def compile_catch_expression(self, expr):
catch = expr.pop(0) # catch
try:
exceptions = expr.pop(0)
except IndexError:
exceptions = HyList()
# exceptions catch should be either:
# [[list of exceptions]]
# or
# [variable [list of exceptions]]
# or
# [variable exception]
# or
# [exception]
# or
# []
if not isinstance(exceptions, HyList):
raise HyTypeError(exceptions,
"`%s' exceptions list is not a list" % catch)
if len(exceptions) > 2:
raise HyTypeError(exceptions,
"`%s' exceptions list is too long" % catch)
# [variable [list of exceptions]]
# let's pop variable and use it as name
if len(exceptions) == 2:
name = exceptions.pop(0)
if sys.version_info[0] >= 3:
# Python3 features a change where the Exception handler
# moved the name from a Name() to a pure Python String type.
#
# We'll just make sure it's a pure "string", and let it work
# it's magic.
name = ast_str(name)
else:
# Python2 requires an ast.Name, set to ctx Store.
name = self._storeize(self.compile(name))
else:
name = None
try:
exceptions_list = exceptions.pop(0)
except IndexError:
exceptions_list = []
if isinstance(exceptions_list, list):
if len(exceptions_list):
# [FooBar BarFoo] → catch Foobar and BarFoo exceptions
_type = ast.Tuple(elts=[self.compile(x)
for x in exceptions_list],
lineno=expr.start_line,
col_offset=expr.start_column,
ctx=ast.Load())
else:
# [] → all exceptions catched
_type = None
elif isinstance(exceptions_list, HySymbol):
_type = self.compile(exceptions_list)
else:
raise HyTypeError(exceptions,
"`%s' needs a valid exception list" % catch)
body = self._code_branch([self.compile(x) for x in expr],
expr.start_line,
expr.start_column)
return ast.ExceptHandler(
lineno=expr.start_line,
col_offset=expr.start_column,
type=_type,
name=name,
body=body)
def compile_catch_expression(self, expr):
catch = expr.pop(0) # catch
try:
exceptions = expr.pop(0)
except IndexError:
exceptions = HyList()
# exceptions catch should be either:
# [[list of exceptions]]
# or
# [variable [list of exceptions]]
# or
# [variable exception]
# or
# [exception]
# or
# []
if not isinstance(exceptions, HyList):
raise HyTypeError(exceptions,
"`%s' exceptions list is not a list" % catch)
if len(exceptions) > 2:
raise HyTypeError(exceptions,
"`%s' exceptions list is too long" % catch)
# [variable [list of exceptions]]
# let's pop variable and use it as name
if len(exceptions) == 2:
name = exceptions.pop(0)
if sys.version_info[0] >= 3:
# Python3 features a change where the Exception handler
# moved the name from a Name() to a pure Python String type.
#
# We'll just make sure it's a pure "string", and let it work
# it's magic.
name = ast_str(name)
else:
# Python2 requires an ast.Name, set to ctx Store.
name = self._storeize(self.compile(name))
else:
name = None
try:
exceptions_list = exceptions.pop(0)
except IndexError:
exceptions_list = []
if isinstance(exceptions_list, list):
if len(exceptions_list):
# [FooBar BarFoo] → catch Foobar and BarFoo exceptions
_type = ast.Tuple(
elts=[self.compile(x) for x in exceptions_list],
lineno=expr.start_line,
col_offset=expr.start_column,
ctx=ast.Load())
else:
# [] → all exceptions catched
_type = None
elif isinstance(exceptions_list, HySymbol):
_type = self.compile(exceptions_list)
else:
raise HyTypeError(exceptions,
"`%s' needs a valid exception list" % catch)
body = self._code_branch([self.compile(x) for x in expr],
expr.start_line, expr.start_column)
return ast.ExceptHandler(lineno=expr.start_line,
col_offset=expr.start_column,
type=_type,
name=name,
body=body)
