Struct Effect 

pub struct Effect {
    pub inputs: StackType,
    pub outputs: StackType,
    pub effects: Vec<SideEffect>,
}

Stack effect: transformation from input stack to output stack Example: ( ..a Int – ..a Bool ) means:

• Consumes an Int from stack with ..a underneath
• Produces a Bool on stack with ..a underneath

With computational effects: ( ..a Int – ..a Bool | Yield Int )

• Same stack transformation
• May also yield Int values (generator effect)

Fields

inputs: StackType

Input stack type (before word executes)

outputs: StackType

Output stack type (after word executes)

effects: Vec<SideEffect>

Computational side effects (Yield, etc.)

Implementations

impl Effect

pub fn new(inputs: StackType, outputs: StackType) -> Self

Create a new stack effect (pure, no side effects)

pub fn with_effects( inputs: StackType, outputs: StackType, effects: Vec<SideEffect>, ) -> Self

Create a new stack effect with computational effects

pub fn is_pure(&self) -> bool

Check if this effect is pure (no side effects)

pub fn has_yield(&self) -> bool

Check if this effect has a Yield effect

pub fn yield_type(&self) -> Option<&Type>

Get the yield type if this effect has one

Trait Implementations

impl Clone for Effect

fn clone(&self) -> Effect

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Effect

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

Formats the value using the given formatter.

impl Display for Effect

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

Formats the value using the given formatter.

impl Hash for Effect

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Effect

fn eq(&self, other: &Effect) -> 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 Eq for Effect

impl StructuralPartialEq for Effect