move moses/src/* to moses/

1 files changed, 89 insertions, 0 deletions

diff --git a/moses/FilePtr.h b/moses/FilePtr.h
new file mode 100644
index 000000000..b9c835e59
--- /dev/null
+++ b/moses/FilePtr.h
@@ -0,0 +1,89 @@
+// $Id$
+
+/* ---------------------------------------------------------------- */
+/* Copyright 2005 (c) by RWTH Aachen - Lehrstuhl fuer Informatik VI */
+/* Richard Zens                                                     */
+/* ---------------------------------------------------------------- */
+
+#ifndef moses_FilePtr_h
+#define moses_FilePtr_h
+
+#include "File.h"
+
+namespace Moses
+{
+
+/** smart pointer for on-demand loading from file
+ *  requirement: T has a constructor T(FILE*)
+ */
+template<typename T> class FilePtr
+{
+public:
+  typedef T* Ptr;
+private:
+  FILE* f;
+  OFF_T pos;
+  mutable Ptr t;
+public:
+  FilePtr(FILE* f_=0,OFF_T p=0) : f(f_),pos(p),t(0) {}
+  ~FilePtr() {}
+
+  void set(FILE* f_,OFF_T p) {
+    f=f_;
+    pos=p;
+  }
+  void free() {
+    delete t;
+    t=0;
+  }
+
+  T& operator* () {
+    load();
+    return *t;
+  }
+  Ptr operator->() {
+    load();
+    return t;
+  }
+  operator Ptr () {
+    load();
+    return t;
+  }
+
+  const T& operator* () const {
+    load();
+    return *t;
+  }
+  Ptr operator->() const {
+    load();
+    return t;
+  }
+  operator Ptr  () const {
+    load();
+    return t;
+  }
+
+  // direct access to pointer, use with care!
+  Ptr getPtr() {
+    return t;
+  }
+  Ptr getPtr() const {
+    return t;
+  }
+
+  operator bool() const {
+    return (f && pos!=InvalidOffT);
+  }
+
+  void load() const {
+    if(t) return;
+    if(f && pos!=InvalidOffT) {
+      fSeek(f,pos);
+      t=new T(f);
+    }
+  }
+};
+
+}
+
+#endif