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from .. import TypeEnum, Environment, Arg, Builtin, evaluate, InterpretPanic, NebSyntax, MultiFunction
from ..structs import *
import random
LISTS = Environment()
def interpretListLength(symbol, args, env, ns):
return Int(len(args[0].args))
length_func = Builtin("length", interpretListLength, [Arg("arg", TypeEnum.LIST)], return_type=Type(":int"))
length_multi = MultiFunction("length")
length_multi.register(length_func)
LISTS.register("length", length_multi)
def interpretFirst(symbol, args, env, ns):
if len(args[0].args) == 0:
raise InterpretPanic(symbol, "list is empty")
return evaluate(args[0].args[0], env, ns)
first_func = Builtin("first", interpretFirst, [Arg("arg", TypeEnum.LIST)])
first_multi = MultiFunction("first")
first_multi.register(first_func)
LISTS.register("first", first_multi)
def interpretRest(symbol, args, env, ns):
# TODO do we know it's not evaluated?
return List(args[0].args[1:]) # we don't evaluate the remainder of the list
rest_func = Builtin("rest", interpretRest, [Arg("arg", TypeEnum.LIST)], return_type=Type(":list"))
rest_multi = MultiFunction("rest")
rest_multi.register(rest_func)
LISTS.register("rest", rest_multi)
def interpretListReverse(symbol, args, env, ns):
new_args = args[0].args[:] # make a copy of the args
new_args.reverse()
return List(new_args)
reverse_func = Builtin("reverse", interpretListReverse, [Arg("list", TypeEnum.LIST)], return_type=Type(":list"))
reverse_multi = MultiFunction("reverse")
reverse_multi.register(reverse_func)
LISTS.register("reverse", reverse_multi)
def interpretEmpty(symbol, args, env, ns):
return Bool(len(args[0].args) == 0)
empty_func = Builtin("empty?", interpretEmpty, [Arg("list", TypeEnum.LIST)], return_type=Type(":bool"))
empty_multi = MultiFunction("empty")
empty_multi.register(empty_func)
LISTS.register("empty?", empty_multi)
def interpretShuf(symbol, args, env, ns):
items = args[0].args[:]
random.shuffle(items)
return List(items)
shuf_func = Builtin("shuf", interpretShuf, [Arg("list", TypeEnum.LIST)], return_type=Type(":list"))
shuf_multi = MultiFunction("shuf")
shuf_multi.register(shuf_func)
LISTS.register("shuf", shuf_multi)
def interpretIn(symbol, args, env, ns):
target = args[0]
lst = args[1]
for arg in lst.args:
if type(arg) == type(target) and arg.value == target.value:
return Bool(True)
return Bool(False)
in_target_arg = Arg("target", TypeEnum.LITERAL)
in_list_arg = Arg("list", TypeEnum.LIST)
in_func = Builtin("in?", interpretIn, [in_target_arg, in_list_arg], return_type=Type(":bool"))
in_multi = MultiFunction("in?")
in_multi.register(in_func)
LISTS.register("in?", in_multi)
def interpretLast(symbol, args, env, ns):
if len(args[0].args) == 0:
raise InterpretPanic("List is empty")
return evaluate(args[0].args[-1], env, ns)
last_func = Builtin("last", interpretLast, [Arg("list", TypeEnum.LIST)])
last_multi = MultiFunction("last")
last_multi.register(last_func)
LISTS.register("last", last_multi)
def interpretSlice(symbol, args, env, ns):
lst = args[0]
idx = args[1]
if len(args) == 2:
return List(lst.args[idx.value - 1:])
length = args[2]
diff = idx.value - 1 + length.value
return List(lst.args[idx.value - 1:diff])
slice_list_arg = Arg("list", TypeEnum.LIST)
slice_idx_arg = Arg("idx", TypeEnum.INT)
#slice_length_arg = Arg("length", TypeEnum.INT, optional=True)
slice_length_arg = Arg("length", TypeEnum.INT)
slice_nolength_func = Builtin("slice", interpretSlice, [slice_list_arg, slice_idx_arg], return_type=Type(":list"))
slice_length_func = Builtin("slice", interpretSlice, [slice_list_arg, slice_idx_arg, slice_length_arg], return_type=Type(":list"))
slice_multi = MultiFunction("slice")
slice_multi.register(slice_nolength_func)
slice_multi.register(slice_length_func)
LISTS.register("slice", slice_multi)
def interpretAppend(symbol, args, env, ns):
lst = args[0]
val = args[1]
items = lst.args[:]
return List(items + [val])
append_func = Builtin("append", interpretAppend, [Arg("list", TypeEnum.LIST), Arg("item", TypeEnum.ANY)], return_type=Type(":list"))
append_multi = MultiFunction("append")
append_multi.register(append_func)
LISTS.register("append", append_multi)
# TODO: this is actually for records/structs/whatever they're called
def interpretRemove(symbol, args, env, ns):
lst = args[0]
key = args[1]
out = []
for arg in lst.args:
if arg.args[0].value != key.value:
out.append(arg)
return List(out)
remove_func = Builtin("remove", interpretRemove, [Arg("list", TypeEnum.LIST), Arg("key", TypeEnum.ANY)], return_type=Type(":list"))
remove_multi = MultiFunction("remove")
remove_multi.register(remove_func)
LISTS.register("remove", remove_multi)
def interpretZip(symbol, args, env, ns):
z1 = args[0]
z2 = args[1]
if len(z1.args) != len(z2.args):
raise InterpretPanic(symbol, "requires two :lists of the same size")
out = []
for idx in range(len(z1.args)):
f = z1.args[idx]
s = z2.args[idx]
out.append(List([f, s]))
return List(out)
zip_arg = Arg("list", TypeEnum.LIST)
zip_func = Builtin("zip", interpretZip, [zip_arg, zip_arg], return_type=Type(":list"))
zip_multi = MultiFunction("zip")
zip_multi.register(zip_func)
LISTS.register("zip", zip_multi)
def interpretList(symbol, args, env, ns):
return List(args)
list_func = Builtin("list", interpretList, [], Arg("item", TypeEnum.ANY), Type(":list"))
list_multi = MultiFunction("list")
list_multi.register(list_func)
LISTS.register("list", list_multi)
'''
def interpretSortNumbers(symbol, args, env, ns):
items = []
for arg in args[0].args:
if not isinstance(arg, Int) and not isinstance(arg, Float):
raise InterpretPanic(symbol, "requires all :numbers", arg)
items.append(arg.value)
items.sort()
out = []
for item in items:
if isinstance(item, int):
out.append(Int(item))
else:
out.append(Float(item))
return List(out)
LISTS.register("sort-numbers", Builtin("sort-numbers", interpretSortNumbers, [Arg("list", TypeEnum.LIST)], return_type=Type(":list")))
'''
def interpretPrepend(symbol, args, env, ns):
lst = args[0]
val = args[1]
items = lst.args[:]
return List([val] + items)
prepend_func = Builtin("prepend", interpretPrepend, [Arg("list", TypeEnum.LIST), Arg("item", TypeEnum.ANY)], return_type=Type(":list"))
prepend_multi = MultiFunction("prepend")
prepend_multi.register(prepend_func)
LISTS.register("prepend", prepend_multi)
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