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from c_analyzer_common import files
from c_analyzer_common.info import UNKNOWN
from c_parser import declarations
# XXX need tests:
# * find_symbol()
def find_symbol(name, dirnames, *,
_perfilecache,
_iter_files=files.iter_files_by_suffix,
**kwargs
):
"""Return (filename, funcname, vartype) for the matching Symbol."""
filenames = _iter_files(dirnames, ('.c', '.h'))
return _find_symbol(name, filenames, _perfilecache, **kwargs)
def _get_symbols(filename, *,
_iter_variables=declarations.iter_variables,
):
"""Return the list of Symbols found in the given file."""
symbols = {}
for funcname, name, vartype in _iter_variables(filename):
if not funcname:
continue
try:
instances = symbols[name]
except KeyError:
instances = symbols[name] = []
instances.append((funcname, vartype))
return symbols
def _find_symbol(name, filenames, _perfilecache, *,
_get_local_symbols=_get_symbols,
):
for filename in filenames:
try:
symbols = _perfilecache[filename]
except KeyError:
symbols = _perfilecache[filename] = _get_local_symbols(filename)
try:
instances = symbols[name]
except KeyError:
continue
funcname, vartype = instances.pop(0)
if not instances:
symbols.pop(name)
return filename, funcname, vartype
else:
return UNKNOWN, UNKNOWN, UNKNOWN
def iter_symbols():
raise NotImplementedError
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