def _nt_obs_day
start_index = index
if node_cache[:obs_day].has_key?(index)
cached = node_cache[:obs_day][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_CFWS
if r2
r1 = r2
else
r1 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r1
if r1
i3 = index
r4 = _nt_DIGIT
if r4
r3 = r4
else
i5, s5 = index, []
r6 = _nt_DIGIT
s5 << r6
if r6
r7 = _nt_DIGIT
s5 << r7
end
if s5.last
r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
r5.extend(ObsDay0)
else
@index = i5
r5 = nil
end
if r5
r3 = r5
else
@index = i3
r3 = nil
end
end
s0 << r3
if r3
r9 = _nt_CFWS
if r9
r8 = r9
else
r8 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r8
end
end
if s0.last
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
r0.extend(ObsDay1)
else
@index = i0
r0 = nil
end
node_cache[:obs_day][start_index] = r0
r0
end