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/*
* Copyright 2014 Google LLC
*
* 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.auto.value.processor;
import com.google.errorprone.annotations.FormatMethod;
import javax.annotation.processing.Messager;
import javax.annotation.processing.ProcessingEnvironment;
import javax.lang.model.element.Element;
import javax.tools.Diagnostic;
/**
* Handle error reporting for an annotation processor.
*
* @author Éamonn McManus
*/
class ErrorReporter {
private final Messager messager;
private int errorCount;
ErrorReporter(ProcessingEnvironment processingEnv) {
this.messager = processingEnv.getMessager();
}
/**
* Issue a compilation note.
*
* @param e the element to which it pertains
* @param format the format string for the text of the note
* @param args arguments for the format string
*/
@FormatMethod
void reportNote(Element e, String format, Object... args) {
messager.printMessage(Diagnostic.Kind.NOTE, String.format(format, args), e);
}
/**
* Issue a compilation warning.
*
* @param e the element to which it pertains
* @param format the format string for the text of the warning
* @param args arguments for the format string
*/
@FormatMethod
void reportWarning(Element e, String format, Object... args) {
messager.printMessage(Diagnostic.Kind.WARNING, String.format(format, args), e);
}
/**
* Issue a compilation error. This method does not throw an exception, since we want to continue
* processing and perhaps report other errors. It is a good idea to introduce a test case in
* CompilationTest for any new call to reportError(...) to ensure that we continue correctly after
* an error.
*
* @param e the element to which it pertains
* @param format the format string for the text of the warning
* @param args arguments for the format string
*/
@FormatMethod
void reportError(Element e, String format, Object... args) {
messager.printMessage(Diagnostic.Kind.ERROR, String.format(format, args), e);
errorCount++;
}
/**
* Issue a compilation error and abandon the processing of this class. This does not prevent the
* processing of other classes.
*
* @param e the element to which it pertains
* @param format the format string for the text of the error
* @param args arguments for the format string
*/
@FormatMethod
void abortWithError(Element e, String format, Object... args) {
reportError(e, format, args);
throw new AbortProcessingException();
}
/** The number of errors that have been output by calls to {@link #reportError}. */
int errorCount() {
return errorCount;
}
/** Abandon the processing of this class if any errors have been output. */
void abortIfAnyError() {
if (errorCount > 0) {
throw new AbortProcessingException();
}
}
}
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