diff options
Diffstat (limited to 'build2/prerequisite.hxx')
| -rw-r--r-- | build2/prerequisite.hxx | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/build2/prerequisite.hxx b/build2/prerequisite.hxx index eb9f3b3..6ae6ec7 100644 --- a/build2/prerequisite.hxx +++ b/build2/prerequisite.hxx @@ -5,11 +5,10 @@ #ifndef BUILD2_PREREQUISITE_HXX #define BUILD2_PREREQUISITE_HXX -#include <unordered_set> - #include <build2/types.hxx> #include <build2/utility.hxx> +#include <build2/action.hxx> #include <build2/variable.hxx> #include <build2/target-key.hxx> #include <build2/diagnostics.hxx> @@ -182,6 +181,38 @@ namespace build2 } using prerequisites = vector<prerequisite>; + + // Helpers 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". + // + 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_; + }; + + include_type + include (action, + const target&, + const prerequisite&, + const target* = nullptr); } +#include <build2/prerequisite.ixx> + #endif // BUILD2_PREREQUISITE_HXX |