xtd::source_location Class Reference

Inheritance diagram for xtd::source_location:

Definition

The xtd::source_location class represents certain information about the source code, such as file names, line numbers, and function names. Previously, functions that desire to obtain this information about the call site (for logging, testing, or debugging purposes) must use macros so that predefined macros like __LINE__ and __FILE__ are expanded in the context of the caller. The xtd::source_location class provides a better alternative.

class core_export_ source_location : public xtd::object

Inheritance

xtd::object → xtd::source_location

Header

#include <xtd/source_location>

Namespace

xtd

Library

xtd.core

Remarks

The xtd::source_location is used by xtd::diagnostics::stack_frame and xtd::diagnostics::stack_trace.

The xtd::source_location is same as std::source_location.

Public Constructors
	source_location ()
	Initializes a new instance of the xtd::source_location class.

Public Properties
xtd::size	column () const noexcept
	Gets the column number represented by this object.
const xtd::string &	file_name () const noexcept
	Gets the name of the current source file represented by this object, represented as a null-terminated byte string.
const xtd::string &	function_name () const noexcept
	Gets the name of the function associated with the position represented by this object, if any.
xtd::size	line () const noexcept
	Gets the line number represented by this object.

Public Methods
xtd::string	to_string () const noexcept override
	Returns a xtd::string that represents the current object.

Public Static Methods
static source_location	current (const __xtd_source_location__ &value=__xtd_source_location__::current()) noexcept
	Crates a new xtd::source_location object corresponding to the location of the call site.

Additional Inherited Members
Public Member Functions inherited from xtd::object
	object ()=default
	Create a new instance of the ultimate base class object.
virtual bool	equals (const object &obj) const noexcept
	Determines whether the specified object is equal to the current object.
virtual size_t	get_hash_code () const noexcept
	Serves as a hash function for a particular type.
virtual type_object	get_type () const noexcept
	Gets the type of the current instance.
template<typename object_t >
xtd::uptr< object_t >	memberwise_clone () const
	Creates a shallow copy of the current object.
Static Public Member Functions inherited from xtd::object
template<typename object_a_t , typename object_b_t >
static bool	equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are considered equal.
template<typename object_a_t , typename object_b_t >
static bool	reference_equals (const object_a_t &object_a, const object_b_t &object_b) noexcept
	Determines whether the specified object instances are the same instance.

Constructor & Destructor Documentation

source_location()

xtd::source_location::source_location

(

)

Initializes a new instance of the xtd::source_location class.

Member Function Documentation

column()

xtd::size xtd::source_location::column ( ) const

noexcept

Gets the column number represented by this object.

Returns

The column number represented by this object.

Remarks

Returns 0 when the column number is unknown.

file_name()

const xtd::string & xtd::source_location::file_name ( ) const

noexcept

Gets the name of the current source file represented by this object, represented as a null-terminated byte string.

Returns

The name of the current source file represented by this object.

Remarks

Returns xtd::string::empty_string ("") when the source file is unknown.

function_name()

const xtd::string & xtd::source_location::function_name ( ) const

noexcept

Gets the name of the function associated with the position represented by this object, if any.

Returns

If this object represents a position in a body of a function, returns a string corresponding to the name of the function; otherwise, an xtd::string::empty_string ("") is returned.

line()

xtd::size xtd::source_location::line ( ) const

noexcept

Gets the line number represented by this object.

Returns

The line number represented by this object.

Remarks

Returns 0 when the line number is unknown.

to_string()

xtd::string xtd::source_location::to_string ( ) const

overridevirtualnoexcept

Returns a xtd::string that represents the current object.

Returns

A string that represents the current object.

Examples

The following code example demonstrates what to_string returns.

#include <xtd/xtd>
 
using namespace xtd;
 
namespace examples {
  namespace object_test {
    class object1 : public object {
    };
  }
}
 
auto main() -> int {
  ptr<object> obj1 = new_ptr<examples::object_test::object1>();
  console::write_line(obj1->to_string());
 
  ptr<object> obj2 = new_ptr<date_time>(1971, 1, 5, 23, 5, 0);
  console::write_line(obj2->to_string());
 
  ptr<object> obj3 = new_ptr<boolean_object>();
  console::write_line(obj3->to_string());
}
 
// This code produces the following output :
//
// examples::object_test::object1
// Tue Jan  5 23:05:00 1971
// false

Reimplemented from xtd::object.

current()

static source_location xtd::source_location::current ( const __xtd_source_location__ &  value = __xtd_source_location__::current() )

staticnoexcept

Crates a new xtd::source_location object corresponding to the location of the call site.

Returns

The currentsouce location informations.

Remarks

If xtd::source_location::current is invoked directly (via a function call that names xtd::source_location::current), it returns a source_location object with implementation-defined values representing the location of the call. The values should be affected by the #line preprocessor directive in the same manner as the predefined macros __LINE__ and __FILE__.

If xtd::source_location::current is used in a default member initializer, the return value corresponds to the location of the constructor definition or aggregate initialization that initializes the data member.

If xtd::source_location::current is used in a default argument, the return value corresponds to the location of the call to xtd::source_location::current at the call site.

If xtd::source_location::current is invoked in any other manner, the return value is unspecified.

Note

xtd::source_location::current typically requires compiler's built-in implementation.

---

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

• xtd.core/include/xtd/source_location.h