def _nt_sequence
start_index = index
if node_cache[:sequence].has_key?(index)
cached = node_cache[:sequence][index]
@index = cached.interval.end if cached
return cached
end
i0, s0 = index, []
r1 = _nt_labeled_sequence_primary
s0 << r1
if r1
s2, i2 = [], index
loop do
i3, s3 = index, []
r4 = _nt_space
s3 << r4
if r4
r5 = _nt_labeled_sequence_primary
s3 << r5
end
if s3.last
r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
r3.extend(Sequence0)
else
self.index = i3
r3 = nil
end
if r3
s2 << r3
else
break
end
end
if s2.empty?
self.index = i2
r2 = nil
else
r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
end
s0 << r2
if r2
r6 = _nt_node_class_declarations
s0 << r6
end
end
if s0.last
r0 = instantiate_node(Sequence,input, i0...index, s0)
r0.extend(Sequence1)
r0.extend(Sequence2)
else
self.index = i0
r0 = nil
end
node_cache[:sequence][start_index] = r0
return r0
end