Struct EffectKind 

pub struct EffectKind {
    pub name: String,
    pub arg: Option<EffectArg>,
}

Effect set with an optional row variable.

concrete is the closed lower bound — effect kinds the function definitely uses. var is an open extension point used for effect polymorphism on stdlib higher-order functions: list.map[T, U, E] declares its callback as (T) -> [E] U where E is var: Some(id). At call sites the variable unifies with whatever effect set the actual closure carries, then propagates to the result.

All call sites that compare or merge concrete-only sets continue to work via the helper methods, which delegate to concrete. A single effect entry. Bare [net] is the wildcard form (arg = None); parameterized [net("wttr.in")] carries an arg (#207). Sort order matches the String ordering of (name, arg) so BTreeSet<EffectKind> keeps a canonical iteration order.

Fields

name: String

arg: Option<EffectArg>

Implementations

impl EffectKind

pub fn bare(name: impl Into<String>) -> Self

Bare [name] — the wildcard form. Matches anything with the same name regardless of arg.

pub fn with_str(name: impl Into<String>, arg: impl Into<String>) -> Self

Parameterized [name("value")].

pub fn subsumes(&self, other: &EffectKind) -> bool

Returns true iff self is at least as permissive as other — i.e., a context declaring self can satisfy a callee requiring other. Bare absorbs specific ([mcp] accepts [mcp(ocpp)]); specifics match only themselves ([mcp(ocpp)] does not accept [mcp(other)]); names must match either way.

pub fn pretty(&self) -> String

Render for diagnostics. [name] for bare, [name("arg")] for string args, [name(arg)] for int/ident.

Trait Implementations

impl Clone for EffectKind

fn clone(&self) -> EffectKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EffectKind

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

Formats the value using the given formatter.

impl Ord for EffectKind

fn cmp(&self, other: &EffectKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for EffectKind

fn eq(&self, other: &EffectKind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for EffectKind

fn partial_cmp(&self, other: &EffectKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for EffectKind

impl StructuralPartialEq for EffectKind