expr_macro_failure

func expr_macro_failure(code: String, message: String, span: Range<Int>) -> ExprMacroOutput

Builds the flattened expression-macro representation of a failure.

Source, parse outcome, and identifier metadata are empty; the supplied code, message, and span cross the service boundary unchanged.

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pub func expr_macro_failure(code: String, message: String, span: Range<Int>) -> ExprMacroOutput {
	ExprMacroOutput(
		source: "",
		outcome: .none,
		metadata: SyntaxMetadataOutput(identifiers: []),
		failure_code: .some(code),
		failure_message: .some(message),
		failure_start: span.lower,
		failure_end: span.upper
	)
}