Struct ruby_prism_sys::pm_scope

#[repr(C)]
pub struct pm_scope {
    pub locals: pm_constant_id_list_t,
    pub previous: *mut pm_scope,
    pub closed: bool,
    pub explicit_params: bool,
    pub forwarding_params: u8,
    pub numbered_parameters: u8,
}

This struct represents a node in a linked list of scopes. Some scopes can see into their parent scopes, while others cannot.

Fields

locals: pm_constant_id_list_t

The IDs of the locals in the given scope.

previous: *mut pm_scope

A pointer to the previous scope in the linked list.

closed: bool

A boolean indicating whether or not this scope can see into its parent. If closed is true, then the scope cannot see into its parent.

explicit_params: bool

A boolean indicating whether or not this scope has explicit parameters. This is necessary to determine whether or not numbered parameters are allowed.

forwarding_params: u8

Booleans indicating whether the parameters for this scope have declared forwarding parameters.

For example, some combinations of: def foo(*); end def foo(**); end def foo(&); end def foo(…); end

numbered_parameters: u8

An integer indicating the number of numbered parameters on this scope. This is necessary to determine if child blocks are allowed to use numbered parameters, and to pass information to consumers of the AST about how many numbered parameters exist.

Trait Implementations

impl Clone for pm_scope

fn clone(&self) -> pm_scope

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for pm_scope

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for pm_scope

fn default() -> Self

Returns the “default value” for a type.

impl Copy for pm_scope