/
AppProcessor.java
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/
AppProcessor.java
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package com.woaiqw.appcompiler;
import com.woaiqw.appcompiler.utils.Constants;
import com.woaiqw.appcompiler.utils.Logger;
import com.woaiqw.postprocessingannotation.App;
import java.io.IOException;
import java.io.Writer;
import java.util.LinkedHashSet;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.Filer;
import javax.annotation.processing.ProcessingEnvironment;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.Element;
import javax.lang.model.element.ElementKind;
import javax.lang.model.element.PackageElement;
import javax.lang.model.element.TypeElement;
import javax.tools.JavaFileObject;
public class AppProcessor extends AbstractProcessor {
private Logger logger;
private Filer filer;
@Override
public synchronized void init(ProcessingEnvironment processingEnv) {
super.init(processingEnv);
logger = new Logger(processingEnv.getMessager());
filer = processingEnv.getFiler();
}
@Override
public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
Set<? extends Element> elements = roundEnv.getElementsAnnotatedWith(App.class);
logger.info("start --- processor");
for (Element element : elements) {
generateJavaAppProxyFile(element);
}
logger.info("generate --- end !!!");
return true;
}
private void generateJavaAppProxyFile(Element element) {
if (element.getKind() == ElementKind.CLASS) {
TypeElement classElement = (TypeElement) element;
PackageElement packageElement = (PackageElement) classElement.getEnclosingElement();
String className = classElement.getSimpleName().toString();
String path = packageElement.getQualifiedName().toString() + "." + className;
logger.info("path:" + path);
App annotation = element.getAnnotation(App.class);
String name = annotation.name();
boolean debug = annotation.type();
int priority = annotation.priority();
boolean async = annotation.async();
long delay = annotation.delay();
String generateClassName = name + "$$Proxy";
StringBuilder builder = new StringBuilder();
builder.append("package ");
builder.append(Constants.PACKAGE_NAME);
builder.append(";");
builder.append("\n");
builder.append("\n");
builder.append("/**");
builder.append("\n");
builder.append(Constants.EXPLAIN);
builder.append("\n");
builder.append(" */");
builder.append("\n");
builder.append("\n");
builder.append("public final class ");
builder.append(generateClassName);
builder.append("{");
builder.append("\n");
builder.append("\n");
builder.append(" public static String path = \"");
builder.append(path);
builder.append("\";");
builder.append("\n");
builder.append(" public static String name = \"");
builder.append(name);
builder.append("\";");
builder.append("\n");
builder.append(" public static final boolean type = ");
builder.append(debug);
builder.append(";");
builder.append("\n");
builder.append(" public static final int priority = ");
builder.append(priority);
builder.append(";");
builder.append("\n");
builder.append(" public static final boolean async = ");
builder.append(async);
builder.append(";");
builder.append("\n");
builder.append(" public static final long delay = ");
builder.append(delay);
builder.append(";");
builder.append("\n");
builder.append("\n");
builder.append("}");
try {
JavaFileObject source = filer.createSourceFile(Constants.PACKAGE_NAME + "." + generateClassName);
Writer writer = source.openWriter();
writer.write(builder.toString());
writer.flush();
writer.close();
} catch (IOException e) {
logger.error(e.getMessage());
}
logger.info(">>>" + generateClassName + "<<<");
}
}
@Override
public Set<String> getSupportedAnnotationTypes() {
Set<String> types = new LinkedHashSet<>();
types.add(Constants.ANNOTATION_ACTION_PATH);
return types;
}
@Override
public SourceVersion getSupportedSourceVersion() {
return SourceVersion.RELEASE_8;
}
}