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-rw-r--r--build/target-key73
1 files changed, 73 insertions, 0 deletions
diff --git a/build/target-key b/build/target-key
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+++ b/build/target-key
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+// file : build/target-key -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BUILD_TARGET_KEY
+#define BUILD_TARGET_KEY
+
+#include <string>
+#include <typeindex>
+#include <ostream>
+
+#include <build/path>
+
+namespace build
+{
+ class scope;
+ class target;
+ class target_key;
+ class prerequisite_key;
+
+ // Target type.
+ //
+ struct target_type
+ {
+ std::type_index id;
+ const char* name;
+ const target_type* base;
+ target* (*const factory) (dir_path, std::string, const std::string*);
+ target* (*const search) (const prerequisite_key&);
+ };
+
+ inline std::ostream&
+ operator<< (std::ostream& os, const target_type& tt)
+ {
+ return os << tt.name;
+ }
+
+ // 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;
+
+ friend bool
+ operator< (const target_key& x, const target_key& y)
+ {
+ const std::type_index& xt (x.type->id);
+ const std::type_index& yt (y.type->id);
+
+ //@@ 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 // BUILD_TARGET_KEY