Examples with UnaryExpr jkind.lustre.UnaryExpr used on opensource projects

Example 36 with UnaryExpr

use of jkind.lustre.UnaryExpr in project AGREE by loonwerks.

the class AgreeCalendarUtils method getDFANode.

public static Node getDFANode(String name, int synchrony) {
    if (synchrony <= 0) {
        throw new AgreeException("Attempt to use quasi-synchrony of value: " + synchrony);
    }
    // VarDecl rVar = new VarDecl("_r",
    // new SubrangeIntType(BigInteger.valueOf(-synchrony),
    // BigInteger.valueOf(synchrony)));
    VarDecl rVar = new VarDecl("_r", NamedType.INT);
    IdExpr r = new IdExpr(rVar.id);
    VarDecl rIsBoundedVar = new VarDecl("_r_is_bounded", NamedType.BOOL);
    IdExpr rIsBounded = new IdExpr(rIsBoundedVar.id);
    VarDecl outVar = new VarDecl("_out", NamedType.BOOL);
    IdExpr out = new IdExpr(outVar.id);
    VarDecl clkVar0 = new VarDecl("_clk0", NamedType.BOOL);
    IdExpr p = new IdExpr(clkVar0.id);
    VarDecl clkVar1 = new VarDecl("_clk1", NamedType.BOOL);
    IdExpr q = new IdExpr(clkVar1.id);
    List<VarDecl> inputs = new ArrayList<>();
    inputs.add(clkVar0);
    inputs.add(clkVar1);
    List<VarDecl> outputs = new ArrayList<>();
    outputs.add(outVar);
    List<VarDecl> locals = new ArrayList<>();
    locals.add(rVar);
    locals.add(rIsBoundedVar);
    Expr intZeroExpr = new IntExpr(BigInteger.ZERO);
    Expr intOneExpr = new IntExpr(BigInteger.ONE);
    Expr intNegOneExpr = new IntExpr(BigInteger.valueOf(-1));
    Expr intSyncValExpr = new IntExpr(BigInteger.valueOf(synchrony));
    Expr intNegSyncValxpr = new IntExpr(BigInteger.valueOf(-synchrony));
    // (0 -> pre r)
    Expr rPreExpr = new BinaryExpr(new IntExpr(BigInteger.ZERO), BinaryOp.ARROW, new UnaryExpr(UnaryOp.PRE, r));
    // (0 -> pre r) < 0
    Expr rPreLTExpr = new BinaryExpr(rPreExpr, BinaryOp.LESS, intZeroExpr);
    // (0 -> pre r) > 0
    Expr rPreGTExpr = new BinaryExpr(rPreExpr, BinaryOp.GREATER, intZeroExpr);
    // (0 -> pre r) + 1
    Expr rPrePlus = new BinaryExpr(rPreExpr, BinaryOp.PLUS, intOneExpr);
    // (0 -> pre r) - 1
    Expr rPreMinus = new BinaryExpr(rPreExpr, BinaryOp.MINUS, intOneExpr);
    // if (0 -> pre r) < 0 then 1 else ((0 -> pre r) + 1)
    Expr ifExpr0 = new IfThenElseExpr(rPreLTExpr, intOneExpr, rPrePlus);
    // if (0 -> pre r) > 0 then -1 else ((0 -> pre r) - 1)
    Expr ifExpr1 = new IfThenElseExpr(rPreGTExpr, intNegOneExpr, rPreMinus);
    // if q then (if (0 -> pre r) > 0 then -1 else ((0 -> pre r) - 1)) else
    // (0 -> pre r)
    Expr ifExprClk1 = new IfThenElseExpr(q, ifExpr1, rPreExpr);
    // if p then (if (0 -> pre r) < 0 then 1 else ((0 -> pre r) + 1))
    // else if q then (if (0 -> pre r) > 0 then -1 else ((0 -> pre r) - 1))
    // else (0 -> pre r);
    Expr ifExprClk0 = new IfThenElseExpr(p, ifExpr0, ifExprClk1);
    // if p and q then 0
    // else if p then (if (0 -> pre r) < 0 then 1 else ((0 -> pre r) + 1))
    // else if q then (if (0 -> pre r) > 0 then -1 else ((0 -> pre r) - 1))
    // else (0 -> pre r);
    Expr rExpr = new IfThenElseExpr(new BinaryExpr(p, BinaryOp.AND, q), intZeroExpr, ifExprClk0);
    // ((0 -> pre r) >= 2 and p)
    Expr condExpr0 = new BinaryExpr(new BinaryExpr(rPreExpr, BinaryOp.GREATEREQUAL, intSyncValExpr), BinaryOp.AND, p);
    // ((0 -> pre r) <= -2 and q)
    Expr condExpr1 = new BinaryExpr(new BinaryExpr(rPreExpr, BinaryOp.LESSEQUAL, intNegSyncValxpr), BinaryOp.AND, q);
    // not (((0 -> pre r) >= 2 and p) or ((0 -> pre r) <= -2 and q))
    Expr outExpr = new UnaryExpr(UnaryOp.NOT, new BinaryExpr(condExpr0, BinaryOp.OR, condExpr1));
    // r <= 2 and r >= -2
    Expr rIsBoundedExpr = new BinaryExpr(new BinaryExpr(r, BinaryOp.LESSEQUAL, intSyncValExpr), BinaryOp.AND, new BinaryExpr(r, BinaryOp.GREATEREQUAL, intNegSyncValxpr));
    List<Equation> equations = new ArrayList<>();
    equations.add(new Equation(r, rExpr));
    equations.add(new Equation(rIsBounded, rIsBoundedExpr));
    equations.add(new Equation(out, outExpr));
    // TODO we used to have the subnode property in here, but it messes up kind2
    List<String> properties = new ArrayList<>();
    // properties.add(rIsBounded.id);
    NodeBuilder builder = new NodeBuilder(name);
    builder.addInputs(inputs);
    builder.addOutputs(outputs);
    builder.addLocals(locals);
    builder.addEquations(equations);
    builder.addProperties(properties);
    return builder.build();
}