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- /*
- * Copyright 2011, The gwtquery team.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
- package com.google.gwt.query.rebind;
-
- import com.google.gwt.core.client.JavaScriptObject;
- import com.google.gwt.core.ext.Generator;
- import com.google.gwt.core.ext.GeneratorContext;
- import com.google.gwt.core.ext.TreeLogger;
- import com.google.gwt.core.ext.TreeLogger.Type;
- import com.google.gwt.core.ext.UnableToCompleteException;
- import com.google.gwt.core.ext.typeinfo.JArrayType;
- import com.google.gwt.core.ext.typeinfo.JClassType;
- import com.google.gwt.core.ext.typeinfo.JMethod;
- import com.google.gwt.core.ext.typeinfo.JParameter;
- import com.google.gwt.core.ext.typeinfo.JParameterizedType;
- import com.google.gwt.core.ext.typeinfo.JType;
- import com.google.gwt.core.ext.typeinfo.TypeOracle;
- import com.google.gwt.query.client.Function;
- import com.google.gwt.query.client.IsProperties;
- import com.google.gwt.query.client.Properties;
- import com.google.gwt.query.client.builders.JsonBuilder;
- import com.google.gwt.query.client.builders.JsonBuilderBase;
- import com.google.gwt.query.client.builders.JsonFactory;
- import com.google.gwt.query.client.builders.Name;
- import com.google.gwt.query.client.js.JsUtils;
- import com.google.gwt.user.rebind.ClassSourceFileComposerFactory;
- import com.google.gwt.user.rebind.SourceWriter;
-
- import java.io.PrintWriter;
- import java.util.ArrayList;
- import java.util.Collection;
- import java.util.HashSet;
- import java.util.Iterator;
- import java.util.List;
- import java.util.Set;
-
- /**
- */
- public class JsonBuilderGenerator extends Generator {
-
- static JClassType functionType;
- static JClassType jsonBuilderType;
- static JClassType settingsType;
- static JClassType jsType;
- static JClassType listType;
- static JClassType stringType;
- static JClassType jsonFactoryType;
-
- public static String capitalize(String s) {
- if (s.length() == 0)
- return s;
- return s.substring(0, 1).toUpperCase() + s.substring(1).toLowerCase();
- }
-
- public static String classNameToJsonName(String name) {
- return deCapitalize(name.replaceAll("^.*[\\.\\$_]", ""));
- }
-
- public static String deCapitalize(String s) {
- return s == null || s.isEmpty() ? s :
- (s.substring(0, 1).toLowerCase() + (s.length() > 1 ? s.substring(1) : ""));
- }
-
- TypeOracle oracle;
-
- public String generate(TreeLogger treeLogger,
- GeneratorContext generatorContext, String requestedClass)
- throws UnableToCompleteException {
-
- oracle = generatorContext.getTypeOracle();
- JClassType clazz = oracle.findType(requestedClass);
-
- jsonBuilderType = oracle.findType(JsonBuilder.class.getName());
- settingsType = oracle.findType(IsProperties.class.getName());
- stringType = oracle.findType(String.class.getName());
- jsType = oracle.findType(JavaScriptObject.class.getName());
- listType = oracle.findType(List.class.getName());
- functionType = oracle.findType(Function.class.getName());
- jsonFactoryType = oracle.findType(JsonFactory.class.getName());
-
- String t[] = generateClassName(clazz);
-
- boolean isFactory = clazz.isAssignableTo(jsonFactoryType);
-
- SourceWriter sw =
- getSourceWriter(treeLogger, generatorContext, t[0], t[1], isFactory, requestedClass);
- if (sw != null) {
- if (isFactory) {
- generateCreateMethod(sw, treeLogger);
- } else {
- Set<String> attrs = new HashSet<String>();
- for (JMethod method : clazz.getInheritableMethods()) {
- String methName = method.getName();
- // skip method from JsonBuilder
- if (jsonBuilderType.findMethod(method.getName(), method.getParameterTypes()) != null ||
- settingsType.findMethod(method.getName(), method.getParameterTypes()) != null) {
- continue;
- }
-
- Name nameAnnotation = method.getAnnotation(Name.class);
- String name = nameAnnotation != null
- ? nameAnnotation.value()
- : methName.replaceFirst("^(get|set)", "");
- if (nameAnnotation == null) {
- name = name.substring(0, 1).toLowerCase() + name.substring(1);
- }
- attrs.add(name);
- generateMethod(sw, method, name, treeLogger);
- }
- generateFieldNamesMethod(sw, attrs, treeLogger);
- generateToJsonMethod(sw, t[3], treeLogger);
- }
- sw.commit(treeLogger);
- }
- return t[2];
- }
-
- public String[] generateClassName(JType t) {
- String[] ret = new String[4];
- JClassType c = t.isClassOrInterface();
- ret[0] = c.getPackage().getName();
- ret[1] = c.getName().replace('.', '_') + "_JsonBuilder";
- ret[2] = ret[0] + "." + ret[1];
- ret[3] = classNameToJsonName(c.getName());
- return ret;
- }
-
- public void generateFieldNamesMethod(SourceWriter sw, Collection<String> attrs, TreeLogger logger) {
- String ret = "";
- for (Iterator<String> it = attrs.iterator(); it.hasNext();) {
- ret += (ret.isEmpty() ? "" : ",") + "\"" + it.next() + "\"";
- }
- sw.println("{ fieldNames = new String[]{" + ret + "}; }");
- }
-
- public void generateMethod(SourceWriter sw, JMethod method, String name, TreeLogger logger)
- throws UnableToCompleteException {
- String ifaceName = method.getEnclosingType().getQualifiedSourceName();
-
- String retType = method.getReturnType().getParameterizedQualifiedSourceName();
- sw.print("public final " + retType + " " + method.getName());
- JParameter[] params = method.getParameters();
- if (params.length == 0) {
- JArrayType arr = method.getReturnType().isArray();
- JParameterizedType list = method.getReturnType().isParameterized();
-
- sw.println("() {");
- sw.indent();
- if (retType.matches("(java.lang.Boolean|boolean)")) {
- sw.println("return p.getBoolean(\"" + name + "\");");
- } else if (retType.matches("java.util.Date")) {
- sw.println("return new Date(java.lang.Long.parseLong(p.getStr(\"" + name + "\")));");
- } else if (method.getReturnType().isPrimitive() != null) {
- sw.println("return (" + retType + ")p.getFloat(\"" + name + "\");");
- } else if (retType.equals("java.lang.Character")) {
- sw.println("return (char) p.getFloat(\"" + name + "\");");
- } else if (retType.equals("java.lang.Byte")) {
- sw.println("return (byte) p.getFloat(\"" + name + "\");");
- } else if (retType.equals("java.lang.Integer")) {
- sw.println("return (int) p.getFloat(\"" + name + "\");");
- } else if (retType.equals("java.lang.Float")) {
- sw.println("return p.getFloat(\"" + name + "\");");
- } else if (retType.equals("java.lang.Double")) {
- sw.println("return (double) p.getFloat(\"" + name + "\");");
- } else if (retType.equals("java.lang.Long")) {
- sw.println("return (long) p.getFloat(\"" + name + "\");");
- } else if (retType.equals("java.lang.Byte")) {
- sw.println("return (byte) p.getFloat(\"" + name + "\");");
- } else if (isTypeAssignableTo(method.getReturnType(), stringType)) {
- sw.println("return p.getStr(\"" + name + "\");");
- } else if (isTypeAssignableTo(method.getReturnType(), jsonBuilderType)) {
- String q = method.getReturnType().getQualifiedSourceName();
- sw.println("return " + "getIsPropertiesBase(getPropertiesBase(\"" + name + "\")," + q + ".class);");
- } else if (isTypeAssignableTo(method.getReturnType(), settingsType)) {
- String q = method.getReturnType().getQualifiedSourceName();
- sw.println("return " + "((" + q + ")getPropertiesBase(\"" + name + "\"));");
- } else if (retType.equals(Properties.class.getName())) {
- sw.println("return getPropertiesBase(\"" + name + "\");");
- } else if (isTypeAssignableTo(method.getReturnType(), jsType)) {
- sw.println("return p.getJavaScriptObject(\"" + name + "\");");
- } else if (isTypeAssignableTo(method.getReturnType(), functionType)) {
- sw.println("return p.getFunction(\"" + name + "\");");
- } else if (arr != null || list != null) {
- JType type = arr != null ? arr.getComponentType()
- : list.getTypeArgs()[0];
- boolean buildType = isTypeAssignableTo(type, jsonBuilderType);
- String t = type.getQualifiedSourceName();
- sw.println("JsArrayMixed a = p.getArray(\"" + name + "\");");
- sw.println("int l = a == null ? 0 : a.length();");
- String ret;
- if (buildType) {
- ret = "getIsPropertiesArrayBase(a, new " + t + "[l], " + t + ".class)";
- } else {
- ret = "getArrayBase(\"" + name + "\", new " + t + "[l], " + t + ".class)";
- }
- if (arr != null) {
- sw.println("return " + ret + ";");
- } else {
- sw.println("return a == null ? null : Arrays.asList(" + ret + ");");
- }
- } else if (method.getReturnType().isEnum() != null) {
- sw.println("return " + method.getReturnType().getQualifiedSourceName()
- + ".valueOf(p.getStr(\"" + name + "\"));");
- } else {
- sw.println("System.err.println(\"JsonBuilderGenerator WARN: unknown return type "
- + retType + " " + ifaceName + "." + name + "()\"); ");
- // We return the object because probably the user knows how to handle it
- sw.println("return p.get(\"" + name + "\");");
- }
- sw.outdent();
- sw.println("}");
- } else if (params.length == 1) {
- JType type = params[0].getType();
- JArrayType arr = type.isArray();
- JParameterizedType list = type.isParameterized();
-
- sw.print("(" + type.getParameterizedQualifiedSourceName() + " a)");
- sw.println("{");
- sw.indent();
- if (arr != null || list != null) {
- String a = "a";
- if (list != null) {
- a = "a.toArray(new " + list.getTypeArgs()[0].getQualifiedSourceName()
- + "[0])";
- }
- sw.println("setArrayBase(\"" + name + "\", " + a + ");");
- } else if (type.getParameterizedQualifiedSourceName().matches("java.util.Date")) {
- sw.println("p.setNumber(\"" + name + "\", a.getTime());");
- } else if (type
- .getParameterizedQualifiedSourceName()
- .matches(
- "(java.lang.(Character|Long|Double|Integer|Float|Byte)|(char|long|double|int|float|byte))")) {
- sw.println("p.setNumber(\"" + name + "\", a);");
- } else if (type.getParameterizedQualifiedSourceName().matches("(java.lang.Boolean|boolean)")) {
- sw.println("p.setBoolean(\"" + name + "\", a);");
- } else if (type.getParameterizedQualifiedSourceName().matches(
- "com.google.gwt.query.client.Function")) {
- sw.println("p.setFunction(\"" + name + "\", a);");
- } else if (type.isEnum() != null) {
- sw.println("p.set(\"" + name + "\", a.name());");
- } else {
- sw.println("set(\"" + name + "\", a);");
- }
- if (!"void".equals(retType)) {
- if (isTypeAssignableTo(method.getReturnType(),
- method.getEnclosingType())) {
- sw.println("return this;");
- } else {
- sw.println("return null;");
- }
- }
- sw.outdent();
- sw.println("}");
- }
- }
-
- public void generateToJsonMethod(SourceWriter sw, String name, TreeLogger logger) {
- sw.println("public final String getJsonName() {return \"" + name + "\";}");
- }
-
- protected SourceWriter getSourceWriter(TreeLogger logger,
- GeneratorContext context, String packageName, String className, boolean isFactory,
- String... interfaceNames) {
- PrintWriter printWriter = context.tryCreate(logger, packageName, className);
- if (printWriter == null) {
- return null;
- }
- ClassSourceFileComposerFactory composerFactory = new ClassSourceFileComposerFactory(
- packageName, className);
- if (!isFactory) {
- composerFactory.setSuperclass(JsonBuilderBase.class.getName() +
- "<" + packageName + "." + className + ">");
- }
- composerFactory.addImport("com.google.gwt.query.client.js.*");
- composerFactory.addImport("com.google.gwt.query.client.*");
- composerFactory.addImport("com.google.gwt.core.client.*");
- composerFactory.addImport("com.google.gwt.dom.client.*");
- composerFactory.addImport("java.util.*");
-
- for (String interfaceName : interfaceNames) {
- composerFactory.addImplementedInterface(interfaceName);
- }
- return composerFactory.createSourceWriter(context, printWriter);
- }
-
- public boolean isTypeAssignableTo(JType t, JClassType o) {
- JClassType c = t.isClassOrInterface();
- return (c != null && c.isAssignableTo(o));
- }
-
- private void generateCreateMethod(SourceWriter sw, TreeLogger logger) {
- sw.println("public <T extends " + JsonBuilder.class.getName() + "> T create(Class<T> clz) {");
- sw.indent();
- ArrayList<JClassType> types = new ArrayList<JClassType>();
- for (JClassType t : oracle.getTypes()) {
- if (t.isInterface() != null && t.isAssignableTo(jsonBuilderType)) {
- if (t.isPublic()) {
- sw.println("if (clz == " + t.getQualifiedSourceName() + ".class) return GWT.<T>create("
- + t.getQualifiedSourceName() + ".class);");
- } else {
- logger.log(Type.WARN, t.getQualifiedSourceName() + " is not public");
- }
- types.add(t);
- }
- }
- sw.println("GQuery.console.error(\"GQ.create: not registered class :\" + clz);");
- sw.println("return null;");
- sw.outdent();
- sw.println("}");
- sw.println("public " + IsProperties.class.getName() + " create(String s) {");
- sw.indent();
- sw.println("return (" + IsProperties.class.getName() + ")" + JsUtils.class.getName()
- + ".parseJSON(s);");
- sw.outdent();
- sw.println("}");
- sw.println("public " + IsProperties.class.getName() + " create() {");
- sw.indent();
- sw.println("return " + Properties.class.getName() + ".create();");
- sw.outdent();
- sw.println("}");
- }
- }
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