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63 lines
1.5 KiB
63 lines
1.5 KiB
#------------------------------------------------------------------------------
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# pycparser: c-to-c.py
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#
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# Example of using pycparser.c_generator, serving as a simplistic translator
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# from C to AST and back to C.
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#
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# Eli Bendersky [https://eli.thegreenplace.net/]
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# License: BSD
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#------------------------------------------------------------------------------
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from __future__ import print_function
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import sys
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# This is not required if you've installed pycparser into
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# your site-packages/ with setup.py
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#
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sys.path.extend(['.', '..'])
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from pycparser import parse_file, c_parser, c_generator
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def translate_to_c(filename):
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""" Simply use the c_generator module to emit a parsed AST.
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"""
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ast = parse_file(filename, use_cpp=True)
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generator = c_generator.CGenerator()
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print(generator.visit(ast))
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def _zz_test_translate():
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# internal use
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src = r'''
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void f(char * restrict joe){}
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int main(void)
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{
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unsigned int long k = 4;
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int p = - - k;
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return 0;
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}
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'''
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parser = c_parser.CParser()
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ast = parser.parse(src)
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ast.show()
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generator = c_generator.CGenerator()
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print(generator.visit(ast))
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# tracing the generator for debugging
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#~ import trace
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#~ tr = trace.Trace(countcallers=1)
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#~ tr.runfunc(generator.visit, ast)
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#~ tr.results().write_results()
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#------------------------------------------------------------------------------
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if __name__ == "__main__":
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#_zz_test_translate()
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if len(sys.argv) > 1:
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translate_to_c(sys.argv[1])
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else:
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print("Please provide a filename as argument")
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