restore trunk

[supertux.git] / src / scripting / serialize.cpp

diff --git a/src/scripting/serialize.cpp b/src/scripting/serialize.cpp
new file mode 100644 (file)
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+++ b/src/scripting/serialize.cpp
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+//  $Id$
+//
+//  SuperTux
+//  Copyright (C) 2006 Matthias Braun <matze@braunis.de>
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; either version 2
+//  of the License, or (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+#include <config.h>
+
+#include "serialize.hpp"
+
+#include <memory>
+#include <assert.h>
+#include "lisp/lisp.hpp"
+#include "lisp/list_iterator.hpp"
+#include "lisp/parser.hpp"
+#include "lisp/writer.hpp"
+#include "squirrel_error.hpp"
+
+namespace Scripting
+{
+
+void load_squirrel_table(HSQUIRRELVM vm, SQInteger table_idx, const lisp::Lisp* lisp)
+{
+  using namespace lisp;
+
+  if(table_idx < 0)
+    table_idx -= 2;
+
+  lisp::ListIterator iter(lisp);
+  while(iter.next() && iter.lisp() != NULL) {
+    const std::string& token = iter.item();
+    sq_pushstring(vm, token.c_str(), token.size());
+
+    const lisp::Lisp* value = iter.value();
+    switch(value->get_type()) {
+      case Lisp::TYPE_CONS:
+        sq_newtable(vm);
+        load_squirrel_table(vm, sq_gettop(vm), iter.lisp());
+        break;
+      case Lisp::TYPE_INTEGER:
+        sq_pushinteger(vm, value->get_int());
+        break;
+      case Lisp::TYPE_REAL:
+        sq_pushfloat(vm, value->get_float());
+        break;
+      case Lisp::TYPE_STRING:
+        sq_pushstring(vm, value->get_string().c_str(), -1);
+        break;
+      case Lisp::TYPE_BOOLEAN:
+        sq_pushbool(vm, value->get_bool() ? SQTrue : SQFalse);
+        break;
+      case Lisp::TYPE_SYMBOL:
+        std::cerr << "Unexpected symbol in lisp file...";
+        sq_pushnull(vm);
+        break;
+      default:
+        assert(false);
+        break;
+    }
+
+    if(SQ_FAILED(sq_createslot(vm, table_idx)))
+      throw Scripting::SquirrelError(vm, "Couldn't create new index");
+  }
+}
+
+void save_squirrel_table(HSQUIRRELVM vm, SQInteger table_idx, lisp::Writer& writer)
+{
+  // offset because of sq_pushnull
+  if(table_idx < 0)
+    table_idx -= 1;
+
+  //iterator table
+  sq_pushnull(vm);
+  while(SQ_SUCCEEDED(sq_next(vm, table_idx))) {
+    if(sq_gettype(vm, -2) != OT_STRING) {
+      std::cerr << "Table contains non-string key\n";
+      continue;
+    }
+    const SQChar* key;
+    sq_getstring(vm, -2, &key);
+
+    switch(sq_gettype(vm, -1)) {
+      case OT_INTEGER: {
+        SQInteger val;
+        sq_getinteger(vm, -1, &val);
+        writer.write_int(key, static_cast<int> (val));
+        break;
+      }
+      case OT_FLOAT: {
+        SQFloat val;
+        sq_getfloat(vm, -1, &val);
+        writer.write_float(key, static_cast<float> (val));
+        break;
+      }
+      case OT_BOOL: {
+        SQBool val;
+        sq_getbool(vm, -1, &val);
+        writer.write_bool(key, val == SQTrue);
+        break;
+      }
+      case OT_STRING: {
+        const SQChar* str;
+        sq_getstring(vm, -1, &str);
+        writer.write_string(key, reinterpret_cast<const char*> (str));
+        break;
+      }
+      case OT_TABLE: {
+        writer.start_list(key, true);
+        save_squirrel_table(vm, -1, writer);
+        writer.end_list(key);
+        break;
+      }
+      case OT_CLOSURE:
+        break; // ignore
+      case OT_NATIVECLOSURE:
+        break;
+      default:
+        std::cerr << "Can't serialize key '" << key << "' in table.\n";
+        break;
+    }
+    sq_pop(vm, 2);
+  }
+  sq_pop(vm, 1);
+}
+
+}