Struct pm_scope

#[repr(C)]
pub struct pm_scope {
    pub previous: *mut pm_scope,
    pub locals: pm_locals_t,
    pub implicit_parameters: pm_node_list_t,
    pub parameters: pm_scope_parameters_t,
    pub shareable_constant: pm_shareable_constant_value_t,
    pub closed: bool,
}

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

Fields

previous: *mut pm_scope

A pointer to the previous scope in the linked list.

locals: pm_locals_t

The IDs of the locals in the given scope.

implicit_parameters: pm_node_list_t

This is a list of the implicit parameters contained within the block. These will be processed after the block is parsed to determine the kind of parameters node that should be used and to check if any errors need to be added.

parameters: pm_scope_parameters_t

This is a bitfield that indicates the parameters that are being used in this scope. It is a combination of the PM_SCOPE_PARAMETERS_* constants. There are three different kinds of parameters that can be used in a scope:

• Ordinary parameters (e.g., def foo(bar); end)
• Numbered parameters (e.g., def foo; _1; end)
• The it parameter (e.g., def foo; it; end)

If ordinary parameters are being used, then certain parameters can be forwarded to another method/structure. Those are indicated by four additional bits in the params field. For example, some combinations of:

• def foo(*); end
• def foo(**); end
• def foo(&); end
• def foo(…); end

shareable_constant: pm_shareable_constant_value_t

The current state of constant shareability for this scope. This is changed by magic shareable_constant_value comments.

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.

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