def _nt_FWS
start_index = index
if node_cache[:FWS].has_key?(index)
cached = node_cache[:FWS][index]
if cached
cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0 = index
i1, s1 = index, []
s2, i2 = [], index
loop do
r3 = _nt_WSP
if r3
s2 << r3
else
break
end
end
r2 = instantiate_node(SyntaxNode,input, i2...index, s2)
s1 << r2
if r2
r4 = _nt_CRLF
s1 << r4
if r4
s5, i5 = [], index
loop do
r6 = _nt_WSP
if r6
s5 << r6
else
break
end
end
if s5.empty?
@index = i5
r5 = nil
else
r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
end
s1 << r5
end
end
if s1.last
r1 = instantiate_node(SyntaxNode,input, i1...index, s1)
r1.extend(FWS0)
else
@index = i1
r1 = nil
end
if r1
r0 = r1
else
i7, s7 = index, []
r8 = _nt_CRLF
s7 << r8
if r8
s9, i9 = [], index
loop do
r10 = _nt_WSP
if r10
s9 << r10
else
break
end
end
if s9.empty?
@index = i9
r9 = nil
else
r9 = instantiate_node(SyntaxNode,input, i9...index, s9)
end
s7 << r9
end
if s7.last
r7 = instantiate_node(SyntaxNode,input, i7...index, s7)
r7.extend(FWS1)
else
@index = i7
r7 = nil
end
if r7
r0 = r7
else
r11 = _nt_obs_FWS
if r11
r0 = r11
else
@index = i0
r0 = nil
end
end
end
node_cache[:FWS][start_index] = r0
r0
end