def _nt_discrete_type
start_index = index
if node_cache[:discrete_type].has_key?(index)
cached = node_cache[:discrete_type][index]
@index = cached.interval.end if cached
return cached
end
i0 = index
if has_terminal?("text", false, index)
r1 = instantiate_node(SyntaxNode,input, index...(index + 4))
@index += 4
else
terminal_parse_failure("text")
r1 = nil
end
if r1
r0 = r1
else
if has_terminal?("image", false, index)
r2 = instantiate_node(SyntaxNode,input, index...(index + 5))
@index += 5
else
terminal_parse_failure("image")
r2 = nil
end
if r2
r0 = r2
else
if has_terminal?("audio", false, index)
r3 = instantiate_node(SyntaxNode,input, index...(index + 5))
@index += 5
else
terminal_parse_failure("audio")
r3 = nil
end
if r3
r0 = r3
else
if has_terminal?("video", false, index)
r4 = instantiate_node(SyntaxNode,input, index...(index + 5))
@index += 5
else
terminal_parse_failure("video")
r4 = nil
end
if r4
r0 = r4
else
if has_terminal?("application", false, index)
r5 = instantiate_node(SyntaxNode,input, index...(index + 11))
@index += 11
else
terminal_parse_failure("application")
r5 = nil
end
if r5
r0 = r5
else
r6 = _nt_extension_token
if r6
r0 = r6
else
@index = i0
r0 = nil
end
end
end
end
end
end
node_cache[:discrete_type][start_index] = r0
r0
end