990156dff1
New typemap files for the different C/C++ to Java enum wrapping approaches. git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5921 626c5289-ae23-0410-ae9c-e8d60b6d4f22
68 lines
2.6 KiB
Text
68 lines
2.6 KiB
Text
/* -----------------------------------------------------------------------------
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* Include this file in order for C/C++ enums to be wrapped by the so called
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* typesafe enum pattern. Each enum has an equivalent Java class named after the
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* enum and each enum item is a static instance of this class.
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* ----------------------------------------------------------------------------- */
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%typemap(jni) enum SWIGTYPE "jint"
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%typemap(jtype) enum SWIGTYPE "int"
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%typemap(jstype) enum SWIGTYPE "$javaclassname"
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%typemap(in) enum SWIGTYPE %{ $1 = ($1_ltype)$input; %}
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%typemap(out) enum SWIGTYPE %{ $result = (jint)$1; %}
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%typemap(directorin, descriptor="I") enum SWIGTYPE "$input = (jint) $1;"
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%typemap(javadirectorin) enum SWIGTYPE "$jniinput"
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%typemap(javadirectorout) enum SWIGTYPE "$javacall"
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%typecheck(SWIG_TYPECHECK_INT32) enum SWIGTYPE ""
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%typemap(javain) enum SWIGTYPE "$javainput.swigValue()"
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%typemap(javaout) enum SWIGTYPE {
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return $javaclassname.swigToEnum($jnicall);
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}
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%typemap(throws) enum SWIGTYPE {
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SWIG_JavaThrowException(jenv, SWIG_JavaRuntimeException, "C++ $1_type exception thrown");
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}
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// '$static' will be replaced with either 'static' or nothing depending on whether the enum is an inner Java class or not
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%typemap(javaclassmodifiers) enum SWIGTYPE "public $static class"
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/*
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* The swigToEnum method is used to find the Java enum from a C++ enum integer value. The default one here takes
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* advantage of the fact that most enums do not have initial values specified, so the lookup is fast. If initial
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* values are specified then a lengthy linear search through all possible enums might occur. Specific typemaps could be
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* written to possibly optimise this lookup by taking advantage of characteristics peculiar to the targeted enum.
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* The special variable, $enumvalues, is replaced with a comma separated list of all the enum values.
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*/
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%typemap(javagetcptr) enum SWIGTYPE %{
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public final int swigValue() {
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return swigValue;
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}
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public static $javaclassname swigToEnum(int swigValue) {
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if (swigValue < swigValues.length && swigValues[swigValue].swigValue == swigValue)
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return swigValues[swigValue];
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for (int i = 0; i<swigValues.length; i++)
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if (swigValues[i].swigValue == swigValue)
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return swigValues[i];
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throw new IllegalArgumentException("No enum " + $javaclassname.class + " with value " + swigValue);
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}
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private $javaclassname() {
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this.swigValue = next++;
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}
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private $javaclassname(int swigValue) {
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this.swigValue = swigValue;
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next = swigValue+1;
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}
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private static $javaclassname[] swigValues = { $enumvalues };
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private static int next = 0;
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private final int swigValue;
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%}
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%javaenum(typesafe);
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