Enum litcheck_lit::config::BooleanExpr

pub enum BooleanExpr {
    Lit(bool),
    Var(String),
    Pattern(Regex),
    Not(Box<BooleanExpr>),
    And(Box<BooleanExpr>, Box<BooleanExpr>),
    Or(Box<BooleanExpr>, Box<BooleanExpr>),
}

This corresponds to the boolean expressions allowed in lit’s DEFINE and REDEFINE commands

Variants

Lit(bool)

A literal boolean value

Var(String)

A variable name.

If the variable exists, this evaluates the value of that variable, otherwise false.

Pattern(Regex)

A pattern which, if it matches any variable which is true, evaluates to true, otherwise false.

Not(Box<BooleanExpr>)

The logical NOT operator

And(Box<BooleanExpr>, Box<BooleanExpr>)

The logical AND operator

Or(Box<BooleanExpr>, Box<BooleanExpr>)

The logical OR operator

Implementations

impl BooleanExpr

pub fn evaluate<E: Environment>(&self, env: &E) -> bool

Evaluate this boolean expression with variables as the context.

If a variable is present in variables, it is considered to have an implicit value of true. As a result, if an identifier or pattern matches a variable in the set, that expression evaluates to true.

Trait Implementations

impl AsRef<BooleanExpr> for BooleanExpr

fn as_ref(&self) -> &BooleanExpr

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for BooleanExpr

fn clone(&self) -> BooleanExpr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BooleanExpr

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

Formats the value using the given formatter.

impl Default for BooleanExpr

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for BooleanExpr

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for BooleanExpr

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

Formats the value using the given formatter.

impl FromStr for BooleanExpr

type Err = InvalidBooleanExprError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl PartialEq for BooleanExpr

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for BooleanExpr