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/**
 * Copyright (C) 2010-2018 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see .
 */
package org.evosuite.symbolic.expr.token;

import java.util.HashSet;
import java.util.Set;

import org.evosuite.Properties;
import org.evosuite.symbolic.ConstraintTooLongException;
import org.evosuite.symbolic.expr.ExpressionVisitor;
import org.evosuite.symbolic.expr.Variable;
import org.evosuite.symbolic.expr.str.StringValue;

public final class NewTokenizerExpr extends TokenizerExpr {

	/**
	 * 
	 */
	private static final long serialVersionUID = -6640965868758291282L;
	private final StringValue string;
	private final StringValue delim;

	public NewTokenizerExpr(StringValue string, StringValue delim) {
		super(1 + string.getSize() + delim.getSize(), string.containsSymbolicVariable()
		        || delim.containsSymbolicVariable());

		this.string = string;
		this.delim = delim;

		if (getSize() > Properties.DSE_CONSTRAINT_LENGTH)
			throw new ConstraintTooLongException(getSize());
	}

	@Override
	public Set> getVariables() {
		Set> variables = new HashSet>();
		variables.addAll(this.string.getVariables());
		variables.addAll(this.delim.getVariables());
		return variables;
	}

	@Override
	public boolean equals(Object obj) {
		if (obj == null)
			return false;

		if (this == obj)
			return true;

		if (obj instanceof NewTokenizerExpr) {
			NewTokenizerExpr that = (NewTokenizerExpr) obj;
			return this.string.equals(that.string) && this.delim.equals(that.delim);
		}
		return false;
	}

	@Override
	public int hashCode() {
		return string.hashCode() + delim.hashCode();
	}

	@Override
	public String toString() {
		String toString = String.format("TOKENIZE(%s, %s)", string.toString(),
		                                delim.toString());
		return toString;
	}

	@Override
	public StringValue getDelimiter() {
		return delim;
	}

	@Override
	public StringValue getString() {
		return string;
	}

	@Override
	public int getNextTokenCount() {
		return 0;
	}

	@Override
	public Set