def _nt_content_type
start_index = index
if node_cache[:content_type].has_key?(index)
cached = node_cache[:content_type][index]
if cached
cached = SyntaxNode.new(input, index...(index + 1)) if cached == true
@index = cached.interval.end
end
return cached
end
i0, s0 = index, []
r1 = _nt_main_type
s0 << r1
if r1
if has_terminal?("/", false, index)
r2 = instantiate_node(SyntaxNode,input, index...(index + 1))
@index += 1
else
terminal_parse_failure("/")
r2 = nil
end
s0 << r2
if r2
r3 = _nt_sub_type
s0 << r3
if r3
s4, i4 = [], index
loop do
i5, s5 = index, []
r6 = _nt_CFWS
s5 << r6
if r6
s7, i7 = [], index
loop do
if has_terminal?(";", false, index)
r8 = instantiate_node(SyntaxNode,input, index...(index + 1))
@index += 1
else
terminal_parse_failure(";")
r8 = nil
end
if r8
s7 << r8
else
break
end
end
r7 = instantiate_node(SyntaxNode,input, i7...index, s7)
s5 << r7
if r7
r9 = _nt_parameter
s5 << r9
if r9
r10 = _nt_CFWS
s5 << r10
end
end
end
if s5.last
r5 = instantiate_node(SyntaxNode,input, i5...index, s5)
r5.extend(ContentType0)
else
@index = i5
r5 = nil
end
if r5
s4 << r5
else
break
end
end
r4 = instantiate_node(SyntaxNode,input, i4...index, s4)
s0 << r4
end
end
end
if s0.last
r0 = instantiate_node(SyntaxNode,input, i0...index, s0)
r0.extend(ContentType1)
r0.extend(ContentType2)
else
@index = i0
r0 = nil
end
node_cache[:content_type][start_index] = r0
r0
end