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transforms/inline: encode exceptions

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This commit is contained in:
Sebastien Bourdeauducq 2014-09-21 23:30:40 +08:00
parent 655835e8de
commit e821f9eb83
2 changed files with 40 additions and 6 deletions
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3
artiq/devices/core.py
View File

@ -44,7 +44,8 @@ class Core:
# transform/simplify AST
_debug_unparse = _make_debug_unparse("fold_constants_2")
func_def, rpc_map = inline(self, k_function, k_args, k_kwargs)
func_def, rpc_map, exception_map = inline(
self, k_function, k_args, k_kwargs)
_debug_unparse("inline", func_def)
lower_units(func_def, self.runtime_env.ref_period)

41
artiq/transforms/inline.py
View File

@ -27,13 +27,14 @@ class _ReferenceManager:
# inlined_name -> use_count
self.use_count = dict()
self.rpc_map = defaultdict(lambda: len(self.rpc_map))
self.exception_map = defaultdict(lambda: len(self.exception_map))
self.kernel_attr_init = []
# reserved names
for kg in core_language.kernel_globals:
self.use_count[kg] = 1
for name in ("int", "round", "int64", "round64", "float", "array",
"range", "Fraction", "Quantity",
"range", "Fraction", "Quantity", "EncodedException",
"s_unit", "Hz_unit", "microcycle_unit"):
self.use_count[name] = 1
@ -93,7 +94,7 @@ _embeddable_calls = {
core_language.syscall,
range, int, float, round,
core_language.int64, core_language.round64, core_language.array,
Fraction, units.Quantity
Fraction, units.Quantity, core_language.EncodedException
}
@ -173,7 +174,7 @@ class _ReferenceReplacer(ast.NodeVisitor):
retval_name = self.rm.new_name(
func.k_function_info.k_function.__name__ + "_return")
args = [func.__self__] + new_args
inlined, _ = inline(self.core, func.k_function_info.k_function,
inlined, _, _ = inline(self.core, func.k_function_info.k_function,
args, dict(), self.rm, retval_name)
self._insertion_point.append(ast.With(
items=[ast.withitem(context_expr=ast.Name(id="sequential",
@ -214,6 +215,35 @@ class _ReferenceReplacer(ast.NodeVisitor):
self.generic_visit(node)
return node
def visit_Raise(self, node):
if node.cause is not None:
raise NotImplementedError("Exception causes are not supported")
exception_class = self.rm.get(self.obj, self.func_name, node.exc)
if not inspect.isclass(exception_class):
raise NotImplementedError("Exception must be a class")
exception_id = self.rm.exception_map[exception_class]
node.exc = ast.copy_location(
ast.Call(func=ast.Name("EncodedException", ast.Load()),
args=[value_to_ast(exception_id)],
keywords=[], starargs=None, kwargs=None),
node.exc)
return node
def visit_ExceptHandler(self, node):
if node.name is not None:
raise NotImplementedError("'as target' is not supported")
exception_class = self.rm.get(self.obj, self.func_name, node.type)
if not inspect.isclass(exception_class):
raise NotImplementedError("Exception type must be a class")
exception_id = self.rm.exception_map[exception_class]
node.type = ast.copy_location(
ast.Call(func=ast.Name("EncodedException", ast.Load()),
args=[value_to_ast(exception_id)],
keywords=[], starargs=None, kwargs=None),
node.type)
self.generic_visit(node)
return node
class _ListReadOnlyParams(ast.NodeVisitor):
def visit_FunctionDef(self, node):
@ -272,4 +302,7 @@ def inline(core, k_function, k_args, k_kwargs, rm=None, retval_name=None):
r_rpc_map = dict((rpc_num, rpc_fun)
for rpc_fun, rpc_num in rm.rpc_map.items())
return func_def, r_rpc_map
r_exception_map = dict((exception_num, exception_class)
for exception_class, exception_num
in rm.exception_map.items())
return func_def, r_rpc_map, r_exception_map