Abstract Syntax Tree definitions for the CJC compiler.

This crate defines the complete AST node taxonomy produced by [cjc_parser]: [Program], [Stmt]/[StmtKind], [Expr]/[ExprKind], [Decl]/[DeclKind], type expressions ([TypeExpr]/[TypeExprKind]), patterns ([Pattern]/[PatternKind]), and all supporting structures (identifiers, spans, operators, etc.).

This is a leaf crate with zero internal dependencies, ensuring it can be consumed by every downstream stage of the compiler pipeline without cycles.

Submodules

• [visit] — Read-only visitor trait and walk functions for AST traversal
• [metrics] — Structural statistics (node counts, depths, feature flags)
• [validate] — Lightweight structural validation before HIR lowering
• [inspect] — Deterministic text dumps for debugging and testing
• [node_utils] — Pure query methods on [Expr], [Block], and [Program]