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package commitquery
// Marks returns the mark bits of one internal node.
func (ctx *Context) Marks(idx NodeIndex) markBits {
return ctx.nodes[idx].marks
}
// HasAnyMarks reports whether one internal node has any requested bit.
func (ctx *Context) HasAnyMarks(idx NodeIndex, bits markBits) bool {
return ctx.nodes[idx].marks&bits != 0
}
// HasAllMarks reports whether one internal node already has all requested bits.
func (ctx *Context) HasAllMarks(idx NodeIndex, bits markBits) bool {
return ctx.nodes[idx].marks&bits == bits
}
// SetMarks ORs one set of mark bits into one internal node.
func (ctx *Context) SetMarks(idx NodeIndex, bits markBits) {
newBits := bits &^ ctx.nodes[idx].marks
if newBits == 0 {
return
}
ctx.trackTouched(idx)
ctx.nodes[idx].marks |= bits
}
// ClearMarks removes one set of mark bits from one internal node.
func (ctx *Context) ClearMarks(idx NodeIndex, bits markBits) {
if ctx.nodes[idx].marks&bits == 0 {
return
}
ctx.trackTouched(idx)
ctx.nodes[idx].marks &^= bits
}
// BeginMarkPhase starts one tracked mark-mutation phase.
func (ctx *Context) BeginMarkPhase() {
ctx.markPhase++
if ctx.markPhase == 0 {
ctx.markPhase++
for i := range ctx.nodes {
ctx.nodes[i].touchedPhase = 0
}
}
ctx.touched = ctx.touched[:0]
}
// ClearTouchedMarks clears the provided bits from all nodes touched in the
// current mark phase.
func (ctx *Context) ClearTouchedMarks(bits markBits) {
for _, idx := range ctx.touched {
ctx.nodes[idx].marks &^= bits
}
}
func (ctx *Context) trackTouched(idx NodeIndex) {
if ctx.nodes[idx].touchedPhase == ctx.markPhase {
return
}
ctx.nodes[idx].touchedPhase = ctx.markPhase
ctx.touched = append(ctx.touched, idx)
}
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