Both function annotations and variable annotations are turned on using the
"python:annotations" feature. Example:
%feature("python:annotations", "c");
struct V {
float val;
};
The generated code contains a variable annotation containing the C float type:
class V(object):
val: "float" = property(_example.V_val_get, _example.V_val_set)
...
Python 3.5 and earlier do not support variable annotations, so variable
annotations can be turned off with a "python:annotations:novar" feature flag.
Example turning on function annotations but not variable annotations globally:
%feature("python:annotations", "c");
%feature("python:annotations:novar");
or via the command line:
-features python:annotations=c,python:annotations:novar
Closes #1951
24 lines
936 B
Python
24 lines
936 B
Python
import sys
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# Variable annotations for properties is only supported in python-3.6 and later (PEP 526)
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if sys.version_info[0:2] >= (3, 6):
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from python_annotations_variable_c import *
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# No SWIG __annotations__ support with -builtin or -fastproxy
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annotations_supported = not(is_python_builtin() or is_python_fastproxy())
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if annotations_supported:
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ts = TemplateShort()
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anno = ts.__annotations__
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if anno != {'member_variable': 'int'}:
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raise RuntimeError("annotations mismatch: {}".format(anno))
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ts = StructWithVar()
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anno = ts.__annotations__
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if anno != {'member_variable': 'int'}:
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raise RuntimeError("annotations mismatch: {}".format(anno))
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ts = StructWithVarNotAnnotated()
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if getattr(ts, "__annotations__", None) != None:
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anno = ts.__annotations__
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raise RuntimeError("annotations mismatch: {}".format(anno))
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