/*
 * Copyright 2013-2016 Grzegorz Ligas <ligasgr@gmail.com> and other contributors
 * (see the CONTRIBUTORS file).
 *
 * 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.xquery.parser;

import com.intellij.lang.ASTNode;
import com.intellij.lang.Language;
import com.intellij.lang.ParserDefinition;
import com.intellij.lang.PsiParser;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.project.Project;
import com.intellij.psi.FileViewProvider;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IFileElementType;
import com.intellij.psi.tree.TokenSet;
import org.intellij.xquery.XQueryLanguage;
import org.intellij.xquery.lexer.XQueryLexer;
import org.intellij.xquery.psi.XQueryBasicTypes;
import org.intellij.xquery.psi.XQueryFile;
import org.intellij.xquery.psi.XQueryTypes;
import org.jetbrains.annotations.NotNull;

public class XQueryParserDefinition implements ParserDefinition {
    public static final TokenSet WHITE_SPACES = TokenSet.create(TokenType.WHITE_SPACE);
    public static final TokenSet COMMENTS = TokenSet.create(
            XQueryBasicTypes.EXPR_COMMENT_CONTENT,
            XQueryBasicTypes.EXPR_COMMENT_END,
            XQueryBasicTypes.EXPR_COMMENT_START,
            XQueryBasicTypes.DOC_COMMENT_CONTENT,
            XQueryBasicTypes.DOC_COMMENT_END,
            XQueryBasicTypes.DOC_COMMENT_START
    );
    public static final TokenSet CHARACTER_CONTENTS = TokenSet.create(
            XQueryTypes.ELEMENTCONTENTCHAR,
            XQueryTypes.PRAGMACONTENTCHAR,
            XQueryTypes.CDATASECTIONCONTENTCHAR,
            XQueryTypes.DIRPICONTENTCHAR,
            XQueryTypes.DIRCOMMENTCHAR,
            XQueryTypes.CHAR,
            XQueryTypes.EXPRCOMMENTCONTENT,
            XQueryTypes.STRINGCHAR
    );
    public static final TokenSet STRINGS = TokenSet.create(XQueryTypes.STRINGCHAR, XQueryTypes.CHARREF, XQueryTypes.PREDEFINEDENTITYREF);
    public static final IFileElementType FILE = new IFileElementType(Language.<XQueryLanguage>findInstance
            (XQueryLanguage.class));

    @NotNull
    @Override
    public Lexer createLexer(Project project) {
        return new XQueryLexer();
    }

    @NotNull
    public TokenSet getWhitespaceTokens() {
        return WHITE_SPACES;
    }

    @NotNull
    public TokenSet getCommentTokens() {
        return COMMENTS;
    }

    @NotNull
    public TokenSet getStringLiteralElements() {
        return STRINGS;
    }

    @NotNull
    public PsiParser createParser(final Project project) {
        return new XQueryParser();
    }

    @Override
    public IFileElementType getFileNodeType() {
        return FILE;
    }

    public PsiFile createFile(FileViewProvider viewProvider) {
        return new XQueryFile(viewProvider);
    }

    public SpaceRequirements spaceExistanceTypeBetweenTokens(ASTNode left, ASTNode right) {
        return SpaceRequirements.MAY;
    }

    @NotNull
    public PsiElement createElement(ASTNode node) {
        return XQueryTypes.Factory.createElement(node);
    }
}