diff options
Diffstat (limited to 'libbuild2/target.hxx')
| -rw-r--r-- | libbuild2/target.hxx | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/libbuild2/target.hxx b/libbuild2/target.hxx index 62b6753..f140122 100644 --- a/libbuild2/target.hxx +++ b/libbuild2/target.hxx @@ -38,6 +38,23 @@ namespace build2 LIBBUILD2_SYMEXPORT const target* search_existing (const prerequisite&); + // Prerequisite inclusion/exclusion (see include() function below). + // + class include_type + { + public: + enum value {excluded, adhoc, normal}; + + include_type (value v): v_ (v) {} + include_type (bool v): v_ (v ? normal : excluded) {} + + operator value () const {return v_;} + explicit operator bool () const {return v_ != excluded;} + + private: + value v_; + }; + // Recipe. // // The returned target state is normally changed or unchanged. If there is @@ -798,6 +815,21 @@ namespace build2 uint8_t unmark (const target*&); + // Helper for dealing with the prerequisite inclusion/exclusion (the + // 'include' buildfile variable, see var_include in context.hxx). + // + // Note that the include(prerequisite_member) overload is also provided. + // + // @@ Maybe this filtering should be incorporated into *_prerequisites() and + // *_prerequisite_members() logic? Could make normal > adhoc > excluded and + // then pass the "threshold". + // + include_type + include (action, + const target&, + const prerequisite&, + const target* = nullptr); + // A "range" that presents the prerequisites of a group and one of // its members as one continuous sequence, or, in other words, as // if they were in a single container. The group's prerequisites |