def chaperone_struct(args):
if len(args) == 1 and isinstance(args[0], values_struct.W_RootStruct):
return args[0]
args, prop_keys, prop_vals = unpack_properties(args, "chaperone-struct")
if len(args) < 1 or len(args) % 2 != 1:
raise SchemeException("chaperone-struct: arity mismatch")
struct, args = args[0], args[1:]
if not isinstance(struct, values_struct.W_RootStruct):
raise SchemeException("chaperone-struct: not given struct")
all_false = True
count = len(args) / 2
overrides = [None] * count
handlers = [None] * count
for i in range(count):
ovr = args[i * 2]
hnd = args[i * 2 + 1]
overrides[i] = ovr
handlers[i] = hnd
if not imp.valid_struct_proc(ovr):
raise SchemeException("chaperone-struct: not given valid field accessor")
if hnd is not values.w_false:
all_false = False
if not hnd.iscallable() and hnd is not values.w_false:
raise SchemeException("chaperone-struct: supplied hander is not a procedure")
if all_false and not prop_keys:
return struct
return imp.W_ChpStruct(struct, overrides, handlers, prop_keys, prop_vals)
def chaperone_struct(args):
args, prop_keys, prop_vals = unpack_properties(args, "chaperone-struct")
if len(args) < 1 or len(args) % 2 != 1:
raise SchemeException("chaperone-struct: arity mismatch")
if len(args) == 1:
return args[0]
struct, args = args[0], args[1:]
if not isinstance(struct, values_struct.W_RootStruct):
raise SchemeException("chaperone-struct: not given struct")
# Slicing would be nicer
overrides = [args[i] for i in range(0, len(args), 2)]
handlers = [args[i] for i in range(1, len(args), 2)]
for i in overrides:
if not imp.valid_struct_proc(i):
raise SchemeException("chaperone-struct: not given valid field accessor")
for i in handlers:
if not i.iscallable():
raise SchemeException("chaperone-struct: supplied hander is not a procedure")
return imp.W_ChpStruct(struct, overrides, handlers, prop_keys, prop_vals)
def impersonate_struct(args):
if len(args) == 1 and isinstance(args[0], values_struct.W_RootStruct):
return args[0]
args, prop_keys, prop_vals = unpack_properties(args, "impersonate-struct")
if len(args) < 1:
raise SchemeException("impersonate-struct: arity mismatch")
struct, args = args[0], args[1:]
if args and isinstance(args[0], values_struct.W_StructType):
args = args[1:]
if len(args) % 2 != 0:
raise SchemeException("impersonate-struct: arity mismatch")
if not isinstance(struct, values_struct.W_RootStruct):
raise SchemeException("impersonate-struct: not given struct")
struct_type = struct.struct_type()
assert isinstance(struct_type, values_struct.W_StructType)
# Consider storing immutables in an easier form in the structs implementation
immutables = struct_type.immutables
all_false = True
count = len(args) / 2
overrides = [None] * count
handlers = [None] * count
for i in range(count):
ovr = args[i * 2]
hnd = args[i * 2 + 1]
overrides[i] = ovr
handlers[i] = hnd
if not imp.valid_struct_proc(ovr):
raise SchemeException(
"impersonate-struct: not given valid field accessor")
elif (isinstance(ovr, values_struct.W_StructFieldMutator)
and ovr.field in immutables):
raise SchemeException(
"impersonate-struct: cannot impersonate immutable field")
elif (isinstance(ovr, values_struct.W_StructFieldAccessor)
and ovr.field in immutables):
raise SchemeException(
"impersonate-struct: cannot impersonate immutable field")
if hnd is not values.w_false:
all_false = False
if not hnd.iscallable() and hnd is not values.w_false:
raise SchemeException(
"impersonate-struct: supplied hander is not a procedure")
if all_false and not prop_keys:
return struct
return imp.W_ImpStruct(struct, overrides, handlers, prop_keys, prop_vals)
def impersonate_struct(args):
if len(args) == 1 and isinstance(args[0], values_struct.W_RootStruct):
return args[0]
args, prop_keys, prop_vals = unpack_properties(args, "impersonate-struct")
if len(args) < 1:
raise SchemeException("impersonate-struct: arity mismatch")
struct, args = args[0], args[1:]
if args and isinstance(args[0], values_struct.W_StructType):
args = args[1:]
if len(args) % 2 != 0:
raise SchemeException("impersonate-struct: arity mismatch")
base = imp.get_base_object(struct)
if not isinstance(base, values_struct.W_RootStruct):
raise SchemeException("impersonate-struct: not given struct")
struct_type = base.struct_type()
assert isinstance(struct_type, values_struct.W_StructType)
# Consider storing immutables in an easier form in the structs implementation
immutables = struct_type.immutables
all_false = True
count = len(args) / 2
overrides = [None] * count
handlers = [None] * count
for i in range(count):
ovr = args[i * 2]
hnd = args[i * 2 + 1]
overrides[i] = ovr
handlers[i] = hnd
if not imp.valid_struct_proc(ovr):
raise SchemeException("impersonate-struct: not given valid field accessor")
elif (isinstance(ovr, values_struct.W_StructFieldMutator) and
ovr.field in immutables):
raise SchemeException("impersonate-struct: cannot impersonate immutable field")
elif (isinstance(ovr, values_struct.W_StructFieldAccessor) and
ovr.field in immutables):
raise SchemeException("impersonate-struct: cannot impersonate immutable field")
if hnd is not values.w_false:
all_false = False
if not hnd.iscallable() and hnd is not values.w_false:
raise SchemeException("impersonate-struct: supplied hander is not a procedure")
if all_false and not prop_keys:
return struct
return imp.make_struct_proxy(imp.W_ImpStruct,
struct, overrides, handlers, prop_keys, prop_vals)
def chaperone_struct(args):
from pycket.prims.struct_structinfo import struct_info
if len(args) == 1 and isinstance(args[0], values_struct.W_RootStruct):
return args[0]
args, prop_keys, prop_vals = unpack_properties(args, "chaperone-struct")
if len(args) < 1:
raise SchemeException("chaperone-struct: arity mismatch")
struct, args = args[0], args[1:]
if args and isinstance(args[0], values_struct.W_StructType):
args = args[1:]
if len(args) % 2 != 0:
raise SchemeException("chaperone-struct: arity mismatch")
base = imp.get_base_object(struct)
if not isinstance(base, values_struct.W_RootStruct):
raise SchemeException("chaperone-struct: not given struct")
all_false = True
count = len(args) / 2
overrides = [None] * count
handlers = [None] * count
for i in range(count):
ovr = args[i * 2]
hnd = args[i * 2 + 1]
overrides[i] = ovr
handlers[i] = hnd
if not imp.valid_struct_proc(ovr) and ovr is not struct_info:
raise SchemeException(
"chaperone-struct: not given valid field accessor")
if hnd is not values.w_false:
all_false = False
if not hnd.iscallable() and hnd is not values.w_false:
raise SchemeException(
"chaperone-struct: supplied hander is not a procedure")
if all_false and not prop_keys:
return struct
return imp.make_struct_proxy(imp.W_ChpStruct, struct, overrides, handlers,
prop_keys, prop_vals)
def chaperone_struct(args):
from pycket.prims.struct_structinfo import struct_info
if len(args) == 1 and isinstance(args[0], values_struct.W_RootStruct):
return args[0]
args, prop_keys, prop_vals = unpack_properties(args, "chaperone-struct")
if len(args) < 1:
raise SchemeException("chaperone-struct: arity mismatch")
struct, args = args[0], args[1:]
if args and isinstance(args[0], values_struct.W_StructType):
args = args[1:]
if len(args) % 2 != 0:
raise SchemeException("chaperone-struct: arity mismatch")
base = imp.get_base_object(struct)
if not isinstance(base, values_struct.W_RootStruct):
raise SchemeException("chaperone-struct: not given struct")
all_false = True
count = len(args) / 2
overrides = [None] * count
handlers = [None] * count
for i in range(count):
ovr = args[i * 2]
hnd = args[i * 2 + 1]
overrides[i] = ovr
handlers[i] = hnd
if not imp.valid_struct_proc(ovr) and ovr is not struct_info:
raise SchemeException("chaperone-struct: not given valid field accessor")
if hnd is not values.w_false:
all_false = False
if not hnd.iscallable() and hnd is not values.w_false:
raise SchemeException("chaperone-struct: supplied hander is not a procedure")
if all_false and not prop_keys:
return struct
return imp.make_struct_proxy(imp.W_ChpStruct,
struct, overrides, handlers, prop_keys, prop_vals)
def chaperone_struct(args):
if len(args) == 1 and isinstance(args[0], values_struct.W_RootStruct):
return args[0]
args, prop_keys, prop_vals = unpack_properties(args, "chaperone-struct")
if len(args) < 1 or len(args) % 2 != 1:
raise SchemeException("chaperone-struct: arity mismatch")
struct, args = args[0], args[1:]
if not isinstance(struct, values_struct.W_RootStruct):
raise SchemeException("chaperone-struct: not given struct")
all_false = True
count = len(args) / 2
overrides = [None] * count
handlers = [None] * count
for i in range(count):
ovr = args[i * 2]
hnd = args[i * 2 + 1]
overrides[i] = ovr
handlers[i] = hnd
if not imp.valid_struct_proc(ovr):
raise SchemeException(
"chaperone-struct: not given valid field accessor")
if hnd is not values.w_false:
all_false = False
if not hnd.iscallable() and hnd is not values.w_false:
raise SchemeException(
"chaperone-struct: supplied hander is not a procedure")
if all_false and not prop_keys:
return struct
return imp.W_ChpStruct(struct, overrides, handlers, prop_keys, prop_vals)
def impersonate_struct(args):
args, prop_keys, prop_vals = unpack_properties(args, "impersonate-struct")
if len(args) < 1 or len(args) % 2 != 1:
raise SchemeException("impersonate-struct: arity mismatch")
if len(args) == 1:
return args[0]
struct, args = args[0], args[1:]
if not isinstance(struct, values_struct.W_RootStruct):
raise SchemeException("impersonate-struct: not given struct")
struct_type = struct.struct_type()
assert isinstance(struct_type, values_struct.W_StructType)
# Consider storing immutables in an easier form in the structs implementation
immutables = struct_type.immutables
# Slicing would be nicer
overrides = [args[i] for i in range(0, len(args), 2)]
handlers = [args[i] for i in range(1, len(args), 2)]
for i in overrides:
if not imp.valid_struct_proc(i):
raise SchemeException("impersonate-struct: not given valid field accessor")
elif (isinstance(i, values_struct.W_StructFieldMutator) and
i.field.value in immutables):
raise SchemeException("impersonate-struct: cannot impersonate immutable field")
elif (isinstance(i, values_struct.W_StructFieldAccessor) and
i.field.value in immutables):
raise SchemeException("impersonate-struct: cannot impersonate immutable field")
for i in handlers:
if not i.iscallable():
raise SchemeException("impersonate-struct: supplied hander is not a procedure")
return imp.W_ImpStruct(struct, overrides, handlers, prop_keys, prop_vals)
