Function parse_global_variable_expression

crates/gitql-parser/src/parser.rs:3722–3735

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

}

fn parse_global_variable_expression(
    env: &mut Environment,
    tokens: &[Token],
    position: &mut usize,
) -> Result<Box<dyn Expr>, Box<Diagnostic>> {
    let name = tokens[*position].to_string();
    *position += 1;
    let result_type = if env.globals_types.contains_key(&name) {
        env.globals_types[name.as_str()].clone()
    } else {
        Box::new(UndefType)
    };
    Ok(Box::new(GlobalVariableExpr { name, result_type }))
}

fn un_expected_query_start_error(tokens: &[Token], position: &mut usize) -> Box<Diagnostic> {
    let token: &Token = &tokens[*position];