/*
 * Copyright 2000-2013 JetBrains s.r.o.
 *
 * 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.intellij.coldFusion.UI.editorActions.matchers;

import com.intellij.coldFusion.model.lexer.CfscriptTokenTypes;
import com.intellij.lang.BracePair;
import com.intellij.lang.PairedBraceMatcher;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.tree.IElementType;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

/**
 * Created by Lera Nikolaenko
 * Date: 27.10.2008
 */
public class CfmlPairedBraceMatcher implements PairedBraceMatcher {
  private static final BracePair[] PAIRS = new BracePair[]{
    new BracePair(CfscriptTokenTypes.L_BRACKET, CfscriptTokenTypes.R_BRACKET, false),
    new BracePair(CfscriptTokenTypes.L_SQUAREBRACKET, CfscriptTokenTypes.R_SQUAREBRACKET, false),
    new BracePair(CfscriptTokenTypes.L_CURLYBRACKET, CfscriptTokenTypes.R_CURLYBRACKET, true),
    new BracePair(CfscriptTokenTypes.OPENSHARP, CfscriptTokenTypes.CLOSESHARP, true)
  };

  @NotNull
  public BracePair[] getPairs() {
    return PAIRS;
  }

  public boolean isPairedBracesAllowedBeforeType(@NotNull final IElementType lbraceType, @Nullable final IElementType tokenType) {
    return lbraceType != CfscriptTokenTypes.L_CURLYBRACKET;
  }

  public int getCodeConstructStart(final PsiFile file, int openingBraceOffset) {
    PsiElement element = file.findElementAt(openingBraceOffset);
    if (element == null || element instanceof PsiFile) return openingBraceOffset;
    PsiElement parent = element.getParent();
    return parent.getTextRange().getStartOffset();
  }
}