diff options
Diffstat (limited to 'build2/target-key')
-rw-r--r-- | build2/target-key | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/build2/target-key b/build2/target-key new file mode 100644 index 0000000..cd8e270 --- /dev/null +++ b/build2/target-key @@ -0,0 +1,55 @@ +// file : build2/target-key -*- C++ -*- +// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd +// license : MIT; see accompanying LICENSE file + +#ifndef BUILD2_TARGET_KEY +#define BUILD2_TARGET_KEY + +#include <map> +#include <string> +#include <ostream> +#include <functional> // reference_wrapper + +#include <butl/utility> // compare_c_string + +#include <build2/types> +#include <build2/target-type> + +namespace build2 +{ + // Light-weight (by being shallow-pointing) target key. + // + class target_key + { + public: + mutable const target_type* type; + mutable const dir_path* dir; + mutable const std::string* name; + mutable const std::string* const* ext; // Note: only *ext can be NULL. + + friend bool + operator< (const target_key& x, const target_key& y) + { + const target_type* xt (x.type); + const target_type* yt (y.type); + + //@@ TODO: use compare() to compare once. + + // Unspecified and specified extension are assumed equal. The + // extension strings are from the pool, so we can just compare + // pointers. + // + return + (xt < yt) || + (xt == yt && *x.name < *y.name) || + (xt == yt && *x.name == *y.name && *x.dir < *y.dir) || + (xt == yt && *x.name == *y.name && *x.dir == *y.dir && + *x.ext != nullptr && *y.ext != nullptr && **x.ext < **y.ext); + } + }; + + std::ostream& + operator<< (std::ostream&, const target_key&); // Defined in target.cxx +} + +#endif // BUILD2_TARGET_KEY |