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swig/Lib/typemaps/exception.swg

+/* -----------------------------------------------------------------------------
+ * See the LICENSE file for information on copyright, usage and redistribution
+ * of SWIG, and the README file for authors - http://www.swig.org/release.html.
+ *
+ * exceptions.swg
+ *
+ * This SWIG library file provides language independent exception handling
+ * ----------------------------------------------------------------------------- */
+
+%include <typemaps/swigmacros.swg>
+
+
+/* macros for error manipulation */
+#define %nullref_fmt()                     "invalid null reference "               
+#define %varfail_fmt(_type,_name)          "in variable '"`_name`"' of type '"`_type`"'"
+#ifndef %argfail_fmt
+#define %argfail_fmt(_type,_name,_argn)    "in method '" `_name` "', argument " `_argn`" of type '" `_type`"'"
+#endif
+#define %outfail_fmt(_type)                "in output value of type '"_type"'"
+#ifndef %argnullref_fmt
+#define %argnullref_fmt(_type,_name,_argn) %nullref_fmt() %argfail_fmt(_type, _name, _argn)
+#endif  
+#define %varnullref_fmt(_type,_name)       %nullref_fmt() %varfail_fmt(_type, _name)               
+#define %outnullref_fmt(_type)             %nullref_fmt() %outfail_fmt(_type)         
+
+/* setting an error */
+#define %error(code,msg...)               SWIG_Error(code, msg)
+#define %type_error(msg...)               SWIG_Error(SWIG_TypeError,  msg)
+
+
+
+%insert("runtime") {
+
+%define_as(SWIG_exception_fail(code, msg), %block(%error(code, msg); SWIG_fail))
+
+%define_as(SWIG_contract_assert(expr, msg), if (!(expr)) { %error(SWIG_RuntimeError, msg); SWIG_fail; } else)
+
+}
+
+#ifdef __cplusplus
+/*
+  You can use the SWIG_CATCH_STDEXCEPT macro with the %exception
+  directive as follows:
+
+  %exception {
+    try {
+      $action
+    }
+    catch (my_except& e) {
+      ...
+    }
+    SWIG_CATCH_STDEXCEPT // catch std::exception
+    catch (...) {
+     SWIG_exception_fail(SWIG_UnknownError, "Unknown exception");
+    }
+  }
+*/
+%{
+#include <stdexcept>
+%}
+%define SWIG_CATCH_STDEXCEPT
+  /* catching std::exception  */
+  catch (std::invalid_argument& e) {
+    SWIG_exception_fail(SWIG_ValueError, e.what() );
+  } catch (std::domain_error& e) {
+    SWIG_exception_fail(SWIG_ValueError, e.what() );
+  } catch (std::overflow_error& e) {
+    SWIG_exception_fail(SWIG_OverflowError, e.what() );
+  } catch (std::out_of_range& e) {
+    SWIG_exception_fail(SWIG_IndexError, e.what() );
+  } catch (std::length_error& e) {
+    SWIG_exception_fail(SWIG_IndexError, e.what() );
+  } catch (std::runtime_error& e) {
+    SWIG_exception_fail(SWIG_RuntimeError, e.what() );
+  } catch (std::exception& e) {
+    SWIG_exception_fail(SWIG_SystemError, e.what() );
+  }
+%enddef
+%define SWIG_CATCH_UNKNOWN
+  catch (std::exception& e) {
+    SWIG_exception_fail(SWIG_SystemError, e.what() );
+  }
+  catch (...) {
+    SWIG_exception_fail(SWIG_UnknownError, "unknown exception");
+  }
+%enddef
+
+
+#endif /* __cplusplus */