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// file : odb/pragma.cxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
// license : GNU GPL v3; see accompanying LICENSE file
#include <odb/pragma.hxx>
using namespace std;
loc_pragmas loc_pragmas_;
decl_pragmas decl_pragmas_;
static tree
parse_scoped_name (tree& t,
cpp_ttype& tt,
string& name,
bool is_type,
string const& prag)
{
tree scope, id;
if (tt == CPP_SCOPE)
{
name += "::";
scope = global_namespace;
tt = pragma_lex (&t);
}
else
scope = current_scope ();
while (true)
{
if (tt != CPP_NAME)
{
error ("invalid name in db pragma %qs", prag.c_str ());
return 0;
}
id = t;
name += IDENTIFIER_POINTER (t);
tt = pragma_lex (&t);
if (tt == CPP_SCOPE)
{
scope = lookup_qualified_name (scope, id, false, false);
if (scope == error_mark_node)
{
error ((is_type
? "unable to resolve type name %qs in db pragma %qs"
: "unable to resolve name %qs in db pragma %qs"),
name.c_str (), prag.c_str ());
return 0;
}
if (TREE_CODE (scope) == TYPE_DECL)
scope = TREE_TYPE (scope);
name += "::";
tt = pragma_lex (&t);
}
else
break;
}
tree decl (lookup_qualified_name (scope, id, is_type, false));
if (decl == error_mark_node)
{
error ((is_type
? "unable to resolve type name %qs in db pragma %qs"
: "unable to resolve name %qs in db pragma %qs"),
name.c_str (), prag.c_str ());
return 0;
}
// Get the actual type if this is a TYPE_DECL.
//
if (is_type && TREE_CODE (decl) == TYPE_DECL)
decl = TREE_TYPE (decl);
return decl;
}
bool
check_decl_type (tree d, string const& name, string const& p, location_t l)
{
int tc (TREE_CODE (d));
char const* pc (p.c_str ());
if (p == "member" ||
p == "id" ||
p == "auto" ||
p == "column" ||
p == "transient")
{
if (tc != FIELD_DECL)
{
error_at (l, "name %qs in db pragma %qs does not refer to "
"a data member", name.c_str (), pc);
return false;
}
}
else if (p == "object" ||
p == "table")
{
if (tc != RECORD_TYPE)
{
error_at (l, "name %qs in db pragma %qs does not refer to a class",
name.c_str (), pc);
return false;
}
}
else if (p == "value")
{
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")
{
// Type can be used for both members and types.
//
if (tc != FIELD_DECL && !TYPE_P (d))
{
error_at (l, "name %qs in db pragma %qs does not refer to "
"a type or data member", name.c_str (), pc);
return false;
}
}
else
{
error ("unknown db pragma %qs", pc);
return false;
}
return true;
}
static void
handle_pragma (string const& p, tree decl, string const& decl_name)
{
tree t;
cpp_ttype tt;
char const* pc (p.c_str ());
string val;
location_t loc (input_location);
if (p == "table")
{
// table ("<name>")
//
// Make sure we've got the correct declaration type.
//
if (decl != 0 && !check_decl_type (decl, decl_name, p, loc))
return;
if (pragma_lex (&t) != CPP_OPEN_PAREN)
{
error ("%qs expected after db pragma %qs", "(", pc);
return;
}
tt = pragma_lex (&t);
if (tt != CPP_STRING)
{
error ("table name expected in db pragma %qs", pc);
return;
}
val = TREE_STRING_POINTER (t);
if (pragma_lex (&t) != CPP_CLOSE_PAREN)
{
error ("%qs expected at the end of db pragma %qs", ")", pc);
return;
}
tt = pragma_lex (&t);
}
else if (p == "id")
{
// id
//
// Make sure we've got the correct declaration type.
//
if (decl != 0 && !check_decl_type (decl, decl_name, p, loc))
return;
tt = pragma_lex (&t);
}
else if (p == "auto")
{
// auto
//
// Make sure we've got the correct declaration type.
//
if (decl != 0 && !check_decl_type (decl, decl_name, p, loc))
return;
tt = pragma_lex (&t);
}
else if (p == "column")
{
// column ([<identifier>,] "<name>")
//
// Make sure we've got the correct declaration type.
//
if (decl != 0 && !check_decl_type (decl, decl_name, p, loc))
return;
if (pragma_lex (&t) != CPP_OPEN_PAREN)
{
error ("%qs expected after db pragma %qs", "(", pc);
return;
}
tt = pragma_lex (&t);
if (tt != CPP_STRING)
{
error ("column name expected in db pragma %qs", pc);
return;
}
val = TREE_STRING_POINTER (t);
if (pragma_lex (&t) != CPP_CLOSE_PAREN)
{
error ("%qs expected at the end of db pragma %qs", ")", pc);
return;
}
tt = pragma_lex (&t);
}
else if (p == "type")
{
// type ("<type>")
//
// Make sure we've got the correct declaration type.
//
if (decl != 0 && !check_decl_type (decl, decl_name, p, loc))
return;
if (pragma_lex (&t) != CPP_OPEN_PAREN)
{
error ("%qs expected after db pragma %qs", "(", pc);
return;
}
tt = pragma_lex (&t);
if (tt != CPP_STRING)
{
error ("type name expected in db pragma %qs", pc);
return;
}
val = TREE_STRING_POINTER (t);
if (pragma_lex (&t) != CPP_CLOSE_PAREN)
{
error ("%qs expected at the end of db pragma %qs", ")", pc);
return;
}
tt = pragma_lex (&t);
}
else if (p == "transient")
{
// transient
//
// Make sure we've got the correct declaration type.
//
if (decl != 0 && !check_decl_type (decl, decl_name, p, loc))
return;
tt = pragma_lex (&t);
}
else
{
error ("unknown db pragma %qs", pc);
return;
}
// Record this pragma.
//
pragma prag (p, val, loc);
if (decl)
decl_pragmas_[decl].insert (prag);
else
{
tree scope (current_scope ());
if (!CLASS_TYPE_P (scope))
scope = global_namespace;
loc_pragmas_[scope].push_back (prag);
}
// See if there are any more pragmas.
//
if (tt == CPP_NAME)
{
handle_pragma (IDENTIFIER_POINTER (t), decl, decl_name);
}
else if (tt != CPP_EOF)
error ("unexpected text after %qs in db pragma", p.c_str ());
}
static void
handle_pragma_qualifier (string const& p)
{
tree t;
cpp_ttype tt;
char const* pc (p.c_str ());
tree decl (0);
string decl_name;
location_t loc (input_location);
// Pragma qualifiers.
//
if (p == "object")
{
// object [(<identifier>)]
//
tt = pragma_lex (&t);
if (tt == CPP_OPEN_PAREN)
{
tt = pragma_lex (&t);
if (tt == CPP_NAME || tt == CPP_SCOPE)
{
decl = parse_scoped_name (t, tt, decl_name, true, p);
if (decl == 0)
return;
// Make sure we've got the correct declaration type.
//
if (!check_decl_type (decl, decl_name, p, loc))
return;
if (tt != CPP_CLOSE_PAREN)
{
error ("%qs expected at the end of db pragma %qs", ")", pc);
return;
}
tt = pragma_lex (&t);
}
else
{
error ("type name expected in db pragma %qs", pc);
return;
}
}
}
else if (p == "value")
{
// value [(<identifier>)]
//
tt = pragma_lex (&t);
if (tt == CPP_OPEN_PAREN)
{
tt = pragma_lex (&t);
if (tt == CPP_NAME || tt == CPP_SCOPE)
{
decl = parse_scoped_name (t, tt, decl_name, true, p);
if (decl == 0)
return;
// Make sure we've got the correct declaration type.
//
if (!check_decl_type (decl, decl_name, p, loc))
return;
if (tt != CPP_CLOSE_PAREN)
{
error ("%qs expected at the end of db pragma %qs", ")", pc);
return;
}
tt = pragma_lex (&t);
}
else
{
error ("type name expected in db pragma %qs", pc);
return;
}
}
}
else if (p == "member")
{
// member [(<identifier>)]
//
tt = pragma_lex (&t);
if (tt == CPP_OPEN_PAREN)
{
tt = pragma_lex (&t);
if (tt == CPP_NAME || tt == CPP_SCOPE)
{
decl = parse_scoped_name (t, tt, decl_name, false, p);
if (decl == 0)
return;
// Make sure we've got the correct declaration type.
//
if (!check_decl_type (decl, decl_name, p, loc))
return;
if (tt != CPP_CLOSE_PAREN)
{
error ("%qs expected at the end of db pragma %qs", ")", pc);
return;
}
tt = pragma_lex (&t);
}
else
{
error ("data member name expected in db pragma %qs", pc);
return;
}
}
}
//
// The member qualifier can be omitted so we need to also handle all
// the member pragmas here.
//
else if (p == "id" ||
p == "auto" ||
p == "column" ||
p == "type" ||
p == "transient")
{
handle_pragma (p, 0, "");
return;
}
else
{
error ("unknown db pragma %qs", pc);
return;
}
// Record this pragma.
//
pragma prag (p, "", loc);
if (decl)
decl_pragmas_[decl].insert (prag);
else
{
tree scope (current_scope ());
if (!CLASS_TYPE_P (scope))
scope = global_namespace;
loc_pragmas_[scope].push_back (prag);
}
// See if there are any more pragmas.
//
if (tt == CPP_NAME)
{
handle_pragma (IDENTIFIER_POINTER (t), decl, decl_name);
}
else if (tt != CPP_EOF)
error ("unexpected text after %qs in db pragma", p.c_str ());
}
extern "C" void
handle_pragma_db_object (cpp_reader*)
{
handle_pragma_qualifier ("object");
}
extern "C" void
handle_pragma_db_value (cpp_reader*)
{
handle_pragma_qualifier ("value");
}
extern "C" void
handle_pragma_db_member (cpp_reader*)
{
handle_pragma_qualifier ("member");
}
extern "C" void
handle_pragma_db_id (cpp_reader*)
{
handle_pragma_qualifier ("id");
}
extern "C" void
handle_pragma_db_auto (cpp_reader*)
{
handle_pragma_qualifier ("auto");
}
extern "C" void
handle_pragma_db_column (cpp_reader*)
{
handle_pragma_qualifier ("column");
}
extern "C" void
handle_pragma_db_type (cpp_reader*)
{
handle_pragma_qualifier ("type");
}
extern "C" void
handle_pragma_db_transient (cpp_reader*)
{
handle_pragma_qualifier ("transient");
}
extern "C" void
register_odb_pragmas (void*, void*)
{
c_register_pragma_with_expansion ("db", "object", handle_pragma_db_object);
c_register_pragma_with_expansion ("db", "value", handle_pragma_db_value);
c_register_pragma_with_expansion ("db", "member", handle_pragma_db_member);
c_register_pragma_with_expansion ("db", "id", handle_pragma_db_id);
c_register_pragma_with_expansion ("db", "auto", handle_pragma_db_auto);
c_register_pragma_with_expansion ("db", "column", handle_pragma_db_column);
c_register_pragma_with_expansion ("db", "type", handle_pragma_db_type);
c_register_pragma_with_expansion ("db", "transient", handle_pragma_db_transient);
}
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