Struct Scheme

pub struct Scheme { /* private fields */ }

The main registry for fields and their associated types.

This is necessary to provide typechecking for runtime values provided to the execution context and also to aid parser in ambiguous contexts.

Implementations

impl<'s> Scheme

pub fn new() -> Self

Creates a new scheme.

pub fn with_capacity(n: usize) -> Self

Creates a new scheme with capacity for n fields.

pub fn add_field( &mut self, name: String, ty: Type, ) -> Result<(), FieldRedefinitionError>

Registers a field and its corresponding type.

pub fn try_from_iter( iter: impl IntoIterator<Item = (String, Type)>, ) -> Result<Self, FieldRedefinitionError>

Registers a series of fields from an iterable, reporting any conflicts.

pub fn parse<'i>( &'s self, input: &'i str, ) -> Result<FilterAst<'s>, ParseError<'i>>

Parses a filter into an AST form.

Trait Implementations

impl Default for Scheme

fn default() -> Scheme

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Scheme

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Scheme

fn eq(&self, other: &Self) -> 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 Eq for Scheme