69 lines
2.1 KiB
Python
69 lines
2.1 KiB
Python
# Copyright 2020 the authors.
|
|
# This file is part of Hy, which is free software licensed under the Expat
|
|
# license. See the LICENSE.
|
|
|
|
import ast
|
|
|
|
from hy import compiler
|
|
from hy.models import HyExpression, HyList, HySymbol, HyInteger
|
|
import types
|
|
|
|
|
|
def make_expression(*args):
|
|
h = HyExpression(args)
|
|
h.start_line = 1
|
|
h.end_line = 1
|
|
h.start_column = 1
|
|
h.end_column = 1
|
|
return h.replace(h)
|
|
|
|
|
|
def test_compiler_bare_names():
|
|
"""
|
|
Check that the compiler doesn't drop bare names from code branches
|
|
"""
|
|
e = make_expression(HySymbol("do"),
|
|
HySymbol("a"),
|
|
HySymbol("b"),
|
|
HySymbol("c"))
|
|
ret = compiler.HyASTCompiler(types.ModuleType('test')).compile(e)
|
|
|
|
# We expect two statements and a final expr.
|
|
|
|
assert len(ret.stmts) == 2
|
|
for stmt, symbol in zip(ret.stmts, "ab"):
|
|
assert isinstance(stmt, ast.Expr)
|
|
assert isinstance(stmt.value, ast.Name)
|
|
assert stmt.value.id == symbol
|
|
|
|
assert isinstance(ret.expr, ast.Name)
|
|
assert ret.expr.id == "c"
|
|
|
|
|
|
def test_compiler_yield_return():
|
|
"""
|
|
Check that the compiler correctly generates return statements for
|
|
a generator function. In Python versions prior to 3.3, the return
|
|
statement in a generator can't take a value, so the final expression
|
|
should not generate a return statement. From 3.3 onwards a return
|
|
value should be generated.
|
|
"""
|
|
e = make_expression(HySymbol("fn"),
|
|
HyList(),
|
|
HyExpression([HySymbol("yield"),
|
|
HyInteger(2)]),
|
|
HyExpression([HySymbol("+"),
|
|
HyInteger(1),
|
|
HyInteger(1)]))
|
|
ret = compiler.HyASTCompiler(types.ModuleType('test')).compile_atom(e)
|
|
|
|
assert len(ret.stmts) == 1
|
|
stmt, = ret.stmts
|
|
assert isinstance(stmt, ast.FunctionDef)
|
|
body = stmt.body
|
|
assert len(body) == 2
|
|
assert isinstance(body[0], ast.Expr)
|
|
assert isinstance(body[0].value, ast.Yield)
|
|
assert isinstance(body[1], ast.Return)
|
|
assert isinstance(body[1].value, ast.BinOp)
|