/*
* Copyright (c) 2013 Patrick Scheibe
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package de.halirutan.mathematica.parsing.prattparser.parselets;
import com.intellij.lang.PsiBuilder;
import com.intellij.psi.tree.IElementType;
import de.halirutan.mathematica.parsing.MathematicaElementTypes;
import de.halirutan.mathematica.parsing.prattparser.CriticalParserError;
import de.halirutan.mathematica.parsing.prattparser.MathematicaParser;
/**
* Parses __expr. Note expr must not be present.
*
* @author patrick (3/27/13)
*/
public class PrefixBlankSequenceParselet implements PrefixParselet {
private final int myPrecedence;
public PrefixBlankSequenceParselet(int precedence) {
this.myPrecedence = precedence;
}
@Override
public MathematicaParser.Result parse(MathematicaParser parser) throws CriticalParserError {
PsiBuilder.Marker blankMark = parser.mark();
IElementType token = MathematicaElementTypes.BLANK_SEQUENCE_EXPRESSION;
parser.advanceLexer();
MathematicaParser.Result result = parser.parseExpression(myPrecedence);
blankMark.done(token);
return MathematicaParser.result(blankMark, token, !result.isValid() || result.isParsed());
}
public int getPrecedence() {
return myPrecedence;
}
}