swig/Lib/c/cexcept.swg

/* -----------------------------------------------------------------------------
 * clabels.swg
 *
 * Exception handling code and typemaps for C module.
 * ----------------------------------------------------------------------------- */

%typemap(throws) BASIC_INT_TYPES {
  char error_msg[256];
  sprintf(error_msg, "C++ $1_type exception thrown, value: %d", $1);
  SWIG_CThrowException(0, error_msg);
}

%apply BASIC_INT_TYPES { int, long, short, unsigned int, unsigned long, unsigned short, int &, long &, short &, unsigned int &, unsigned long &, unsigned short & };

%typemap(throws) char *, const char * {
  SWIG_CThrowException(0, $1);
}

// this should match only SwigObj objects
%typemap(throws) SWIGTYPE {
  SwigObj *c_ex;
  c_ex = SWIG_create_object(&$1, SWIG_STR($1_basetype));
  SWIG_CThrowException(c_ex, "C++ $1_type exception thrown");
}

%typemap(throws) SWIGTYPE * {
  SwigObj *c_ex;
  c_ex = SWIG_create_object($1, SWIG_STR($1_basetype));
  SWIG_CThrowException(c_ex, "C++ $1_type exception thrown");
}

%insert("runtime") %{
#include <typeinfo>

SWIGINTERN void SWIG_terminate();

#define SWIG_MAX_RT_STACK 256
#define SWIG_REGISTRY_INIT 256

SWIGEXPORTC struct SWIG_exc_struct {
  int code;
  char *msg;
  SwigObj *klass;
  int handled;
} SWIG_exc = { 0, 0, 0, 0 };

SWIGEXPORTC jmp_buf SWIG_rt_env;
SWIGINTERN jmp_buf SWIG_cpp_back_env;
SWIGINTERN jmp_buf *SWIG_rt_stack_base = 0;
SWIGINTERN jmp_buf *SWIG_rt_stack_ptr = 0;

SWIGINTERN void SWIG_rt_stack_push() {
  if (!SWIG_rt_stack_base) {
    SWIG_rt_stack_base = SWIG_rt_stack_ptr = (jmp_buf *) malloc(sizeof(jmp_buf) * SWIG_MAX_RT_STACK);
    if ((SWIG_exc.code = setjmp(SWIG_rt_env))) {
      // deallocate C++ exception
      if (setjmp(SWIG_rt_env) == 0) {
        SWIG_rt_stack_push();
        SWIG_exc.handled = 1;
        longjmp(SWIG_cpp_back_env, 1);
      }
      SWIG_terminate();
    }
  }

  // TODO: check for stack overflow
  memcpy(SWIG_rt_stack_ptr, SWIG_rt_env, sizeof(SWIG_rt_env));
  SWIG_rt_stack_ptr++;
}

SWIGINTERN void SWIG_rt_stack_pop() {
  if (SWIG_rt_stack_ptr == SWIG_rt_stack_base)
    return;
  SWIG_rt_stack_ptr--;
  memcpy(SWIG_rt_env, SWIG_rt_stack_ptr, sizeof(SWIG_rt_env));
}

SWIGINTERN void SWIG_cleanup() {
  if (SWIG_rt_stack_base)
    free(SWIG_rt_stack_base);
  if (SWIG_exc.msg)
   free(SWIG_exc.msg);
  if (SWIG_exc.klass) {
    free(SWIG_exc.klass);
  }
}

#ifdef __cplusplus
extern "C" {
#endif

SWIGEXPORTC void SWIG_rt_try() {
  SWIG_rt_stack_push();
}

SWIGEXPORTC int SWIG_rt_catch(const char *type) {
  int result = 0;
  if (!type || (strcmp("SWIG_AnyException", type) == 0)) {
    result = 1;
  }
  else if (SWIG_exc.klass) {
    result = strcmp(SWIG_exc.klass->symname, type) == 0 || SWIG_exc.klass->derives_from(type);
  }
  if (result) {
    SWIG_rt_stack_pop();
    SWIG_exc.handled = 1;
  }
  return result;
}

SWIGEXPORTC void SWIG_rt_throw(SwigObj *klass, const char *msg) {
  if (SWIG_exc.msg) {
    free(SWIG_exc.msg);
    SWIG_exc.msg = (char *) 0;
  }
  if (msg) {
    SWIG_exc.msg = (char *) malloc(strlen(msg) + 1);
    strcpy(SWIG_exc.msg, msg);
  }
  SWIG_exc.klass = klass;
  SWIG_exc.handled = 0;
  longjmp(SWIG_rt_env, 1);
}

SWIGEXPORTC void SWIG_rt_unhandled() {
  if (SWIG_exc.msg) { 
    free(SWIG_exc.msg);
    SWIG_exc.msg = 0;
  }
  SWIG_rt_stack_pop();
  longjmp(SWIG_rt_env, SWIG_exc.code);
}

SWIGEXPORTC void SWIG_rt_endtry() {
  if (SWIG_exc.handled) {
    if (setjmp(SWIG_rt_env) == 0) {
      SWIG_rt_stack_push();
      longjmp(SWIG_cpp_back_env, 1);
    }
  }
  else {
    SWIG_rt_stack_pop();  // pop the SWIG_try context
  }
}

SWIGEXPORTC int SWIG_exit(int code) {
  SWIG_cleanup();
  exit(code);
}

#ifdef __cplusplus
}
#endif

SWIGINTERN void SWIG_terminate() {
  fprintf(stderr, "Unhandled exception: %s\n%s\nExitting...\n", 
    typeid(*SWIG_exc.klass).name(),
    SWIG_exc.msg ? SWIG_exc.msg : "");
  SWIG_exit(SWIG_exc.code);
}

#define SWIG_CThrowException(klass, msg) \
  if (setjmp(SWIG_cpp_back_env) == 0) \
    SWIG_rt_throw((SwigObj *) klass, msg);
%}

%insert("cheader") %{
// special value indicating any type of exception like 'catch(...)'
#define SWIG_AnyException "SWIG_AnyException"

#include <setjmp.h>

SWIGIMPORT jmp_buf SWIG_rt_env;

SWIGIMPORT struct SWIG_exc_struct {
  int code;
  char *msg;
  SwigObj *klass;
} SWIG_exc;

SWIGIMPORT void SWIG_rt_try();
SWIGIMPORT int SWIG_rt_catch(const char *type);
SWIGIMPORT void SWIG_rt_throw(SwigObj *klass, const char * msg);
SWIGIMPORT int SWIG_rt_unhandled();
SWIGIMPORT void SWIG_rt_endtry();
SWIGIMPORT int SWIG_exit(int code);

#define SWIG_try \
  SWIG_rt_try(); \
  if ((SWIG_exc.code = setjmp(SWIG_rt_env)) == 0) 
#define SWIG_catch(type) else if (SWIG_rt_catch(#type))
#define SWIG_throw(klass) SWIG_rt_throw((SwigObj *) klass, 0);
#define SWIG_throw_msg(klass, msg) SWIG_rt_throw((SwigObj *) klass, msg);
#define SWIG_endtry else SWIG_rt_unhandled(); SWIG_rt_endtry();

%}