/// <summary>
/// Convert an 'Eq' expression.
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="parameter">The parameter.</param>
/// <returns>The compilable expression.</returns>
public Expression VisitZenEqExpr <T>(ZenEqExpr <T> expression, ExpressionConverterEnvironment parameter)
{
return(LookupOrCompute(expression, () =>
{
return Expression.Equal(
expression.Expr1.Accept(this, parameter),
expression.Expr2.Accept(this, parameter));
}));
}
public ImmutableHashSet <object> VisitZenEqExpr <T>(ZenEqExpr <T> expression, Unit parameter)
{
return(LookupOrCompute(expression, () =>
{
var x = expression.Expr1.Accept(this, parameter);
var y = expression.Expr2.Accept(this, parameter);
this.Combine(x, y);
return x.Union(y);
}));
}
/// <summary>
/// Visit an EqExpr.
/// </summary>
/// <param name="expression">The expression.</param>
/// <param name="parameter">The parameter.</param>
/// <returns>The resulting symbolic value.</returns>
public SymbolicValue <TModel, TVar, TBool, TInt> VisitZenEqExpr <T1>(ZenEqExpr <T1> expression, SymbolicEvaluationEnvironment <TModel, TVar, TBool, TInt> parameter)
{
return(LookupOrCompute(expression, () =>
{
var v1 = expression.Expr1.Accept(this, parameter);
var v2 = expression.Expr2.Accept(this, parameter);
if (v1 is SymbolicBool <TModel, TVar, TBool, TInt> b1 && v2 is SymbolicBool <TModel, TVar, TBool, TInt> b2)
{
return new SymbolicBool <TModel, TVar, TBool, TInt>(this.Solver, this.Solver.Iff(b1.Value, b2.Value));
}
var i1 = (SymbolicInteger <TModel, TVar, TBool, TInt>)v1;
var i2 = (SymbolicInteger <TModel, TVar, TBool, TInt>)v2;
return new SymbolicBool <TModel, TVar, TBool, TInt>(this.Solver, this.Solver.Eq(i1.Value, i2.Value));
}));