From 9fb791e9fad6c63fc1dac49f4d05ae63b8a3db9b Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 5 Jan 2016 11:55:15 +0200
Subject: Rename build directory/namespace to build2

---
 build2/target-key | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 build2/target-key

(limited to 'build2/target-key')

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
-- 
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