Per-node position metadata, attached to each Tree only under
propagate_positions. empty is true when the node spanned no positioned
child (Lark's Meta.empty); the 12 numeric fields are code-point offsets and
are present only when empty is false. container_* are Lark's hidden
container span (equal to the visible fields except on ?-inlined nodes).
Per-node position metadata, attached to each
Treeonly underpropagate_positions.emptyistruewhen the node spanned no positioned child (Lark'sMeta.empty); the 12 numeric fields are code-point offsets and are present only whenemptyisfalse.container_*are Lark's hidden container span (equal to the visible fields except on?-inlined nodes).