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https://github.com/boostorg/contract.git
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76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
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#include <boost/contract.hpp>
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#include <cassert>
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//[volatile
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class a {
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public:
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void invariant() const volatile; // Invariants cv qualified.
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void invariant() const; // Invariants const qualified.
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a() { // Check both cv and const invariant (at exit if no throw).
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boost::contract::guard c= boost::contract::constructor(this);
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}
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~a() { // Check both cv and const invariant (at entry).
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boost::contract::guard c = boost::contract::destructor(this);
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}
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void m() { // Check const invariant (at entry and exit if no throw).
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boost::contract::guard c = boost::contract::public_function(this);
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}
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void c() const { // Check const invariant (at entry and exit if no throw).
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boost::contract::guard c = boost::contract::public_function(this);
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}
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void v() volatile { // Check cv invariant (at entry and exit if no throw).
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boost::contract::guard c = boost::contract::public_function(this);
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}
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void cv() const volatile { // Check cv inv. (at entry and exit if no throw).
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boost::contract::guard c = boost::contract::public_function(this);
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}
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};
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//]
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bool cv_invariant_checked, const_invariant_checked;
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void a::invariant() const volatile { cv_invariant_checked = true; }
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void a::invariant() const { const_invariant_checked = true; }
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int main() {
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{
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cv_invariant_checked = const_invariant_checked = false;
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a x;
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assert(cv_invariant_checked);
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assert(const_invariant_checked);
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cv_invariant_checked = const_invariant_checked = false;
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x.m();
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assert(!cv_invariant_checked);
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assert(const_invariant_checked);
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cv_invariant_checked = const_invariant_checked = false;
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x.c();
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assert(!cv_invariant_checked);
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assert(const_invariant_checked);
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cv_invariant_checked = const_invariant_checked = false;
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x.v();
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assert(cv_invariant_checked);
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assert(!const_invariant_checked);
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cv_invariant_checked = const_invariant_checked = false;
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x.cv();
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assert(cv_invariant_checked);
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assert(!const_invariant_checked);
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cv_invariant_checked = const_invariant_checked = false;
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} // Call destructor.
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assert(cv_invariant_checked);
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assert(const_invariant_checked);
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return 0;
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}
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