[Scons-dev] How to traverse the graph after files are read

[Dirk Bächle]

Hi all,

On 20.05.2015 09:01, anatoly techtonik wrote:
> On Tue, May 19, 2015 at 3:19 PM, Gary Oberbrunner <garyo at oberbrunner.com> wrote:
>> At the end of your SConstruct, start with the target nodes and recurse into
>> each node.sources .

the "recurse into" is what's important here, Anatoly.

>> [...]
>
> But the logic what happens here and how FS object is transformed
> into DAG, escapes me.

There is no real DAG stored anywhere within the code, like an object that you can grab and visit its attributes or traverses its nodes.
With the call

     else:

         # Build the targets
         nodes = _build_targets(fs, options, targets, target_top)
         if not nodes:

SCons starts to dynamically expand the list of children for each given target (which includes the so-far detected children of other 
targets as well). So I don't think that you will get at what you actually want...but you can try to do a "recursion" light as Gary 
suggested.

Best regards,

Dirk