Commit Graph

8 Commits

Author SHA1 Message Date
Brad King b5ac8b8aa7 Fortran: Add support for submodule syntax in dependency scanning
Fortran 2008 [1] adds support for a new syntax related to modules:

    submodule ( ParentModule ) SubModule
    submodule ( ParentModule : SubModule ) NestedSubModule

Both of these mean that the current source file requires the module
`ParentModule` to be available if it is not provided in the current
file.  Teach our Fortran dependency scanner to parse this syntax to
extract this relationship.  For now simply tolerate the nested submodule
case and extract only the dependency it expresses on the main module.
Further work will be needed to extract dependencies among nested
submodules.

[1] http://fortranwiki.org/fortran/show/Fortran+2008

Closes: #16234
2016-09-20 09:18:47 -04:00
Brad King bdcc1f517e cmFortranParser: Skip module procedures/functions/subroutines
Fortran allows the syntax

  MODULE PROCEDURE ...
  MODULE FUNCTION ...
  MODULE SUBROUTINE ...

to declare procedures/functions/subroutines that are members of modules.
Do not treat such syntax as the definition of a module with one of these
names.

Issue: #16234
2016-09-20 09:08:28 -04:00
Brad King 695f0d0d3a cmFortranParser: Parse keywords as lexical tokens
Teach the lexer to match and return specific Fortran keywords as tokens.
Update the parser to use these instead of always using a WORD token and
then checking the text.  This avoids extra string comparisons and will
allow more grammar productions to be unambiguously added later for
additional Fortran statements.
2016-09-08 09:40:02 -04:00
Brad King 1619fb46a8 cmFortranParser: Simplify grammar by skipping unknown statements
Our Fortran grammar is a bare minimum to extract dependencies.
Other statement syntax can be ignored, so simply skip to the
end of unrecognized statements.  This allows some of our existing
productions to be dropped.
2016-09-08 09:40:02 -04:00
Brad King 8c65a5017f cmFortranParser: Revise indentation style to match rest of CMake
While at it, remove unused token CPP_TOENDL.
2016-09-06 15:52:40 -04:00
Brad King ba819f49df cmFortranParser: Parse #line directives
Teach the lexer to extract the #line directive prefix and line number as
a new token type.  Teach the parser to recognize this token followed by
a string as the file name (plus possibly other content).  Report the
named file as included by the source file.
2015-11-02 15:29:52 -05:00
Brad King ecca8fd908 cmFortranParser: Port to bison 3
Use %-directives to specify the scanner/lexer arguments and update the
yyerror signature.  Reduce the list of post-bison modifications needed.
2015-07-27 09:45:36 -04:00
Kitware Robot 98b9645bce Rename Fortran parser infrastructure to drop "Depends" prefix
The parser can be re-used outside cmDependsFortran or the cmDepends
class hierarchy so drop the "Depends" from its name:

 rename 's/DependsFortran([A-Za-z0-9_])/Fortran$1/' Source/*.*
 sed -i 's/DependsFortran\([A-Za-z0-9_]\)/Fortran\1/g' Source/*.*
 sed -i 's/FortranInternals/DependsFortranInternals/g' Source/*.*

Also manually fix Source/CMakeLists.txt source file ordering.
2015-07-27 09:45:35 -04:00