IsValidVxIdent
Function IsValidVxIdent(const Ident: string; aAllowSpace: boolean): Boolean
Example
procedure ScriptEvent(var Value: variant);
begin
Value := IsValidVxIdent('Customer_2', False); // True
end;
Usage
IsValidVxIdent tests a narrow ASCII identifier grammar with an optional allowance for ordinary spaces after the required leading letter.
Parameters and result
| Item | Type | Description |
|---|---|---|
Ident | string | Candidate to validate exactly as supplied. |
aAllowSpace | Boolean | When true, ASCII space (#32) is accepted after the first character. It does not permit tabs or other whitespace. |
| Result | Boolean | True only when every source-defined condition passes. |
Additional Technical Info
IsValidVxIdent checks whether Ident follows Velox's source-defined ASCII identifier character rules. A valid value must begin with an ASCII letter. Remaining characters may be ASCII letters, digits or underscore; ordinary spaces are also allowed when aAllowSpace is True.
The example is fictional and source-reviewed only.
Grammar
First character: A-Z or a-z
Later characters when False: A-Z, a-z, 0-9, _
Later characters when True: A-Z, a-z, 0-9, _, space
Empty input, a leading digit, a leading underscore or a leading space is invalid. With spaces allowed, repeated, internal or trailing spaces all pass because the implementation applies no placement rule beyond the first character. Non-ASCII letters, hyphens, dots and punctuation fail.
This routine validates character shape only. It does not check PascalScript reserved words, Velox naming conventions, name uniqueness, maximum length, collisions, case-equivalent names or whether a target configuration location actually accepts spaces. Apply those contextual rules separately.
IdentifierEncode maps invalid characters but has a current first-character suffix defect; never assume its result passes this validation without calling IsValidVxIdent.