def _nt_nonterminal
start_index = index
if node_cache[:nonterminal].has_key?(index)
cached = node_cache[:nonterminal][index]
if cached
cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0, s0 = index, []
i1 = index
r2 = _nt_keyword_inside_grammar
if r2
r1 = nil
else
@index = i1
r1 = instantiate_node(SyntaxNode,input, index...index)
end
s0 << r1
if r1
i3, s3 = index, []
r4 = _nt_alpha_char
s3 << r4
if r4
s5, i5 = [], index
loop do
r6 = _nt_alphanumeric_char
if r6
s5 << r6
else
break
end
end
r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
s3 << r5
end
if s3.last
r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
r3.extend(Nonterminal0)
else
@index = i3
r3 = nil
end
s0 << r3
end
if s0.last
r0 = instantiate_node(Nonterminal,input, i0...index, s0)
r0.extend(Nonterminal1)
else
@index = i0
r0 = nil
end
node_cache[:nonterminal][start_index] = r0
r0
end