/// <summary>
/// Verify that if the function satisfies the precondition,
/// then it also satisfies the postcondition.
/// </summary>
/// <param name="invariant">The invariant.</param>
/// <param name="backend">The backend.</param>
/// <returns>An input if one exists satisfying the constraints.</returns>
public bool Assert(Func <Zen <T>, Zen <bool> > invariant, Backend backend = Backend.Z3)
{
var result = invariant(this.function());
return(CommonUtilities.RunWithLargeStack(() => SymbolicEvaluator.Find(result, backend)));
}
/// <summary>
/// Initializes a new instance of the <see cref="ZenConstantStringExpr"/> class.
/// </summary>
/// <param name="unescapedValue">The unescaped value.</param>
private ZenConstantStringExpr(string unescapedValue)
{
this.UnescapedValue = unescapedValue;
this.EscapedValue = CommonUtilities.ConvertCSharpStringToZ3(unescapedValue);
}
/// <summary>
/// Create a new instance of the <see cref="ZenFunction{T}"/> class.
/// </summary>
/// <param name="function">The function.</param>
public ZenFunction(Func <Zen <T> > function)
{
CommonUtilities.ValidateNotNull(function);
this.function = function;
}
/// <summary>
/// Simplify an expression recursively.
/// </summary>
/// <returns></returns>
public Zen <T> Simplify()
{
return(CommonUtilities.RunWithLargeStack(() => this.Unroll()));
}
