#include <Message_Gravity.hxx>
#include <Message_SequenceOfPrinters.hxx>
-#include <Standard_Transient.hxx>
-#include <Standard_Boolean.hxx>
-#include <Standard_Integer.hxx>
-#include <Standard_Type.hxx>
-#include <Standard_CString.hxx>
+
#include <TCollection_HAsciiString.hxx>
#include <TCollection_HExtendedString.hxx>
//! customized by the application, and dispatches every received
//! message to all the printers.
//!
-//! For convenience, a number of operators << are defined with left
-//! argument being Handle(Message_Messenger); thus it can be used
-//! with syntax similar to C++ streams.
-//! Note that all these operators use trace level Warning.
+//! For convenience, a set of methods Send...() returning a string
+//! stream buffer is defined for use of stream-like syntax with operator <<
+//!
+//! Example:
+//! ~~~~~
+//! Messenger->SendFail() << " Unknown fail at line " << aLineNo << " in file " << aFile;
+//! ~~~~~
+//!
+//! The message is sent to messenger on destruction of the stream buffer,
+//! call to Flush(), or passing manipulator std::ends, std::endl, or std::flush.
+//! Empty messages are not sent except if manipulator is used.
class Message_Messenger : public Standard_Transient
{
DEFINE_STANDARD_RTTIEXT(Message_Messenger, Standard_Transient)
+public:
+ //! Auxiliary class wrapping std::stringstream thus allowing constructing
+ //! message via stream interface, and putting result into its creator
+ //! Message_Messenger within destructor.
+ //!
+ //! It is intended to be used either as temporary object or as local
+ //! variable, note that content will be lost if it is copied.
+ class StreamBuffer
+ {
+ public:
+
+ //! Destructor flushing constructed message.
+ ~StreamBuffer() { Flush(); }
+
+ //! Flush collected string to messenger
+ void Flush(Standard_Boolean doForce = Standard_False)
+ {
+ myStream.flush();
+ if (doForce || myStream.rdbuf()->in_avail() > 0)
+ {
+ myMessenger->Send (myStream.str().c_str(), myGravity);
+ myStream.str(std::string()); // empty the buffer for possible reuse
+ }
+ }
+
+ //! Formal copy constructor.
+ //!
+ //! Since buffer is intended for use as temporary object or local
+ //! variable, copy (or move) is needed only formally to be able to
+ //! return the new instance from relevant creation method.
+ //! In practice it should never be called because modern compilers
+ //! create such instances in place.
+ //! However note that if this constructor is called, the buffer
+ //! content (string) will not be copied (move is not supported for
+ //! std::stringstream class on old compilers such as gcc 4.4, msvc 9).
+ StreamBuffer (const StreamBuffer& theOther)
+ : myMessenger(theOther.myMessenger), myGravity(theOther.myGravity)
+ {
+ }
+
+ //! Wrapper for operator << of the stream
+ template <typename T>
+ StreamBuffer& operator << (const T& theArg)
+ {
+ myStream << theArg;
+ return *this;
+ }
+
+ //! Operator << for manipulators of ostream (ends, endl, flush),
+ //! flushes the buffer (sends the message)
+ StreamBuffer& operator << (std::ostream& (*)(std::ostream&))
+ {
+ Flush(Standard_True);
+ return *this;
+ }
+
+ //! Access to the stream object
+ Standard_SStream& Stream () { return myStream; }
+
+ private:
+ friend class Message_Messenger;
+
+ //! Main constructor creating temporary buffer.
+ //! Accessible only to Messenger class.
+ StreamBuffer (Message_Messenger* theMessenger, Message_Gravity theGravity)
+ : myMessenger (theMessenger),
+ myGravity (theGravity)
+ {}
+
+ private:
+ Message_Messenger* myMessenger; // don't make a Handle since this object should be created on stack
+ Message_Gravity myGravity;
+ Standard_SStream myStream;
+ };
+
public:
//! Empty constructor; initializes by single printer directed to std::cout.
//! The parameter putEndl specifies whether the new line should
//! be started after this message (default) or not (may have
//! sense in some conditions).
- Standard_EXPORT void Send (const Standard_CString theString, const Message_Gravity theGravity = Message_Warning, const Standard_Boolean putEndl = Standard_True) const;
+ Standard_EXPORT void Send (const Standard_CString theString,
+ const Message_Gravity theGravity = Message_Warning,
+ const Standard_Boolean putEndl = Standard_True) const;
//! See above
- Standard_EXPORT void Send (const TCollection_AsciiString& theString, const Message_Gravity theGravity = Message_Warning, const Standard_Boolean putEndl = Standard_True) const;
+ Standard_EXPORT void Send (const TCollection_AsciiString& theString,
+ const Message_Gravity theGravity = Message_Warning,
+ const Standard_Boolean putEndl = Standard_True) const;
//! See above
- Standard_EXPORT void Send (const TCollection_ExtendedString& theString, const Message_Gravity theGravity = Message_Warning, const Standard_Boolean putEndl = Standard_True) const;
+ Standard_EXPORT void Send (const TCollection_ExtendedString& theString,
+ const Message_Gravity theGravity = Message_Warning,
+ const Standard_Boolean putEndl = Standard_True) const;
+
+ //! Create string buffer for message of specified type
+ StreamBuffer Send (Message_Gravity theGravity) { return StreamBuffer (this, theGravity); }
+
+ //! Create string buffer for sending Fail message
+ StreamBuffer SendFail () { return Send (Message_Fail); }
+
+ //! Create string buffer for sending Alarm message
+ StreamBuffer SendAlarm () { return Send (Message_Alarm); }
+
+ //! Create string buffer for sending Warning message
+ StreamBuffer SendWarning () { return Send (Message_Warning); }
+
+ //! Create string buffer for sending Info message
+ StreamBuffer SendInfo () { return Send (Message_Info); }
+
+ //! Create string buffer for sending Trace message
+ StreamBuffer SendTrace () { return Send (Message_Trace); }
+
+ //! Short-cut to Send (theMessage, Message_Fail)
+ void SendFail (const TCollection_AsciiString& theMessage) { Send (theMessage, Message_Fail); }
+
+ //! Short-cut to Send (theMessage, Message_Alarm)
+ void SendAlarm (const TCollection_AsciiString& theMessage) { Send (theMessage, Message_Alarm); }
+
+ //! Short-cut to Send (theMessage, Message_Warning)
+ void SendWarning (const TCollection_AsciiString& theMessage) { Send (theMessage, Message_Warning); }
+
+ //! Short-cut to Send (theMessage, Message_Info)
+ void SendInfo (const TCollection_AsciiString& theMessage) { Send (theMessage, Message_Info); }
+
+ //! Short-cut to Send (theMessage, Message_Trace)
+ void SendTrace (const TCollection_AsciiString& theMessage) { Send (theMessage, Message_Trace); }
private:
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