package com.qianwen.smart.core.auto.common;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Set;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.AnnotationMirror;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import javax.tools.Diagnostic;

public abstract class AbstractBladeProcessor extends AbstractProcessor {
  public SourceVersion getSupportedSourceVersion() {
    return SourceVersion.latestSupported();
  }
  
  public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
    try {
      return processImpl(annotations, roundEnv);
    } catch (Exception e) {
      fatalError(e);
      return false;
    } 
  }
  
  protected abstract boolean processImpl(Set<? extends TypeElement> paramSet, RoundEnvironment paramRoundEnvironment);
  
  protected void log(String msg) {
    if (this.processingEnv.getOptions().containsKey("debug"))
      this.processingEnv.getMessager().printMessage(Diagnostic.Kind.NOTE, msg); 
  }
  
  protected void error(String msg, Element element, AnnotationMirror annotation) {
    this.processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, msg, element, annotation);
  }
  
  protected void fatalError(Exception e) {
    StringWriter writer = new StringWriter();
    e.printStackTrace(new PrintWriter(writer));
    fatalError(writer.toString());
  }
  
  protected void fatalError(String msg) {
    this.processingEnv.getMessager().printMessage(Diagnostic.Kind.ERROR, "FATAL ERROR: " + msg);
  }
}