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OSTRICH is an SMT solver for string constraints.
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/**
* This file is part of Ostrich, an SMT solver for strings.
* Copyright (c) 2023 Denghang Hu. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* * Neither the name of the authors nor the names of their
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package ostrich.cesolver.core
import ap.basetypes.IdealInt
import ap.parser.ITerm
object Model {
sealed trait Value
case class IntValue(i: IdealInt) extends Value
case class StringValue(str: Seq[Int]) extends Value
}
import Model._
trait Model {
val name : String
protected var model : Map[ITerm, Value] = Map.empty
def update(term: ITerm, value: Value): Unit = model += (term -> value)
def clear: Unit = model = Map.empty
def isEmpty = model.isEmpty
def getModel = model
}
class OstrichModel extends Model {
val name = "Ostrich Model"
def update(term: ITerm, value: IdealInt): Unit = super.update(term, IntValue(value))
def update(term: ITerm, value: Seq[Int]): Unit = super.update(term, StringValue(value))
}