Function expect_identifier

graphlite/src/ast/parser.rs:3500–3519

Helper function to expect a specific identifier (case-insensitive)

(name: &str)

/// Helper function to expect a specific identifier (case-insensitive)
fn expect_identifier(name: &str) -> impl Fn(&[Token]) -> IResult<&[Token], Token> + '_ {
    move |tokens: &[Token]| {
        if let Some(token) = tokens.first() {
            match token {
                Token::Identifier(id) if id.eq_ignore_ascii_case(name) => {
                    Ok((&tokens[1..], token.clone()))
                }
                _ => Err(nom::Err::Error(nom::error::Error::new(
                    tokens,
                    nom::error::ErrorKind::Tag,
                ))),
            }
        } else {
            Err(nom::Err::Error(nom::error::Error::new(
                tokens,
                nom::error::ErrorKind::Tag,
            )))
        }
    }
}

/// Parse CREATE USER statement: CREATE USER username PASSWORD password [ROLES (role1, role2, ...)]
fn create_user_statement(tokens: &[Token]) -> IResult<&[Token], CreateUserStatement> {