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Add function pointer parse. #67

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Merged
virtuald merged 1 commit into from
Apr 10, 2021
Merged

Add function pointer parse. #67

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18 changes: 18 additions & 0 deletions CppHeaderParser/CppHeaderParser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2375,13 +2375,31 @@ def _evaluate_method_stack(self):
self.stack = []
self.stmtTokens = []

_function_point_typedef_format = re.compile(r".*?\(.*?\*(.*?)\).*?\(.*?\).*?")

def _function_point_typedef_parse(self, stack):
idx = stack.index("typedef")
expression = "".join(stack[idx + 1 :])
m = self._function_point_typedef_format.match(expression)
if m is None:
return {}

name = m.group(1)
s = " ".join([i for i in stack if i != name])
r = {"name": name, "raw": s, "type": s}
return r

def _parse_typedef(self, stack, namespace=""):
if not stack or "typedef" not in stack:
return
stack = list(stack) # copy just to be safe
if stack[-1] == ";":
stack.pop()

r = self._function_point_typedef_parse(stack)
if len(r) == 3:
return r

while stack and stack[-1].isdigit():
stack.pop() # throw away array size for now

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18 changes: 18 additions & 0 deletions test/test_CppHeaderParser.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4038,5 +4038,23 @@ def test_fn(self):
self.assertEqual(m["parameters"][0]["type"], "typename TP<D >::S")


class FunctionPointerParse(unittest.TestCase):
def setUp(self):
self.cppHeader = CppHeaderParser.CppHeader(
"""
typedef int U32;
typedef unsigned int( * p )(int, int);
typedef int( * mmmmp )(int, int) ;
""",
"string",
)

def test_fn(self):
c = self.cppHeader
self.assertEqual(c.typedefs["U32"], "int")
self.assertEqual(c.typedefs["p"], "typedef unsigned int ( * ) ( int , int )")
self.assertEqual(c.typedefs["mmmmp"], "typedef int ( * ) ( int , int )")


if __name__ == "__main__":
unittest.main()