std::nested_exception

 

C++

言語

コンセプト

ユーティリティライブラリ

ストリングスライブラリ

コンテナライブラリ

アルゴリズムライブラリ

イテレータライブラリ

ニューメリックスライブラリ

入力/出力ライブラリ

ローカライゼーションライブラリ

正規表現ライブラリ (C++11)

アトミック操作ライブラリ (C++11)

スレッドのサポートライブラリ (C++11)

 

ユーティリティライブラリ

型支援 (基本型、実行時型情報、型特性)

動的なメモリ管理

エラー処理

プログラムユーティリティ

可変個引数関数

日付と時刻

関数オブジェクト

initializer_list (C++11)

bitset

hash (C++11)

比較演算子

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

ペアとタプル

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

フォワード、スワップ、およびムーブ

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

エラー処理

例外処理 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)

例外処理の失敗 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 (廃止予定)

bad_exception

unexpected_handler (廃止予定)

get_unexpected (C++11)(廃止予定)

set_unexpected (廃止予定)

例外カテゴリ 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

エラーコード 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.

エラーコード

errno

アサーション 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

SYSTEM_ERROR施設 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;		(C++11およびそれ以降)

std::nested_exceptionsお互いの範囲内で任意の型の巣の例外にそれを可能にし、現在の例外をキャプチャし、格納することができるポリモーフィックmixinクラスです.

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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メンバ関数

(constructor)	nested_exceptionを構築します 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. (パブリックメンバ関数)
(destructor) [仮想]	ネストされた例外を破棄します 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. (仮想パブリックメンバ関数)
operator=	nested_exceptionの内容を置き換えます 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. (パブリックメンバ関数)
rethrow_nested	格納された例外をスローします 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. (パブリックメンバ関数)
nested_ptr	格納された例外へのポインタを取得します 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. (パブリックメンバ関数)

例

ネストされた例外オブジェクトを介して建設や再帰を示しています

Original:

Demonstrates construction and recursion through a nested exception object

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このコードを実行します

#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);
    }
}

出力:

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

も参照してください

exception_ptr (C++11)	例外オブジェクトを処理するための共有ポインタ型 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)