std::nested_exception

 

C++

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initializer_list (C++11)

bitset

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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

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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

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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

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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

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length_error

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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)

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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.

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Las funciones miembro

(constructor)	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)
(destructor) [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)
operator=	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)
rethrow_nested	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)
nested_ptr	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)

Ejemplo

Demuestra la construcción y la recursividad a través de un objeto de excepción anidada

Original:

Demonstrates construction and recursion through a nested exception object

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#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

Ver también

exception_ptr (C++11)	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)