Method allocNodeSlice

internal/api/encoder/decoder.go:100–104

allocNodeSlice returns a zero-length slice with the given capacity, backed by the pre-allocated nodeArena. This avoids a heap allocation per NodeList.

(capacity int)

// allocNodeSlice returns a zero-length slice with the given capacity, backed by
// the pre-allocated nodeArena. This avoids a heap allocation per NodeList.
func (d *astDecoder) allocNodeSlice(capacity int) []*ast.Node {
	start := len(d.nodeArena)
	d.nodeArena = d.nodeArena[:start+capacity]
	return d.nodeArena[start : start : start+capacity]
}

// nodeField reads a uint32 field from node i at the given field offset.
func (d *astDecoder) nodeField(i int, field int) uint32 {