109 lines
3.3 KiB
Python
109 lines
3.3 KiB
Python
#!/usr/bin/env python
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# This pre-processor parses provided objects' c files for
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# MP_REGISTER_MODULE(module_name, obj_module, enabled_define)
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# These are used to generate a header with the required entries for
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# "mp_rom_map_elem_t mp_builtin_module_table[]" in py/objmodule.c
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from __future__ import print_function
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import re
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import io
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import os
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import argparse
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pattern = re.compile(
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r"[\n;]\s*MP_REGISTER_MODULE\((.*?),\s*(.*?),\s*(.*?)\);",
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flags=re.DOTALL
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)
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def find_c_file(obj_file, vpath):
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""" Search vpaths for the c file that matches the provided object_file.
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:param str obj_file: object file to find the matching c file for
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:param List[str] vpath: List of base paths, similar to gcc vpath
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:return: str path to c file or None
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"""
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c_file = None
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relative_c_file = os.path.splitext(obj_file)[0] + ".c"
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relative_c_file = relative_c_file.lstrip('/\\')
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for p in vpath:
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possible_c_file = os.path.join(p, relative_c_file)
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if os.path.exists(possible_c_file):
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c_file = possible_c_file
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break
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return c_file
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def find_module_registrations(c_file):
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""" Find any MP_REGISTER_MODULE definitions in the provided c file.
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:param str c_file: path to c file to check
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:return: List[(module_name, obj_module, enabled_define)]
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"""
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global pattern
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if c_file is None:
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# No c file to match the object file, skip
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return set()
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with io.open(c_file, encoding='utf-8') as c_file_obj:
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return set(re.findall(pattern, c_file_obj.read()))
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def generate_module_table_header(modules):
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""" Generate header with module table entries for builtin modules.
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:param List[(module_name, obj_module, enabled_define)] modules: module defs
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:return: None
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"""
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# Print header file for all external modules.
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mod_defs = []
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print("// Automatically generated by makemoduledefs.py.\n")
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for module_name, obj_module, enabled_define in modules:
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mod_def = "MODULE_DEF_{}".format(module_name.upper())
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mod_defs.append(mod_def)
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print((
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"#if ({enabled_define})\n"
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" extern const struct _mp_obj_module_t {obj_module};\n"
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" #define {mod_def} {{ MP_ROM_QSTR({module_name}), MP_ROM_PTR(&{obj_module}) }},\n"
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"#else\n"
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" #define {mod_def}\n"
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"#endif\n"
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).format(module_name=module_name, obj_module=obj_module,
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enabled_define=enabled_define, mod_def=mod_def)
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)
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print("\n#define MICROPY_REGISTERED_MODULES \\")
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for mod_def in mod_defs:
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print(" {mod_def} \\".format(mod_def=mod_def))
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print("// MICROPY_REGISTERED_MODULES")
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def main():
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parser = argparse.ArgumentParser()
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parser.add_argument("--vpath", default=".",
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help="comma separated list of folders to search for c files in")
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parser.add_argument("files", nargs="*",
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help="list of c files to search")
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args = parser.parse_args()
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vpath = [p.strip() for p in args.vpath.split(',')]
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modules = set()
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for obj_file in args.files:
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c_file = find_c_file(obj_file, vpath)
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modules |= find_module_registrations(c_file)
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generate_module_table_header(sorted(modules))
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if __name__ == '__main__':
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main()
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