PureYAML/Sources/Model/SourceRange.swift
Mihaela Mihaljevic 3f3ce310b1 feat(parsing): opt-in located parse with source spans on every node
Add parseLocated / parseStreamLocated, returning a Model.LocatedValue
tree parallel in shape to Value, where every node carries its source
span (1-based line/column) and located children. Collections span from
their opening to closing event; scalars carry a start-anchored span;
aliases and merge-inherited pairs honestly point at their reference site.

The plain Value, its equality, and the conformance oracle are untouched:
locations are built only when the streaming composer is asked for them
(tracksLocations), behind new entry points, so the default value path is
byte-identical. A whole-suite test proves the located projection equals
a plain parse for every passing case (402/402), including through merge
keys and aliases, and the canonical-event and gap gates stay green.
2026-06-26 00:57:55 +02:00

21 lines
793 B
Swift

public extension PureYAML.Model {
/// A source span for a value-tree node: a start and end ``SourcePosition``. A collection
/// spans from its opening to its closing event; a scalar carries a start-anchored span
/// (start equal to end), because the event stream records a scalar's start mark only.
struct SourceRange: Equatable, Hashable, Sendable {
public var start: SourcePosition
public var end: SourcePosition
public init(start: SourcePosition, end: SourcePosition) {
self.start = start
self.end = end
}
/// A zero-width span at a single position, used when only a point is known.
public init(at position: SourcePosition) {
start = position
end = position
}
}
}