Function parse_limit_statement

crates/gitql-parser/src/parser.rs:1190–1224

(
    tokens: &[Token],
    position: &mut usize,
)

}

fn parse_limit_statement(
    tokens: &[Token],
    position: &mut usize,
) -> Result<Statement, Box<Diagnostic>> {
    // Consume `LIMIT` keyword
    *position += 1;

    if *position >= tokens.len() {
        return Err(Diagnostic::error("Expect number after `LIMIT` keyword")
            .with_location(calculate_safe_location(tokens, *position - 1))
            .as_boxed());
    }

    match tokens[*position].kind {
        TokenKind::Integer(integer) => {
            // Consume Integer value
            *position += 1;

            // Make sure limit value is always positive
            if integer < 0 {
                return Err(
                    Diagnostic::error("Expect positive number after `LIMIT` keyword")
                        .with_location(calculate_safe_location(tokens, *position - 1))
                        .as_boxed(),
                );
            }

            let count = integer as usize;
            Ok(Statement::Limit(LimitStatement { count }))
        }
        _ => Err(Diagnostic::error("Expect number after `LIMIT` keyword")
            .with_location(calculate_safe_location(tokens, *position - 1))
            .as_boxed()),
    }
}

fn parse_offset_statement(
    context: &mut ParserContext,