seen   uint16
}

// A rule can only be violated for "Bidi Domain names", meaning if one of the
// following categories has been observed.
func (t *Transformer) isRTL() bool {
	const isRTL = 1<<bidi.R | 1<<bidi.AL | 1<<bidi.AN
	return t.seen&isRTL != 0
}

// Reset implements transform.Transformer.
func (t *Transformer) Reset() { *t = Transformer{} }

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build !go1.10

package bidirule

func (t *Transformer) isFinal() bool {
	if !t.isRTL() {
		return true
	}
	return t.state == ruleLTRFinal || t.state == ruleRTLFinal || t.state == ruleInitial

		// Rules X2, X3, X4, X5, X5a, X5b, X5c
		switch t {
		case RLE, LRE, RLO, LRO, RLI, LRI, FSI:
			isIsolate := t.in(RLI, LRI, FSI)
			isRTL := t.in(RLE, RLO, RLI)

			// override if this is an FSI that resolves to RLI
			if t == FSI {
				isRTL = (p.determineParagraphEmbeddingLevel(i+1, p.matchingPDI[i]) == 1)
			}
			if isIsolate {
				p.resultLevels[i] = stack.lastEmbeddingLevel()