Enum Condition 

pub enum Condition {
    Check(String),
    Not(Box<Condition>),
    And(Box<Condition>, Box<Condition>),
    Or(Box<Condition>, Box<Condition>),
}

A parsed when expression.

Names are kept as written so an “undefined check” error can quote the operator’s own spelling.

Variants

Check(String)

A [filter.check.<name>] entry, by name.

Not(Box<Condition>)

And(Box<Condition>, Box<Condition>)

Or(Box<Condition>, Box<Condition>)

Implementations

impl Condition

pub fn parse(source: &str) -> Result<Self, ExprError>

Parses a when expression.

Errors

Returns the position of the first token that could not be read, or of the ( that was never closed.

pub fn check_names(&self) -> Vec<&str>

Every check name the condition mentions, in evaluation order, with duplicates kept — the builder deduplicates when it resolves them.

Trait Implementations

impl Clone for Condition

fn clone(&self) -> Condition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Condition

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

Formats the value using the given formatter.

impl Display for Condition

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

Re-prints the expression with every grouping made explicit.

This is what acme-proxy filter show prints, and the point is that it shows what the parser understood rather than what was typed: an operator who expected a or b and c to mean (a or b) and c sees a or (b and c) and has their answer.

impl Eq for Condition

impl PartialEq for Condition

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Condition