upm: add facility for exception handling in upm

We add a new src/upm_exception.i interface file for SWIG to catch
common exceptions and propagate them through SWIG.

src/upm.i is modified to include this interface file, so all UPM
drivers have it.

In theory, this should be language agnostic - if the target language
supports exceptions, then it should just work.

Signed-off-by: Jon Trulson <jtrulson@ics.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>
This commit is contained in:
Jon Trulson 2015-08-07 13:27:19 -06:00 committed by Mihai Tudor Panu
parent 58c800e246
commit 84f795e453
2 changed files with 66 additions and 0 deletions

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@ -1,5 +1,6 @@
%include "std_string.i"
%include "stdint.i"
%include "upm_exception.i"
%typemap(out) mraa_result_t = int;

65
src/upm_exception.i Normal file
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@ -0,0 +1,65 @@
/* Standardized exception handling for UPM
*
* catch blocks should be listed in order from most specific to least
* specific.
*/
%include "exception.i"
%exception {
try {
$action
} catch (std::invalid_argument& e) {
std::string s1("UPM Invalid Argument: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_ValueError, s1.c_str());
} catch (std::domain_error& e) {
std::string s1("UPM Domain Error: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_ValueError, s1.c_str() );
} catch (std::overflow_error& e) {
std::string s1("UPM Overflow Error: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_OverflowError, s1.c_str() );
} catch (std::out_of_range& e) {
std::string s1("UPM Out of Range: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_IndexError, s1.c_str() );
} catch (std::length_error& e) {
std::string s1("UPM Length Error: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_IndexError, s1.c_str() );
} catch (std::logic_error& e) {
std::string s1("UPM Logic Error: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_RuntimeError, s1.c_str() );
} catch (std::bad_alloc& e) {
/* for an allocation exception, don't try to create a string... */
SWIG_exception(SWIG_MemoryError, e.what() );
} catch (std::runtime_error& e) {
/* catch other std::runtime_error exceptions here */
std::string s1("UPM Runtime Error: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_RuntimeError, s1.c_str());
} catch (std::exception& e) {
/* catch other std::exceptions here */
std::string s1("UPM Error: "), s2(e.what());
s1 = s1 + s2;
SWIG_exception(SWIG_SystemError, s1.c_str() );
} catch (...) {
/* catch everything else */
SWIG_exception(SWIG_UnknownError, "UPM Unknown exception" );
}
}