/// <summary>
/// Appends the current variable name, e.g. <c>@V0</c>, to the attribute buffer.
/// </summary>
/// <param name="attribute">The current attribute.</param>
/// <returns>A new attribute containing the appended buffer.</returns>
public static IProjectionAttribute Var(this IProjectionAttribute attribute)
{
IField field = ProjectionHelper.GetFieldValue(attribute);
string variableName = attribute.Context.Lookup.Variable(attribute.Identity, field);
string dialectName = attribute.Context.Domain.Dialect.Variable(variableName);
return(attribute.Append(dialectName));
}
/// <summary>
/// Appends the current value in safe literal form, e.g. <c>1</c>, to the attribute buffer. Parameters are used for unsafe literals.
/// </summary>
/// <param name="attribute">The current attribute.</param>
/// <returns>A new attribute containing the appended buffer.</returns>
public static IProjectionAttribute Lit(this IProjectionAttribute attribute)
{
IField field = ProjectionHelper.GetFieldValue(attribute);
string literal = attribute.Context.Domain.Dialect.Literal(field?.Value);
if (literal == null)
{
return(attribute.Par());
}
else
{
return(attribute.Append(literal));
}
}
