[Scons-dev] SCons Node ID

[anatoly techtonik]

On Fri, Sep 4, 2015 at 1:48 PM, Gary Oberbrunner <garyo at oberbrunner.com>
wrote:
>
> On Fri, Sep 4, 2015 at 4:24 AM, anatoly techtonik <techtonik at gmail.com>
> wrote:
>
>> On Fri, Sep 4, 2015 at 10:10 AM, Dirk Bächle <tshortik at gmx.de> wrote:
>>
>>> On 04.09.2015 06:16, anatoly techtonik wrote:
>>>
>>>> I have another question about SCons. If I specify target explicitly, it
>>>> ends up
>>>> as str in BUILD_TARGETS and it is impossible to traverse. How do I
>>>> transform it to Node if I don't know the type? I.e. how to lookup Node
>>>> object
>>>> by name?
>>>>
>>>>
>>> you mean you explicitly specify a target "x" on the command line, but
>>> you don't know whether it's a File or a Dir?
>>> Can you come up with a short user scenario for this? What is it that
>>> you're trying to accomplish?
>>>
>>
>> The short user scenario - a person want to build wesnoth and executes
>> `scons`. The output says that possible targets are "wesnoth" and
>> "wesnothd". Because I don't have dependencies for "wesnoth", I specify
>> "wesnothd" which ends up as str in BUILD_TARGETS and I can not traverse it.
>>
>
> Normally you just say e = Entry(str), which converts the string to an
> Entry, which is a Node whose type is unknown.  At various points Entry
> nodes are converted to their correct type once it can be deduced
>

This sound very magic. For now I used the `arg2nodes_lookups` solution.
Here is the result:
https://gist.github.com/techtonik/8f53e9866beed570ead4#file-treelog-py

The .json file can be visualized here:
http://techtonik.bitbucket.org/graphs/index.html

-- 
anatoly t.
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