From 33cd64535d2307a2e7884ee0796e1aae42937aaf Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 19 Aug 2010 14:36:47 +0200
Subject: Add validator pass

Detect members with anonymous types.
---
 odb/validator.cxx | 144 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 odb/validator.cxx

(limited to 'odb/validator.cxx')

diff --git a/odb/validator.cxx b/odb/validator.cxx
new file mode 100644
index 0000000..a834244
--- /dev/null
+++ b/odb/validator.cxx
@@ -0,0 +1,144 @@
+// file      : odb/validator.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <iostream>
+
+#include <odb/traversal.hxx>
+#include <odb/validator.hxx>
+
+using namespace std;
+
+namespace
+{
+  struct data_member: traversal::data_member
+  {
+    data_member (bool& valid)
+        : valid_ (valid)
+    {
+    }
+
+    virtual void
+    traverse (type& m)
+    {
+      if (m.count ("transient"))
+        return;
+
+      count_++;
+      semantics::type& type (m.type ());
+
+      if (type.anonymous ())
+      {
+        // Can be a template-id (which we should handle eventually) or an
+        // anonymous type in member declaration (e.g., struct {...} m_;).
+        //
+        cerr << m.file () << ":" << m.line () << ":" << m.column () << ":"
+             << " error: unnamed type in data member declaration" << endl;
+
+        cerr << m.file () << ":" << m.line () << ":" << m.column () << ":"
+             << " info: use 'typedef' to name this type" << endl;
+
+        valid_ = false;
+      }
+
+      if (m.count ("id"))
+      {
+        if (id_ != 0)
+        {
+          cerr << m.file () << ":" << m.line () << ":" << m.column () << ":"
+               << " error: multiple object id members" << endl;
+
+          cerr << id_->file () << ":" << id_->line () << ":" << id_->column ()
+               << ": info: previous id member declared here" << endl;
+
+          valid_ = false;
+        }
+
+        id_ = &m;
+      }
+    }
+
+    bool& valid_;
+    size_t count_;
+    semantics::data_member* id_;
+  };
+
+  struct class_: traversal::class_
+  {
+    class_ (bool& valid, semantics::unit& unit)
+        : valid_ (valid), unit_ (unit), member_ (valid)
+    {
+      *this >> names_ >> member_;
+    }
+
+
+    virtual void
+    traverse (type& c)
+    {
+      if (c.file () != unit_.file () || !c.count ("object"))
+        return;
+
+      member_.count_ = 0;
+      member_.id_ = 0;
+
+      names (c);
+
+      if (member_.id_ == 0)
+      {
+        cerr << c.file () << ":" << c.line () << ":" << c.column () << ":"
+             << " error: no data member designated as object id" << endl;
+
+        cerr << c.file () << ":" << c.line () << ":" << c.column () << ":"
+             << " info: use '#pragma odb id' to specify object id member"
+             << endl;
+
+        valid_ = false;
+      }
+
+      if (member_.count_ == 0)
+      {
+        cerr << c.file () << ":" << c.line () << ":" << c.column () << ":"
+             << " error: no persistent data members in the class" << endl;
+
+        valid_ = false;
+      }
+    }
+
+    bool& valid_;
+    semantics::unit& unit_;
+
+    data_member member_;
+    traversal::names names_;
+  };
+}
+
+bool validator::
+validate (options const&,
+          semantics::unit& u,
+          semantics::path const&)
+{
+  bool valid (true);
+
+  traversal::unit unit;
+  traversal::defines unit_defines;
+  traversal::namespace_ ns;
+  class_ c (valid, u);
+
+  unit >> unit_defines >> ns;
+  unit_defines >> c;
+
+  traversal::defines ns_defines;
+
+  ns >> ns_defines >> ns;
+  ns_defines >> c;
+
+  unit.dispatch (u);
+
+  return valid;
+}
+
+validator::
+validator ()
+{
+}
-- 
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