def _nt_declaration_sequence
start_index = index
if node_cache[:declaration_sequence].has_key?(index)
cached = node_cache[:declaration_sequence][index]
@index = cached.interval.end if cached
return cached
end
i0 = index
i1, s1 = index, []
r2 = _nt_declaration
s1 << r2
if r2
s3, i3 = [], index
loop do
i4, s4 = index, []
r5 = _nt_space
s4 << r5
if r5
r6 = _nt_declaration
s4 << r6
end
if s4.last
r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
r4.extend(DeclarationSequence0)
else
self.index = i4
r4 = nil
end
if r4
s3 << r4
else
break
end
end
r3 = instantiate_node(SyntaxNode,input, i3...index, s3)
s1 << r3
end
if s1.last
r1 = instantiate_node(DeclarationSequence,input, i1...index, s1)
r1.extend(DeclarationSequence1)
r1.extend(DeclarationSequence2)
else
self.index = i1
r1 = nil
end
if r1
r0 = r1
else
if input.index('', index) == index
r7 = instantiate_node(SyntaxNode,input, index...(index + 0))
r7.extend(DeclarationSequence3)
@index += 0
else
terminal_parse_failure('')
r7 = nil
end
if r7
r0 = r7
else
self.index = i0
r0 = nil
end
end
node_cache[:declaration_sequence][start_index] = r0
return r0
end