+#include <msp/core/raii.h>
#include <msp/strings/format.h>
#include "dataerror.h"
#include "loader.h"
namespace {
-template<typename T>
-struct Set
-{
- T &ref;
- T orig;
-
- Set(T &r, const T &v): ref(r), orig(r) { r = v; }
- ~Set() { ref = orig; }
-};
-
bool signature_match(char s, char a)
{
if(s==a)
void Loader::load_statement(const Statement &st)
{
- Set<const Statement *> set_cst(cur_st, &st);
+ SetForScope<const Statement *> set_cst(cur_st, &st);
try
{
- LoaderAction *act = find_action(ActionKey(st.keyword, st.get_signature()));
+ StatementKey key(st.keyword, st.get_signature());
+
+ if(!aux_loaders.empty() && !has_action(key))
+ {
+ for(list<Loader *>::const_iterator i=aux_loaders.begin(); i!=aux_loaders.end(); ++i)
+ if((*i)->has_action(key))
+ return (*i)->load_statement(st);
+ }
+
+ LoaderAction *act = find_action(key);
if(act)
{
sub_loaded = false;
void Loader::add(const string &kwd, LoaderAction *act)
{
- ActionKey key(kwd, (act ? act->get_signature() : "*"));
+ StatementKey key(kwd, (act ? act->get_signature() : "*"));
ActionMap::iterator i = actions.find(key);
if(i!=actions.end())
{
actions[key] = act;
}
-LoaderAction *Loader::find_action(const ActionKey &key) const
+void Loader::add_auxiliary_loader(Loader &ldr)
+{
+ aux_loaders.push_back(&ldr);
+}
+
+bool Loader::has_action(const StatementKey &key) const
{
- ActionMap::const_iterator begin = actions.lower_bound(ActionKey(key.keyword, string()));
- ActionMap::const_iterator end = actions.upper_bound(ActionKey(key.keyword, "~"));
+ ActionMap::const_iterator i = actions.lower_bound(StatementKey(key.keyword, string()));
+ for(; (i!=actions.end() && i->first.keyword==key.keyword); ++i)
+ if(signature_match(key.signature, i->first.signature))
+ return true;
+ return false;
+}
+
+LoaderAction *Loader::find_action(const StatementKey &key) const
+{
+ ActionMap::const_iterator begin = actions.lower_bound(StatementKey(key.keyword, string()));
+ ActionMap::const_iterator end = actions.upper_bound(StatementKey(key.keyword, "~"));
if(begin==end)
throw unknown_keyword(key.keyword);
return cur_st->source;
}
-
-Loader::ActionKey::ActionKey(const string &k, const string &s):
- keyword(k),
- signature(s)
-{ }
-
-bool Loader::ActionKey::operator<(const ActionKey &other) const
-{
- if(keyword!=other.keyword)
- return keyword<other.keyword;
- return signature<other.signature;
-}
-
} // namespace DataFile
} // namespace Msp