Struct NodeData 

pub struct NodeData {
    pub main_token: u32,
    pub lhs: u32,
    pub rhs: u32,
}

Fixed-size node data (12 bytes total).

Each node in the SOA AST has:

• A tag (stored in separate tags array)
• A main_token (for span information)
• Two u32 slots (lhs and rhs) whose meaning depends on the tag

This matches Zig’s design: compact, cache-friendly, uniform size.

Fields

main_token: u32

Primary token for this node.

Used for:

• Span information in error messages
• Operator tokens (for BinaryExpr, UnaryExpr)
• Keyword tokens (for if, while, etc.)

lhs: u32

Left child or first data slot.

Interpretation depends on NodeTag - see NodeTag documentation. Common uses:

• Left operand in binary expressions
• Single child in unary expressions
• Index into extra_data for multi-child nodes
• Direct data storage (e.g., low 32 bits of u64)

rhs: u32

Right child or second data slot.

Interpretation depends on NodeTag - see NodeTag documentation. Common uses:

• Right operand in binary expressions
• Index into extra_data for multi-child nodes
• Direct data storage (e.g., high 32 bits of u64)
• Flags and small enums

Trait Implementations

impl Clone for NodeData

fn clone(&self) -> NodeData

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NodeData

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

Formats the value using the given formatter.

impl Copy for NodeData