org.eclipselabs.nullness.equinox.JavaProjectAnnotationSet.java Source code

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Here is the source code for org.eclipselabs.nullness.equinox.JavaProjectAnnotationSet.java

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/*******************************************************************************
 * Copyright (c) 2012 Sebastian Zarnekow (http://zarnekow.blogspot.de) and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Authors:
 *   Sebastian Zarnekow - Initial implementation
 *******************************************************************************/
package org.eclipselabs.nullness.equinox;

import java.util.Map;

import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.JavaCore;

public class JavaProjectAnnotationSet implements NullnessAnnotationSet {

    private final String defaultNonNullAnnotation;
    private final String nonNullAnnotation;
    private final String nullableAnnotation;

    public JavaProjectAnnotationSet(IJavaProject project) {
        Map<?, ?> options = project.getOptions(true);
        defaultNonNullAnnotation = getOption(options, JavaCore.COMPILER_NONNULL_BY_DEFAULT_ANNOTATION_NAME);
        nonNullAnnotation = getOption(options, JavaCore.COMPILER_NONNULL_ANNOTATION_NAME);
        nullableAnnotation = getOption(options, JavaCore.COMPILER_NULLABLE_ANNOTATION_NAME);
    }

    private String getOption(Map<?, ?> options, String key) {
        Object result = options.get(key);
        return result == null ? null : String.valueOf(result);
    }

    @Override
    public boolean isDefaultNonNullAnnotation(String typeName) {
        return isAnnotation(defaultNonNullAnnotation, typeName);
    }

    private boolean isAnnotation(String expected, String typeName) {
        return expected != null && expected.equals(typeName);
    }

    @Override
    public boolean isNullableAnnotation(String typeName) {
        return isAnnotation(nullableAnnotation, typeName);
    }

    @Override
    public boolean isNonNullAnnotation(String typeName) {
        return isAnnotation(nonNullAnnotation, typeName);
    }

    @Override
    public boolean isDefaultNullableAnnotation(String typeName) {
        return false;
    }

}