ErrorStack Class Reference

Implements a stack of error messages to provide a pretty formatted error traceback. More...

#include <errorstack.hh>

Collaboration diagram for ErrorStack:

Classes
class	Message
	Represents a single error message. More...
class	MessageStream
	A helper class to assemble error messages as streams. More...
class	Stack
	The actual error message stack. More...

Public Member Functions
	ErrorStack () noexcept
	Default constructor.
	ErrorStack (const ErrorStack &other)
	Copy constructor.
	~ErrorStack ()
	Destructor.
ErrorStack &	operator= (const ErrorStack &other)
	Copy assignment.
bool	isEmpty () const
	Returns true, if the stack is empty.
unsigned	count () const
	Returns the number of elements on the stack.
const Message &	message (unsigned i) const
	Returns the i-th message from the stack.
void	push (const Message &msg) const
	Pushes a message on the stack.
void	take (const ErrorStack &other) const
	Takes all messages from the other stack.
QString	format (const QString &indent=" ") const
	Returns a formatted string of error messages.

Protected Attributes
Stack *	_stack
	A reference to the actual message stack.

Detailed Description

Implements a stack of error messages to provide a pretty formatted error traceback.

This class is intended to be used like:

class MyClass: public ErrorStack
{
 
// [...]
 
  bool someMethod(const ErrorStack &err=ErrorStack()) {
    // [...]
    if (someError) {
      errMsg() << "Some error happened!";
      return false;
    }
    // [...]
  }
 
// [...]
}

The error message can then be obtained using the public methods. E.g.,

// [...]
MyClass instance;
ErrorStack err;
 
if (! instance.someMethod(err)) {
  QString msg = err.formatErrorMessages();
  // []
}

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The documentation for this class was generated from the following files:

• /home/hannes/Software/qdmr/lib/errorstack.hh
• /home/hannes/Software/qdmr/lib/errorstack.cc