From 70317569c6dcd9809ed4a8c425777e653ec6ca08 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Mon, 1 May 2017 18:24:31 +0300
Subject: Add hxx extension for headers

---
 build2/cc/compile.hxx | 94 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 build2/cc/compile.hxx

(limited to 'build2/cc/compile.hxx')

diff --git a/build2/cc/compile.hxx b/build2/cc/compile.hxx
new file mode 100644
index 0000000..bee13f2
--- /dev/null
+++ b/build2/cc/compile.hxx
@@ -0,0 +1,94 @@
+// file      : build2/cc/compile.hxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#ifndef BUILD2_CC_COMPILE_HXX
+#define BUILD2_CC_COMPILE_HXX
+
+#include <libbutl/path-map.hxx>
+
+#include <build2/types.hxx>
+#include <build2/utility.hxx>
+
+#include <build2/rule.hxx>
+
+#include <build2/cc/types.hxx>
+#include <build2/cc/common.hxx>
+
+namespace build2
+{
+  class depdb;
+
+  namespace cc
+  {
+    class compile: public rule, virtual common
+    {
+    public:
+      compile (data&&);
+
+      virtual match_result
+      match (action, target&, const string&) const override;
+
+      virtual recipe
+      apply (action, target&) const override;
+
+      target_state
+      perform_update (action, const target&) const;
+
+      target_state
+      perform_clean (action, const target&) const;
+
+    private:
+      void
+      append_lib_options (const scope&,
+                          cstrings&,
+                          const target&,
+                          action, lorder) const;
+
+      void
+      hash_lib_options (const scope&,
+                        sha256&,
+                        const target&,
+                        action, lorder) const;
+
+      // Mapping of include prefixes (e.g., foo in <foo/bar>) for auto-
+      // generated headers to directories where they will be generated.
+      //
+      // We are using a prefix map of directories (dir_path_map) instead of
+      // just a map in order to also cover sub-paths (e.g., <foo/more/bar> if
+      // we continue with the example). Specifically, we need to make sure we
+      // don't treat foobar as a sub-directory of foo.
+      //
+      // @@ The keys should be normalized.
+      //
+      using prefix_map = butl::dir_path_map<dir_path>;
+
+      void
+      append_prefixes (prefix_map&, const target&, const variable&) const;
+
+      void
+      append_lib_prefixes (const scope&,
+                           prefix_map&,
+                           target&,
+                           action, lorder) const;
+
+      prefix_map
+      build_prefix_map (const scope&, target&, action, lorder) const;
+
+      // Reverse-lookup target type from extension.
+      //
+      const target_type*
+      map_extension (const scope&, const string&, const string&) const;
+
+      // Header dependency injection.
+      //
+      void
+      inject (action, target&, lorder, const file&, depdb&) const;
+
+    private:
+      const string rule_id;
+    };
+  }
+}
+
+#endif // BUILD2_CC_COMPILE_HXX
-- 
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