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group___debugging-_tools.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<div id="projectname">Nimbus
 <span id="projectnumber">0.9.0 - <a href="http://github.com/jverkoey/nimbus">Nimbus is proudly hosted on Github</a></span>
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<a href="#define-members">Defines</a> |
<a href="#var-members">Variables</a> </div>
<div class="headertitle">
<div class="title">Debugging Tools</div> </div>
<div class="ingroups"><a class="el" href="group___nimbus_core.html">Nimbus Core</a></div></div>
<div class="contents">
<hr/><a name="details" id="details"></a><h2>Overview</h2>
<p>For inspecting code and writing to logs in debug builds. </p>
<p>Nearly all of the following macros will only do anything if the DEBUG macro is defined. The recommended way to enable the debug tools is to specify DEBUG in the "Preprocessor Macros" field in your application's Debug target settings. Be careful not to set this for your release or app store builds because this will enable code that may cause your app to be rejected.</p>
<h2>Debug Assertions</h2>
<p>Debug assertions are a lightweight "sanity check". They won't crash the app, nor will they be included in release builds. They <em>will</em> halt the app's execution when debugging so that you can inspect the values that caused the failure.</p>
<div class="fragment"><pre class="fragment"> <a class="code" href="group___debugging-_tools.html#ga13cc3ae82820ea8141bc319bcb76ab7f" title="Assertions that only fire when DEBUG is defined.">NIDASSERT</a>(statement);
</pre></div><p>If <em>statement</em> is false, the statement will be written to the log and if you are running in the simulator with a debugger attached, the app will break on the assertion line.</p>
<h2>Debug Logging</h2>
<div class="fragment"><pre class="fragment"> <a class="code" href="group___debugging-_tools.html#ga74e1fbd5193e3020f3abf072dcd59f26" title="Only writes to the log when DEBUG is defined.">NIDPRINT</a>(<span class="stringliteral">@"formatted log text %d"</span>, param1);
</pre></div><p>Print the given formatted text to the log.</p>
<div class="fragment"><pre class="fragment"> <a class="code" href="group___debugging-_tools.html#gaa606f4ba1dd48de5e2fd679b7d8b22d8" title="Write the containing method's name to the log using NIDPRINT.">NIDPRINTMETHODNAME</a>();
</pre></div><p>Print the current method name to the log.</p>
<div class="fragment"><pre class="fragment"> <a class="code" href="group___debugging-_tools.html#ga2d769dcaac3915eea5b9860a40bd179a" title="Only writes to the log if condition is satisified.">NIDCONDITIONLOG</a>(statement, <span class="stringliteral">@"formatted log text %d"</span>, param1);
</pre></div><p>If statement is true, then the formatted text will be written to the log.</p>
<div class="fragment"><pre class="fragment"> <a class="code" href="group___debugging-_tools.html#gaf0d5ca9cb5bd5c57cfaee0b9a565bb84" title="Only writes to the log if NIMaxLogLevel >= NILOGLEVEL_INFO.">NIDINFO</a>/<a class="code" href="group___debugging-_tools.html#gacc8f90bb05765e613bb0dbb16d372dfc" title="Only writes to the log if NIMaxLogLevel >= NILOGLEVEL_WARNING.">NIDWARNING</a>/<a class="code" href="group___debugging-_tools.html#gab5d8a773517976d97335706474ae1317" title="Only writes to the log if NIMaxLogLevel >= NILOGLEVEL_ERROR.">NIDERROR</a>(<span class="stringliteral">@"formatted log text %d"</span>, param1);
</pre></div><p>Will only write the formatted text to the log if NIMaxLogLevel is greater than the respective NID* method's log level. See below for log levels.</p>
<p>The default maximum log level is NILOGLEVEL_WARNING.</p>
<h3>Turning up the log level while the app is running</h3>
<p>NIMaxLogLevel is declared a non-const extern so that you can modify it at runtime. This can be helpful for turning logging on while the application is running.</p>
<div class="fragment"><pre class="fragment"> <a class="code" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505" title="The maximum log level to output for Nimbus debug logs.">NIMaxLogLevel</a> = NILOGLEVEL_INFO;
</pre></div> <table class="memberdecls">
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Defines</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#ga13cc3ae82820ea8141bc319bcb76ab7f">NIDASSERT</a>(xx)   { if (!(xx)) { NIDPRINT(@"NIDASSERT failed: %s", #xx); } } ((void)0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#ga74e1fbd5193e3020f3abf072dcd59f26">NIDPRINT</a>(xx,...)   NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#gaa606f4ba1dd48de5e2fd679b7d8b22d8">NIDPRINTMETHODNAME</a>()   NIDPRINT(@"%s", __PRETTY_FUNCTION__)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#ga2d769dcaac3915eea5b9860a40bd179a">NIDCONDITIONLOG</a>(condition, xx,...)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#gab5d8a773517976d97335706474ae1317">NIDERROR</a>(xx,...)   NIDCONDITIONLOG((NILOGLEVEL_ERROR <= <a class="el" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505">NIMaxLogLevel</a>), xx, ##__VA_ARGS__)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#gacc8f90bb05765e613bb0dbb16d372dfc">NIDWARNING</a>(xx,...)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#gaf0d5ca9cb5bd5c57cfaee0b9a565bb84">NIDINFO</a>(xx,...)   NIDCONDITIONLOG((NILOGLEVEL_INFO <= <a class="el" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505">NIMaxLogLevel</a>), xx, ##__VA_ARGS__)</td></tr>
<tr><td colspan="2"><h2><a name="var-members"></a>
Variables</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">NSInteger </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505">NIMaxLogLevel</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">BOOL </td><td class="memItemRight" valign="bottom"><a class="el" href="group___debugging-_tools.html#ga9b5abee5150b99d8ccce041099d44706">NIDebugAssertionsShouldBreak</a></td></tr>
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<hr/><h2>Define Documentation</h2>
<a class="anchor" id="ga13cc3ae82820ea8141bc319bcb76ab7f"></a><!-- doxytag: member="NIDebuggingTools.h::NIDASSERT" ref="ga13cc3ae82820ea8141bc319bcb76ab7f" args="(xx)" -->
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<td class="memname">#define NIDASSERT</td>
<td>(</td>
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<td class="paramname">xx</td><td>)</td>
<td>   { if (!(xx)) { NIDPRINT(@"NIDASSERT failed: %s", #xx); } } ((void)0)</td>
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<p>Assertions that only fire when DEBUG is defined. </p>
<p>An assertion is like a programmatic breakpoint. Use it for sanity checks to save headache while writing your code. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8h_source.html#l00105">105</a> of file <a class="el" href="_n_i_debugging_tools_8h_source.html">NIDebuggingTools.h</a>.</p>
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<a class="anchor" id="ga74e1fbd5193e3020f3abf072dcd59f26"></a><!-- doxytag: member="NIDebuggingTools.h::NIDPRINT" ref="ga74e1fbd5193e3020f3abf072dcd59f26" args="(xx,...)" -->
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<td class="memname">#define NIDPRINT</td>
<td>(</td>
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<td class="paramname">xx, </td>
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<td></td><td>   NSLog(@"%s(%d): " xx, __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)</td>
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<p>Only writes to the log when DEBUG is defined. </p>
<p>This log method will always write to the log, regardless of log levels. It is used by all of the other logging methods in Nimbus' debugging library. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8h_source.html#l00143">143</a> of file <a class="el" href="_n_i_debugging_tools_8h_source.html">NIDebuggingTools.h</a>.</p>
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<a class="anchor" id="gaa606f4ba1dd48de5e2fd679b7d8b22d8"></a><!-- doxytag: member="NIDebuggingTools.h::NIDPRINTMETHODNAME" ref="gaa606f4ba1dd48de5e2fd679b7d8b22d8" args="()" -->
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<td class="memname">#define NIDPRINTMETHODNAME</td>
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<td>   NIDPRINT(@"%s", __PRETTY_FUNCTION__)</td>
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<p>Write the containing method's name to the log using NIDPRINT. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8h_source.html#l00151">151</a> of file <a class="el" href="_n_i_debugging_tools_8h_source.html">NIDebuggingTools.h</a>.</p>
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<a class="anchor" id="ga2d769dcaac3915eea5b9860a40bd179a"></a><!-- doxytag: member="NIDebuggingTools.h::NIDCONDITIONLOG" ref="ga2d769dcaac3915eea5b9860a40bd179a" args="(condition, xx,...)" -->
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<td class="memname">#define NIDCONDITIONLOG</td>
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<td class="paramname">condition, </td>
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<b>Value:</b><div class="fragment"><pre class="fragment">{ <span class="keywordflow">if</span> ((condition)) { <a class="code" href="group___debugging-_tools.html#ga74e1fbd5193e3020f3abf072dcd59f26" title="Only writes to the log when DEBUG is defined.">NIDPRINT</a>(xx, ##__VA_ARGS__); } \
} ((void)0)
</pre></div>
<p>Only writes to the log if condition is satisified. </p>
<p>This macro powers the level-based loggers. It can also be used for conditionally enabling families of logs. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8h_source.html#l00160">160</a> of file <a class="el" href="_n_i_debugging_tools_8h_source.html">NIDebuggingTools.h</a>.</p>
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<a class="anchor" id="gab5d8a773517976d97335706474ae1317"></a><!-- doxytag: member="NIDebuggingTools.h::NIDERROR" ref="gab5d8a773517976d97335706474ae1317" args="(xx,...)" -->
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<td class="memname">#define NIDERROR</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">xx, </td>
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<td class="paramtype"> </td>
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<td>)</td>
<td></td><td>   NIDCONDITIONLOG((NILOGLEVEL_ERROR <= <a class="el" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505">NIMaxLogLevel</a>), xx, ##__VA_ARGS__)</td>
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<p>Only writes to the log if NIMaxLogLevel >= NILOGLEVEL_ERROR. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8h_source.html#l00170">170</a> of file <a class="el" href="_n_i_debugging_tools_8h_source.html">NIDebuggingTools.h</a>.</p>
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<a class="anchor" id="gacc8f90bb05765e613bb0dbb16d372dfc"></a><!-- doxytag: member="NIDebuggingTools.h::NIDWARNING" ref="gacc8f90bb05765e613bb0dbb16d372dfc" args="(xx,...)" -->
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<td class="memname">#define NIDWARNING</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname">xx, </td>
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<b>Value:</b><div class="fragment"><pre class="fragment"><a class="code" href="group___debugging-_tools.html#ga2d769dcaac3915eea5b9860a40bd179a" title="Only writes to the log if condition is satisified.">NIDCONDITIONLOG</a>((NILOGLEVEL_WARNING <= <a class="code" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505" title="The maximum log level to output for Nimbus debug logs.">NIMaxLogLevel</a>), \
xx, ##__VA_ARGS__)
</pre></div>
<p>Only writes to the log if NIMaxLogLevel >= NILOGLEVEL_WARNING. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8h_source.html#l00175">175</a> of file <a class="el" href="_n_i_debugging_tools_8h_source.html">NIDebuggingTools.h</a>.</p>
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<a class="anchor" id="gaf0d5ca9cb5bd5c57cfaee0b9a565bb84"></a><!-- doxytag: member="NIDebuggingTools.h::NIDINFO" ref="gaf0d5ca9cb5bd5c57cfaee0b9a565bb84" args="(xx,...)" -->
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<td class="memname">#define NIDINFO</td>
<td>(</td>
<td class="paramtype"> </td>
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<td>)</td>
<td></td><td>   NIDCONDITIONLOG((NILOGLEVEL_INFO <= <a class="el" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505">NIMaxLogLevel</a>), xx, ##__VA_ARGS__)</td>
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<p>Only writes to the log if NIMaxLogLevel >= NILOGLEVEL_INFO. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8h_source.html#l00181">181</a> of file <a class="el" href="_n_i_debugging_tools_8h_source.html">NIDebuggingTools.h</a>.</p>
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<hr/><h2>Variable Documentation</h2>
<a class="anchor" id="ga4772ce14310fecf30ed2bc36dfe7c505"></a><!-- doxytag: member="NIDebuggingTools.h::NIMaxLogLevel" ref="ga4772ce14310fecf30ed2bc36dfe7c505" args="" -->
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<td class="memname">NSInteger <a class="el" href="group___debugging-_tools.html#ga4772ce14310fecf30ed2bc36dfe7c505">NIMaxLogLevel</a></td>
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<p>The maximum log level to output for <a class="el" href="interface_nimbus.html" title="The Nimbus state interface.">Nimbus</a> debug logs. </p>
<p>This value may be changed at run-time.</p>
<p>The default value is NILOGLEVEL_WARNING. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8m_source.html#l00020">20</a> of file <a class="el" href="_n_i_debugging_tools_8m_source.html">NIDebuggingTools.m</a>.</p>
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<td class="memname">BOOL <a class="el" href="group___debugging-_tools.html#ga9b5abee5150b99d8ccce041099d44706">NIDebugAssertionsShouldBreak</a></td>
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<p>Whether or not debug assertions should halt program execution like a breakpoint when they fail. </p>
<p>An example of when this is used is in unit tests, when failure cases are tested that will fire debug assertions.</p>
<p>The default value is YES. </p>
<p>Definition at line <a class="el" href="_n_i_debugging_tools_8m_source.html#l00021">21</a> of file <a class="el" href="_n_i_debugging_tools_8m_source.html">NIDebuggingTools.m</a>.</p>
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