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| <h5 class="subsubsection">15.4.3.1 Method Names in Commands</h5> |
| |
| <p>The following commands have been extended to accept Objective-C method |
| names as line specifications: |
| |
| <p><a name="index-clear_0040r_007b_002c-and-Objective_002dC_007d-826"></a><a name="index-break_0040r_007b_002c-and-Objective_002dC_007d-827"></a><a name="index-info-line_0040r_007b_002c-and-Objective_002dC_007d-828"></a><a name="index-jump_0040r_007b_002c-and-Objective_002dC_007d-829"></a><a name="index-list_0040r_007b_002c-and-Objective_002dC_007d-830"></a> |
| <ul> |
| <li><code>clear</code> |
| <li><code>break</code> |
| <li><code>info line</code> |
| <li><code>jump</code> |
| <li><code>list</code> |
| </ul> |
| |
| <p>A fully qualified Objective-C method name is specified as |
| |
| <pre class="smallexample"> -[<var>Class</var> <var>methodName</var>] |
| </pre> |
| <p>where the minus sign is used to indicate an instance method and a |
| plus sign (not shown) is used to indicate a class method. The class |
| name <var>Class</var> and method name <var>methodName</var> are enclosed in |
| brackets, similar to the way messages are specified in Objective-C |
| source code. For example, to set a breakpoint at the <code>create</code> |
| instance method of class <code>Fruit</code> in the program currently being |
| debugged, enter: |
| |
| <pre class="smallexample"> break -[Fruit create] |
| </pre> |
| <p>To list ten program lines around the <code>initialize</code> class method, |
| enter: |
| |
| <pre class="smallexample"> list +[NSText initialize] |
| </pre> |
| <p>In the current version of <span class="sc">gdb</span>, the plus or minus sign is |
| required. In future versions of <span class="sc">gdb</span>, the plus or minus |
| sign will be optional, but you can use it to narrow the search. It |
| is also possible to specify just a method name: |
| |
| <pre class="smallexample"> break create |
| </pre> |
| <p>You must specify the complete method name, including any colons. If |
| your program's source files contain more than one <code>create</code> method, |
| you'll be presented with a numbered list of classes that implement that |
| method. Indicate your choice by number, or type ‘<samp><span class="samp">0</span></samp>’ to exit if |
| none apply. |
| |
| <p>As another example, to clear a breakpoint established at the |
| <code>makeKeyAndOrderFront:</code> method of the <code>NSWindow</code> class, enter: |
| |
| <pre class="smallexample"> clear -[NSWindow makeKeyAndOrderFront:] |
| </pre> |
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