ENH: Adding a deprecation mechanism to gdcm via two MACRO and two config options

[gdcm.git] / src / gdcmDebug.h

diff --git a/src/gdcmDebug.h b/src/gdcmDebug.h
index 35e159506d636b4b451cb2ea85c14e0bfbf9dcaa..85eda8b3cae08ec08fdc3d24982d99946ff3af16 100644 (file)
--- a/src/gdcmDebug.h
+++ b/src/gdcmDebug.h
@@ -3,8 +3,8 @@
   Program:   gdcm
   Module:    $RCSfile: gdcmDebug.h,v $
   Language:  C++
-  Date:      $Date: 2005/02/11 20:14:55 $
-  Version:   $Revision: 1.33 $
+  Date:      $Date: 2005/07/19 14:43:48 $
+  Version:   $Revision: 1.36 $
                                                                                 
   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
   l'Image). All rights reserved. See Doc/License.txt or
@@ -36,6 +36,9 @@ namespace gdcm
  *  - error : for bad library use, seriously wrong DICOM
  *  - debug : for information/debug messages
  *  - warning : for warning about DICOM quality (kosher)
+ *  - assert : design by contract implementation. A function should have 
+ *             proper input and proper output. 
+ *             (should not happen, not user controlled)
  * 
  * A debugging message is only show if the flag is on (DebugFlag)
  * This is static var and can be set at beginning of code:
@@ -99,7 +102,7 @@ public:
  * @param msg message part
  */
 #ifdef NDEBUG
-#define gdcmDebugMacro(msg)
+#define gdcmDebugMacro(msg) {}
 #else
 #define gdcmDebugMacro(msg)                                 \
 {                                                           \
@@ -123,7 +126,7 @@ public:
  * @param msg message part
  */
 #ifdef NDEBUG
-#define gdcmWarningMacro(msg)
+#define gdcmWarningMacro(msg) {}
 #else
 #define gdcmWarningMacro(msg)                               \
 {                                                           \
@@ -146,7 +149,7 @@ public:
  * @param msg second message part 
  */
 #ifdef NDEBUG
-#define gdcmErrorMacro(msg)
+#define gdcmErrorMacro(msg) {}
 #else
 #define gdcmErrorMacro(msg)                                 \
 {                                                           \
@@ -168,7 +171,7 @@ public:
  *        gdcmAssertMacro( "my message" && 2 < 3 )
  */
 #ifdef NDEBUG
-#define gdcmAssertMacro(arg)
+#define gdcmAssertMacro(arg) {}
 #else
 #define gdcmAssertMacro(arg)                                \
 {                                                           \
@@ -187,4 +190,52 @@ public:
 }
 #endif //NDEBUG
 
+//-----------------------------------------------------------------------------
+//
+// Define GDCM_LEGACY macro to mark legacy methods where they are
+// declared in their class.  Example usage:
+//
+//   // @deprecated Replaced by MyOtherMethod() as of gdcm 2.0.
+//   GDCM_LEGACY(void MyMethod());
+#if defined(GDCM_LEGACY_REMOVE)
+  // Remove legacy methods completely.
+# define GDCM_LEGACY(method)
+#elif defined(GDCM_LEGACY_SILENT)
+  // Provide legacy methods with no warnings.
+# define GDCM_LEGACY(method) method
+#else
+  // Setup compile-time warnings for uses of deprecated methods if
+  // possible on this compiler.
+# if defined(__GNUC__) && !defined(__INTEL_COMPILER) && (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
+#  define GDCM_LEGACY(method) method __attribute__((deprecated))
+# elif defined(_MSC_VER) && _MSC_VER >= 1300
+#  define GDCM_LEGACY(method) __declspec(deprecated) method
+# else
+#  define GDCM_LEGACY(method) method
+# endif
+#endif
+
+// Macros to create runtime deprecation warning messages in function
+// bodies.  Example usage:
+//
+//   void MyClass::MyOldMethod()
+//   {
+//     GDCM_LEGACY_BODY(MyClass::MyOldMethod, 2.0);
+//   }
+//
+//   void MyClass::MyMethod()
+//   {
+//     GDCM_LEGACY_REPLACED_BODY(MyClass::MyMethod, 5.0,
+//                               MyClass::MyOtherMethod);
+//   }
+#if defined(GDCM_LEGACY_REMOVE) || defined(GDCM_LEGACY_SILENT)
+# define GDCM_LEGACY_BODY(method, version)
+# define GDCM_LEGACY_REPLACED_BODY(method, version, replace)
+#else
+# define GDCM_LEGACY_BODY(method, version) \
+  gdcmWarningMacro(#method " was deprecated for gdcm" #version " and will be removed in a future version.")
+# define GDCM_LEGACY_REPLACED_BODY(method, version, replace) \
+  gdcmWarningMacro(#method " was deprecated for gdcm" #version " and will be removed in a future version.  Use " #replace " instead.")
+#endif
+
 #endif