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Add new terminator attribute for the csin typemap for C#

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git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@10808 626c5289-ae23-0410-ae9c-e8d60b6d4f22
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William S Fulton 2008-09-02 20:56:52 +00:00
commit 044895ef6e
4 changed files with 210 additions and 9 deletions
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58
Doc/Manual/CSharp.html
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@ -1567,6 +1567,7 @@ Let's assume the code being wrapped is as follows:
<pre>
class CDate {
public:
CDate();
CDate(int year, int month, int day);
int getYear();
int getMonth();
@ -1649,8 +1650,8 @@ The typemaps to achieve this are shown below.
<pre>
%typemap(cstype) const CDate&amp; "System.DateTime"
%typemap(csin,
pre=" CDate temp$csinput = new CDate($csinput.Year, $csinput.Month, $csinput.Day);")
const CDate &amp;
pre=" CDate temp$csinput = new CDate($csinput.Year, $csinput.Month, $csinput.Day);"
) const CDate &amp;
"$csclassname.getCPtr(temp$csinput)"
%typemap(cstype) CDate&amp; "out System.DateTime"
@ -1658,7 +1659,8 @@ The typemaps to achieve this are shown below.
pre=" CDate temp$csinput = new CDate();",
post=" $csinput = new System.DateTime(temp$csinput.getYear(),"
" temp$csinput.getMonth(), temp$csinput.getDay(), 0, 0, 0);",
cshin="out $csinput") CDate &amp;
cshin="out $csinput"
) CDate &amp;
"$csclassname.getCPtr(temp$csinput)"
</pre>
@ -1763,7 +1765,8 @@ will be possible with the following <tt>CDate *</tt> typemaps
pre=" CDate temp$csinput = new CDate($csinput.Year, $csinput.Month, $csinput.Day);",
post=" $csinput = new System.DateTime(temp$csinput.getYear(),"
" temp$csinput.getMonth(), temp$csinput.getDay(), 0, 0, 0);",
cshin="ref $csinput") CDate *
cshin="ref $csinput"
) CDate *
"$csclassname.getCPtr(temp$csinput)"
</pre>
</div>
@ -1788,6 +1791,50 @@ public class example {
</pre>
</div>
<p>
The following typemap is the same as the previous but demonstrates how a using block can be used for the temporary variable.
The only change to the previous typemap is the introduction of the 'terminator' attribute to terminate the <tt>using</tt> block.
The <tt>subtractYears</tt> method is nearly identical to the above <tt>addYears</tt> method.
</p>
<div class="code">
<pre>
%typemap(csin,
pre=" using (CDate temp$csinput = new CDate($csinput.Year, $csinput.Month, $csinput.Day)) {",
post=" $csinput = new System.DateTime(temp$csinput.getYear(),"
" temp$csinput.getMonth(), temp$csinput.getDay(), 0, 0, 0);",
terminator=" } // terminate temp$csinput using block",
cshin="ref $csinput"
) CDate *
"$csclassname.getCPtr(temp$csinput)"
void subtractYears(CDate *pDate, int years) {
*pDate = CDate(pDate-&gt;getYear() - years, pDate-&gt;getMonth(), pDate-&gt;getDay());
}
</pre>
</div>
<p>
The resulting generated code shows the termination of the <tt>using</tt> block:
</p>
<div class="code">
<pre>
public class example {
public static void subtractYears(ref System.DateTime pDate, int years) {
using (CDate temppDate = new CDate(pDate.Year, pDate.Month, pDate.Day)) {
try {
examplePINVOKE.subtractYears(CDate.getCPtr(temppDate), years);
} finally {
pDate = new System.DateTime(temppDate.getYear(), temppDate.getMonth(), temppDate.getDay(), 0, 0, 0);
}
} // terminate temppDate using block
}
...
}
</pre>
</div>
<H3><a name="csharp_date_properties"></a>17.5.4 A date example demonstrating marshalling of C# properties</H3>
@ -1827,7 +1874,8 @@ The typemap type required is thus <tt>CDate *</tt>. Given that the previous sect
pre=" CDate temp$csinput = new CDate($csinput.Year, $csinput.Month, $csinput.Day);",
post=" $csinput = new System.DateTime(temp$csinput.getYear(),"
" temp$csinput.getMonth(), temp$csinput.getDay(), 0, 0, 0);",
cshin="ref $csinput") CDate *
cshin="ref $csinput"
) CDate *
"$csclassname.getCPtr(temp$csinput)"
%typemap(csvarin, excode=SWIGEXCODE2) CDate * %{