def _nt_CFWS
start_index = index
if node_cache[:CFWS].has_key?(index)
cached = node_cache[:CFWS][index]
@index = cached.interval.end if cached
return cached
end
i0, s0 = index, []
s1, i1 = [], index
loop do
i2, s2 = index, []
s3, i3 = [], index
loop do
r4 = _nt_FWS
if r4
s3 << r4
else
break
end
end
r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
s2 << r3
if r3
r5 = _nt_comment
s2 << r5
end
if s2.last
r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
r2.extend(CFWS0)
else
@index = i2
r2 = nil
end
if r2
s1 << r2
else
break
end
end
r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
s0 << r1
if r1
r7 = _nt_FWS
if r7
r6 = r7
else
r6 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r6
end
if s0.last
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
r0.extend(CFWS1)
else
@index = i0
r0 = nil
end
node_cache[:CFWS][start_index] = r0
r0
end