232 lines
8.0 KiB
Java
232 lines
8.0 KiB
Java
/*
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* Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.arialyy.compiler;
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import com.arialyy.annotations.Download;
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import com.arialyy.annotations.Upload;
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import com.squareup.javapoet.ClassName;
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import com.squareup.javapoet.CodeBlock;
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import com.squareup.javapoet.FieldSpec;
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import com.squareup.javapoet.JavaFile;
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import com.squareup.javapoet.MethodSpec;
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import com.squareup.javapoet.ParameterSpec;
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import com.squareup.javapoet.ParameterizedTypeName;
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import com.squareup.javapoet.TypeSpec;
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import java.io.IOException;
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import java.lang.annotation.Annotation;
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import java.util.HashMap;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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import javax.annotation.processing.Filer;
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import javax.lang.model.element.Modifier;
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/**
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* Created by lyy on 2017/9/6.
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* 任务事件代理文件
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*
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* <pre>
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* <code>
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* package com.arialyy.simple.download;
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*
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* import com.arialyy.aria.core.download.DownloadTask;
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* import com.arialyy.aria.core.scheduler.AbsSchedulerListener;
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*
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* public final class SingleTaskActivity$$DownloadListenerProxy extends
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* AbsSchedulerListener<DownloadTask> {
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* private SingleTaskActivity obj;
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*
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* public void onPre(final DownloadTask task) {
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* obj.onPre((DownloadTask)task);
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* }
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*
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* public void onTaskStart(final DownloadTask task) {
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* obj.onStart((DownloadTask)task);
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* }
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*
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* public void setListener(final Object obj) {
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* this.obj = (SingleTaskActivity)obj;
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* }
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* }
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* </code>
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* </pre>
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*/
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final class EventProxyFiler {
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private Filer mFiler;
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private ParamObtainUtil mPbUtil;
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EventProxyFiler(Filer filer, ParamObtainUtil pbUtil) {
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mFiler = filer;
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mPbUtil = pbUtil;
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}
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/**
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* 创建任务事件代理文件
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*/
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void createEventProxyFile() throws IOException {
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Set<String> keys = mPbUtil.getMethodParams().keySet();
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for (String key : keys) {
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ProxyClassParam entity = mPbUtil.getMethodParams().get(key);
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JavaFile jf = JavaFile.builder(entity.packageName, createProxyClass(entity)).build();
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createFile(jf);
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}
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}
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/**
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* 创建代理方法
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*
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* @param taskEnum 任务类型枚举{@link TaskEnum}
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* @param annotation {@link Download}、{@link Upload}
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* @param methodName 被代理类注解的方法名
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*/
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private MethodSpec createProxyMethod(TaskEnum taskEnum, Class<? extends Annotation> annotation,
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String methodName) {
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ClassName task = ClassName.get(taskEnum.getPkg(), taskEnum.getClassName());
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ParameterSpec taskParam =
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ParameterSpec.builder(task, "task").addModifiers(Modifier.FINAL).build();
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String callCode;
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if (taskEnum == TaskEnum.DOWNLOAD_GROUP_SUB) {
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callCode = "task, subEntity";
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} else {
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callCode = "task";
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}
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StringBuilder sb = new StringBuilder();
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sb.append("Set<String> keys = keyMapping.get(\"").append(methodName).append("\");\n");
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sb.append("if (keys != null) {\n\tif (keys.contains(task.getKey())) {\n")
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.append("\t\tobj.")
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.append(methodName)
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.append("((")
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.append(taskEnum.getClassName())
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.append(")")
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.append(callCode)
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.append(");\n\t}\n} else {\n")
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.append("\tobj.")
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.append(methodName)
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.append("((")
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.append(taskEnum.getClassName())
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.append(")")
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.append(callCode)
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.append(");\n}\n");
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MethodSpec.Builder builder = MethodSpec.methodBuilder(annotation.getSimpleName())
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.addModifiers(Modifier.PUBLIC)
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.returns(void.class)
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.addParameter(taskParam)
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.addAnnotation(Override.class)
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.addCode(sb.toString());
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//任务组接口
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if (taskEnum == TaskEnum.DOWNLOAD_GROUP_SUB) {
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ClassName subTask = ClassName.get(TaskEnum.DOWNLOAD_ENTITY.pkg, TaskEnum.DOWNLOAD_ENTITY.className);
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ParameterSpec subTaskParam =
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ParameterSpec.builder(subTask, "subEntity").addModifiers(Modifier.FINAL).build();
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builder.addParameter(subTaskParam);
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}
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return builder.build();
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}
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/**
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* 创建代理类
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*/
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private TypeSpec createProxyClass(ProxyClassParam entity) {
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TypeSpec.Builder builder =
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TypeSpec.classBuilder(entity.proxyClassName).addModifiers(Modifier.PUBLIC, Modifier.FINAL);
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//添加被代理的类的字段
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ClassName obj = ClassName.get(entity.packageName, entity.className);
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FieldSpec observerField = FieldSpec.builder(obj, "obj").addModifiers(Modifier.PRIVATE).build();
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builder.addField(observerField);
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//添加url映射表
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FieldSpec mappingField = FieldSpec.builder(
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ParameterizedTypeName.get(ClassName.get(Map.class), ClassName.get(String.class),
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ParameterizedTypeName.get(ClassName.get(Set.class), ClassName.get(String.class))),
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"keyMapping").addModifiers(Modifier.PRIVATE).initializer("new $T()", HashMap.class).build();
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builder.addField(mappingField);
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//添加注解方法
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for (TaskEnum te : entity.methods.keySet()) {
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Map<Class<? extends Annotation>, String> temp = entity.methods.get(te);
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if (temp != null) {
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for (Class<? extends Annotation> annotation : temp.keySet()) {
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MethodSpec method = createProxyMethod(te, annotation, temp.get(annotation));
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builder.addMethod(method);
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}
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}
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}
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//增加构造函数
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CodeBlock.Builder cb = CodeBlock.builder();
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cb.add("Set<String> set = null;\n");
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for (String methodName : entity.keyMappings.keySet()) {
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//PrintLog.getInstance().info("methodName ====> " + methodName);
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Set<String> keys = entity.keyMappings.get(methodName);
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if (keys == null || keys.size() == 0) continue;
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StringBuilder sb = new StringBuilder();
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sb.append("set = new $T();\n");
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for (String key : keys) {
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if (key.isEmpty()) continue;
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sb.append("set.add(\"").append(key).append("\");\n");
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}
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sb.append("keyMapping.put(\"").append(methodName).append("\", ").append("set);\n");
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cb.add(sb.toString(), ClassName.get(HashSet.class));
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}
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MethodSpec structure =
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MethodSpec.constructorBuilder().addModifiers(Modifier.PUBLIC).addCode(cb.build()).build();
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builder.addMethod(structure);
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//添加设置代理的类
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ParameterSpec parameterSpec =
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ParameterSpec.builder(Object.class, "obj").addModifiers(Modifier.FINAL).build();
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MethodSpec listener = MethodSpec.methodBuilder(ProxyConstance.SET_LISTENER)
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.addModifiers(Modifier.PUBLIC)
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.returns(void.class)
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.addParameter(parameterSpec)
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.addAnnotation(Override.class)
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.addCode("this.obj = (" + entity.className + ")obj;\n")
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.build();
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builder.addJavadoc("该文件为Aria自动生成的代理文件，请不要修改该文件的任何代码！\n");
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//创建父类参数
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ClassName superClass = ClassName.get("com.arialyy.aria.core.scheduler", "AbsSchedulerListener");
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//主任务泛型参数
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ClassName taskTypeVariable =
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ClassName.get(entity.mainTaskEnum.pkg, entity.mainTaskEnum.className);
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//子任务泛型参数
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ClassName subTaskTypeVariable =
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ClassName.get(entity.subTaskEnum.pkg, entity.subTaskEnum.className);
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builder.superclass(
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ParameterizedTypeName.get(superClass, taskTypeVariable, subTaskTypeVariable));
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builder.addMethod(listener);
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return builder.build();
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}
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private void createFile(JavaFile jf) throws IOException {
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if (ProxyConstance.DEBUG) {
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// 如果需要在控制台打印生成的文件，则去掉下面的注释
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jf.writeTo(System.out);
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} else {
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jf.writeTo(mFiler);
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}
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}
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}
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