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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2 Final//EN" "http://www.w3.org/MarkUp/Wilbur/HTML32.dtd">
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<title>What's New in DEF 5.8 C/C++ Programming Interface -- 1</title>
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<div>What's New in DEF 5.8 C&#47;C++ Programming Interface</div>
<font >
<div></div>
</font>
</font>
</center>
</h3>
<br>
</p>
<div>
<h1>1<a name="1032955">&nbsp;</a></h1>
<h1><a name="1033512">New Features</a></h1>
<p><a name="1036125">This chapter describes the new features that were added in this release of the DEF application programming interface.</a></p>
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<td><a href="#1034329" title="1" name="1036129"><font color="Blue"><u>General Reader Changes</u></font></a><a href="#1034329" title="1"> </a></td>
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<td><a href="#1036307" title="1" name="1036240"><font color="Blue"><u>Reader Setup and Control Routines</u></font></a><a href="#1036307" title="1"> </a></td>
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<td><a href="#1036139" title="1" name="1036547"><font color="Blue"><u>Writer Routines &#45; Blockages</u></font></a><a href="#1036139" title="1"> </a></td>
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<td><a href="#1036331" title="1" name="1036133"><font color="Blue"><u>Reader Class Routines</u></font></a><a href="#1036331" title="1"> </a></td>
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<td><a href="#1034524" title="1" name="1034618"><font color="Blue"><u>DEF Reader Callback Routines</u></font></a><a href="#1034524" title="1"> </a></td>
</tr>
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<h2><a name="1034329">General Reader Changes</a></h2>
<p><a name="1035549">The following changes were made in the latest version of the parser:</a></p>
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<td><a name="1035556"><strong>Elimination of static data</strong></a>: In the latest version, the parser architecture has changed from C style&#45;based to C++ style&#45;based. In the previous version of the parser, most of the parser data were stored in static variables and the data lifecycle was based on initializers and cleaners. The new architecture places data in data singletons and uses C++ constructors and destructors. The switch to the C++ architecture has improved the parser re&#45;enterability, made the data flow more robust, and helped clean multiple memory leaks in the parser code.</td>
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<td><a name="1035665"><strong>Introduction of parsing sesions</strong></a>: In the previous version, data were stored in static variables and, therefore, were retained across all parsing cycles. This meant that if a property was defined once, it continued to be defined in the next DEF file reads. In some applications, this feature was actively used. In others, it disturbed expected application behavior. To address this issue, the latest version of the parser introduces two modes of files processing &#45; compatibility mode and session&#45;based mode.</td>
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<td><a name="1035714">Compatibility mode (session&#45;less mode) &#45; This mode is compatible with the old parser behavior. You can call the parser initialization once with </a><font size="2" face="'Courier New'" color="#000000">defrInit()</font>, adjust parsing settings and initialize the parser callbacks any time. The properties in <font size="2" face="'Courier New'" color="#000000">PROPERTYDEFINITIONS</font> sections will be active in all subsequent file reads. </td>
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<td><a name="1035970">Session&#45;based mode &#45; This mode introduces the concept of a parsing session - the parser configuration settings will be active during the session time and will be cleaned on its end. The parsing session also controls </a><font size="2" face="'Courier New'" color="#000000">PROPERTYDEFINITIONS</font> data. Property definitions remain active throughout the parsing session time and are cleaned at the end of the session. The session&#45;based mode does not require calling callbacks and configuration unset functions &#45; all callbacks and properties will be set to defaults by <font size="2" face="'Courier New'" color="#000000">defrClear()</font> or the next session <font size="2" face="'Courier New'" color="#000000">defrInitSession()</font> call.</td>
</tr>
</table>
</div>
<blockquote><a name="1035974">By default, the DEF parser works in the compatibility mode. To activate the session&#45;based mode, you must use </a><font size="2" face="'Courier New'" color="#000000">defrInitSession()</font> instead of <font size="2" face="'Courier New'" color="#000000">defrInit()</font>. </blockquote>
<blockquote><font color="#000000"><strong>Note: </strong></font><a name="1035975">Currently, the compatibility mode is used for all old applications for which code has not been adjusted. The </a><font size="2" face="'Courier New'" color="#000000">def2oa</font> translator has been adjusted to use the session&#45;based parsing mode.</blockquote>
<blockquote><a name="1036304">For more information, see </a><a href="../defapi/ch1Intro.html#WorkingModes" target="external_window"><font color="#0000ff"><u>"DEF Reader Working Modes"</u></font></a> in the <font color="#000000"><em>DEF C&#47;C++ Programming Interface (Open Licensing Program)</em></font>.</blockquote>
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</td>
<td><a name="1036305"><strong>Long DEF Files Support</strong></a>: In this version, the DEF line counter switched to 64&#45;bit integer type, making it possible to process files with more than two billion lines. </td>
</tr>
</table>
</div>
<h2><a name="1036307">Reader Setup and Control Routines</a></h2>
<p><a name="1036150">The following reader setup and class routines were added in this release:</a></p>
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<u><a href="../defapi/ch2DEFsetup.html#defrInitSession" target="external_window" name="1036161"><font size="2" face="'Courier New'" color="#0000ff"><u>defrInitSession</u></font></a></u>
</td>
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</table>
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<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
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<u><a href="../defapi/ch2DEFsetup.html#defrClear" target="external_window" name="1036171"><font size="2" face="'Courier New'" color="#0000ff"><u>defrClear</u></font></a></u>
</td>
</tr>
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<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
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<td>
<u><a href="../defapi/ch2DEFsetup.html#defrGetAllowComponentNets" target="external_window" name="1036207"><font size="2" face="'Courier New'" color="#0000ff"><u>defrGetAllowComponentNets</u></font></a></u>
</td>
</tr>
</table>
</div>
<p><a name="1036178">For more information, see </a><a href="../defapi/ch2DEFsetup.html" target="external_window"><font color="#0000ff"><u>"DEF Reader Setup and Control Routines"</u></font></a> in the <font color="#000000"><em>DEF C&#47;C++ Programming Interface (Open Licensing Program)</em></font>.</p>
<h2><a name="1036139">Writer Routines &#45; Blockages</a></h2>
<p><a name="1036342">The following writer routies for blockages were added in this release:</a></p>
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<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesLayer" target="external_window" name="1036384"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesLayer</u></font></a></u>
</td>
</tr>
</table>
</div>
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<table border="0" cellspacing="0" cellpadding="3" summary="">
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<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesLayerFills" target="external_window" name="1036385"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesLayerFills</u></font></a></u>
</td>
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</table>
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<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
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<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesLayerPushdown" target="external_window" name="1036386"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesLayerPushdown</u></font></a></u>
</td>
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</table>
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<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesLayerExceptpgnet" target="external_window" name="1036387"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesLayerExceptpgnet</u></font></a></u>
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</table>
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<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesLayerComponent" target="external_window" name="1036388"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesLayerComponent</u></font></a></u>
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<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
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<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesLayerDesignRuleWidth" target="external_window" name="1036389"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesLayerDesignRuleWidth</u></font></a></u>
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<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesPlacement" target="external_window" name="1036390"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesPlacement</u></font></a></u>
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</table>
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<table border="0" cellspacing="0" cellpadding="3" summary="">
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<td width="31.999679999999998">
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<nobr>
<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
</nobr>
</div>
</td>
<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesPlacementComponent" target="external_window" name="1036391"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesPlacementComponent</u></font></a></u>
</td>
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</table>
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<td width="31.999679999999998">
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<nobr>
<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
</nobr>
</div>
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<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesPlacementPushdown" target="external_window" name="1036392"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesPlacementPushdown</u></font></a></u>
</td>
</tr>
</table>
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</td>
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<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesPlacementSoft" target="external_window" name="1036393"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesPlacementSoft</u></font></a></u>
</td>
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</table>
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<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesPlacementPartial" target="external_window" name="1036394"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesPlacementPartial</u></font></a></u>
</td>
</tr>
</table>
</div>
<div>
<table border="0" cellspacing="0" cellpadding="3" summary="">
<tr valign="baseline">
<td width="31.999679999999998">
<div>
<nobr>
<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
</nobr>
</div>
</td>
<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesRect" target="external_window" name="1036395"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesRect</u></font></a></u>
</td>
</tr>
</table>
</div>
<div>
<table border="0" cellspacing="0" cellpadding="3" summary="">
<tr valign="baseline">
<td width="31.999679999999998">
<div>
<nobr>
<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
</nobr>
</div>
</td>
<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesPolygon" target="external_window" name="1036396"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesPolygon</u></font></a></u>
</td>
</tr>
</table>
</div>
<div>
<table border="0" cellspacing="0" cellpadding="3" summary="">
<tr valign="baseline">
<td width="31.999679999999998">
<div>
<nobr>
<u><font color="#000000"><img src="images/b_bullet.gif" alt="ParagraphBullet" border="0"></font></u>
</nobr>
</div>
</td>
<td>
<u><a href="../defapi/ch6DEFwriter.html#defwBlockagesLayerMask" target="external_window" name="1036373"><font size="2" face="'Courier New'" color="#0000ff"><u>defwBlockagesLayerMask</u></font></a></u>
</td>
</tr>
</table>
</div>
<p><a name="1036358">Most of these functions duplicate old style functions with similar names. The old&#45;style functions will be obsoleted in the next parser release.</a></p>
<p><a name="1036540">For more information, see </a><a href="../defapi/ch6DEFwriter.html" target="external_window"><font color="#0000ff"><u>"DEF Writer Routines"</u></font></a> in the <font color="#000000"><em>DEF C&#47;C++ Programming Interface (Open Licensing Program)</em></font>.</p>
<h2><a name="1036331">Reader Class Routines</a></h2>
<p><a name="1034625">The following reader class routines were added in this release:</a></p>
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<table border="0" cellspacing="0" cellpadding="3" summary="">
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<td width="31.999679999999998">
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</nobr>
</div>
</td>
<td>
<u><a href="../defapi/ch4DEFclasses.html#defiComponentMaskShiftLayer" target="external_window" name="1035347"><font size="2" face="'Courier New'" color="#0000ff"><u>defiComponentMaskShiftLayer</u></font></a></u>
</td>
</tr>
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<p><a name="1035483">For more information, see </a><a href="../defapi/ch4DEFclasses.html" target="external_window"><font color="#0000ff"><u>"DEF Reader Classes"</u></font></a> in the <font color="#000000"><em>DEF C&#47;C++ Programming Interface (Open Licensing Program)</em></font>.</p>
<h2><a name="1034524">DEF Reader Callback Routines</a></h2>
<p><a name="1035452">The following reader callback routines were added in this release:</a></p>
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<u><a href="../defapi/ch4DEFclasses.html#defrComponentMaskShiftLayerCbkType" target="external_window" name="1035454"><font size="2" face="'Courier New'" color="#0000ff"><u>defrComponentMaskShiftLayerCbkType</u></font></a></u>
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<p><a name="1035456">For more information, see </a><a href="../defapi/ch3DEFcallback.html" target="external_window"><font color="#0000ff"><u>"DEF Reader Callback Routines"</u></font></a> in the <font color="#000000"><em>DEF C&#47;C++ Programming Interface (Open Licensing Program)</em></font>.</p>
<p><a name="1035260">&nbsp;</a></p>
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