plugins/org.eclipse.dltk.ruby.ui/src/org/eclipse/dltk/ruby/internal/ui/text/RubyPartitionScanner.java

/*******************************************************************************
 * Copyright (c) 2005, 2017 IBM Corporation and others.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 * 
 * SPDX-License-Identifier: EPL-2.0
 *
 *******************************************************************************/
package org.eclipse.dltk.ruby.internal.ui.text;

import java.util.ArrayList;
import java.util.List;

import org.eclipse.dltk.ruby.internal.ui.text.rules.RubyDoubleQuoteStringRule;
import org.eclipse.dltk.ruby.internal.ui.text.rules.RubyGlobalVarRule;
import org.eclipse.dltk.ruby.internal.ui.text.rules.RubyPercentStringRule;
import org.eclipse.dltk.ruby.internal.ui.text.rules.RubySlashRegexpRule;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.rules.EndOfLineRule;
import org.eclipse.jface.text.rules.IPredicateRule;
import org.eclipse.jface.text.rules.MultiLineRule;
import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
import org.eclipse.jface.text.rules.Token;

public class RubyPartitionScanner extends RuleBasedPartitionScanner {

	private Token string;
	private Token comment;
	private Token rubyDoc;
	private Token defaultToken;
	private Token singleQuoteString;
	private Token percentString;

	/**
	 * Creates the partitioner and sets up the appropriate rules.
	 */
	public RubyPartitionScanner() {
		super();

		defaultToken = new Token(IDocument.DEFAULT_CONTENT_TYPE);

		string = new Token(IRubyPartitions.RUBY_STRING);

		singleQuoteString = new Token(IRubyPartitions.RUBY_SINGLE_QUOTE_STRING);

		percentString = new Token(IRubyPartitions.RUBY_PERCENT_STRING);

		comment = new Token(IRubyPartitions.RUBY_COMMENT);

		rubyDoc = new Token(IRubyPartitions.RUBY_DOC);

		List<IPredicateRule> rules = new ArrayList<>();

		rules.add(new RDocRule(rubyDoc));

		rules.add(new EndOfLineRule("#", comment)); //$NON-NLS-1$

		rules.add(new RubyDoubleQuoteStringRule(string));

		rules.add(new MultiLineRule("'", "'", singleQuoteString, '\\', false)); //$NON-NLS-1$ //$NON-NLS-2$

		rules.add(new RubyPercentStringRule(percentString, false));

		rules.add(new RubySlashRegexpRule(string));

		rules.add(new RubyGlobalVarRule(defaultToken));

		IPredicateRule[] result = new IPredicateRule[rules.size()];
		rules.toArray(result);
		setPredicateRules(result);
	}
}