64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
# Copyright 2019 the authors.
|
|
# This file is part of Hy, which is free software licensed under the Expat
|
|
# license. See the LICENSE.
|
|
|
|
from hy.macros import macro, macroexpand
|
|
from hy.lex import tokenize
|
|
|
|
from hy.models import HyString, HyList, HySymbol, HyExpression, HyFloat
|
|
from hy.errors import HyMacroExpansionError
|
|
|
|
from hy.compiler import HyASTCompiler
|
|
|
|
import pytest
|
|
|
|
|
|
@macro("test")
|
|
def tmac(ETname, *tree):
|
|
""" Turn an expression into a list """
|
|
return HyList(tree)
|
|
|
|
|
|
def test_preprocessor_simple():
|
|
""" Test basic macro expansion """
|
|
obj = macroexpand(tokenize('(test "one" "two")')[0],
|
|
__name__,
|
|
HyASTCompiler(__name__))
|
|
assert obj == HyList(["one", "two"])
|
|
assert type(obj) == HyList
|
|
|
|
|
|
def test_preprocessor_expression():
|
|
""" Test that macro expansion doesn't recurse"""
|
|
obj = macroexpand(tokenize('(test (test "one" "two"))')[0],
|
|
__name__,
|
|
HyASTCompiler(__name__))
|
|
|
|
assert type(obj) == HyList
|
|
assert type(obj[0]) == HyExpression
|
|
|
|
assert obj[0] == HyExpression([HySymbol("test"),
|
|
HyString("one"),
|
|
HyString("two")])
|
|
|
|
obj = HyList([HyString("one"), HyString("two")])
|
|
obj = tokenize('(shill ["one" "two"])')[0][1]
|
|
assert obj == macroexpand(obj, __name__, HyASTCompiler(__name__))
|
|
|
|
|
|
def test_preprocessor_exceptions():
|
|
""" Test that macro expansion raises appropriate exceptions"""
|
|
with pytest.raises(HyMacroExpansionError) as excinfo:
|
|
macroexpand(tokenize('(defn)')[0], __name__, HyASTCompiler(__name__))
|
|
assert "_hy_anon_fn_" not in excinfo.value.message
|
|
assert "TypeError" not in excinfo.value.message
|
|
|
|
|
|
def test_macroexpand_nan():
|
|
# https://github.com/hylang/hy/issues/1574
|
|
import math
|
|
NaN = float('nan')
|
|
x = macroexpand(HyFloat(NaN), __name__, HyASTCompiler(__name__))
|
|
assert type(x) is HyFloat
|
|
assert math.isnan(x)
|