Espacios de nombres
Variantes
Acciones

std::nested_exception

De cppreference.com
< cpp‎ | error

 
 
Utilidades de la biblioteca
Escriba apoyo (basic types, RTTI, type traits)
Gestión de memoria dinámica
Gestión de errores
Programa de servicios públicos
Funciones variadic
Fecha y hora
Objetos Function
initializer_list(C++11)
bitset
hash(C++11)
Operadores relacionales
Original:
Relational operators
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
rel_ops::operator!=
rel_ops::operator>
rel_ops::operator<=
rel_ops::operator>=
Pares y tuplas
Original:
Pairs and tuples
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
pair
tuple(C++11)
piecewise_construct_t(C++11)
piecewise_construct(C++11)
Cambiar, hacia adelante y mover
Original:
Swap, forward and move
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
swap
forward(C++11)
move(C++11)
move_if_noexcept(C++11)
declval(C++11)
 
Gestión de errores
Manejo de excepciones
Original:
Exception handling
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
exception
uncaught_exception
exception_ptr(C++11)
make_exception_ptr(C++11)
current_exception(C++11)
rethrow_exception(C++11)
nested_exception(C++11)
throw_with_nested(C++11)
rethrow_if_nested(C++11)
Fallas de control de excepciones
Original:
Exception handling failures
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
terminate
terminate_handler
get_terminate(C++11)
set_terminate
unexpected(obsoleto)
bad_exception
unexpected_handler(obsoleto)
get_unexpected(C++11)(obsoleto)
set_unexpected(obsoleto)
Categorías excepción
Original:
Exception categories
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
logic_error
invalid_argument
domain_error
length_error
out_of_range
runtime_error
range_error
overflow_error
underflow_error
Los códigos de error
Original:
Error codes
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
Los códigos de error
errno
Las afirmaciones
Original:
Assertions
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
assert
instalación SYSTEM_ERROR
Original:
system_error facility
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.
error_category(C++11)
generic_category(C++11)
system_category(C++11)
error_condition(C++11)
errc(C++11)
error_code(C++11)
system_error(C++11)
 
Defined in header <exception>
class nested_exception;
(desde C++11)
std::nested_exceptions es una clase mixin polimórfico que puede capturar y almacenar la excepción actual, por lo que es posible con las excepciones nido de tipos arbitrarios dentro de cada otro .
Original:
std::nested_exceptions is a polymorphic mixin class which can capture and store the current exception, making it possible to nest exceptions of arbitrary types within each other.
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

[editar] Las funciones miembro

construye una nested_exception
Original:
constructs a nested_exception
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro público función)
[virtual]
destructs una excepción anidada
Original:
destructs a nested exception
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(Virtual Member público función)
sustituye el contenido de un nested_exception
Original:
replaces the contents of a nested_exception
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro público función)
produce la excepción almacenado
Original:
throws the stored exception
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro público función)
obtiene un puntero a la excepción almacenado
Original:
obtains a pointer to the stored exception
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(miembro público función)

[editar] Ejemplo

[edit]

Demuestra la construcción y la recursividad a través de un objeto de excepción anidada
Original:
Demonstrates construction and recursion through a nested exception object
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

#include <iostream>
#include <stdexcept>
#include <exception>
#include <string>
#include <fstream>
 
// prints the explanatory string of an exception. If the exception is nested,
// recurses to print the explanatory of the exception it holds
void print_exception(const std::exception& e, int level =  0)
{
    std::cerr << std::string(level, ' ') << "exception: " << e.what() << '\n';
    try {
        std::rethrow_if_nested(e);
    } catch(const std::exception& e) {
        print_exception(e, level+1);
    } catch(...) {}
}
 
// sample function that catches an exception and wraps it in a nested exception
void open_file(const std::string& s)
{
    try {
        std::ifstream file(s);
        file.exceptions(std::ios_base::failbit);
    } catch(...) {
        std::throw_with_nested( std::runtime_error("Couldn't open " + s) );
    }
}
 
// sample function that catches an exception and wraps it in a nested exception
void run()
{
    try {
        open_file("nonexistent.file");
    } catch(...) {
        std::throw_with_nested( std::runtime_error("run() failed") );
    }
}
 
// runs the sample function above and prints the caught exception
int main()
{
    try {
        run();
    } catch(const std::exception& e) {
        print_exception(e);
    }
}

Output:

exception: run() failed
 exception: Couldn't open nonexistent.file
  exception: basic_ios::clear

[editar] Ver también

puntero compartido tipo para la manipulación de objetos de excepción
Original:
shared pointer type for handling exception objects
The text has been machine-translated via Google Translate.
You can help to correct and verify the translation. Click here for instructions.

(typedef) [edit]