[Omake] scanners not considered valid targets by "target-is-proper"?

[Aleksey Nogin]

On 19.01.2007 01:50, Erick Tryzelaar wrote:

> I was playing around with target-is-proper, and it appears to not work 
> for scanners. Is there a reason for this? Here's a demonstration of the 
> problem:
> 
> % .SCANNER: baz: bar
[...]
> % echo $(target-is-proper baz)
> false

Note that scanners have a separate namespace - the "Scanner baz" has 
nothing to do with the "file baz" (and both are different from the 
"phony target baz"). So your test case was asking a wrong question and 
getting a correct answer for that question.

Currently, there is no good way of creating a "Scanner" value in OMake 
code. I've just committed a change, allowing the "target" and 
"dependencies" functions to work on rule values (in a limited way). So 
now I can do the following:

% X =
X>        X =
X>           .SCANNER: baz: bar
rule>           echo hi
rule>           .
.
X>           .
.
- : <rules:
         rule {
            target = <scanner /home/isl/anogin/SwarmVision/baz>
            effects = <scanner /home/isl/anogin/SwarmVision/baz>
            locks =
            sources = /home/isl/anogin/SwarmVision/bar
            scanners =
            commands =
               {
                  command_dir = /home/isl/anogin/SwarmVision;
                  command_sources = /home/isl/anogin/SwarmVision/bar
                  command_body = "echo hi" : Sequence
               }
         }>
% Y = $(target $(X))
- : <scanner /home/isl/anogin/SwarmVision/baz> : File
% target-is-proper($Y)
- : <data "true"> : String

Aleksey