Trait NodeTypes 

pub trait NodeTypes {
    // Required methods
    fn root(&self) -> Option<NodeTypeId>;
    fn is_extra(&self, node_type_id: NodeTypeId) -> bool;
    fn has_field(
        &self,
        node_type_id: NodeTypeId,
        node_field_id: NodeFieldId,
    ) -> bool;
    fn field_cardinality(
        &self,
        node_type_id: NodeTypeId,
        node_field_id: NodeFieldId,
    ) -> Option<Cardinality>;
    fn valid_field_types(
        &self,
        node_type_id: NodeTypeId,
        node_field_id: NodeFieldId,
    ) -> &[NodeTypeId] ;
    fn is_valid_field_type(
        &self,
        node_type_id: NodeTypeId,
        node_field_id: NodeFieldId,
        child: NodeTypeId,
    ) -> bool;
    fn children_cardinality(
        &self,
        node_type_id: NodeTypeId,
    ) -> Option<Cardinality>;
    fn valid_child_types(&self, node_type_id: NodeTypeId) -> &[NodeTypeId] ;
    fn is_valid_child_type(
        &self,
        node_type_id: NodeTypeId,
        child: NodeTypeId,
    ) -> bool;
}

Trait for node type constraint lookups.

Provides only what tree-sitter’s Language API doesn’t:

• Root node identification
• Extra nodes (comments, whitespace)
• Field constraints per node type
• Children constraints per node type

For name↔ID resolution and supertype info, use Language directly.

Required Methods

fn root(&self) -> Option<NodeTypeId>

fn is_extra(&self, node_type_id: NodeTypeId) -> bool

fn has_field( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, ) -> bool

fn field_cardinality( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, ) -> Option<Cardinality>

fn valid_field_types( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, ) -> &[NodeTypeId]

fn is_valid_field_type( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, child: NodeTypeId, ) -> bool

fn children_cardinality(&self, node_type_id: NodeTypeId) -> Option<Cardinality>

fn valid_child_types(&self, node_type_id: NodeTypeId) -> &[NodeTypeId]

fn is_valid_child_type( &self, node_type_id: NodeTypeId, child: NodeTypeId, ) -> bool

Implementations on Foreign Types

impl<T: NodeTypes + ?Sized> NodeTypes for &T

fn root(&self) -> Option<NodeTypeId>

fn is_extra(&self, node_type_id: NodeTypeId) -> bool

fn has_field( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, ) -> bool

fn field_cardinality( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, ) -> Option<Cardinality>

fn valid_field_types( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, ) -> &[NodeTypeId]

fn is_valid_field_type( &self, node_type_id: NodeTypeId, node_field_id: NodeFieldId, child: NodeTypeId, ) -> bool

fn children_cardinality(&self, node_type_id: NodeTypeId) -> Option<Cardinality>

fn valid_child_types(&self, node_type_id: NodeTypeId) -> &[NodeTypeId]

fn is_valid_child_type( &self, node_type_id: NodeTypeId, child: NodeTypeId, ) -> bool

Implementors

impl NodeTypes for DynamicNodeTypes

impl NodeTypes for StaticNodeTypes