Enum StringExpression 

pub enum StringExpression {
    Pattern(Box<StringPattern>),
    NotIn(Box<StringExpression>),
    Union(Box<StringExpression>, Box<StringExpression>),
    Intersection(Box<StringExpression>, Box<StringExpression>),
}

AST-level representation of the string matcher expression.

Variants

Pattern(Box<StringPattern>)

Matches pattern.

NotIn(Box<StringExpression>)

Matches anything other than the expression.

Union(Box<StringExpression>, Box<StringExpression>)

Matches one of the expressions.

Intersection(Box<StringExpression>, Box<StringExpression>)

Matches both expressions.

Implementations

impl StringExpression

pub fn none() -> StringExpression

Expression that matches nothing.

pub fn all() -> StringExpression

Expression that matches everything.

pub fn pattern(pattern: StringPattern) -> StringExpression

Expression that matches the given pattern.

pub fn exact(src: impl Into<String>) -> StringExpression

Expression that matches strings exactly.

pub fn substring(src: impl Into<String>) -> StringExpression

Expression that matches substrings.

pub fn negated(self) -> StringExpression

Expression that matches anything other than this expression.

pub fn union(self, other: StringExpression) -> StringExpression

Expression that matches self or other (or both).

pub fn union_all(expressions: Vec<StringExpression>) -> StringExpression

Expression that matches any of the given expressions.

pub fn intersection(self, other: StringExpression) -> StringExpression

Expression that matches both self and other.

pub fn exact_strings(&self) -> impl Iterator<Item = &str>

Iterates exact string patterns recursively from this expression.

For example, "a", "b", "c" will be yielded in that order for expression "a" | glob:"?" & "b" | ~"c".

pub fn to_matcher(&self) -> StringMatcher

Transforms the expression tree to matcher object.

Trait Implementations

impl Clone for StringExpression

fn clone(&self) -> StringExpression

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StringExpression

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

Formats the value using the given formatter.