def visit_rprimitive(self, left: RPrimitive) -> bool:
right = self.right
if is_bool_rprimitive(left):
if is_int_rprimitive(right):
return True
elif is_bit_rprimitive(left):
if is_bool_rprimitive(right) or is_int_rprimitive(right):
return True
elif is_short_int_rprimitive(left):
if is_int_rprimitive(right):
return True
return left is right
def __init__(self, src: Value, line: int = -1) -> None:
super().__init__(line)
self.src = src
self.type = object_rprimitive
# When we box None and bool values, we produce a borrowed result
if is_none_rprimitive(self.src.type) or is_bool_rprimitive(self.src.type):
self.is_borrowed = True
def unary_op(self, lreg: Value, expr_op: str, line: int) -> Value:
if is_bool_rprimitive(lreg.type) and expr_op == 'not':
return self.unary_not(lreg, line)
call_c_ops_candidates = c_unary_ops.get(expr_op, [])
target = self.matching_call_c(call_c_ops_candidates, [lreg], line)
assert target, 'Unsupported unary operation: %s' % expr_op
return target
def emit_box(self,
src: str,
dest: str,
typ: RType,
declare_dest: bool = False,
can_borrow: bool = False) -> None:
"""Emit code for boxing a value of given type.
Generate a simple assignment if no boxing is needed.
The source reference count is stolen for the result (no need to decref afterwards).
"""
# TODO: Always generate a new reference (if a reference type)
if declare_dest:
declaration = 'PyObject *'
else:
declaration = ''
if is_int_rprimitive(typ) or is_short_int_rprimitive(typ):
# Steal the existing reference if it exists.
self.emit_line('{}{} = CPyTagged_StealAsObject({});'.format(
declaration, dest, src))
elif is_bool_rprimitive(typ):
# N.B: bool is special cased to produce a borrowed value
# after boxing, so we don't need to increment the refcount
# when this comes directly from a Box op.
self.emit_lines('{}{} = {} ? Py_True : Py_False;'.format(
declaration, dest, src))
if not can_borrow:
self.emit_inc_ref(dest, object_rprimitive)
elif is_none_rprimitive(typ):
# N.B: None is special cased to produce a borrowed value
# after boxing, so we don't need to increment the refcount
# when this comes directly from a Box op.
self.emit_lines('{}{} = Py_None;'.format(declaration, dest))
if not can_borrow:
self.emit_inc_ref(dest, object_rprimitive)
elif isinstance(typ, RTuple):
self.declare_tuple_struct(typ)
self.emit_line('{}{} = PyTuple_New({});'.format(
declaration, dest, len(typ.types)))
self.emit_line('if (unlikely({} == NULL))'.format(dest))
self.emit_line(' CPyError_OutOfMemory();')
# TODO: Fail if dest is None
for i in range(0, len(typ.types)):
if not typ.is_unboxed:
self.emit_line('PyTuple_SET_ITEM({}, {}, {}.f{}'.format(
dest, i, src, i))
else:
inner_name = self.temp_name()
self.emit_box('{}.f{}'.format(src, i),
inner_name,
typ.types[i],
declare_dest=True)
self.emit_line('PyTuple_SET_ITEM({}, {}, {});'.format(
dest, i, inner_name))
else:
assert not typ.is_unboxed
# Type is boxed -- trivially just assign.
self.emit_line('{}{} = {};'.format(declaration, dest, src))
def compare_tuples(self,
lhs: Value,
rhs: Value,
op: str,
line: int = -1) -> Value:
"""Compare two tuples item by item"""
# type cast to pass mypy check
assert isinstance(lhs.type, RTuple) and isinstance(rhs.type, RTuple)
equal = True if op == '==' else False
result = self.alloc_temp(bool_rprimitive)
# empty tuples
if len(lhs.type.types) == 0 and len(rhs.type.types) == 0:
self.add(
Assign(result,
self.true() if equal else self.false(), line))
return result
length = len(lhs.type.types)
false_assign, true_assign, out = BasicBlock(), BasicBlock(
), BasicBlock()
check_blocks = [BasicBlock() for i in range(length)]
lhs_items = [self.add(TupleGet(lhs, i, line)) for i in range(length)]
rhs_items = [self.add(TupleGet(rhs, i, line)) for i in range(length)]
if equal:
early_stop, final = false_assign, true_assign
else:
early_stop, final = true_assign, false_assign
for i in range(len(lhs.type.types)):
if i != 0:
self.activate_block(check_blocks[i])
lhs_item = lhs_items[i]
rhs_item = rhs_items[i]
compare = self.binary_op(lhs_item, rhs_item, op, line)
# Cast to bool if necessary since most types uses comparison returning a object type
# See generic_ops.py for more information
if not is_bool_rprimitive(compare.type):
compare = self.call_c(bool_op, [compare], line)
if i < len(lhs.type.types) - 1:
branch = Branch(compare, early_stop, check_blocks[i + 1],
Branch.BOOL_EXPR)
else:
branch = Branch(compare, early_stop, final, Branch.BOOL_EXPR)
# if op is ==, we branch on false, else branch on true
branch.negated = equal
self.add(branch)
self.activate_block(false_assign)
self.add(Assign(result, self.false(), line))
self.goto(out)
self.activate_block(true_assign)
self.add(Assign(result, self.true(), line))
self.goto_and_activate(out)
return result
def generate_bool_wrapper(cl: ClassIR, fn: FuncIR, emitter: Emitter) -> str:
"""Generates a wrapper for native __bool__ methods."""
name = '{}{}{}'.format(DUNDER_PREFIX, fn.name, cl.name_prefix(emitter.names))
emitter.emit_line('static int {name}(PyObject *self) {{'.format(
name=name
))
emitter.emit_line('{}val = {}{}(self);'.format(emitter.ctype_spaced(fn.ret_type),
NATIVE_PREFIX,
fn.cname(emitter.names)))
emitter.emit_error_check('val', fn.ret_type, 'return -1;')
# This wouldn't be that hard to fix but it seems unimportant and
# getting error handling and unboxing right would be fiddly. (And
# way easier to do in IR!)
assert is_bool_rprimitive(fn.ret_type), "Only bool return supported for __bool__"
emitter.emit_line('return val;')
emitter.emit_line('}')
return name
def generate_contains_wrapper(cl: ClassIR, fn: FuncIR, emitter: Emitter) -> str:
"""Generates a wrapper for a native __contains__ method."""
name = '{}{}{}'.format(DUNDER_PREFIX, fn.name, cl.name_prefix(emitter.names))
emitter.emit_line(
'static int {name}(PyObject *self, PyObject *obj_item) {{'.
format(name=name))
generate_arg_check('item', fn.args[1].type, emitter, ReturnHandler('-1'))
emitter.emit_line('{}val = {}{}(self, arg_item);'.format(emitter.ctype_spaced(fn.ret_type),
NATIVE_PREFIX,
fn.cname(emitter.names)))
emitter.emit_error_check('val', fn.ret_type, 'return -1;')
if is_bool_rprimitive(fn.ret_type):
emitter.emit_line('return val;')
else:
emitter.emit_line('int boolval = PyObject_IsTrue(val);')
emitter.emit_dec_ref('val', fn.ret_type)
emitter.emit_line('return boolval;')
emitter.emit_line('}')
return name
def visit_rprimitive(self, left: RPrimitive) -> bool:
if is_bool_rprimitive(left) and is_int_rprimitive(self.right):
return True
if is_short_int_rprimitive(left) and is_int_rprimitive(self.right):
return True
return left is self.right
def emit_unbox(self,
src: str,
dest: str,
typ: RType,
custom_failure: Optional[str] = None,
declare_dest: bool = False,
borrow: bool = False,
optional: bool = False) -> None:
"""Emit code for unboxing a value of given type (from PyObject *).
Evaluate C code in 'failure' if the value has an incompatible type.
Always generate a new reference.
Args:
src: Name of source C variable
dest: Name of target C variable
typ: Type of value
failure: What happens on error
declare_dest: If True, also declare the variable 'dest'
borrow: If True, create a borrowed reference
"""
# TODO: Verify refcount handling.
raise_exc = 'CPy_TypeError("{}", {});'.format(self.pretty_name(typ),
src)
if custom_failure is not None:
failure = [raise_exc, custom_failure]
else:
failure = [raise_exc, '%s = %s;' % (dest, self.c_error_value(typ))]
if is_int_rprimitive(typ) or is_short_int_rprimitive(typ):
if declare_dest:
self.emit_line('CPyTagged {};'.format(dest))
self.emit_arg_check(src, dest, typ,
'(likely(PyLong_Check({})))'.format(src),
optional)
if borrow:
self.emit_line(
' {} = CPyTagged_BorrowFromObject({});'.format(
dest, src))
else:
self.emit_line(' {} = CPyTagged_FromObject({});'.format(
dest, src))
self.emit_line('else {')
self.emit_lines(*failure)
self.emit_line('}')
elif is_bool_rprimitive(typ) or is_bit_rprimitive(typ):
# Whether we are borrowing or not makes no difference.
if declare_dest:
self.emit_line('char {};'.format(dest))
self.emit_arg_check(src, dest, typ,
'(unlikely(!PyBool_Check({}))) {{'.format(src),
optional)
self.emit_lines(*failure)
self.emit_line('} else')
conversion = '{} == Py_True'.format(src)
self.emit_line(' {} = {};'.format(dest, conversion))
elif is_none_rprimitive(typ):
# Whether we are borrowing or not makes no difference.
if declare_dest:
self.emit_line('char {};'.format(dest))
self.emit_arg_check(src, dest, typ,
'(unlikely({} != Py_None)) {{'.format(src),
optional)
self.emit_lines(*failure)
self.emit_line('} else')
self.emit_line(' {} = 1;'.format(dest))
elif isinstance(typ, RTuple):
self.declare_tuple_struct(typ)
if declare_dest:
self.emit_line('{} {};'.format(self.ctype(typ), dest))
# HACK: The error handling for unboxing tuples is busted
# and instead of fixing it I am just wrapping it in the
# cast code which I think is right. This is not good.
if optional:
self.emit_line('if ({} == NULL) {{'.format(src))
self.emit_line('{} = {};'.format(dest,
self.c_error_value(typ)))
self.emit_line('} else {')
cast_temp = self.temp_name()
self.emit_tuple_cast(src,
cast_temp,
typ,
declare_dest=True,
err='',
src_type=None)
self.emit_line('if (unlikely({} == NULL)) {{'.format(cast_temp))
# self.emit_arg_check(src, dest, typ,
# '(!PyTuple_Check({}) || PyTuple_Size({}) != {}) {{'.format(
# src, src, len(typ.types)), optional)
self.emit_lines(*failure) # TODO: Decrease refcount?
self.emit_line('} else {')
if not typ.types:
self.emit_line('{}.empty_struct_error_flag = 0;'.format(dest))
for i, item_type in enumerate(typ.types):
temp = self.temp_name()
# emit_tuple_cast above checks the size, so this should not fail
self.emit_line(
'PyObject *{} = PyTuple_GET_ITEM({}, {});'.format(
temp, src, i))
temp2 = self.temp_name()
# Unbox or check the item.
if item_type.is_unboxed:
self.emit_unbox(temp,
temp2,
item_type,
custom_failure,
declare_dest=True,
borrow=borrow)
else:
if not borrow:
self.emit_inc_ref(temp, object_rprimitive)
self.emit_cast(temp, temp2, item_type, declare_dest=True)
self.emit_line('{}.f{} = {};'.format(dest, i, temp2))
self.emit_line('}')
if optional:
self.emit_line('}')
else:
assert False, 'Unboxing not implemented: %s' % typ
def emit_cast(self,
src: str,
dest: str,
typ: RType,
declare_dest: bool = False,
custom_message: Optional[str] = None,
optional: bool = False,
src_type: Optional[RType] = None,
likely: bool = True) -> None:
"""Emit code for casting a value of given type.
Somewhat strangely, this supports unboxed types but only
operates on boxed versions. This is necessary to properly
handle types such as Optional[int] in compatibility glue.
Assign NULL (error value) to dest if the value has an incompatible type.
Always copy/steal the reference in src.
Args:
src: Name of source C variable
dest: Name of target C variable
typ: Type of value
declare_dest: If True, also declare the variable 'dest'
likely: If the cast is likely to succeed (can be False for unions)
"""
if custom_message is not None:
err = custom_message
else:
err = 'CPy_TypeError("{}", {});'.format(self.pretty_name(typ), src)
# Special case casting *from* optional
if src_type and is_optional_type(
src_type) and not is_object_rprimitive(typ):
value_type = optional_value_type(src_type)
assert value_type is not None
if is_same_type(value_type, typ):
if declare_dest:
self.emit_line('PyObject *{};'.format(dest))
check = '({} != Py_None)'
if likely:
check = '(likely{})'.format(check)
self.emit_arg_check(src, dest, typ, check.format(src),
optional)
self.emit_lines(' {} = {};'.format(dest, src), 'else {',
err, '{} = NULL;'.format(dest), '}')
return
# TODO: Verify refcount handling.
if (is_list_rprimitive(typ) or is_dict_rprimitive(typ)
or is_set_rprimitive(typ) or is_float_rprimitive(typ)
or is_str_rprimitive(typ) or is_int_rprimitive(typ)
or is_bool_rprimitive(typ)):
if declare_dest:
self.emit_line('PyObject *{};'.format(dest))
if is_list_rprimitive(typ):
prefix = 'PyList'
elif is_dict_rprimitive(typ):
prefix = 'PyDict'
elif is_set_rprimitive(typ):
prefix = 'PySet'
elif is_float_rprimitive(typ):
prefix = 'CPyFloat'
elif is_str_rprimitive(typ):
prefix = 'PyUnicode'
elif is_int_rprimitive(typ):
prefix = 'PyLong'
elif is_bool_rprimitive(typ) or is_bit_rprimitive(typ):
prefix = 'PyBool'
else:
assert False, 'unexpected primitive type'
check = '({}_Check({}))'
if likely:
check = '(likely{})'.format(check)
self.emit_arg_check(src, dest, typ, check.format(prefix, src),
optional)
self.emit_lines(' {} = {};'.format(dest, src), 'else {', err,
'{} = NULL;'.format(dest), '}')
elif is_tuple_rprimitive(typ):
if declare_dest:
self.emit_line('{} {};'.format(self.ctype(typ), dest))
check = '(PyTuple_Check({}))'
if likely:
check = '(likely{})'.format(check)
self.emit_arg_check(src, dest, typ, check.format(src), optional)
self.emit_lines(' {} = {};'.format(dest, src), 'else {', err,
'{} = NULL;'.format(dest), '}')
elif isinstance(typ, RInstance):
if declare_dest:
self.emit_line('PyObject *{};'.format(dest))
concrete = all_concrete_classes(typ.class_ir)
# If there are too many concrete subclasses or we can't find any
# (meaning the code ought to be dead or we aren't doing global opts),
# fall back to a normal typecheck.
# Otherwise check all the subclasses.
if not concrete or len(
concrete) > FAST_ISINSTANCE_MAX_SUBCLASSES + 1:
check = '(PyObject_TypeCheck({}, {}))'.format(
src, self.type_struct_name(typ.class_ir))
else:
full_str = '(Py_TYPE({src}) == {targets[0]})'
for i in range(1, len(concrete)):
full_str += ' || (Py_TYPE({src}) == {targets[%d]})' % i
if len(concrete) > 1:
full_str = '(%s)' % full_str
check = full_str.format(
src=src,
targets=[self.type_struct_name(ir) for ir in concrete])
if likely:
check = '(likely{})'.format(check)
self.emit_arg_check(src, dest, typ, check, optional)
self.emit_lines(' {} = {};'.format(dest, src), 'else {', err,
'{} = NULL;'.format(dest), '}')
elif is_none_rprimitive(typ):
if declare_dest:
self.emit_line('PyObject *{};'.format(dest))
check = '({} == Py_None)'
if likely:
check = '(likely{})'.format(check)
self.emit_arg_check(src, dest, typ, check.format(src), optional)
self.emit_lines(' {} = {};'.format(dest, src), 'else {', err,
'{} = NULL;'.format(dest), '}')
elif is_object_rprimitive(typ):
if declare_dest:
self.emit_line('PyObject *{};'.format(dest))
self.emit_arg_check(src, dest, typ, '', optional)
self.emit_line('{} = {};'.format(dest, src))
if optional:
self.emit_line('}')
elif isinstance(typ, RUnion):
self.emit_union_cast(src, dest, typ, declare_dest, err, optional,
src_type)
elif isinstance(typ, RTuple):
assert not optional
self.emit_tuple_cast(src, dest, typ, declare_dest, err, src_type)
else:
assert False, 'Cast not implemented: %s' % typ
def to_str(self, env: Environment) -> str:
s = env.format('%sdec_ref %r', 'x' if self.is_xdec else '', self.src)
if is_bool_rprimitive(self.src.type) or is_int_rprimitive(
self.src.type):
s += ' :: {}'.format(short_name(self.src.type.name))
return s
def visit_dec_ref(self, op: DecRef) -> str:
s = self.format('%sdec_ref %r', 'x' if op.is_xdec else '', op.src)
# TODO: Remove bool check (it's unboxed)
if is_bool_rprimitive(op.src.type) or is_int_rprimitive(op.src.type):
s += ' :: {}'.format(short_name(op.src.type.name))
return s
def visit_inc_ref(self, op: IncRef) -> str:
s = self.format('inc_ref %r', op.src)
# TODO: Remove bool check (it's unboxed)
if is_bool_rprimitive(op.src.type) or is_int_rprimitive(op.src.type):
s += ' :: {}'.format(short_name(op.src.type.name))
return s
def emit_unbox(self,
src: str,
dest: str,
typ: RType,
*,
declare_dest: bool = False,
error: Optional[ErrorHandler] = None,
raise_exception: bool = True,
optional: bool = False,
borrow: bool = False) -> None:
"""Emit code for unboxing a value of given type (from PyObject *).
By default, assign error value to dest if the value has an
incompatible type and raise TypeError. These can be customized
using 'error' and 'raise_exception'.
Generate a new reference unless 'borrow' is True.
Args:
src: Name of source C variable
dest: Name of target C variable
typ: Type of value
declare_dest: If True, also declare the variable 'dest'
error: What happens on error
raise_exception: If True, also raise TypeError on failure
borrow: If True, create a borrowed reference
"""
error = error or AssignHandler()
# TODO: Verify refcount handling.
if isinstance(error, AssignHandler):
failure = f'{dest} = {self.c_error_value(typ)};'
elif isinstance(error, GotoHandler):
failure = 'goto %s;' % error.label
else:
assert isinstance(error, ReturnHandler)
failure = 'return %s;' % error.value
if raise_exception:
raise_exc = f'CPy_TypeError("{self.pretty_name(typ)}", {src}); '
failure = raise_exc + failure
if is_int_rprimitive(typ) or is_short_int_rprimitive(typ):
if declare_dest:
self.emit_line(f'CPyTagged {dest};')
self.emit_arg_check(src, dest, typ, f'(likely(PyLong_Check({src})))',
optional)
if borrow:
self.emit_line(f' {dest} = CPyTagged_BorrowFromObject({src});')
else:
self.emit_line(f' {dest} = CPyTagged_FromObject({src});')
self.emit_line('else {')
self.emit_line(failure)
self.emit_line('}')
elif is_bool_rprimitive(typ) or is_bit_rprimitive(typ):
# Whether we are borrowing or not makes no difference.
if declare_dest:
self.emit_line(f'char {dest};')
self.emit_arg_check(src, dest, typ, f'(unlikely(!PyBool_Check({src}))) {{',
optional)
self.emit_line(failure)
self.emit_line('} else')
conversion = f'{src} == Py_True'
self.emit_line(f' {dest} = {conversion};')
elif is_none_rprimitive(typ):
# Whether we are borrowing or not makes no difference.
if declare_dest:
self.emit_line(f'char {dest};')
self.emit_arg_check(src, dest, typ, f'(unlikely({src} != Py_None)) {{',
optional)
self.emit_line(failure)
self.emit_line('} else')
self.emit_line(f' {dest} = 1;')
elif isinstance(typ, RTuple):
self.declare_tuple_struct(typ)
if declare_dest:
self.emit_line(f'{self.ctype(typ)} {dest};')
# HACK: The error handling for unboxing tuples is busted
# and instead of fixing it I am just wrapping it in the
# cast code which I think is right. This is not good.
if optional:
self.emit_line(f'if ({src} == NULL) {{')
self.emit_line(f'{dest} = {self.c_error_value(typ)};')
self.emit_line('} else {')
cast_temp = self.temp_name()
self.emit_tuple_cast(src, cast_temp, typ, declare_dest=True, err='', src_type=None)
self.emit_line(f'if (unlikely({cast_temp} == NULL)) {{')
# self.emit_arg_check(src, dest, typ,
# '(!PyTuple_Check({}) || PyTuple_Size({}) != {}) {{'.format(
# src, src, len(typ.types)), optional)
self.emit_line(failure) # TODO: Decrease refcount?
self.emit_line('} else {')
if not typ.types:
self.emit_line(f'{dest}.empty_struct_error_flag = 0;')
for i, item_type in enumerate(typ.types):
temp = self.temp_name()
# emit_tuple_cast above checks the size, so this should not fail
self.emit_line(f'PyObject *{temp} = PyTuple_GET_ITEM({src}, {i});')
temp2 = self.temp_name()
# Unbox or check the item.
if item_type.is_unboxed:
self.emit_unbox(temp,
temp2,
item_type,
raise_exception=raise_exception,
error=error,
declare_dest=True,
borrow=borrow)
else:
if not borrow:
self.emit_inc_ref(temp, object_rprimitive)
self.emit_cast(temp, temp2, item_type, declare_dest=True)
self.emit_line(f'{dest}.f{i} = {temp2};')
self.emit_line('}')
if optional:
self.emit_line('}')
else:
assert False, 'Unboxing not implemented: %s' % typ
def emit_cast(self,
src: str,
dest: str,
typ: RType,
*,
declare_dest: bool = False,
error: Optional[ErrorHandler] = None,
raise_exception: bool = True,
optional: bool = False,
src_type: Optional[RType] = None,
likely: bool = True) -> None:
"""Emit code for casting a value of given type.
Somewhat strangely, this supports unboxed types but only
operates on boxed versions. This is necessary to properly
handle types such as Optional[int] in compatibility glue.
By default, assign NULL (error value) to dest if the value has
an incompatible type and raise TypeError. These can be customized
using 'error' and 'raise_exception'.
Always copy/steal the reference in 'src'.
Args:
src: Name of source C variable
dest: Name of target C variable
typ: Type of value
declare_dest: If True, also declare the variable 'dest'
error: What happens on error
raise_exception: If True, also raise TypeError on failure
likely: If the cast is likely to succeed (can be False for unions)
"""
error = error or AssignHandler()
if isinstance(error, AssignHandler):
handle_error = '%s = NULL;' % dest
elif isinstance(error, GotoHandler):
handle_error = 'goto %s;' % error.label
else:
assert isinstance(error, ReturnHandler)
handle_error = 'return %s;' % error.value
if raise_exception:
raise_exc = f'CPy_TypeError("{self.pretty_name(typ)}", {src}); '
err = raise_exc + handle_error
else:
err = handle_error
# Special case casting *from* optional
if src_type and is_optional_type(src_type) and not is_object_rprimitive(typ):
value_type = optional_value_type(src_type)
assert value_type is not None
if is_same_type(value_type, typ):
if declare_dest:
self.emit_line(f'PyObject *{dest};')
check = '({} != Py_None)'
if likely:
check = f'(likely{check})'
self.emit_arg_check(src, dest, typ, check.format(src), optional)
self.emit_lines(
f' {dest} = {src};',
'else {',
err,
'}')
return
# TODO: Verify refcount handling.
if (is_list_rprimitive(typ) or is_dict_rprimitive(typ) or is_set_rprimitive(typ)
or is_str_rprimitive(typ) or is_range_rprimitive(typ) or is_float_rprimitive(typ)
or is_int_rprimitive(typ) or is_bool_rprimitive(typ) or is_bit_rprimitive(typ)):
if declare_dest:
self.emit_line(f'PyObject *{dest};')
if is_list_rprimitive(typ):
prefix = 'PyList'
elif is_dict_rprimitive(typ):
prefix = 'PyDict'
elif is_set_rprimitive(typ):
prefix = 'PySet'
elif is_str_rprimitive(typ):
prefix = 'PyUnicode'
elif is_range_rprimitive(typ):
prefix = 'PyRange'
elif is_float_rprimitive(typ):
prefix = 'CPyFloat'
elif is_int_rprimitive(typ):
prefix = 'PyLong'
elif is_bool_rprimitive(typ) or is_bit_rprimitive(typ):
prefix = 'PyBool'
else:
assert False, 'unexpected primitive type'
check = '({}_Check({}))'
if likely:
check = f'(likely{check})'
self.emit_arg_check(src, dest, typ, check.format(prefix, src), optional)
self.emit_lines(
f' {dest} = {src};',
'else {',
err,
'}')
elif is_bytes_rprimitive(typ):
if declare_dest:
self.emit_line(f'PyObject *{dest};')
check = '(PyBytes_Check({}) || PyByteArray_Check({}))'
if likely:
check = f'(likely{check})'
self.emit_arg_check(src, dest, typ, check.format(src, src), optional)
self.emit_lines(
f' {dest} = {src};',
'else {',
err,
'}')
elif is_tuple_rprimitive(typ):
if declare_dest:
self.emit_line(f'{self.ctype(typ)} {dest};')
check = '(PyTuple_Check({}))'
if likely:
check = f'(likely{check})'
self.emit_arg_check(src, dest, typ,
check.format(src), optional)
self.emit_lines(
f' {dest} = {src};',
'else {',
err,
'}')
elif isinstance(typ, RInstance):
if declare_dest:
self.emit_line(f'PyObject *{dest};')
concrete = all_concrete_classes(typ.class_ir)
# If there are too many concrete subclasses or we can't find any
# (meaning the code ought to be dead or we aren't doing global opts),
# fall back to a normal typecheck.
# Otherwise check all the subclasses.
if not concrete or len(concrete) > FAST_ISINSTANCE_MAX_SUBCLASSES + 1:
check = '(PyObject_TypeCheck({}, {}))'.format(
src, self.type_struct_name(typ.class_ir))
else:
full_str = '(Py_TYPE({src}) == {targets[0]})'
for i in range(1, len(concrete)):
full_str += ' || (Py_TYPE({src}) == {targets[%d]})' % i
if len(concrete) > 1:
full_str = '(%s)' % full_str
check = full_str.format(
src=src, targets=[self.type_struct_name(ir) for ir in concrete])
if likely:
check = f'(likely{check})'
self.emit_arg_check(src, dest, typ, check, optional)
self.emit_lines(
f' {dest} = {src};',
'else {',
err,
'}')
elif is_none_rprimitive(typ):
if declare_dest:
self.emit_line(f'PyObject *{dest};')
check = '({} == Py_None)'
if likely:
check = f'(likely{check})'
self.emit_arg_check(src, dest, typ,
check.format(src), optional)
self.emit_lines(
f' {dest} = {src};',
'else {',
err,
'}')
elif is_object_rprimitive(typ):
if declare_dest:
self.emit_line(f'PyObject *{dest};')
self.emit_arg_check(src, dest, typ, '', optional)
self.emit_line(f'{dest} = {src};')
if optional:
self.emit_line('}')
elif isinstance(typ, RUnion):
self.emit_union_cast(src, dest, typ, declare_dest, err, optional, src_type)
elif isinstance(typ, RTuple):
assert not optional
self.emit_tuple_cast(src, dest, typ, declare_dest, err, src_type)
else:
assert False, 'Cast not implemented: %s' % typ
