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55 lines
1.8 KiB
55 lines
1.8 KiB
import os
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def parse_distributions_h(ffi, inc_dir):
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"""
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Parse distributions.h located in inc_dir for CFFI, filling in the ffi.cdef
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Read the function declarations without the "#define ..." macros that will
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be filled in when loading the library.
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"""
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with open(os.path.join(inc_dir, 'random', 'bitgen.h')) as fid:
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s = []
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for line in fid:
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# massage the include file
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if line.strip().startswith('#'):
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continue
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s.append(line)
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ffi.cdef('\n'.join(s))
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with open(os.path.join(inc_dir, 'random', 'distributions.h')) as fid:
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s = []
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in_skip = 0
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ignoring = False
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for line in fid:
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# check for and remove extern "C" guards
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if ignoring:
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if line.strip().startswith('#endif'):
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ignoring = False
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continue
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if line.strip().startswith('#ifdef __cplusplus'):
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ignoring = True
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# massage the include file
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if line.strip().startswith('#'):
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continue
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# skip any inlined function definition
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# which starts with 'static NPY_INLINE xxx(...) {'
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# and ends with a closing '}'
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if line.strip().startswith('static NPY_INLINE'):
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in_skip += line.count('{')
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continue
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elif in_skip > 0:
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in_skip += line.count('{')
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in_skip -= line.count('}')
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continue
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# replace defines with their value or remove them
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line = line.replace('DECLDIR', '')
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line = line.replace('NPY_INLINE', '')
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line = line.replace('RAND_INT_TYPE', 'int64_t')
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s.append(line)
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ffi.cdef('\n'.join(s))
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