/*
 * Copyright 2006 Sascha Weinreuter
 *
 * 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 org.intellij.lang.regexp.psi.impl;

import com.intellij.lang.ASTNode;

import org.jetbrains.annotations.NotNull;

import org.intellij.lang.regexp.psi.RegExpClass;
import org.intellij.lang.regexp.psi.RegExpElementVisitor;
import org.intellij.lang.regexp.psi.RegExpClassElement;
import org.intellij.lang.regexp.RegExpTT;
import org.intellij.lang.regexp.RegExpElementTypes;

public class RegExpClassImpl extends RegExpElementImpl implements RegExpClass {

    public RegExpClassImpl(ASTNode astNode) {
        super(astNode);
    }

    public boolean isNegated() {
        final ASTNode node = getNode().getFirstChildNode();
        return node != null && node.getElementType() == RegExpTT.CARET;
    }

    @NotNull
    public RegExpClassElement[] getElements() {
        final ASTNode[] nodes = getNode().getChildren(RegExpElementTypes.CLASS_ELEMENTS);
        RegExpClassElement[] e = new RegExpClassElement[nodes.length];
        for (int i = 0; i < e.length; i++) {
            e[i] = (RegExpClassElement)nodes[i].getPsi();
        }
        return e;
    }

    public void accept(RegExpElementVisitor visitor) {
        visitor.visitRegExpClass(this);
    }
}