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Enum typemaps taken out of csharp.swg.

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New typemap files for the different C/C++ to C# enum wrapping approaches.


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5920 626c5289-ae23-0410-ae9c-e8d60b6d4f22
This commit is contained in:
William S Fulton 2004-05-24 20:08:04 +00:00
commit 064082e9b5
4 changed files with 141 additions and 23 deletions
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65
Lib/csharp/enumtypesafe.swg Normal file
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/* -----------------------------------------------------------------------------
* Include this file in order for C/C++ enums to be wrapped by the so called
* typesafe enum pattern. Each enum has an equivalent C# class named after the
* enum and each enum item is a static instance of this class.
* ----------------------------------------------------------------------------- */
%typemap(ctype) enum SWIGTYPE "int"
%typemap(imtype) enum SWIGTYPE "int"
%typemap(cstype) enum SWIGTYPE "$csclassname"
%typemap(in) enum SWIGTYPE %{ $1 = ($1_ltype)$input; %}
%typemap(out) enum SWIGTYPE %{ $result = $1; %}
%typecheck(SWIG_TYPECHECK_INT32) enum SWIGTYPE ""
%typemap(throws) enum SWIGTYPE {
SWIG_CSharpThrowException(SWIG_CSharpException, "C++ $1_type exception thrown");
}
%typemap(csin) enum SWIGTYPE "$csinput.swigValue"
%typemap(csout) enum SWIGTYPE {
return $csclassname.swigToEnum($imcall);
}
%typemap(csvarout) enum SWIGTYPE %{
get {
return $csclassname.swigToEnum($imcall);
} %}
%typemap(csclassmodifiers) enum SWIGTYPE "public class"
/*
* The swigToEnum method is used to find the C# enum from a C++ enum integer value. The default one here takes
* advantage of the fact that most enums do not have initial values specified, so the lookup is fast. If initial
* values are specified then a lengthy linear search through all possible enums might occur. Specific typemaps could be
* written to possibly optimise this lookup by taking advantage of characteristics peculiar to the targeted enum.
* The special variable, $enumvalues, is replaced with a comma separated list of all the enum values.
*/
%typemap(csgetcptr) enum SWIGTYPE %{
public readonly int swigValue;
public static $csclassname swigToEnum(int swigValue) {
if (swigValue < swigValues.Length && swigValues[swigValue].swigValue == swigValue)
return swigValues[swigValue];
for (int i = 0; i<swigValues.Length; i++)
if (swigValues[i].swigValue == swigValue)
return swigValues[i];
throw new System.ArgumentOutOfRangeException("No enum $csclassname with value " + swigValue);
}
private $csclassname() {
this.swigValue = next++;
}
private $csclassname(int swigValue) {
this.swigValue = swigValue;
next = swigValue+1;
}
private static $csclassname[] swigValues = { $enumvalues };
private static int next = 0;
%}
%csenum(typesafe);