diff options
Diffstat (limited to 'build2/install/rule.hxx')
| -rw-r--r-- | build2/install/rule.hxx | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/build2/install/rule.hxx b/build2/install/rule.hxx index b9699e3..2ad3d4b 100644 --- a/build2/install/rule.hxx +++ b/build2/install/rule.hxx @@ -25,8 +25,17 @@ namespace build2 // Return NULL if this prerequisite should be ignored and pointer to its // target otherwise. The default implementation accepts all prerequsites. // + // The prerequisite it passed as an iterator allowing the filter to + // "see" inside groups. + // + using prerequisite_iterator = + prerequisite_members_range<group_prerequisites>::iterator; + + virtual const target* + filter (action, const target&, prerequisite_iterator&) const; + virtual const target* - filter (action, const target&, prerequisite_member) const; + filter (action, const target&, const prerequisite&) const; virtual recipe apply (action, target&) const override; @@ -38,10 +47,19 @@ namespace build2 // In addition to the alias rule's semantics, this rule sees through to // the group's members. // + // The default group_rule::instance matches any target for which it was + // registered. It is to be used for non-see-through groups that should + // exhibit the see-through behavior for install (see lib{} in the bin + // module for an example). + // + // We also register (for all targets) another instance of this rule that + // only matches see-through groups. + // class group_rule: public alias_rule { public: - using alias_rule::filter; // "Unhide" to make Clang happy. + virtual bool + match (action, target&, const string&) const override; // Return NULL if this group member should be ignored and pointer to its // target otherwise. The default implementation accepts all members. @@ -49,11 +67,15 @@ namespace build2 virtual const target* filter (action, const target&, const target& group_member) const; + using alias_rule::filter; // "Unhide" to make Clang happy. + virtual recipe apply (action, target&) const override; - group_rule () {} + group_rule (bool see_through_only): see_through (see_through_only) {} static const group_rule instance; + + bool see_through; }; struct install_dir; @@ -68,8 +90,17 @@ namespace build2 // target otherwise. The default implementation ignores prerequsites // that are outside of this target's project. // + // The prerequisite it passed as an iterator allowing the filter to + // "see" inside groups. + // + using prerequisite_iterator = + prerequisite_members_range<group_prerequisites>::iterator; + + virtual const target* + filter (action, const target&, prerequisite_iterator&) const; + virtual const target* - filter (action, const target&, prerequisite_member) const; + filter (action, const target&, const prerequisite&) const; virtual recipe apply (action, target&) const override; |