internal static ParseErrorExpression ParseError(PositionalTokenizer tokenizer, string message, ExpressionBase expression)
{
var error = ParseError(tokenizer, message);
error.InnerError = expression as ParseErrorExpression;
expression.CopyLocation(error);
return(error);
}
/// <summary>
/// Attempts to convert an expression to a <see cref="FloatConstantExpression"/>.
/// </summary>
/// <param name="expression">The expression to convert.</param>
/// <returns>The converted expression, or a <see cref="ParseErrorExpression"/> if the expression could not be converted.</returns>
public static ExpressionBase ConvertFrom(ExpressionBase expression)
{
FloatConstantExpression floatExpression;
switch (expression.Type)
{
case ExpressionType.FloatConstant:
return(expression);
case ExpressionType.IntegerConstant:
floatExpression = new FloatConstantExpression((float)((IntegerConstantExpression)expression).Value);
break;
default:
return(new ParseErrorExpression("Cannot convert to float", expression));
}
expression.CopyLocation(floatExpression);
return(floatExpression);
}
