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License for more information.</span> <span class="hl com">============================================================================*/</span> <span class="hl ppc">#ifndef CM_AUTO_PTR_HXX</span> <span class="hl ppc">#define CM_AUTO_PTR_HXX</span> <span class="hl ppc">#include <cmsys/Configure.hxx></span> <span class="hl slc">// FIXME: Use std::auto_ptr on compilers that do not warn about it.</span> <span class="hl ppc">#define CM_AUTO_PTR cm::auto_ptr</span> <span class="hl slc">// The HP compiler cannot handle the conversions necessary to use</span> <span class="hl slc">// auto_ptr_ref to pass an auto_ptr returned from one function</span> <span class="hl slc">// directly to another function as in use_auto_ptr(get_auto_ptr()).</span> <span class="hl slc">// We instead use const_cast to achieve the syntax on those platforms.</span> <span class="hl slc">// We do not use const_cast on other platforms to maintain the C++</span> <span class="hl slc">// standard design and guarantee that if an auto_ptr is bound</span> <span class="hl slc">// to a reference-to-const then ownership will be maintained.</span> <span class="hl ppc">#if defined(__HP_aCC)</span> <span class="hl ppc">#define cm_AUTO_PTR_REF 0</span> <span class="hl ppc">#define cm_AUTO_PTR_CONST const</span> <span class="hl ppc">#define cm_AUTO_PTR_CAST(a) cast(a)</span> <span class="hl ppc">#else</span> <span class="hl ppc">#define cm_AUTO_PTR_REF 1</span> <span class="hl ppc">#define cm_AUTO_PTR_CONST</span> <span class="hl ppc">#define cm_AUTO_PTR_CAST(a) a</span> <span class="hl ppc">#endif</span> <span class="hl slc">// In C++11, clang will warn about using dynamic exception specifications</span> <span class="hl slc">// as they are deprecated. But as this class is trying to faithfully</span> <span class="hl slc">// mimic std::auto_ptr, we want to keep the 'throw()' decorations below.</span> <span class="hl slc">// So we suppress the warning.</span> <span class="hl ppc">#if defined(__clang__) && defined(__has_warning)</span> <span class="hl ppc">#if __has_warning(</span><span class="hl pps">"-Wdeprecated"</span><span class="hl ppc">)</span> <span class="hl ppc">#pragma clang diagnostic push</span> <span class="hl ppc">#pragma clang diagnostic ignored</span> <span class="hl pps">"-Wdeprecated"</span><span class="hl ppc"></span> <span class="hl ppc">#endif</span> <span class="hl ppc">#endif</span> <span class="hl kwa">namespace</span> cm <span class="hl opt">{</span> <span class="hl kwc">template</span> <span class="hl opt"><</span><span class="hl kwc">class</span> X<span class="hl opt">></span> <span class="hl kwc">class</span> auto_ptr<span class="hl opt">;</span> <span class="hl ppc">#if cm_AUTO_PTR_REF</span> <span class="hl kwa">namespace</span> detail <span class="hl opt">{</span> <span class="hl slc">// The auto_ptr_ref template is supposed to be a private member of</span> <span class="hl slc">// auto_ptr but Borland 5.8 cannot handle it. Instead put it in</span> <span class="hl slc">// a private namespace.</span> <span class="hl kwc">template</span> <span class="hl opt"><</span><span class="hl kwc">class</span> Y<span class="hl opt">></span> <span class="hl kwb">struct</span> auto_ptr_ref <span class="hl opt">{</span> Y<span class="hl opt">*</span> p_<span class="hl opt">;</span> <span class="hl slc">// The extra constructor argument prevents implicit conversion to</span> <span class="hl slc">// auto_ptr_ref from auto_ptr through the constructor. Normally</span> <span class="hl slc">// this should be done with the explicit keyword but Borland 5.x</span> <span class="hl slc">// generates code in the conversion operator to call itself</span> <span class="hl slc">// infinately.</span> <span class="hl kwd">auto_ptr_ref</span><span class="hl opt">(</span>Y<span class="hl opt">*</span> p<span class="hl opt">,</span> <span class="hl kwb">int</span><span class="hl opt">)</span> <span class="hl opt">:</span> <span class="hl kwd">p_</span><span class="hl opt">(</span>p<span class="hl opt">)</span> <span class="hl opt">{</span> <span class="hl opt">}</span> <span class="hl opt">};</span> <span class="hl opt">}</span> <span class="hl ppc">#endif</span> <span class="hl com">/** C++98 Standard Section 20.4.5 - Template class auto_ptr. */</span> <span class="hl kwc">template</span> <span class="hl opt"><</span><span class="hl kwc">class</span> X<span class="hl opt">></span> <span class="hl kwc">class</span> auto_ptr <span class="hl opt">{</span> <span class="hl ppc">#if !cm_AUTO_PTR_REF</span> <span class="hl kwc">template</span> <span class="hl opt"><</span>typename Y<span class="hl opt">></span> <span class="hl kwb">static</span> <span class="hl kwc">inline</span> auto_ptr<span class="hl opt"><</span>Y<span class="hl opt">>&</span> <span class="hl kwd">cast</span><span class="hl opt">(</span>auto_ptr<span class="hl opt"><</span>Y<span class="hl opt">></span> <span class="hl kwb">const</span><span class="hl opt">&</span> a<span class="hl opt">)</span> <span class="hl opt">{</span> <span class="hl kwa">return const_cast</span><span class="hl opt"><</span>auto_ptr<span class="hl opt"><</span>Y<span class="hl opt">>&>(</span>a<span class="hl opt">);</span> <span class="hl opt">}</span> <span class="hl ppc">#endif</span> <span class="hl com">/** The pointer to the object held. */</span> X<span class="hl opt">*</span> x_<span class="hl opt">;</span> <span class="hl kwc">public</span><span class="hl opt">:</span> <span class="hl com">/** The type of object held by the auto_ptr. */</span> <span class="hl kwc">typedef</span> X element_type<span class="hl opt">;</span> <span class="hl com">/** Construct from an auto_ptr holding a compatible object. This</span> <span class="hl com"> transfers ownership to the newly constructed auto_ptr. */</span> <span class="hl kwc">template</span> <span class="hl opt"><</span><span class="hl kwc">class</span> Y<span class="hl opt">></span> <span class="hl kwd">auto_ptr</span><span class="hl opt">(</span>auto_ptr<span class="hl opt"><</span>Y<span class="hl opt">></span> cm_AUTO_PTR_CONST<span class="hl opt">&</span> a<span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">:</span> <span class="hl kwd">x_</span><span class="hl opt">(</span><span class="hl kwd">cm_AUTO_PTR_CAST</span><span class="hl opt">(</span>a<span class="hl opt">).</span><span class="hl kwd">release</span><span class="hl opt">())</span> <span class="hl opt">{</span> <span class="hl opt">}</span> <span class="hl com">/** Assign from an auto_ptr holding a compatible object. This</span> <span class="hl com"> transfers ownership to the left-hand-side of the assignment. */</span> <span class="hl kwc">template</span> <span class="hl opt"><</span><span class="hl kwc">class</span> Y<span class="hl opt">></span> auto_ptr<span class="hl opt">&</span> <span class="hl kwc">operator</span><span class="hl opt">=(</span>auto_ptr<span class="hl opt"><</span>Y<span class="hl opt">></span> cm_AUTO_PTR_CONST<span class="hl opt">&</span> a<span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> <span class="hl kwa">this</span><span class="hl opt">-></span><span class="hl kwd">reset</span><span class="hl opt">(</span><span class="hl kwd">cm_AUTO_PTR_CAST</span><span class="hl opt">(</span>a<span class="hl opt">).</span><span class="hl kwd">release</span><span class="hl opt">());</span> <span class="hl kwa">return</span> <span class="hl opt">*</span><span class="hl kwa">this</span><span class="hl opt">;</span> <span class="hl opt">}</span> <span class="hl com">/**</span> <span class="hl com"> * Explicitly construct from a raw pointer. This is typically</span> <span class="hl com"> * called with the result of operator new. For example:</span> <span class="hl com"> *</span> <span class="hl com"> * auto_ptr<X> ptr(new X());</span> <span class="hl com"> */</span> <span class="hl kwc">explicit</span> <span class="hl kwd">auto_ptr</span><span class="hl opt">(</span>X<span class="hl opt">*</span> p <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">:</span> <span class="hl kwd">x_</span><span class="hl opt">(</span>p<span class="hl opt">)</span> <span class="hl opt">{</span> <span class="hl opt">}</span> <span class="hl com">/** Construct from another auto_ptr holding an object of the same</span> <span class="hl com"> type. This transfers ownership to the newly constructed</span> <span class="hl com"> auto_ptr. */</span> <span class="hl kwd">auto_ptr</span><span class="hl opt">(</span>auto_ptr cm_AUTO_PTR_CONST<span class="hl opt">&</span> a<span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">:</span> <span class="hl kwd">x_</span><span class="hl opt">(</span><span class="hl kwd">cm_AUTO_PTR_CAST</span><span class="hl opt">(</span>a<span class="hl opt">).</span><span class="hl kwd">release</span><span class="hl opt">())</span> <span class="hl opt">{</span> <span class="hl opt">}</span> <span class="hl com">/** Assign from another auto_ptr holding an object of the same type.</span> <span class="hl com"> This transfers ownership to the newly constructed auto_ptr. */</span> auto_ptr<span class="hl opt">&</span> <span class="hl kwc">operator</span><span class="hl opt">=(</span>auto_ptr cm_AUTO_PTR_CONST<span class="hl opt">&</span> a<span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> <span class="hl kwa">this</span><span class="hl opt">-></span><span class="hl kwd">reset</span><span class="hl opt">(</span><span class="hl kwd">cm_AUTO_PTR_CAST</span><span class="hl opt">(</span>a<span class="hl opt">).</span><span class="hl kwd">release</span><span class="hl opt">());</span> <span class="hl kwa">return</span> <span class="hl opt">*</span><span class="hl kwa">this</span><span class="hl opt">;</span> <span class="hl opt">}</span> <span class="hl com">/** Destruct and delete the object held. */</span> <span class="hl opt">~</span><span class="hl kwd">auto_ptr</span><span class="hl opt">()</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> <span class="hl slc">// Assume object destructor is nothrow.</span> <span class="hl kwa">delete this</span><span class="hl opt">-></span>x_<span class="hl opt">;</span> <span class="hl opt">}</span> <span class="hl com">/** Dereference and return a reference to the object held. */</span> X<span class="hl opt">&</span> <span class="hl kwc">operator</span><span class="hl opt">*()</span> <span class="hl kwb">const</span> <span class="hl kwa">throw</span><span class="hl opt">() {</span> <span class="hl kwa">return</span> <span class="hl opt">*</span><span class="hl kwa">this</span><span class="hl opt">-></span>x_<span class="hl opt">; }</span> <span class="hl com">/** Return a pointer to the object held. */</span> X<span class="hl opt">*</span> <span class="hl kwc">operator</span><span class="hl opt">->()</span> <span class="hl kwb">const</span> <span class="hl kwa">throw</span><span class="hl opt">() {</span> <span class="hl kwa">return this</span><span class="hl opt">-></span>x_<span class="hl opt">; }</span> <span class="hl com">/** Return a pointer to the object held. */</span> X<span class="hl opt">*</span> <span class="hl kwd">get</span><span class="hl opt">()</span> <span class="hl kwb">const</span> <span class="hl kwa">throw</span><span class="hl opt">() {</span> <span class="hl kwa">return this</span><span class="hl opt">-></span>x_<span class="hl opt">; }</span> <span class="hl com">/** Return a pointer to the object held and reset to hold no object.</span> <span class="hl com"> This transfers ownership to the caller. */</span> X<span class="hl opt">*</span> <span class="hl kwd">release</span><span class="hl opt">()</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> X<span class="hl opt">*</span> x <span class="hl opt">=</span> <span class="hl kwa">this</span><span class="hl opt">-></span>x_<span class="hl opt">;</span> <span class="hl kwa">this</span><span class="hl opt">-></span>x_ <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">;</span> <span class="hl kwa">return</span> x<span class="hl opt">;</span> <span class="hl opt">}</span> <span class="hl com">/** Assume ownership of the given object. The object previously</span> <span class="hl com"> held is deleted. */</span> <span class="hl kwb">void</span> <span class="hl kwd">reset</span><span class="hl opt">(</span>X<span class="hl opt">*</span> p <span class="hl opt">=</span> <span class="hl num">0</span><span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> <span class="hl kwa">if</span> <span class="hl opt">(</span><span class="hl kwa">this</span><span class="hl opt">-></span>x_ <span class="hl opt">!=</span> p<span class="hl opt">) {</span> <span class="hl slc">// Assume object destructor is nothrow.</span> <span class="hl kwa">delete this</span><span class="hl opt">-></span>x_<span class="hl opt">;</span> <span class="hl kwa">this</span><span class="hl opt">-></span>x_ <span class="hl opt">=</span> p<span class="hl opt">;</span> <span class="hl opt">}</span> <span class="hl opt">}</span> <span class="hl com">/** Convert to an auto_ptr holding an object of a compatible type.</span> <span class="hl com"> This transfers ownership to the returned auto_ptr. */</span> <span class="hl kwc">template</span> <span class="hl opt"><</span><span class="hl kwc">class</span> Y<span class="hl opt">></span> <span class="hl kwc">operator</span> auto_ptr<span class="hl opt"><</span>Y<span class="hl opt">>()</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> <span class="hl kwa">return</span> auto_ptr<span class="hl opt"><</span>Y<span class="hl opt">>(</span><span class="hl kwa">this</span><span class="hl opt">-></span><span class="hl kwd">release</span><span class="hl opt">());</span> <span class="hl opt">}</span> <span class="hl ppc">#if cm_AUTO_PTR_REF</span> <span class="hl com">/** Construct from an auto_ptr_ref. This is used when the</span> <span class="hl com"> constructor argument is a call to a function returning an</span> <span class="hl com"> auto_ptr. */</span> <span class="hl kwd">auto_ptr</span><span class="hl opt">(</span>detail<span class="hl opt">::</span>auto_ptr_ref<span class="hl opt"><</span>X<span class="hl opt">></span> r<span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">:</span> <span class="hl kwd">x_</span><span class="hl opt">(</span>r<span class="hl opt">.</span>p_<span class="hl opt">)</span> <span class="hl opt">{</span> <span class="hl opt">}</span> <span class="hl com">/** Assign from an auto_ptr_ref. This is used when a function</span> <span class="hl com"> returning an auto_ptr is passed on the right-hand-side of an</span> <span class="hl com"> assignment. */</span> auto_ptr<span class="hl opt">&</span> <span class="hl kwc">operator</span><span class="hl opt">=(</span>detail<span class="hl opt">::</span>auto_ptr_ref<span class="hl opt"><</span>X<span class="hl opt">></span> r<span class="hl opt">)</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> <span class="hl kwa">this</span><span class="hl opt">-></span><span class="hl kwd">reset</span><span class="hl opt">(</span>r<span class="hl opt">.</span>p_<span class="hl opt">);</span> <span class="hl kwa">return</span> <span class="hl opt">*</span><span class="hl kwa">this</span><span class="hl opt">;</span> <span class="hl opt">}</span> <span class="hl com">/** Convert to an auto_ptr_ref. This is used when a function</span> <span class="hl com"> returning an auto_ptr is the argument to the constructor of</span> <span class="hl com"> another auto_ptr. */</span> <span class="hl kwc">template</span> <span class="hl opt"><</span><span class="hl kwc">class</span> Y<span class="hl opt">></span> <span class="hl kwc">operator</span> detail<span class="hl opt">::</span>auto_ptr_ref<span class="hl opt"><</span>Y<span class="hl opt">>()</span> <span class="hl kwa">throw</span><span class="hl opt">()</span> <span class="hl opt">{</span> <span class="hl kwa">return</span> detail<span class="hl opt">::</span>auto_ptr_ref<span class="hl opt"><</span>Y<span class="hl opt">>(</span><span class="hl kwa">this</span><span class="hl opt">-></span><span class="hl kwd">release</span><span class="hl opt">(),</span> <span class="hl num">1</span><span class="hl opt">);</span> <span class="hl opt">}</span> <span class="hl ppc">#endif</span> <span class="hl opt">};</span> <span class="hl opt">}</span> <span class="hl slc">// namespace cm</span> <span class="hl slc">// Undo warning suppression.</span> <span class="hl ppc">#if defined(__clang__) && defined(__has_warning)</span> <span class="hl ppc">#if __has_warning(</span><span class="hl pps">"-Wdeprecated"</span><span class="hl ppc">)</span> <span class="hl ppc">#pragma clang diagnostic pop</span> <span class="hl ppc">#endif</span> <span class="hl ppc">#endif</span> <span class="hl ppc">#endif</span> </code></pre></td></tr></table> </div> <!-- class=content --> <div class='footer'>generated by <a href='http://git.zx2c4.com/cgit/about/'>cgit v0.12</a> at 2025-01-30 15:36:39 (GMT)</div> </div> <!-- id=cgit --> </body> </html>