Enum minitt::syntax::Pattern

pub enum Pattern {
    Pair(Box<Pattern>, Box<Pattern>),
    Unit,
    Var(String),
}

Patt in Mini-TT.

Variants

Pair(Box<Pattern>, Box<Pattern>)

Pair pattern. This sounds like trivial and useless, but we can achieve mutual recursion by using this pattern.

Unit

Unit pattern, used for introducing anonymous definitions.

Var(String)

Variable name pattern, the most typical pattern.

Methods

impl Pattern

pub fn contains(&self, name: &str) -> bool

inPat in Mini-TT.

pub fn project(&self, name: &str, val: Value) -> Result<Value, String>

patProj in Mini-TT.

Trait Implementations

impl Ord for Pattern

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

impl Eq for Pattern

impl PartialOrd<Pattern> for Pattern

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl PartialEq<Pattern> for Pattern

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl Clone for Pattern

fn clone(&self) -> Pattern

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Display for Pattern

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

Formats the value using the given formatter.

impl Debug for Pattern

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

Formats the value using the given formatter.