def add_handler_block(ir: FuncIR) -> BasicBlock:
block = BasicBlock()
ir.blocks.append(block)
op = LoadErrorValue(ir.ret_type)
block.ops.append(op)
ir.env.add_op(op)
block.ops.append(Return(op))
return block
def visit_return_stmt(self, stmt: ReturnStmt) -> Register:
if stmt.expr:
retval = self.accept(stmt.expr)
else:
retval = self.environment.add_temp(NoneRType())
self.add(PrimitiveOp(retval, PrimitiveOp.NONE))
self.add(Return(retval))
return INVALID_REGISTER
def gen_glue_ne_method(self, cls: ClassIR, line: int) -> FuncIR:
"""Generate a __ne__ method from a __eq__ method. """
self.builder.enter()
rt_args = (RuntimeArg("self", RInstance(cls)), RuntimeArg("rhs", object_rprimitive))
# The environment operates on Vars, so we make some up
fake_vars = [(Var(arg.name), arg.type) for arg in rt_args]
args = [
self.builder.read(
self.builder.environment.add_local_reg(
var, type, is_arg=True
),
line
)
for var, type in fake_vars
] # type: List[Value]
self.builder.ret_types[-1] = object_rprimitive
# If __eq__ returns NotImplemented, then __ne__ should also
not_implemented_block, regular_block = BasicBlock(), BasicBlock()
eqval = self.add(MethodCall(args[0], '__eq__', [args[1]], line))
not_implemented = self.primitive_op(not_implemented_op, [], line)
self.add(Branch(
self.builder.binary_op(eqval, not_implemented, 'is', line),
not_implemented_block,
regular_block,
Branch.BOOL_EXPR))
self.builder.activate_block(regular_block)
retval = self.builder.coerce(
self.builder.unary_op(eqval, 'not', line), object_rprimitive, line
)
self.add(Return(retval))
self.builder.activate_block(not_implemented_block)
self.add(Return(not_implemented))
blocks, env, ret_type, _ = self.builder.leave()
return FuncIR(
FuncDecl('__ne__', cls.name, self.module_name,
FuncSignature(rt_args, ret_type)),
blocks, env)
def test_simple(self) -> None:
self.block.ops.append(Return(self.reg))
fn = FuncIR('myfunc', [self.arg], IntRType(), [self.block], self.env)
emitter = Emitter(EmitterContext())
generate_native_function(fn, emitter)
result = emitter.fragments
assert_string_arrays_equal([
'static CPyTagged CPyDef_myfunc(CPyTagged cpy_r_arg) {\n',
'CPyL0: ;\n',
' return cpy_r_arg;\n',
'}\n',
],
result,
msg='Generated code invalid')
def test_simple(self) -> None:
self.block.ops.append(Return(self.reg))
fn = FuncIR('myfunc', None, 'mod', FuncSignature([self.arg], int_rprimitive),
[self.block], self.env)
emitter = Emitter(EmitterContext(['mod']))
generate_native_function(fn, emitter, 'prog.py', 'prog')
result = emitter.fragments
assert_string_arrays_equal(
[
'static CPyTagged CPyDef_myfunc(CPyTagged cpy_r_arg) {\n',
'CPyL0: ;\n',
' return cpy_r_arg;\n',
'}\n',
],
result, msg='Generated code invalid')
def test_return(self) -> None:
self.assert_emit(Return(self.m), "return cpy_r_m;")
def generate_attr_defaults(self, cdef: ClassDef) -> None:
"""Generate an initialization method for default attr values (from class vars)"""
cls = self.mapper.type_to_ir[cdef.info]
if cls.builtin_base:
return
# Pull out all assignments in classes in the mro so we can initialize them
# TODO: Support nested statements
default_assignments = []
for info in reversed(cdef.info.mro):
if info not in self.mapper.type_to_ir:
continue
for stmt in info.defn.defs.body:
if (isinstance(stmt, AssignmentStmt)
and isinstance(stmt.lvalues[0], NameExpr)
and not is_class_var(stmt.lvalues[0])
and not isinstance(stmt.rvalue, TempNode)):
if stmt.lvalues[0].name == '__slots__':
continue
# Skip type annotated assignments in dataclasses
if is_dataclass(cdef) and stmt.type:
continue
default_assignments.append(stmt)
if not default_assignments:
return
self.builder.enter()
self.builder.ret_types[-1] = bool_rprimitive
rt_args = (RuntimeArg(SELF_NAME, RInstance(cls)),)
self_var = self.builder.read(add_self_to_env(self.builder.environment, cls), -1)
for stmt in default_assignments:
lvalue = stmt.lvalues[0]
assert isinstance(lvalue, NameExpr)
if not stmt.is_final_def and not is_constant(stmt.rvalue):
self.builder.warning('Unsupported default attribute value', stmt.rvalue.line)
# If the attribute is initialized to None and type isn't optional,
# don't initialize it to anything.
attr_type = cls.attr_type(lvalue.name)
if isinstance(stmt.rvalue, RefExpr) and stmt.rvalue.fullname == 'builtins.None':
if (not is_optional_type(attr_type) and not is_object_rprimitive(attr_type)
and not is_none_rprimitive(attr_type)):
continue
val = self.builder.coerce(self.accept(stmt.rvalue), attr_type, stmt.line)
self.add(SetAttr(self_var, lvalue.name, val, -1))
self.add(Return(self.primitive_op(true_op, [], -1)))
blocks, env, ret_type, _ = self.builder.leave()
ir = FuncIR(
FuncDecl('__mypyc_defaults_setup',
cls.name, self.module_name,
FuncSignature(rt_args, ret_type)),
blocks, env)
self.builder.functions.append(ir)
cls.methods[ir.name] = ir
def gen_return(self, builder: 'IRBuilder', value: Value,
line: int) -> None:
builder.add(Return(value))
def add_implicit_return(self) -> None:
block = self.blocks[-1][-1]
if not block.ops or not isinstance(block.ops[-1], Return):
retval = self.environment.add_temp(NoneRType())
self.add(PrimitiveOp(retval, PrimitiveOp.NONE))
self.add(Return(retval))