static ContextFactory()
{
Default = CreateDefault();
Default.ReadOnly = true;
Empty = CreateEmpty();
Empty.ReadOnly = true;
}
public static SharpAlg.Native.Parser.Parser AssertValue(this SharpAlg.Native.Parser.Parser parser, double? value, Expr expectedExpr = null, Context context = null)
{
return parser
.IsEqual(x => x.errors.Errors, string.Empty)
.IsEqual(x => x.errors.Count, 0)
.IsEqual(x => value != null ? x.Expr.Evaluate(context) : null, value != null ? ExprTestHelper.AsNumber(value.Value) : null)
.IsTrue(x => expectedExpr == null || x.Expr.ExprEquals(expectedExpr));
}
public static string Print(this Expr expr, Context context = null)
{
return expr.Visit(ExpressionPrinter.Create(context ?? ContextFactory.Default));
}