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/********************* */
/*! \file CVC4Streams.java
** \verbatim
** Top contributors (to current version):
** Morgan Deters, Andres Noetzli
** This file is part of the CVC4 project.
** Copyright (c) 2009-2020 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief Example of driving CVC4 parsing from Java streams
**
** This example shows how CVC4 can be driven from Java streams.
**/
import java.io.*;
import edu.stanford.CVC4.*;
public class CVC4Streams {
public static void main(String[] args) throws IOException {
System.loadLibrary("cvc4jni");
ExprManager exprMgr = new ExprManager();
SmtEngine smt = new SmtEngine(exprMgr);
smt.setOption("output-language", new SExpr("smt2"));
PipedOutputStream solverPipe = new PipedOutputStream();
PrintWriter toSolver = new PrintWriter(solverPipe);
PipedInputStream stream = new PipedInputStream(solverPipe);
toSolver.println("(set-logic QF_LIA)");
toSolver.println("(declare-fun x () Int)");
toSolver.println("(assert (= x 5))");
toSolver.println("(check-sat)");
toSolver.flush();
ParserBuilder pbuilder =
new ParserBuilder(exprMgr, "<string 1>")
.withInputLanguage(InputLanguage.INPUT_LANG_SMTLIB_V2)
.withLineBufferedStreamInput((java.io.InputStream)stream);
Parser parser = pbuilder.build();
Command cmd;
while((cmd = parser.nextCommand()) != null) {
System.out.println(cmd);
cmd.invoke(smt, System.out);
}
toSolver.println("(assert (= x 10))");
toSolver.println("(check-sat)");
toSolver.flush();
while((cmd = parser.nextCommand()) != null) {
System.out.println(cmd);
cmd.invoke(smt, System.out);
}
}
}
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