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throw helpful errors when params supplied are not ctype pointers (#122)

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Richard Smith 2024-03-03 11:48:09 +00:00 • committed by GitHub
parent 33dce4ecfd
commit 3744686f7b
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3 changed files with 77 additions and 19 deletions
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45
pyray/__init__.py
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@ -47,32 +47,43 @@ def makefunc(a):
for (c_arg, arg) in zip(ffi.typeof(a).args, args):
# print("arg:",str(arg), "c_arg.kind:", c_arg.kind, "c_arg:", c_arg, "type(arg):",str(type(arg)))
if c_arg.kind == 'pointer':
if type(arg) == str:
if type(arg) is str:
arg = arg.encode('utf-8')
elif type(arg) is bool:
arg = ffi.new("bool *", arg)
elif type(arg) is int:
arg = ffi.new("int *", arg)
elif type(arg) is float:
arg = ffi.new("float *", arg)
# if c_arg is a 'char *' not a 'const char *' then we ought to raise here because its an out
# parameter and user should supply a ctype pointer, but cffi cant detect const
# so we would have to get the info from raylib.json
elif type(arg) is list and str(c_arg) == "<ctype 'char * *'>":
arg = [ffi.new("char[]", x.encode('utf-8')) for x in arg]
elif str(type(arg)) == "<class '_cffi_backend.__CDataOwn'>" and "*" not in str(arg): # CPython
arg = ffi.addressof(arg)
elif str(type(arg)) == "<class '_cffi_backend._CDataBase'>" and "*" not in str(arg): # Pypy
elif is_cdata(arg) and "*" not in str(arg):
arg = ffi.addressof(arg)
elif arg is None:
arg = ffi.NULL
elif not is_cdata(arg):
if str(c_arg) == "<ctype '_Bool *'>":
raise TypeError(
"Argument must be a ctype bool, please create one with: pyray.ffi.new('bool *', True)")
elif str(c_arg) == "<ctype 'int *'>":
raise TypeError(
"Argument must be a ctype int, please create one with: pyray.ffi.new('int *', 1)")
elif str(c_arg) == "<ctype 'float *'>":
raise TypeError(
"Argument must be a ctype float, please create one with: pyray.ffi.new('float *', 1.0)")
modified_args.append(arg)
result = a(*modified_args)
if result is None:
return
if str(type(result)) == "<class '_cffi_backend._CDataBase'>" and str(result).startswith("<cdata 'char *'"):
elif is_cdata(result) and str(result).startswith("<cdata 'char *'"):
if str(result) == "<cdata 'char *' NULL>":
result = ""
return ""
else:
result = ffi.string(result).decode('utf-8')
return result
return ffi.string(result).decode('utf-8')
else:
return result
# apparently pypy and cpython produce different types so check for both
def is_cdata(arg):
return str(type(arg)) == "<class '_cffi_backend.__CDataOwn'>" or str(
type(arg)) == "<class '_cffi_backend._CDataBase'>"
return func
@ -99,20 +110,16 @@ def makeStructHelper(struct):
for name, attr in getmembers(rl):
# print(name, attr)
#print(name, dir(attr))
uname = inflection.underscore(name).replace('3_d', '_3d').replace('2_d', '_2d')
if isbuiltin(attr) or str(type(attr)) == "<class '_cffi_backend.__FFIFunctionWrapper'>" or str(
type(attr)) == "<class '_cffi_backend._CDataBase'>":
# print(attr.__call__)
# print(attr.__doc__)
# print(attr.__text_signature__)
# print(dir(attr))
# print(dir(attr.__repr__))
f = makefunc(attr)
setattr(current_module, uname, f)
# def wrap(*args):
# print("call to ",attr)
# setattr(PyRay, uname, lambda *args: print("call to ",attr))
else:
setattr(current_module, name, attr)