def _nt_occurrence_range
start_index = index
if node_cache[:occurrence_range].has_key?(index)
cached = node_cache[:occurrence_range][index]
if cached
cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0, s0 = index, []
r2 = _nt_space
if r2
r1 = r2
else
r1 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r1
if r1
s3, i3 = [], index
loop do
if has_terminal?('\G[0-9]', true, index)
r4 = true
@index += 1
else
r4 = nil
end
if r4
s3 << r4
else
break
end
end
r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
s0 << r3
if r3
if has_terminal?('..', false, index)
r5 = instantiate_node(SyntaxNode,input, index...(index + 2))
@index += 2
else
terminal_parse_failure('..')
r5 = nil
end
s0 << r5
if r5
s6, i6 = [], index
loop do
if has_terminal?('\G[0-9]', true, index)
r7 = true
@index += 1
else
r7 = nil
end
if r7
s6 << r7
else
break
end
end
r6 = instantiate_node(SyntaxNode,input, i6...index, s6)
s0 << r6
end
end
end
if s0.last
r0 = instantiate_node(OccurrenceRange,input, i0...index, s0)
r0.extend(OccurrenceRange0)
else
@index = i0
r0 = nil
end
node_cache[:occurrence_range][start_index] = r0
r0
end