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/********************* */
/*! \file PipedInput.java
** \verbatim
** Original author: Morgan Deters
** Major contributors: none
** Minor contributors (to current version): none
** This file is part of the CVC4 project.
** Copyright (c) 2009-2013 New York University and The University of Iowa
** See the file COPYING in the top-level source directory for licensing
** information.\endverbatim
**
** \brief A simple demonstration of the input parsing capabilities of CVC4
** when used from Java
**
** A simple demonstration of the input parsing capabilities of CVC4 when
** used from Java.
**/
import edu.nyu.acsys.CVC4.*;
import java.io.*;
public class PipedInput {
public static void main(String[] args) throws IOException {
System.loadLibrary("cvc4jni");
// Boilerplate setup for CVC4
ExprManager exprMgr = new ExprManager();
SmtEngine smt = new SmtEngine(exprMgr);
smt.setOption("output-language", new SExpr("smt2"));
// Set up a pair of connected Java streams
PipedOutputStream solverPipe = new PipedOutputStream();
PrintWriter toSolver = new PrintWriter(solverPipe);
PipedInputStream stream = new PipedInputStream(solverPipe);
// Write some things to CVC4's input stream, making sure to flush()
toSolver.println("(set-logic QF_LIA)");
toSolver.println("(declare-fun x () Int)");
toSolver.println("(assert (= x 5))");
toSolver.println("(check-sat)");
toSolver.flush();
// Set up the CVC4 parser
ParserBuilder pbuilder =
new ParserBuilder(exprMgr, "<string 1>")
.withInputLanguage(InputLanguage.INPUT_LANG_SMTLIB_V2)
.withLineBufferedStreamInput((java.io.InputStream)stream);
Parser parser = pbuilder.build();
// Read all the commands thus far
Command cmd;
while((cmd = parser.nextCommand()) != null) {
System.out.println(cmd);
cmd.invoke(smt, System.out);
}
// Write some more things to CVC4's input stream, making sure to flush()
toSolver.println("(assert (= x 10))");
toSolver.println("(check-sat)");
toSolver.flush();
// Read all the commands thus far
while((cmd = parser.nextCommand()) != null) {
System.out.println(cmd);
cmd.invoke(smt, System.out);
}
}
}
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