public override object VisitExpr(ExpressionParser.ExprContext context)
{
if ((context.DEBUG() != null) && (Debugger.IsAttached))
{
Debugger.Break();
}
var result = Visit(context.form());
if (unit != null)
{
if (unit != "")
{
if (!(result is NumericValue))
{
throw new Exception("Cannot change units on non-numeric result");
}
if ((result as NumericValue).Units.HasUnits)
{
result = (result as NumericValue).ConvertUnits(new ExpressionUnits(unit)).StripUnits();
}
}
else if (result is NumericValue)
{
result = (result as NumericValue).StripUnits();
}
}
return(Simplify(result));
}
public NEExpression(string expression)
{
this.expression = expression;
try { tree = ParserHelper.Parse <ExpressionLexer, ExpressionParser, ExpressionParser.ExprContext>(expression, parser => parser.expr(), true); }
catch (Exception ex) { throw new Exception("Invalid expression", ex); }
}
public override IExpression <T> VisitExpr(ExpressionParser.ExprContext context)
{
return(Visit(context.GetChild(0)));
}
/// <summary>
/// Visit a parse tree produced by <see cref="ExpressionParser.expr"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitExpr([NotNull] ExpressionParser.ExprContext context)
{
return(VisitChildren(context));
}
