[SyneRBI/SIRF] swig: Handle wrapper (Issue #1384)

Casper da Costa-Luis

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Mar 23, 2026, 11:26:09 AMMar 23

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casperdcl created an issue (SyneRBI/SIRF#1384)

I'd recommend an intermediate wrapper which does:

check_status
typed data extraction
destruction

which can be used e.g. as:

 def get_STIR_version_string():
     """Returns STIR engine version as Python str."""
-    handle = pystir.cSTIR_STIR_version_string()
-    check_status(handle)
-    version = pyiutil.charDataFromHandle(handle)
-    pyiutil.deleteDataHandle(handle)
-    return version
+    handle = Handle(pystir.cSTIR_STIR_version_string())
+    return str(handle)

Implementation

class Handle:
    def __init__(self, handle, check_stack=None):
        check_status(handle, stack=check_stack)
        self.handle = handle

    def __int__(self):
        return pyiutil.intDataFromHandle(self.handle)

    def __bool__(self):
        return pyiutil.boolDataFromHandle(self.handle)

    def __float__(self, double=False):
        return (pyiutil.doubleDataFromHandle if double else pyiutil.floatDataFromHandle)(self.handle)

    def __str__(self):
        return pyiutil.charDataFromHandle(self.handle)

    def __abs__(self):
        return pyiutil.size_tDataFromHandle(self.handle)

    def __complex__(self, double=False):
        if double:
            return pyiutil.doubleReDataFromHandle(self.handle) + 1.j * pyiutil.doubleImDataFromHandle(self.handle)
        return pyiutil.floatReDataFromHandle(self.handle) + 1.j * pyiutil.floatImDataFromHandle(self.handle)

    def __del__(self):
        if self.handle is not None:
            pyiutil.deleteDataHandle(self.handle)

Related to #1377

/CC @evgueni-ovtchinnikov @paskino @KrisThielemans

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Kris Thielemans

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Mar 23, 2026, 11:50:41 AMMar 23

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KrisThielemans left a comment (SyneRBI/SIRF#1384)

sounds cool

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Casper da Costa-Luis

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Mar 27, 2026, 1:11:46 PM (11 days ago) Mar 27

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Closed #1384 as completed via fdcd949.

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