Module ident 

The one identifier character class for the whole workspace (§4.1).

§4.1 allows Unicode identifiers, and the lexer, the input parser’s capture-name splitter and the debugger all have to agree about which scalars they are — so the class is stated once, here, and never re-derived.

praxis-syntax depends only on praxis-source, so every front-end crate can reach these predicates.

Functions

ident_run_len

The length in bytes of the identifier run at the start of s, or 0 when s does not start one.

is_ident

Whether the whole of s is a well-formed identifier: non-empty, starting with is_ident_start and continuing with is_ident_continue.

is_ident_continue

Whether c may continue an identifier (§4.1).

is_ident_start

Whether c may start an identifier (§4.1).