDataSpecified(ExecutableElement e, OnReceive onR) {

  1911         try {

  1912             return onR.data().getName();

  1913         } catch (MirroredTypeException ex) {

  1914             final TypeMirror tm = ex.getTypeMirror();

  1915             String name;

  1916             final Element te = processingEnv.getTypeUtils().asElement(tm);

  1917             if (te.getKind() == ElementKind.CLASS && tm.getKind() == TypeKind.ERROR) {

  1918                 name = te.getSimpleName().toString();

  1919             } else {

  1920                 name = tm.toString();

  1921             }

  1922             return "java.lang.Object".equals(name) ? null : name;

  1923         } catch (Exception ex) {

  1924             // fallback

  1925         }

  1927         AnnotationMirror found = null;

  1928         for (AnnotationMirror am : e.getAnnotationMirrors()) {

  1929             if (am.getAnnotationType().toString().equals(OnReceive.class.getName())) {

  1930                 found = am;

  1931             }

  1932         }

  1933         if (found == null) {

  1934             return null;

  1935         }

  1937         for (Map.Entry<? extends ExecutableElement, ? extends AnnotationValue> entry : found.getElementValues().entrySet()) {

  1938             ExecutableElement ee = entry.getKey();

  1939             AnnotationValue av = entry.getValue();

  1940             if (ee.getSimpleName().contentEquals("data")) {

  1941                 List<? extends Object> values = getAnnoValues(processingEnv, e, found);

  1942                 for (Object v : values) {

  1943                     String sv = v.toString();

  1944                     if (sv.startsWith("data = ") && sv.endsWith(".class")) {

  1945                         return sv.substring(7, sv.length() - 6);

  1946                     }

  1947                 }

  1948                 return "error";

  1949             }

  1950         }

  1951         return null;

  1952     }

  1954     static List<? extends Object> getAnnoValues(ProcessingEnvironment pe, Element e, AnnotationMirror am) {

  1955         try {

  1956             Class<?> trees = Class.forName("com.sun.tools.javac.api.JavacTrees");

  1957             Method m = trees.getMethod("instance", ProcessingEnvironment.class);

  1958             Object instance = m.invoke(null, pe);

  1959             m = instance.getClass().getMethod("getPath", Element.class, AnnotationMirror.class);

  1960             Object path = m.invoke(instance, e, am);

  1961             m = path.getClass().getMethod("getLeaf");

  1962             Object leaf = m.invoke(path);

  1963             m = leaf.getClass().getMethod("getArguments");

  1964             return (List) m.invoke(leaf);

  1965         } catch (Exception ex) {

  1966             return Collections.emptyList();

  1967         }

  1968     }

  1970     private static String findTargetId(Element e) {

  1971         for (AnnotationMirror m : e.getAnnotationMirrors()) {

  1972             if (m.getAnnotationType().toString().equals(Model.class.getName())) {

  1973                 for (Map.Entry<? extends ExecutableElement, ? extends AnnotationValue> entrySet : m.getElementValues().entrySet()) {

  1974                     ExecutableElement key = entrySet.getKey();

  1975                     AnnotationValue value = entrySet.getValue();

  1976                     if ("targetId()".equals(key.toString())) {

  1977                         return value.toString();

  1978                     }

  1979                 }

  1980             }

  1981         }

  1982         return null;

  1983     }

  1985     private static class Prprt {

  1986         private final Element e;

  1987         private final AnnotationMirror tm;

  1988         private final Property p;

  1990         public Prprt(Element e, AnnotationMirror tm, Property p) {

  1991             this.e = e;

  1992             this.tm = tm;

  1993             this.p = p;

  1994         }

  1996         String name() {

  1997             return p.name();

  1998         }

  2000         boolean array() {

  2001             return p.array();

  2002         }

  2004         String typeName(ProcessingEnvironment env) {

  2005             RuntimeException ex;

  2006             try {

  2007                 return p.type().getName();

  2008             } catch (IncompleteAnnotationException e) {

  2009                 ex = e;

  2010             } catch (AnnotationTypeMismatchException e) {

  2011                 ex = e;

  2012             }

  2013             for (Object v : getAnnoValues(env, e, tm)) {

  2014                 String s = v.toString().replace(" ", "");

  2015                 if (s.startsWith("type=") && s.endsWith(".class")) {

  2016                     return s.substring(5, s.length() - 6);

  2017                 }

  2018             }

  2019             throw ex;

  2020         }

  2023         static Prprt[] wrap(ProcessingEnvironment pe, Element e, Property[] arr) {

  2024             if (arr.length == 0) {

  2025                 return new Prprt[0];

  2026             }

  2028             if (e.getKind() != ElementKind.CLASS) {

  2029                 throw new IllegalStateException("" + e.getKind());

  2030             }

  2031             TypeElement te = (TypeElement)e;

  2032             List<? extends AnnotationValue> val = null;

  2033             for (AnnotationMirror an : te.getAnnotationMirrors()) {

  2034                 for (Map.Entry<? extends ExecutableElement, ? extends AnnotationValue> entry : an.getElementValues().entrySet()) {

  2035                     if (entry.getKey().getSimpleName().contentEquals("properties")) {

  2036                         val = (List)entry.getValue().getValue();

  2037                         break;

  2038                     }

  2039                 }

  2040             }

  2041             if (val == null || val.size() != arr.length) {

  2042                 pe.getMessager().printMessage(Diagnostic.Kind.ERROR, "" + val, e);

  2043                 return new Prprt[0];

  2044             }

  2045             Prprt[] ret = new Prprt[arr.length];

  2046             BIG: for (int i = 0; i < ret.length; i++) {

  2047                 AnnotationMirror am = (AnnotationMirror)val.get(i).getValue();

  2048                 ret[i] = new Prprt(e, am, arr[i]);

  2050             }

  2051             return ret;

  2052         }

  2053     } // end of Prprt

  2055     private static final class GetSet {

  2056         final String name;

  2057         final String getter;

  2058         final String setter;

  2059         final String type;

  2060         final boolean readOnly;

  2061         GetSet(String name, String getter, String setter, String type, boolean readOnly) {

  2062             this.name = name;

  2063             this.getter = getter;

  2064             this.setter = setter;

  2065             this.type = type;

  2066             this.readOnly = readOnly;

  2067         }

  2068     }

  2070     @Override

  2071     public Iterable<? extends Completion> getCompletions(Element element, AnnotationMirror annotation, ExecutableElement member, String userText) {

  2072         final Level l = Level.FINE;

  2073         LOG.log(l, " element: {0}", element);

  2074         LOG.log(l, " annotation: {0}", annotation);

  2075         LOG.log(l, " member: {0}", member);

  2076         LOG.log(l, " userText: {0}", userText);

  2077         LOG.log(l, "str: {0}", annotation.getAnnotationType().toString());

  2078         if (annotation.getAnnotationType().toString().equals(OnReceive.class.getName())) {

  2079             if (member.getSimpleName().contentEquals("method")) {

  2080                 return Arrays.asList(

  2081                     methodOf("GET"),

  2082                     methodOf("POST"),

  2083                     methodOf("PUT"),

  2084                     methodOf("DELETE"),

  2085                     methodOf("HEAD"),

  2086                     methodOf("WebSocket")

  2087                 );

  2088             }

  2089         }

  2091         return super.getCompletions(element, annotation, member, userText);

  2092     }

  2094     private static final Completion methodOf(String method) {

  2095         ResourceBundle rb = ResourceBundle.getBundle("org.netbeans.html.json.impl.Bundle");

  2096         return Completions.of('"' + method + '"', rb.getString("MSG_Completion_" + method));

  2097     }

  2099     private boolean findOnError(ExecutableElement errElem, TypeElement te, String name, String className) {

  2100         String err = null;

  2101         METHODS:

  2102         for (Element e : te.getEnclosedElements()) {

  2103             if (e.getKind() != ElementKind.METHOD) {

  2104                 continue;

  2105             }

  2106             if (!e.getSimpleName().contentEquals(name)) {

  2107                 continue;

  2108             }

  2109             if (!e.getModifiers().contains(Modifier.STATIC)) {

  2110                 errElem = (ExecutableElement) e;

  2111                 err = "Would have to be static";

  2112                 continue;

  2113             }

  2114             ExecutableElement ee = (ExecutableElement) e;

  2115             TypeMirror excType = processingEnv.getElementUtils().getTypeElement(Exception.class.getName()).asType();

  2116             final List<? extends VariableElement> params = ee.getParameters();

  2117             boolean error = false;

  2118             if (params.size() != 2) {

  2119                 error = true;

  2120             } else {

  2121                 String firstType = params.get(0).asType().toString();

  2122                 int lastDot = firstType.lastIndexOf('.');

  2123                 if (lastDot != -1) {

  2124                     firstType = firstType.substring(lastDot + 1);

  2125                 }

  2126                 if (!firstType.equals(className)) {

  2127                     error = true;

  2128                 }

  2129                 if (!processingEnv.getTypeUtils().isAssignable(excType, params.get(1).asType())) {

  2130                     error = true;

  2131                 }

  2132             }

  2133             if (error) {

  2134                 errElem = (ExecutableElement) e;

  2135                 err = "Error method first argument needs to be " + className + " and second Exception";

  2136                 continue;

  2137             }

  2138             return true;

  2139         }

  2140         if (err == null) {

  2141             err = "Cannot find " + name + "(" + className + ", Exception) method in this class";

  2142         }

  2143         error(err, errElem);

  2144         return false;

  2145     }

  2147     private ExecutableElement findWrite(ExecutableElement computedPropElem, TypeElement te, String name, String className) {

  2148         String err = null;

  2149         METHODS:

  2150         for (Element e : te.getEnclosedElements()) {

  2151             if (e.getKind() != ElementKind.METHOD) {

  2152                 continue;

  2153             }

  2154             if (!e.getSimpleName().contentEquals(name)) {

  2155                 continue;

  2156             }

  2157             if (e.equals(computedPropElem)) {

  2158                 continue;

  2159             }

  2160             if (!e.getModifiers().contains(Modifier.STATIC)) {

  2161                 computedPropElem = (ExecutableElement) e;

  2162                 err = "Would have to be static";

  2163                 continue;

  2164             }

  2165             ExecutableElement ee = (ExecutableElement) e;

  2166             if (ee.getReturnType().getKind() != TypeKind.VOID) {

  2167                 computedPropElem = (ExecutableElement) e;

  2168                 err = "Write method has to return void";

  2169                 continue;

  2170             }

  2171             TypeMirror retType = computedPropElem.getReturnType();

  2172             final List<? extends VariableElement> params = ee.getParameters();

  2173             boolean error = false;

  2174             if (params.size() != 2) {

  2175                 error = true;

  2176             } else {

  2177                 String firstType = params.get(0).asType().toString();

  2178                 int lastDot = firstType.lastIndexOf('.');

  2179                 if (lastDot != -1) {

  2180                     firstType = firstType.substring(lastDot + 1);

  2181                 }

  2182                 if (!firstType.equals(className)) {

  2183                     error = true;

  2184                 }

  2185                 if (!processingEnv.getTypeUtils().isAssignable(retType, params.get(1).asType())) {

  2186                     error = true;

  2187                 }

  2188             }

  2189             if (error) {

  2190                 computedPropElem = (ExecutableElement) e;

  2191                 err = "Write method first argument needs to be " + className + " and second " + retType + " or Object";

  2192                 continue;

  2193             }

  2194             return ee;

  2195         }

  2196         if (err == null) {

  2197             err = "Cannot find " + name + "(" + className + ", value) method in this class";

  2198         }

  2199         error(err, computedPropElem);

  2200         return null;

  2201     }

  2203 }

author	Jaroslav Tulach <jtulach@netbeans.org>
	Thu, 11 Feb 2016 06:03:40 +0100
changeset 1050	f18b6cc923d8
parent 1039	3ef632633f36
child 1054	4c40ceb185e5
permissions	-rw-r--r--