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#! make_templates.py
"""Parse a C++ input and try to generate SWIG %template declarations so that this
template <typename T1, typename T2>
DoubleVect
OnBitProjSimilarity(const T1& bv1,const T2& bv2);
becomes this
%template(OnBitProjSimilarityEBV) OnBitProjSimilarity<ExplicitBitVect,ExplicitBitVect>;
"""
from __future__ import print_function
import re
template_match = re.compile(r"""template\s*\<(.+)\>\s*.*\s+(\w+)\s*\(.*""")
def make_entry(name, suffix, template_types):
template_part = '<' + ','.join(template_types) + '>'
return '%template(' + name + suffix + ') ' + name + template_part + ';'
def handle_template_line(template_line, suffix, template_type):
# print template_line
match = template_match.search(template_line)
types = match.group(1)
name = match.group(2)
template_types = len(types.split(',')) * [template_type]
print(make_entry(name, suffix, template_types))
def find_declarations(file_name, suffix, template_type):
f = open(file_name)
in_template = False
template_line = ''
for line in f:
if in_template:
template_line += ' ' + line.strip()
if line.find(')') >= 0:
handle_template_line(template_line, suffix, template_type)
in_template = False
elif line.strip().startswith('template'):
in_template = True
template_line = line.strip()
f.close()
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