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The CICA Windows Explosion!
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CLEANUP.CPP
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1995-02-23
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// File from page 697 in "Thinking in C++" by Bruce Eckel
//////////////////////////////////////////////////
// From the compressed package ECKELT01.ZIP 2/21/95
// Copyright (c) Bruce Eckel, 1995
// Source code file from the book "Thinking in C++",
// Prentice Hall, 1995, ISBN: 0-13-917709-4
// All rights reserved EXCEPT as allowed by the following
// statements: You may freely use this file for your own
// work, including modifications and distribution in
// executable form only. You may copy and distribute this
// file, as long as it is only distributed in the complete
// (compressed) package with the other files from this
// book and you do not remove this copyright and notice.
// You may not distribute modified versions of the source
// code in this package. This package may be freely placed
// on bulletin boards, internet nodes, shareware disks and
// product vendor disks. You may not use this file in
// printed media without the express permission of the
// author. Bruce Eckel makes no
// representation about the suitability of this software
// for any purpose. It is provided "as is" without express
// or implied warranty of any kind. The entire risk as to
// the quality and performance of the software is with
// you. Should the software prove defective, you assume
// the cost of all necessary servicing, repair, or
// correction.
// If you think you've found an error, please
// email all modified files with loudly commented changes
// to: eckel@aol.com (please use the same
// address for non-code errors found in the book).
//////////////////////////////////////////////////
//: CLEANUP.CPP -- Exceptions clean up objects
#include <fstream.h>
#include <except.h>
#include <string.h>
ofstream out("cleanup.out");
class noisy {
static int i;
int objnum;
enum { sz = 40 };
char name[sz];
public:
noisy(const char* nm="array elem") throw(int){
objnum = i++;
memset(name, 0, sz);
strncpy(name, nm, sz - 1);
out << "constructing noisy " << objnum
<< " name [" << name << "]" << endl;
if(objnum == 5) throw int(5);
// Not in exception specification:
if(*nm == 'z') throw char('z');
}
~noisy() {
out << "destructing noisy " << objnum
<< " name [" << name << "]" << endl;
}
void* operator new[](size_t sz) {
out << "noisy::new[]" << endl;
return ::new char[sz];
}
void operator delete[](void* p) {
out << "noisy::delete[]" << endl;
::delete []p;
}
};
int noisy::i = 0;
void unexpected_rethrow() {
out << "inside unexpected_rethrow()" << endl;
throw; // Rethrow same exception
}
main() {
set_unexpected(unexpected_rethrow);
try {
noisy n1("before array");
// Throws exception:
noisy* array = new noisy[7];
noisy n2("after array");
} catch(int i) {
out << "caught " << i << endl;
}
out << "testing unexpected:" << endl;
try {
noisy n3("before unexpected");
noisy n4("z");
noisy n5("after unexpected");
} catch(char c) {
out << "caught " << c << endl;
}
}