From b9fe963646367f2da21ba1053bc086bd17b09967 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sun, 24 Apr 2011 11:27:14 +0200
Subject: Implement id_type value type pragma

---
 odb/context.cxx                   |  1 +
 odb/pragma.cxx                    | 20 ++++++++++++++++++++
 odb/relational/type-processor.cxx | 33 ++++++++++++++++++---------------
 3 files changed, 39 insertions(+), 15 deletions(-)

(limited to 'odb')

diff --git a/odb/context.cxx b/odb/context.cxx
index 2d64885..8a85dcd 100644
--- a/odb/context.cxx
+++ b/odb/context.cxx
@@ -190,6 +190,7 @@ comp_value_ (semantics::class_& c)
   r = r && c.count ("value");
   r = r && !c.count ("table");
   r = r && !c.count ("type");
+  r = r && !c.count ("id-type");
   r = r && !c.count ("value-type");
   r = r && !c.count ("index-type");
   r = r && !c.count ("key-type");
diff --git a/odb/pragma.cxx b/odb/pragma.cxx
index c09c683..8cfc3fa 100644
--- a/odb/pragma.cxx
+++ b/odb/pragma.cxx
@@ -158,6 +158,17 @@ check_decl_type (tree d, string const& name, string const& p, location_t l)
       return false;
     }
   }
+  else if (p == "id_type")
+  {
+    // Id type can only be used for types.
+    //
+    if (!TYPE_P (d))
+    {
+      error_at (l, "name %qs in db pragma %qs does not refer to a type",
+                name.c_str (), pc);
+      return false;
+    }
+  }
   else if (p == "type" ||
            p == "value_type" ||
            p == "index_type" ||
@@ -421,11 +432,13 @@ handle_pragma (cpp_reader* reader,
     tt = pragma_lex (&t);
   }
   else if (p == "type" ||
+           p == "id_type" ||
            p == "value_type" ||
            p == "index_type" ||
            p == "key_type")
   {
     // type ("<type>")
+    // id_type ("<type>")
     // value_type ("<type>")
     // index_type ("<type>")
     // key_type ("<type>")
@@ -812,6 +825,12 @@ handle_pragma_db_type (cpp_reader* reader)
 }
 
 extern "C" void
+handle_pragma_db_id_type (cpp_reader* reader)
+{
+  handle_pragma_qualifier (reader, "id_type");
+}
+
+extern "C" void
 handle_pragma_db_vtype (cpp_reader* reader)
 {
   handle_pragma_qualifier (reader, "value_type");
@@ -873,6 +892,7 @@ register_odb_pragmas (void*, void*)
   c_register_pragma_with_expansion ("db", "key_column", handle_pragma_db_kcolumn);
   c_register_pragma_with_expansion ("db", "id_column", handle_pragma_db_idcolumn);
   c_register_pragma_with_expansion ("db", "type", handle_pragma_db_type);
+  c_register_pragma_with_expansion ("db", "id_type", handle_pragma_db_id_type);
   c_register_pragma_with_expansion ("db", "value_type", handle_pragma_db_vtype);
   c_register_pragma_with_expansion ("db", "index_type", handle_pragma_db_itype);
   c_register_pragma_with_expansion ("db", "key_type", handle_pragma_db_ktype);
diff --git a/odb/relational/type-processor.cxx b/odb/relational/type-processor.cxx
index 97f4d85..511ac9e 100644
--- a/odb/relational/type-processor.cxx
+++ b/odb/relational/type-processor.cxx
@@ -31,7 +31,7 @@ namespace relational
     {
       context& c (context::current ());
       semantics::data_member& id (context::id_member (*c.object));
-      return id.get<string> ("ref-column-type");
+      return id.get<string> ("column-type");
     }
 
     struct data_member: traversal::data_member, context
@@ -113,9 +113,6 @@ namespace relational
         if (m.count ("type"))
           type = m.get<string> ("type");
 
-        if (type.empty () && t.count ("type"))
-          type = t.get<string> ("type");
-
         if (semantics::class_* c = process_object_pointer (m, t))
         {
           // This is an object pointer. The column type is the pointed-to
@@ -127,6 +124,9 @@ namespace relational
           if (type.empty () && id.count ("type"))
             type = id.get<string> ("type");
 
+          if (type.empty () && idt.count ("id-type"))
+            type = idt.get<string> ("id-type");
+
           if (type.empty () && idt.count ("type"))
             type = idt.get<string> ("type");
 
@@ -139,20 +139,18 @@ namespace relational
         }
         else
         {
-          string orig (type);
-          type = database_type (t, orig, m, ctf_none);
+          if (type.empty () && m.count ("id") && t.count ("id-type"))
+            type = t.get<string> ("id-type");
+
+          if (type.empty () && t.count ("type"))
+            type = t.get<string> ("type");
 
-          if (m.count ("id"))
-            ref_type = database_type (t, orig, m, ctf_none);
+          type = database_type (t, type, m, ctf_none);
         }
 
         if (!type.empty ())
         {
           m.set ("column-type", type);
-
-          if (!ref_type.empty ())
-            m.set ("ref-column-type", ref_type);
-
           return;
         }
 
@@ -199,9 +197,6 @@ namespace relational
         if (type.empty () && ct.count (prefix + "-type"))
           type = ct.get<string> (prefix + "-type");
 
-        if (type.empty () && t.count ("type"))
-          type = t.get<string> ("type");
-
         semantics::class_* c;
         if (obj_ptr && (c = process_object_pointer (m, t, prefix)))
         {
@@ -214,6 +209,9 @@ namespace relational
           if (type.empty () && id.count ("type"))
             type = id.get<string> ("type");
 
+          if (type.empty () && idt.count ("id-type"))
+            type = idt.get<string> ("id-type");
+
           if (type.empty () && idt.count ("type"))
             type = idt.get<string> ("type");
 
@@ -225,7 +223,12 @@ namespace relational
           type = database_type (idt, type, id, f);
         }
         else
+        {
+          if (type.empty () && t.count ("type"))
+            type = t.get<string> ("type");
+
           type = database_type (t, type, m, ctf_none);
+        }
 
         if (!type.empty ())
         {
-- 
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