Enum PatternNode 

pub enum PatternNode {
    MetaVar {
        meta_var: MetaVariable,
    },
    Terminal {
        text: String,
        is_named: bool,
        kind_id: u16,
    },
    Internal {
        kind_id: u16,
        children: Vec<Self>,
    },
}

Internal representation of a pattern’s structure.

Patterns are compiled into a tree of PatternNode elements that efficiently represent the matching logic for different AST structures.

Variants

MetaVar

Meta-variable that captures matched content

Fields

meta_var: MetaVariable

The meta-variable specification (e.g., $VAR, $$$ITEMS)

Terminal

Leaf node with specific text content

Fields

text: String

Expected text content

is_named: bool

Whether this represents a named AST node

kind_id: u16

Node type identifier

Internal

Internal node with child patterns

Fields

kind_id: u16

Node type identifier

children: Vec<Self>

Child pattern nodes

Implementations

impl PatternNode

pub const fn is_trivial(&self) -> bool

pub fn fixed_string(&self) -> Cow<'_, str>

Trait Implementations

impl Clone for PatternNode

fn clone(&self) -> PatternNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatternNode

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

Formats the value using the given formatter.

impl<'r, D: Doc> From<Node<'r, D>> for PatternNode

fn from(node: Node<'r, D>) -> Self

Converts to this type from the input type.