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Grammar

meta_language::grammar

Struct Grammar 

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pub struct Grammar { /* private fields */ }
Expand description

Order-preserving grammar.

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impl Grammar

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pub fn validate(&self) -> Vec<GrammarDiagnostic>

Runs semantic grammar validation.

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impl Grammar

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pub const fn new() -> Self

Builds an empty grammar.

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pub const fn builder() -> GrammarBuilder

Builds a fluent grammar builder.

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pub const fn expr() -> ExprBuilder

Builds an expression builder.

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pub fn with_rule(self, rule: GrammarRule) -> Self

Returns this grammar with an additional rule.

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pub fn with_start(self, start: impl Into<String>) -> Self

Returns this grammar with a start rule name.

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pub const fn with_source_format(self, source_format: GrammarFormat) -> Self

Returns this grammar with a source format.

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pub fn add_rule(&mut self, rule: GrammarRule)

Adds a rule to the grammar.

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pub fn set_start(&mut self, start: impl Into<String>)

Sets the grammar start rule name.

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pub fn clear_start(&mut self)

Clears the explicit grammar start rule.

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pub const fn set_source_format(&mut self, source_format: GrammarFormat)

Sets the grammar source format.

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pub fn rules(&self) -> &[GrammarRule]

Returns all rules in source order.

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pub fn rule(&self, name: &str) -> Option<&GrammarRule>

Returns the rule with name, when present.

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pub fn start(&self) -> Option<&str>

Returns the explicitly configured start symbol, if present.

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pub fn start_rule(&self) -> Option<&GrammarRule>

Returns the start rule, defaulting to the first rule when unset.

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pub const fn source_format(&self) -> Option<GrammarFormat>

Returns the source format, if known.

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

Returns rule names in source order.

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pub fn referenced_nonterminals(&self) -> BTreeSet<String>

Returns non-terminal names referenced from every rule expression.

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pub fn undefined_nonterminals(&self) -> BTreeSet<String>

Returns referenced non-terminals that do not have a local rule.

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impl Clone for Grammar

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fn clone(&self) -> Grammar

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Grammar

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

Formats the value using the given formatter. Read more
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impl Default for Grammar

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fn default() -> Grammar

Returns the “default value” for a type. Read more
Reconstructs this value from a root link id.
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impl PartialEq for Grammar

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
Inserts links for this value and returns the root link id.
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impl Eq for Grammar

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impl StructuralPartialEq for Grammar

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> LayoutRaw for T

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Returns the layout of the type.
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impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
where T: SharedNiching<N1, N2>, N1: Niching<T>, N2: Niching<T>,

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unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool

Returns whether the given value has been niched. Read more
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fn resolve_niched(out: Place<NichedOption<T, N1>>)

Writes data to out indicating that a T is niched.
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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type Metadata = ()

The metadata type for pointers and references to this type.
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where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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fn vzip(self) -> V

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