Fixed testem failure caused by rounding error

[libdai.git] / include / dai / exceptions.h

diff --git a/include/dai/exceptions.h b/include/dai/exceptions.h
index 2a5e8f4..6023df0 100644 (file)
--- a/include/dai/exceptions.h
+++ b/include/dai/exceptions.h
@@ -1,6 +1,7 @@
-/*  Copyright (C) 2006-2008  Joris Mooij  [j dot mooij at science dot ru dot nl]
-    Radboud University Nijmegen, The Netherlands
-    
+/*  Copyright (C) 2006-2008  Joris Mooij  [joris dot mooij at tuebingen dot mpg dot de]
+    Radboud University Nijmegen, The Netherlands /
+    Max Planck Institute for Biological Cybernetics, Germany
+
     This file is part of libDAI.
 
     libDAI is free software; you can redistribute it and/or modify
@@ -19,6 +20,11 @@
 */
 
 
+/// \file
+/// \brief Defines Exception class and the DAI_THROW macro
+/// \todo Improve documentation
+
+
 #ifndef __defined_libdai_exceptions_h
 #define __defined_libdai_exceptions_h
 
@@ -28,36 +34,69 @@
 #include <string>
 
 
+/// Used by DAI_THROW
 #define DAI_QUOTE(x) #x
+
+/// Used by DAI_THROW
 #define DAI_TOSTRING(x) DAI_QUOTE(x)
 
+/// Macro that simplifies throwing an exceptions with a useful error message
+/** \param cod Corresponds to one of the enum values in dai::Exception::codes
+ *
+ * Example:
+ *  \code
+ *  DAI_THROW(NOT_IMPLEMENTED);
+ *  \endcode
+ */
 #define DAI_THROW(cod) throw dai::Exception(dai::Exception::cod, std::string(__FILE__ ", line " DAI_TOSTRING(__LINE__)))
 
 
 namespace dai {
 
 
-    class Exception : public std::runtime_error {
-        public:
-            Exception(size_t code, const std::string& msg = "") : std::runtime_error(ErrorStrings[code] + " [" +  msg + "]") {}
-
-        enum {NOT_IMPLEMENTED,
-              UNKNOWN_DAI_ALGORITHM,
-              UNKNOWN_PROPERTY_TYPE,
-              MALFORMED_PROPERTY,
-              UNKNOWN_ENUM_VALUE,
-              CANNOT_READ_FILE,
-              CANNOT_WRITE_FILE,
-              INVALID_FACTORGRAPH_FILE,
-              NOT_ALL_PROPERTIES_SPECIFIED,
-              MULTIPLE_UNDO,
-              FACTORGRAPH_NOT_CONNECTED,
-              INTERNAL_ERROR,
-              NUM_ERRORS};  // NUM_ERRORS should be the last entry
-
-        private:
-            static std::string ErrorStrings[NUM_ERRORS];
-    };
+/// Represents an exception (based on std::runtime_error)
+class Exception : public std::runtime_error {
+    public:
+        /// Enumeration of exceptions used in libDAI
+        enum Code {NOT_IMPLEMENTED,
+                   UNKNOWN_DAI_ALGORITHM,
+                   UNKNOWN_PROPERTY_TYPE,
+                   MALFORMED_PROPERTY,
+                   UNKNOWN_ENUM_VALUE,
+                   CANNOT_READ_FILE,
+                   CANNOT_WRITE_FILE,
+                   INVALID_FACTORGRAPH_FILE,
+                   NOT_ALL_PROPERTIES_SPECIFIED,
+                   MULTIPLE_UNDO,
+                   FACTORGRAPH_NOT_CONNECTED,
+                   IMPOSSIBLE_TYPECAST,
+                   INTERNAL_ERROR,
+                   NOT_NORMALIZABLE,
+                   INVALID_EVIDENCE_FILE,
+                   INVALID_EVIDENCE_LINE,
+                   INVALID_EVIDENCE_OBSERVATION,
+                   INVALID_SHARED_PARAMETERS_ORDER,
+                   INVALID_SHARED_PARAMETERS_INPUT_LINE,
+                   UNKNOWN_PARAMETER_ESTIMATION_METHOD,
+                   NUM_ERRORS};  // NUM_ERRORS should be the last entry
+
+        /// Constructor
+        Exception( Code _code, const std::string& msg="" ) : std::runtime_error(ErrorStrings[_code] + " [" +  msg + "]"), errorcode(_code) {}
+
+        /// Copy constructor
+        Exception( const Exception &e ) : std::runtime_error(e), errorcode(e.errorcode) {}
+
+        /// Returns error code of this exception
+        Code code() const { return errorcode; }
+
+
+    private:
+        /// Contains the error code of this exception
+        Code errorcode;
+
+        /// Error messages corresponding to the exceptions enumerated above
+        static std::string ErrorStrings[NUM_ERRORS];
+};
 
 
 }