Module ast 

Syntax tree produced by the dialect parsers.

Invariants: spans are half-open ranges of Unicode scalar offsets into the original pattern text. Code points are u32 (not char) because ECMAScript without the Unicode flag can name lone surrogates such as \uD83D.

Structs

Class

A bracketed class, or a lone shorthand outside brackets.

FlagDelta

Scoped inline flag changes, (?i-m:...).

Node

A node with its source span.

PropertyRef

A resolved \p{...} / \P{...} reference: the name is already validated against the pinned Unicode data.

Span

Half-open range [start, end) in scalar-value offsets.

Enums

Assertion

Zero-width assertions.

ClassExpr

A Rust bracketed class with nesting and set operations.

ClassItem

One member of a character class.

NodeKind

Node shape.

PropKind

Which Unicode property family a \p{...} refers to.

SetOp

Set operators of Rust character classes.

Shorthand

\d, \w, \s and negations. Their meaning is per dialect and alphabet.