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/*
 * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
 */

package net.sourceforge.pmd.lang.apex.ast;

import java.util.NavigableSet;

import com.google.common.collect.ImmutableSortedSet;
import com.google.summit.ast.modifier.AnnotationModifier;

public final class ASTAnnotation extends AbstractApexNode.Single {

    /**
     * Valid annotations in the Apex language.
     *
     * Includes all annotations from the official
     * documentation, plus
     * 

     *     {@code AllowCertifiedApex}
     *     {@code HiddenFromDoc}
     *     {@code NamespaceGuard}
     *     {@code PermGuard}
     *     {@code PrivateApi}
     *     {@code SfdcOnly}
     *     {@code UseConnectDeserializer}
     *     {@code UseConnectSerializer}
     *     {@code VisibleApiVersion}
     * 
     * for backward compatibility.
     */
    private static final NavigableSet NORMALIZED_ANNOTATION_NAMES =
        ImmutableSortedSet.orderedBy(String.CASE_INSENSITIVE_ORDER).add(
            "AllowCertifiedApex",
            "AuraEnabled",
            "Deprecated",
            "Future",
            "HiddenFromDoc",
            "HttpDelete",
            "HttpGet",
            "HttpPatch",
            "HttpPost",
            "HttpPut",
            "InvocableMethod",
            "InvocableVariable",
            "IsTest",
            "JsonAccess",
            "NamespaceAccessible",
            "NamespaceGuard",
            "PermGuard",
            "PrivateApi",
            "ReadOnly",
            "RemoteAction",
            "RestResource",
            "SfdcOnly",
            "SuppressWarnings",
            "TestSetup",
            "TestVisible",
            "UseConnectDeserializer",
            "UseConnectSerializer",
            "VisibleApiVersion"
    ).build();

    ASTAnnotation(AnnotationModifier annotationModifier) {
        super(annotationModifier);
    }


    @Override
    protected  R acceptApexVisitor(ApexVisitor visitor, P data) {
        return visitor.visit(this, data);
    }

    /**
     * Returns the normalized annotation name for known, valid annotations.
     * The normalized name is in PascalCase. If an unknown annotation is used,
     * the raw name (as in the source code) is returned.
     *
     * @see #getRawName()
     */
    public String getName() {
        // If resolvable to a known name, return the case-normalized name.
        String rawName = getRawName();
        if (NORMALIZED_ANNOTATION_NAMES.contains(rawName)) {
            return NORMALIZED_ANNOTATION_NAMES.floor(rawName);
        }
        return rawName;
    }

    /**
     * Returns the annotation name as it appears in the source code.
     * This allows to verify the casing.
     *
     * @since 7.1.0
     */
    public String getRawName() {
        return node.getName().getString();
    }

    @Override
    public String getImage() {
        return getName();
    }

    public boolean isResolved() {
        return NORMALIZED_ANNOTATION_NAMES.contains(getRawName());
    }
}