Module types_util 

Shared syn::Type shape utilities — the Option/Vec/reference peelers and short-name helpers every pipeline stage needs. One definition here replaces the per-module copies that used to live in core::unfold, core::expand, and the jnigen adapter.

Functions

bare_path_ident

The bare ident of a plain path type (ZThing → ZThing); None for references, generics, or multi-shape types.

ident

Build an identifier at call-site span.

is_result_type

True when ty is Result<…> (by last path segment).

option_inner_type

If ty is Option<Inner> (by last path segment), return Inner.

pascal_to_snake

Convert a PascalCase / camelCase identifier to snake_case (ZKeyExpr → z_key_expr). The single implementation behind the public snake_case re-export in the prebindgen-c crate, and behind cbindgen’s type-name mangling.

path_tail_ident

Last path-segment ident of a path type, generics permitting (Option<T> → Option, Vec<u8> → Vec). Contrast with bare_path_ident, which is None for any generic/non-path shape.

result_ok_type

If ty is Result<T, E>, return T.

result_parts

If ty is Result<T, E> (by last path segment), return (T, E).

vec_inner_type

If ty is Vec<Inner> (by last path segment), return Inner.