568 lines
16 KiB
Python
568 lines
16 KiB
Python
# Copyright (c) 2013 Paul Tagliamonte <paultag@debian.org>
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# Copyright (c) 2013 Julien Danjou <julien@danjou.info>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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from __future__ import unicode_literals
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from hy import HyString
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from hy.models import HyObject
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from hy.compiler import hy_compile
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from hy.errors import HyCompileError, HyTypeError
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from hy.lex.exceptions import LexException
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from hy.lex import tokenize
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from hy._compat import PY3
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import ast
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def _ast_spotcheck(arg, root, secondary):
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if "." in arg:
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local, full = arg.split(".", 1)
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return _ast_spotcheck(full,
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getattr(root, local),
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getattr(secondary, local))
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assert getattr(root, arg) == getattr(secondary, arg)
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def can_compile(expr):
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return hy_compile(tokenize(expr), "__main__")
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def cant_compile(expr):
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try:
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hy_compile(tokenize(expr), "__main__")
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assert False
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except HyTypeError as e:
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# Anything that can't be compiled should raise a user friendly
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# error, otherwise it's a compiler bug.
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assert isinstance(e.expression, HyObject)
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assert e.message
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return e
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except HyCompileError as e:
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# Anything that can't be compiled should raise a user friendly
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# error, otherwise it's a compiler bug.
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assert isinstance(e.exception, HyTypeError)
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assert e.traceback
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return e
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def test_ast_bad_type():
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"Make sure AST breakage can happen"
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try:
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hy_compile("foo", "__main__")
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assert True is False
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except HyCompileError:
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pass
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def test_ast_bad_if():
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"Make sure AST can't compile invalid if*"
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cant_compile("(if*)")
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cant_compile("(if* foobar)")
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cant_compile("(if* 1 2 3 4 5)")
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def test_ast_valid_if():
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"Make sure AST can compile valid if*"
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can_compile("(if* foo bar)")
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def test_ast_valid_unary_op():
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"Make sure AST can compile valid unary operator"
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can_compile("(not 2)")
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can_compile("(~ 1)")
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def test_ast_invalid_unary_op():
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"Make sure AST can't compile invalid unary operator"
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cant_compile("(not 2 3 4)")
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cant_compile("(not)")
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cant_compile("(not 2 3 4)")
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cant_compile("(~ 2 2 3 4)")
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cant_compile("(~)")
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def test_ast_bad_while():
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"Make sure AST can't compile invalid while"
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cant_compile("(while)")
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cant_compile("(while (true))")
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def test_ast_good_do():
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"Make sure AST can compile valid do"
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can_compile("(do)")
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can_compile("(do 1)")
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def test_ast_good_raise():
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"Make sure AST can compile valid raise"
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can_compile("(raise)")
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can_compile("(raise Exception)")
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can_compile("(raise e)")
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if PY3:
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def test_ast_raise_from():
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can_compile("(raise Exception :from NameError)")
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def test_ast_bad_raise():
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"Make sure AST can't compile invalid raise"
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cant_compile("(raise Exception Exception)")
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def test_ast_good_try():
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"Make sure AST can compile valid try"
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can_compile("(try)")
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can_compile("(try 1)")
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can_compile("(try 1 (except) (else 1))")
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can_compile("(try 1 (else 1) (except))")
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can_compile("(try 1 (finally 1) (except))")
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can_compile("(try 1 (finally 1))")
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can_compile("(try 1 (except) (finally 1))")
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can_compile("(try 1 (except) (finally 1) (else 1))")
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can_compile("(try 1 (except) (else 1) (finally 1))")
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def test_ast_bad_try():
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"Make sure AST can't compile invalid try"
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cant_compile("(try 1 bla)")
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cant_compile("(try 1 bla bla)")
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cant_compile("(try (do) (else 1) (else 2))")
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cant_compile("(try 1 (else 1))")
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def test_ast_good_except():
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"Make sure AST can compile valid except"
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can_compile("(try 1 (except))")
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can_compile("(try 1 (except []))")
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can_compile("(try 1 (except [Foobar]))")
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can_compile("(try 1 (except [[]]))")
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can_compile("(try 1 (except [x FooBar]))")
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can_compile("(try 1 (except [x [FooBar BarFoo]]))")
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can_compile("(try 1 (except [x [FooBar BarFoo]]))")
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def test_ast_bad_except():
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"Make sure AST can't compile invalid except"
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cant_compile("(except 1)")
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cant_compile("(try 1 (except 1))")
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cant_compile("(try 1 (except [1 3]))")
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cant_compile("(try 1 (except [x [FooBar] BarBar]))")
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def test_ast_good_assert():
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"""Make sure AST can compile valid asserts. Asserts may or may not
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include a label."""
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can_compile("(assert 1)")
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can_compile("(assert 1 \"Assert label\")")
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can_compile("(assert 1 (+ \"spam \" \"eggs\"))")
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can_compile("(assert 1 12345)")
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can_compile("(assert 1 nil)")
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can_compile("(assert 1 (+ 2 \"incoming eggsception\"))")
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def test_ast_bad_assert():
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"Make sure AST can't compile invalid assert"
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cant_compile("(assert)")
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cant_compile("(assert 1 2 3)")
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cant_compile("(assert 1 [1 2] 3)")
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def test_ast_good_global():
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"Make sure AST can compile valid global"
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can_compile("(global a)")
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can_compile("(global foo bar)")
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def test_ast_bad_global():
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"Make sure AST can't compile invalid global"
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cant_compile("(global)")
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cant_compile("(global (foo))")
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if PY3:
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def test_ast_good_nonlocal():
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"Make sure AST can compile valid nonlocal"
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can_compile("(nonlocal a)")
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can_compile("(nonlocal foo bar)")
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def test_ast_bad_nonlocal():
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"Make sure AST can't compile invalid nonlocal"
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cant_compile("(nonlocal)")
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cant_compile("(nonlocal (foo))")
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def test_ast_good_defclass():
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"Make sure AST can compile valid defclass"
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can_compile("(defclass a)")
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can_compile("(defclass a [])")
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def test_ast_bad_defclass():
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"Make sure AST can't compile invalid defclass"
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cant_compile("(defclass)")
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cant_compile("(defclass a None)")
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cant_compile("(defclass a None None)")
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def test_ast_good_lambda():
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"Make sure AST can compile valid lambda"
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can_compile("(lambda [])")
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can_compile("(lambda [] 1)")
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def test_ast_bad_lambda():
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"Make sure AST can't compile invalid lambda"
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cant_compile("(lambda)")
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def test_ast_good_yield():
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"Make sure AST can compile valid yield"
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can_compile("(yield 1)")
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def test_ast_bad_yield():
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"Make sure AST can't compile invalid yield"
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cant_compile("(yield 1 2)")
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def test_ast_good_import_from():
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"Make sure AST can compile valid selective import"
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can_compile("(import [x [y]])")
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def test_ast_good_get():
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"Make sure AST can compile valid get"
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can_compile("(get x y)")
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def test_ast_bad_get():
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"Make sure AST can't compile invalid get"
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cant_compile("(get)")
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cant_compile("(get 1)")
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def test_ast_good_cut():
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"Make sure AST can compile valid cut"
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can_compile("(cut x)")
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can_compile("(cut x y)")
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can_compile("(cut x y z)")
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can_compile("(cut x y z t)")
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def test_ast_bad_cut():
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"Make sure AST can't compile invalid cut"
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cant_compile("(cut)")
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cant_compile("(cut 1 2 3 4 5)")
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def test_ast_good_take():
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"Make sure AST can compile valid 'take'"
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can_compile("(take 1 [2 3])")
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def test_ast_good_drop():
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"Make sure AST can compile valid 'drop'"
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can_compile("(drop 1 [2 3])")
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def test_ast_good_assoc():
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"Make sure AST can compile valid assoc"
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can_compile("(assoc x y z)")
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def test_ast_bad_assoc():
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"Make sure AST can't compile invalid assoc"
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cant_compile("(assoc)")
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cant_compile("(assoc 1)")
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cant_compile("(assoc 1 2)")
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cant_compile("(assoc 1 2 3 4)")
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def test_ast_bad_with():
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"Make sure AST can't compile invalid with"
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cant_compile("(with*)")
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cant_compile("(with* [])")
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cant_compile("(with* [] (pass))")
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def test_ast_valid_while():
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"Make sure AST can't compile invalid while"
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can_compile("(while foo bar)")
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def test_ast_valid_for():
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"Make sure AST can compile valid for"
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can_compile("(for [a 2] (print a))")
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def test_ast_invalid_for():
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"Make sure AST can't compile invalid for"
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cant_compile("(for* [a 1] (else 1 2))")
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def test_ast_valid_let():
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"Make sure AST can compile valid let"
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can_compile("(let [a b])")
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can_compile("(let [a 1])")
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can_compile("(let [a 1 b nil])")
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def test_ast_invalid_let():
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"Make sure AST can't compile invalid let"
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cant_compile("(let 1)")
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cant_compile("(let [1])")
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cant_compile("(let [a 1 2])")
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cant_compile("(let [a])")
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cant_compile("(let [1])")
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def test_ast_expression_basics():
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""" Ensure basic AST expression conversion works. """
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code = can_compile("(foo bar)").body[0]
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tree = ast.Expr(value=ast.Call(
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func=ast.Name(
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id="foo",
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ctx=ast.Load(),
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),
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args=[
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ast.Name(id="bar", ctx=ast.Load())
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],
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keywords=[],
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starargs=None,
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kwargs=None,
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))
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_ast_spotcheck("value.func.id", code, tree)
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def test_ast_anon_fns_basics():
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""" Ensure anon fns work. """
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code = can_compile("(fn (x) (* x x))").body[0]
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assert type(code) == ast.FunctionDef
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code = can_compile("(fn (x))").body[0]
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cant_compile("(fn)")
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def test_ast_non_decoratable():
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""" Ensure decorating garbage breaks """
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cant_compile("(with-decorator (foo) (* x x))")
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def test_ast_lambda_lists():
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"""Ensure the compiler chokes on invalid lambda-lists"""
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cant_compile('(fn [&key {"a" b} &key {"foo" bar}] [a foo])')
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cant_compile('(fn [&optional a &key {"foo" bar}] [a foo])')
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cant_compile('(fn [&optional [a b c]] a)')
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cant_compile('(fn [&optional [1 2]] (list 1 2))')
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def test_ast_print():
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code = can_compile("(print \"foo\")").body[0]
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assert type(code.value) == ast.Call
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def test_ast_tuple():
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""" Ensure tuples work. """
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code = can_compile("(, 1 2 3)").body[0].value
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assert type(code) == ast.Tuple
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def test_argument_destructuring():
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""" Ensure argument destructuring compilers. """
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can_compile("(fn [[a b]] (print a b))")
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cant_compile("(fn [[]] 0)")
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def test_lambda_list_keywords_rest():
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""" Ensure we can compile functions with lambda list keywords."""
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can_compile("(fn (x &rest xs) (print xs))")
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cant_compile("(fn (x &rest xs &rest ys) (print xs))")
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def test_lambda_list_keywords_key():
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""" Ensure we can compile functions with &key."""
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can_compile("(fn (x &key {foo True}) (list x foo))")
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cant_compile("(fn (x &key {bar \"baz\"} &key {foo 42}) (list x bar foo))")
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cant_compile("(fn (x &key {1 2 3 4}) (list x))")
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def test_lambda_list_keywords_kwargs():
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""" Ensure we can compile functions with &kwargs."""
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can_compile("(fn (x &kwargs kw) (list x kw))")
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cant_compile("(fn (x &kwargs xs &kwargs ys) (list x xs ys))")
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def test_lambda_list_keywords_kwonly():
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"""Ensure we can compile functions with &kwonly if we're on Python
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3, or fail with an informative message on Python 2."""
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kwonly_demo = "(fn [&kwonly a [b 2]] (print a b))"
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if PY3:
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code = can_compile(kwonly_demo)
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for i, kwonlyarg_name in enumerate(('a', 'b')):
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assert kwonlyarg_name == code.body[0].args.kwonlyargs[i].arg
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assert code.body[0].args.kw_defaults[0] is None
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assert code.body[0].args.kw_defaults[1].n == 2
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else:
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exception = cant_compile(kwonly_demo)
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assert isinstance(exception, HyTypeError)
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message, = exception.args
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assert message == ("keyword-only arguments are only "
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"available under Python 3")
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def test_lambda_list_keywords_mixed():
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""" Ensure we can mix them up."""
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can_compile("(fn (x &rest xs &kwargs kw) (list x xs kw))")
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cant_compile("(fn (x &rest xs &fasfkey {bar \"baz\"}))")
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if PY3:
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can_compile("(fn [x &rest xs &kwargs kwxs &kwonly kwoxs]"
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" (list x xs kwxs kwoxs))")
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def test_missing_keyword_argument_value():
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"""Ensure the compiler chokes on missing keyword argument values."""
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try:
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can_compile("((fn [x] x) :x)")
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except HyTypeError as e:
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assert(e.message == "Keyword argument :x needs a value.")
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else:
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assert(False)
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def test_ast_unicode_strings():
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"""Ensure we handle unicode strings correctly"""
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def _compile_string(s):
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hy_s = HyString(s)
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hy_s.start_line = hy_s.end_line = 0
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hy_s.start_column = hy_s.end_column = 0
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code = hy_compile([hy_s], "__main__")
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# code == ast.Module(body=[ast.Expr(value=ast.Str(s=xxx))])
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return code.body[0].value.s
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assert _compile_string("test") == "test"
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assert _compile_string("\u03b1\u03b2") == "\u03b1\u03b2"
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assert _compile_string("\xc3\xa9") == "\xc3\xa9"
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def test_compile_error():
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"""Ensure we get compile error in tricky cases"""
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try:
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can_compile("(fn [] (in [1 2 3]))")
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except HyTypeError as e:
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assert(e.message == "`in' needs at least 2 arguments, got 1.")
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else:
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assert(False)
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def test_for_compile_error():
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"""Ensure we get compile error in tricky 'for' cases"""
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try:
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can_compile("(fn [] (for)")
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except LexException as e:
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assert(e.message == "Premature end of input")
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else:
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assert(False)
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try:
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can_compile("(fn [] (for)))")
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except LexException as e:
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assert(e.message == "Ran into a RPAREN where it wasn't expected.")
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else:
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assert(False)
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try:
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can_compile("(fn [] (for [x] x))")
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except HyTypeError as e:
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assert(e.message == "`for' requires an even number of args.")
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else:
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assert(False)
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try:
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can_compile("(fn [] (for [x xx]))")
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except HyTypeError as e:
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assert(e.message == "`for' requires a body to evaluate")
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else:
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assert(False)
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try:
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can_compile("(fn [] (for [x xx] (else 1)))")
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except HyTypeError as e:
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assert(e.message == "`for' requires a body to evaluate")
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else:
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assert(False)
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def test_attribute_access():
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"""Ensure attribute access compiles correctly"""
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can_compile("(. foo bar baz)")
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can_compile("(. foo [bar] baz)")
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can_compile("(. foo bar [baz] [0] quux [frob])")
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can_compile("(. foo bar [(+ 1 2 3 4)] quux [frob])")
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cant_compile("(. foo bar :baz [0] quux [frob])")
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cant_compile("(. foo bar baz (0) quux [frob])")
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cant_compile("(. foo bar baz [0] quux {frob})")
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def test_cons_correct():
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"""Ensure cons gets compiled correctly"""
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can_compile("(cons a b)")
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def test_invalid_list_comprehension():
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"""Ensure that invalid list comprehensions do not break the compiler"""
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cant_compile("(genexpr x [])")
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cant_compile("(genexpr [x [1 2 3 4]] x)")
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cant_compile("(list-comp None [])")
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cant_compile("(list-comp [x [1 2 3]] x)")
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def test_bad_setv():
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"""Ensure setv handles error cases"""
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cant_compile("(setv if* 1)")
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cant_compile("(setv (a b) [1 2])")
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def test_defn():
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"""Ensure that defn works correctly in various corner cases"""
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|
cant_compile("(defn if* [] 1)")
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|
cant_compile("(defn \"hy\" [] 1)")
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cant_compile("(defn :hy [] 1)")
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can_compile("(defn &hy [] 1)")
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def test_setv_builtins():
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"""Ensure that assigning to a builtin fails, unless in a class"""
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|
cant_compile("(setv nil 42)")
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|
cant_compile("(defn get [&rest args] 42)")
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|
can_compile("(defclass A [] (defn get [self] 42))")
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|
can_compile("""
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|
(defclass A []
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|
(defn get [self] 42)
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|
(defclass B []
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|
(defn get [self] 42))
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|
(defn if* [self] 0))
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|
""")
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