Struct PartialSymbolStack 

#[non_exhaustive]
pub struct PartialSymbolStack<'a> {
    pub symbols: VecDeque<&'a str>,
    pub variable: Option<SymbolStackVariable>,
}

A symbol stack pattern: known symbols, top first, over an optional unknown rest.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

symbols: VecDeque<&'a str>

The known symbols, top first.

variable: Option<SymbolStackVariable>

The unknown rest below them; None when the stack ends there.

Implementations

impl<'a> PartialSymbolStack<'a>

pub fn new( symbols: VecDeque<&'a str>, variable: Option<SymbolStackVariable>, ) -> Self

symbols, top first, over variable.

pub fn from_variable(variable: SymbolStackVariable) -> Self

Only the unknown rest variable.

pub fn with_offset(&self, offset: u32) -> Option<Self>

This stack with its variable renumbered offset places up; None past the last number.

pub fn apply_bindings(&self, bindings: &PartialBindings<'a>) -> Self

This stack with its variable replaced by what bindings binds it to.

Trait Implementations

impl<'a> Clone for PartialSymbolStack<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for PartialSymbolStack<'a>

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

Formats the value using the given formatter.

impl<'a> Default for PartialSymbolStack<'a>

fn default() -> Self

Returns the “default value” for a type.

impl<'a> Eq for PartialSymbolStack<'a>

impl<'a> Ord for PartialSymbolStack<'a>

fn cmp(&self, other: &Self) -> 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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl<'a> PartialEq for PartialSymbolStack<'a>

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

Equality operator ==.

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

Inequality operator !=.

impl<'a> PartialOrd for PartialSymbolStack<'a>

fn partial_cmp(&self, other: &Self) -> 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<'a> StructuralPartialEq for PartialSymbolStack<'a>