Struct FilterAst

pub struct FilterAst<'s> { /* private fields */ }

A parsed filter AST.

It’s attached to its corresponding Scheme because all parsed fields are represented as indices and are valid only when ExecutionContext is created from the same scheme.

Implementations

impl<'s> FilterAst<'s>

pub fn uses(&self, field_name: &str) -> Result<bool, UnknownFieldError>

Recursively checks whether a FilterAst uses a given field name.

This is useful to lazily initialise expensive fields only if necessary.

pub fn compile(self) -> Filter<'s>

Compiles a FilterAst into a Filter.

Trait Implementations

impl<'s> Clone for FilterAst<'s>

fn clone(&self) -> FilterAst<'s>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<'s> Debug for FilterAst<'s>

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

Formats the value using the given formatter.

impl<'s> PartialEq for FilterAst<'s>

fn eq(&self, other: &FilterAst<'s>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

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

impl<'s> Serialize for FilterAst<'s>

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'s> Eq for FilterAst<'s>

impl<'s> StructuralPartialEq for FilterAst<'s>