XturtleFormatter.java

/*******************************************************************************
 * Copyright (c) 2013 AKSW Xturtle Project, itemis AG (http://www.itemis.eu).
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 ******************************************************************************/
/*
 * generated by Xtext
 */
package de.itemis.tooling.xturtle.formatting;

import org.eclipse.xtext.formatting.impl.AbstractDeclarativeFormatter;
import org.eclipse.xtext.formatting.impl.FormattingConfig;

import com.google.inject.Inject;

import de.itemis.tooling.xturtle.services.XturtleGrammarAccess;

/**
 * This class contains custom formatting description.
 * 
 * see : http://www.eclipse.org/Xtext/documentation/latest/xtext.html#formatting
 * on how and when to use it 
 * 
 * Also see {@link org.eclipse.xtext.xtext.XtextFormattingTokenSerializer} as an example
 */
public class XturtleFormatter extends AbstractDeclarativeFormatter {
	
	@Inject
	XturtleGrammarAccess grammarAccess;

	//formatting is extremely problematic as white spaces are significant as separators...
	//use completely separate formatter? try rewriting the grammar? I woudn't like to
	//use my own lexer
	@Override
	protected void configureFormatting(FormattingConfig c) {
		c.setAutoLinewrap(200);
		c.setLinewrap(0, 1, 2).before(grammarAccess.getSL_COMMENTRule());

		//line wrap between direcives
		c.setLinewrap(1).between(grammarAccess.getDirectiveAccess().getTRIPELENDTerminalRuleCall_1(),grammarAccess.getPrefixIdAccess().getPrefixKeyword_0());
		c.setLinewrap(1).between(grammarAccess.getDirectiveAccess().getTRIPELENDTerminalRuleCall_1(),grammarAccess.getBaseAccess().getBaseKeyword_0());
		//spaces in prefix definition
		c.setNoSpace().around(grammarAccess.getPrefixIdAccess().getColonKeyword_1_1());
//		c.setSpace(" ").after(grammarAccess.getPrefixKeywordRule());

		//line wraps between directive and triple
		c.setLinewrap(2).between(grammarAccess.getDirectiveAccess().getTRIPELENDTerminalRuleCall_1(),grammarAccess.getUriDefRule());
		c.setLinewrap(2).between(grammarAccess.getDirectiveAccess().getTRIPELENDTerminalRuleCall_1(),grammarAccess.getQNameDefRule());
		//linw wraps between triple and directive
		c.setLinewrap(2).between(grammarAccess.getTriplesAccess().getTRIPELENDTerminalRuleCall_2(),grammarAccess.getPrefixIdAccess().getPrefixKeyword_0());
		c.setLinewrap(2).between(grammarAccess.getTriplesAccess().getTRIPELENDTerminalRuleCall_2(),grammarAccess.getBaseAccess().getBaseKeyword_0());

		//line wraps between triples
		c.setLinewrap(1,2,2).between(grammarAccess.getTriplesAccess().getTRIPELENDTerminalRuleCall_2(),grammarAccess.getUriDefRule());
		c.setLinewrap(1,2,2).between(grammarAccess.getTriplesAccess().getTRIPELENDTerminalRuleCall_2(),grammarAccess.getQNameDefRule());

		//line wraps in predicate object list of triple
		c.setLinewrap(0,0,1).after(grammarAccess.getQNameDefRule());
		c.setLinewrap(0,0,1).after(grammarAccess.getUriDefRule());
		c.setIndentationIncrement().after(grammarAccess.getQNameDefRule());
		c.setIndentationIncrement().after(grammarAccess.getUriDefRule());
		c.setIndentationDecrement().after(grammarAccess.getTriplesAccess().getTRIPELENDTerminalRuleCall_2());
		c.setLinewrap(1).before(grammarAccess.getTriplesAccess().getPredObjsAssignment_1_1_1());

		//no space before , and ;
		c.setNoSpace().before(grammarAccess.getTriplesAccess().getSemicolonKeyword_1_1_0_0());
		c.setNoSpace().before(grammarAccess.getTriplesAccess().getSemicolonKeyword_1_2());
		c.setNoSpace().before(grammarAccess.getBlankObjectsAccess().getSemicolonKeyword_2_1_0());
		c.setNoSpace().before(grammarAccess.getBlankObjectsAccess().getSemicolonKeyword_2_2());
		c.setNoSpace().before(grammarAccess.getPredicateObjectListAccess().getCommaKeyword_2_0());

		//WS in QName
		c.setNoSpace().between(grammarAccess.getQNameRefAccess().getPrefixAssignment_1(), grammarAccess.getQNameRefAccess().getRefAssignment_2());
		c.setNoSpace().between(grammarAccess.getQNameDefAccess().getPrefixAssignment_1(), grammarAccess.getQNameDefAccess().getIdAssignment_2());

		//WS in String literals
		c.setNoSpace().around(grammarAccess.getStringLiteralAccess().getCircumflexAccentCircumflexAccentKeyword_1_0_0());
		c.setNoSpace().before(grammarAccess.getStringLiteralAccess().getLanguageAssignment_1_1());

		//blank objects
		c.setNoSpace().between(grammarAccess.getBlankObjectsAccess().getLeftSquareBracketKeyword_0(), grammarAccess.getBlankObjectsAccess().getRightSquareBracketKeyword_3());
		c.setIndentationIncrement().after(grammarAccess.getBlankObjectsAccess().getLeftSquareBracketKeyword_0());
		c.setIndentationDecrement().before(grammarAccess.getBlankObjectsAccess().getRightSquareBracketKeyword_3());
		c.setLinewrap(0,0,1).after(grammarAccess.getBlankObjectsAccess().getLeftSquareBracketKeyword_0());
		c.setLinewrap(0,0,1).before(grammarAccess.getBlankObjectsAccess().getRightSquareBracketKeyword_3());
		c.setLinewrap(0,1,1).after(grammarAccess.getBlankObjectsAccess().getSemicolonKeyword_2_1_0());
		c.setLinewrap(0,1,1).after(grammarAccess.getBlankObjectsAccess().getSemicolonKeyword_2_2());

		//blank objects
		c.setNoSpace().between(grammarAccess.getBlankCollectionAccess().getLeftParenthesisKeyword_0(), grammarAccess.getBlankCollectionAccess().getRightParenthesisKeyword_3());
		c.setIndentationIncrement().after(grammarAccess.getBlankCollectionAccess().getLeftParenthesisKeyword_0());
		c.setIndentationDecrement().before(grammarAccess.getBlankCollectionAccess().getRightParenthesisKeyword_3());
		c.setLinewrap(0,0,1).before(grammarAccess.getBlankCollectionAccess().getObjectsAssignment_2_0());
		c.setLinewrap(0,0,1).before(grammarAccess.getBlankCollectionAccess().getObjectsAssignment_2_1());
		c.setLinewrap(0,0,1).before(grammarAccess.getBlankCollectionAccess().getRightParenthesisKeyword_3());

	}
}