Function parse_offset_statement

crates/gitql-parser/src/parser.rs:1226–1249

(
    context: &mut ParserContext,
    env: &mut Environment,
    tokens: &[Token],
    position: &mut usize,
)

}

fn parse_offset_statement(
    context: &mut ParserContext,
    env: &mut Environment,
    tokens: &[Token],
    position: &mut usize,
) -> Result<Statement, Box<Diagnostic>> {
    // Consume `OFFSET` keyword
    *position += 1;

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

    let start = parse_expression(context, env, tokens, position)?;
    if start.expr_type().is_int() {
        return Ok(Statement::Offset(OffsetStatement { start }));
    }

    Err(Diagnostic::error("Expect int after `OFFSET` keyword")
        .with_location(calculate_safe_location(tokens, *position - 1))
        .as_boxed())
}

fn parse_window_named_over_clause(
    context: &mut ParserContext,