capture_decl - syntax

func capture_decl(source_id: Int, source: String, input: TokenRange, context: &SyntaxContext) -> SyntaxResult<Decl>

Validates input as one top-level declaration with use-site hygiene.

Declaration grammar depends on context; wrapper targets inside nominal bodies should use capture_decl_in instead so methods and members parse correctly.

View Source

pub func capture_decl(source_id: Int, source: String, input: TokenRange, context: &SyntaxContext) -> SyntaxResult<Decl> {
	let outcome = parse_decl_tokens(source: source, input: input)
	if let .some(failure) = parse_failure(outcome: outcome, fallback: input.span) {
		return SyntaxResult<Decl>(value: .none, failure: .some(failure))
	}
	let raw = raw_from_range(source_id: source_id, source: source, input: input, category: .decl, context: context, origin: .use_site)
	SyntaxResult<Decl>(value: .some(Syntax<Decl>(raw: raw)), failure: .none)
}