eo/src/eoPersistent.h

@@ -0,0 +1,53 @@
+// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
+
+//-----------------------------------------------------------------------------
+// eoPersistent.h
+// (c) GeNeura Team, 1999
+//-----------------------------------------------------------------------------
+
+#ifndef EOPERSISTENT_H
+#define EOPERSISTENT_H
+
+/// @name variables Some definitions of variables used throughout the program
+//@{
+/// max length to store stuff read
+const unsigned MAXLINELENGTH=1024;
+//@}
+
+//-----------------------------------------------------------------------------
+
+#include <iostream>  // istream, ostream
+#include <string> // para string
+
+//-----------------------------------------------------------------------------
+#include <eoPrintable.h>
+
+using namespace std;
+
+//-----------------------------------------------------------------------------
+// eoPersistent
+//-----------------------------------------------------------------------------
+/**
+An persistent object that knows how to write (through functions inherited from
+#eoPrintable#) and read itself
+ */
+class eoPersistent: public eoPrintable
+{
+ public:
+  /// Virtual dtor. They are needed in virtual class hierarchies.
+  virtual ~eoPersistent() {}
+  
+  /**
+   * Read object.
+   * @param _is A istream.
+   * @throw runtime_exception If a valid object can't be read.
+   */
+  virtual void readFrom(istream& _is) = 0;
+  
+};
+
+//-----------------------------------------------------------------------------
+///Standard input for all objects in the EO hierarchy
+istream & operator >> ( istream& _is, eoPersistent& _o );
+
+#endif EOOBJECT_H