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-rw-r--r--libbuild2/config/module.cxx54
1 files changed, 54 insertions, 0 deletions
diff --git a/libbuild2/config/module.cxx b/libbuild2/config/module.cxx
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+++ b/libbuild2/config/module.cxx
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+// file : libbuild2/config/module.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#include <libbuild2/config/module.hxx>
+
+using namespace std;
+
+namespace build2
+{
+ namespace config
+ {
+ void module::
+ save_variable (const variable& var, uint64_t flags)
+ {
+ const string& n (var.name);
+
+ // First try to find the module with the name that is the longest
+ // prefix of this variable name.
+ //
+ auto& sm (saved_modules);
+ auto i (sm.find_sup (n));
+
+ // If no module matched, then create one based on the variable name.
+ //
+ if (i == sm.end ())
+ {
+ // @@ For now with 'config.' prefix.
+ //
+ i = sm.insert (string (n, 0, n.find ('.', 7)));
+ }
+
+ // Don't insert duplicates. The config.import vars are particularly
+ // susceptible to duplication.
+ //
+ saved_variables& sv (i->second);
+ auto j (sv.find (var));
+
+ if (j == sv.end ())
+ sv.push_back (saved_variable {var, flags});
+ else
+ assert (j->flags == flags);
+ }
+
+ void module::
+ save_module (const char* name, int prio)
+ {
+ saved_modules.insert (string ("config.") += name, prio);
+ }
+
+ const string module::name ("config");
+ const uint64_t module::version (1);
+ }
+}