[Scons-users] How to tell if a node is an explicit command-line argument?

[William Blevins]

Does this interest anyone?  I think it could be a very convenient debug
mechanism because environment information queries currently require scripts
modifications.

V/R,
William

On Sat, Jul 25, 2015 at 4:23 PM, William Blevins <wblevins001 at gmail.com>
wrote:

> Bill,
>
> Long story short, I was investigating making a new debug option.  The
> option would perform print env.Dump() for a node's builder environment, but
> I wanted to print on for explicit targets.
>
> Here is a working patch delta, but my check seems a bit sketchy.
>
> diff -r e6d4edfedcb4 src/engine/SCons/Node/__init__.py
> --- a/src/engine/SCons/Node/__init__.py    Mon Jun 29 07:04:53 2015 -0400
> +++ b/src/engine/SCons/Node/__init__.py    Mon Jun 29 10:54:02 2015 -0400
> @@ -1141,6 +1141,12 @@
>          the command interpreter literally."""
>          return 1
>
> +    def generate_dump(self):
> +        env = self.get_build_env()
> +        if env:
> +            return env.Dump()
> +        return None
> +
>      def render_include_tree(self):
>          """
>          Return a text representation, suitable for displaying to the
> diff -r e6d4edfedcb4 src/engine/SCons/Script/Main.py
> --- a/src/engine/SCons/Script/Main.py    Mon Jun 29 07:04:53 2015 -0400
> +++ b/src/engine/SCons/Script/Main.py    Mon Jun 29 10:54:02 2015 -0400
> @@ -300,6 +300,13 @@
>                  if tree:
>                      print
>                      print tree
> +
> +        if self.options.debug_dump:
> +            t = self.targets[0]
> +            if t.get_path() in SCons.Script.COMMAND_LINE_TARGETS:
> +                print 'Environment dump for node: ' + str(t)
> +                print t.generate_dump()
> +
>          SCons.Taskmaster.OutOfDateTask.postprocess(self)
>
>      def make_ready(self):
> @@ -653,6 +660,7 @@
>      if "findlibs" in debug_values:
>          SCons.Scanner.Prog.print_find_libs = "findlibs"
>      options.debug_includes = ("includes" in debug_values)
> +    options.debug_dump = ("dump" in debug_values)
>      print_memoizer = ("memoizer" in debug_values)
>      if "memory" in debug_values:
>          memory_stats.enable(sys.stdout)
> diff -r e6d4edfedcb4 src/engine/SCons/Script/SConsOptions.py
> --- a/src/engine/SCons/Script/SConsOptions.py    Mon Jun 29 07:04:53 2015
> -0400
> +++ b/src/engine/SCons/Script/SConsOptions.py    Mon Jun 29 10:54:02 2015
> -0400
> @@ -673,7 +673,7 @@
>          "tree"          : '; please use --tree=all instead',
>      }
>
> -    debug_options = ["count", "duplicate", "explain", "findlibs",
> +    debug_options = ["count", "duplicate", "dump", "explain", "findlibs",
>                       "includes", "memoizer", "memory", "objects",
>                       "pdb", "prepare", "presub", "stacktrace",
>                       "time"]
>
>
> V/R,
> William
>
> On Sat, Jul 25, 2015 at 4:00 PM, William Blevins <wblevins001 at gmail.com>
> wrote:
>
>> SCons.Node has a function set_explicit, but after reading the function
>> description, I don't think that is what this does?
>>
>> On Sat, Jul 25, 2015 at 3:56 PM, Bill Deegan <bill at baddogconsulting.com>
>> wrote:
>>
>>> William,
>>>
>>>
>>> On Sat, Jul 25, 2015 at 3:53 PM, William Blevins <wblevins001 at gmail.com>
>>> wrote:
>>>
>>>>
>>>>
>>>> On Sat, Jul 25, 2015 at 3:52 PM, William Blevins <wblevins001 at gmail.com
>>>> > wrote:
>>>>
>>>>> Yes, but here is an example in case:
>>>>>
>>>>> File "a.c" exists
>>>>> File "b.c" exists
>>>>>
>>>>> FS node representing "a.c" is node_a and representing "b.c" is node_b
>>>>>
>>>>> If I run "scons" or "scons a.o", then node_b.is_explicit_target (or
>>>>> some other function name) returns False.
>>>>> If I run "scons b.o" or "scons a.o b.o", then
>>>>> node_b.is_explicit_target return True for both cases, but
>>>>> node_b.is_explicit_target return True only for the second case.
>>>>>
>>>>>
>>>> Copy-pasta error fixed below:
>>>> If I run "scons b.o" or "scons a.o b.o", then node_b.is_explicit_target
>>>> return True for both cases, but node_a.is_explicit_target return True only
>>>> for the second case.
>>>>
>>>
>>> Isn't this what you'd expect?
>>> I guess I'm missing where this doesn't answer your original question?
>>> Also you can get the list of  command line arguments raw..
>>>
>>> -Bill
>>>
>>>
>>>>
>>>>
>>>>
>>>>> V/R,
>>>>> William
>>>>>
>>>>> On Sat, Jul 25, 2015 at 3:32 PM, Bill Deegan <
>>>>> bill at baddogconsulting.com> wrote:
>>>>>
>>>>>> So you mean if scons was run as: scons a/b/c/d.exe ?
>>>>>>
>>>>>> On Sat, Jul 25, 2015 at 2:13 PM, William Blevins <
>>>>>> wblevins001 at gmail.com> wrote:
>>>>>>
>>>>>>> Is there an easy way to determine if a Node was specified explicitly
>>>>>>> as a command-line argument?
>>>>>>>
>>>>>>> V/R,
>>>>>>> William
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Scons-users mailing list
>>>>>>> Scons-users at scons.org
>>>>>>> https://pairlist4.pair.net/mailman/listinfo/scons-users
>>>>>>>
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Scons-users mailing list
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>>>>>>
>>>>>>
>>>>>
>>>>
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>>>>
>>>
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>>
>
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