[cmake-developers] What about #line like feature in cmake language?

[Nicolas Desprès]

On Thu, May 22, 2014 at 3:16 PM, Brad King <brad.king at kitware.com> wrote:
>
> One remaining challenge is CMAKE_CURRENT_LIST_FILE and
> CMAKE_CURRENT_LIST_LINE.  Since the "current file" is not
> handled by the lexer these may not be consistent unless some
> kind of refactoring is done in the language implementation.
> However, it is not clear whether CMAKE_CURRENT_LIST_FILE can
> safely refer back to some transformed location because sometimes
> code uses it to look next to the file being processed to locate
> other files.  If some source location mapping is in place then
> that may not be well-defined.
>

I think we should not touch those variables because they have dynamic
behavior and if they are used in the generated code I expect the current
behavior. Why not adding __FILE__ and __LINE__ tokens that would be
expanded by the lexer with the file name and line number last set by
#cmake-source-line?

-- 
Nicolas Desprès
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