code/source: remove compiling functions

A lot of complex code that isn't used anymore outside of tests after
the previous commit.

src/_pytest/_code/__init__.py

@@ -7,7 +7,6 @@ from .code import getfslineno
 from .code import getrawcode
 from .code import Traceback
 from .code import TracebackEntry
-from .source import compile_ as compile
 from .source import Source
 
 __all__ = [
@@ -19,6 +18,5 @@ __all__ = [
     "getrawcode",
     "Traceback",
     "TracebackEntry",
-    "compile",
     "Source",
 ]

src/_pytest/_code/source.py

@@ -1,13 +1,9 @@
 import ast
 import inspect
-import linecache
-import sys
 import textwrap
 import tokenize
 import warnings
 from bisect import bisect_right
-from types import CodeType
-from types import FrameType
 from typing import Iterable
 from typing import Iterator
 from typing import List
@@ -15,13 +11,7 @@ from typing import Optional
 from typing import Tuple
 from typing import Union
 
-import py
-
 from _pytest.compat import overload
-from _pytest.compat import TYPE_CHECKING
-
-if TYPE_CHECKING:
-    from typing_extensions import Literal
 
 
 class Source:
@@ -30,8 +20,6 @@ class Source:
     When using Source(...), the source lines are deindented.
     """
 
-    _compilecounter = 0
-
     def __init__(self, obj: object = None) -> None:
         if not obj:
             self.lines = []  # type: List[str]
@@ -122,124 +110,6 @@ class Source:
     def __str__(self) -> str:
         return "\n".join(self.lines)
 
-    @overload
-    def compile(
-        self,
-        filename: Optional[str] = ...,
-        mode: str = ...,
-        flag: "Literal[0]" = ...,
-        dont_inherit: int = ...,
-        _genframe: Optional[FrameType] = ...,
-    ) -> CodeType:
-        raise NotImplementedError()
-
-    @overload  # noqa: F811
-    def compile(  # noqa: F811
-        self,
-        filename: Optional[str] = ...,
-        mode: str = ...,
-        flag: int = ...,
-        dont_inherit: int = ...,
-        _genframe: Optional[FrameType] = ...,
-    ) -> Union[CodeType, ast.AST]:
-        raise NotImplementedError()
-
-    def compile(  # noqa: F811
-        self,
-        filename: Optional[str] = None,
-        mode: str = "exec",
-        flag: int = 0,
-        dont_inherit: int = 0,
-        _genframe: Optional[FrameType] = None,
-    ) -> Union[CodeType, ast.AST]:
-        """ return compiled code object. if filename is None
-            invent an artificial filename which displays
-            the source/line position of the caller frame.
-        """
-        if not filename or py.path.local(filename).check(file=0):
-            if _genframe is None:
-                _genframe = sys._getframe(1)  # the caller
-            fn, lineno = _genframe.f_code.co_filename, _genframe.f_lineno
-            base = "<%d-codegen " % self._compilecounter
-            self.__class__._compilecounter += 1
-            if not filename:
-                filename = base + "%s:%d>" % (fn, lineno)
-            else:
-                filename = base + "%r %s:%d>" % (filename, fn, lineno)
-        source = "\n".join(self.lines) + "\n"
-        try:
-            co = compile(source, filename, mode, flag)
-        except SyntaxError as ex:
-            # re-represent syntax errors from parsing python strings
-            msglines = self.lines[: ex.lineno]
-            if ex.offset:
-                msglines.append(" " * ex.offset + "^")
-            msglines.append("(code was compiled probably from here: %s)" % filename)
-            newex = SyntaxError("\n".join(msglines))
-            newex.offset = ex.offset
-            newex.lineno = ex.lineno
-            newex.text = ex.text
-            raise newex from ex
-        else:
-            if flag & ast.PyCF_ONLY_AST:
-                assert isinstance(co, ast.AST)
-                return co
-            assert isinstance(co, CodeType)
-            lines = [(x + "\n") for x in self.lines]
-            # Type ignored because linecache.cache is private.
-            linecache.cache[filename] = (1, None, lines, filename)  # type: ignore
-            return co
-
-
-#
-# public API shortcut functions
-#
-
-
-@overload
-def compile_(
-    source: Union[str, bytes, ast.mod, ast.AST],
-    filename: Optional[str] = ...,
-    mode: str = ...,
-    flags: "Literal[0]" = ...,
-    dont_inherit: int = ...,
-) -> CodeType:
-    raise NotImplementedError()
-
-
-@overload  # noqa: F811
-def compile_(  # noqa: F811
-    source: Union[str, bytes, ast.mod, ast.AST],
-    filename: Optional[str] = ...,
-    mode: str = ...,
-    flags: int = ...,
-    dont_inherit: int = ...,
-) -> Union[CodeType, ast.AST]:
-    raise NotImplementedError()
-
-
-def compile_(  # noqa: F811
-    source: Union[str, bytes, ast.mod, ast.AST],
-    filename: Optional[str] = None,
-    mode: str = "exec",
-    flags: int = 0,
-    dont_inherit: int = 0,
-) -> Union[CodeType, ast.AST]:
-    """ compile the given source to a raw code object,
-        and maintain an internal cache which allows later
-        retrieval of the source code for the code object
-        and any recursively created code objects.
-    """
-    if isinstance(source, ast.AST):
-        # XXX should Source support having AST?
-        assert filename is not None
-        co = compile(source, filename, mode, flags, dont_inherit)
-        assert isinstance(co, (CodeType, ast.AST))
-        return co
-    _genframe = sys._getframe(1)  # the caller
-    s = Source(source)
-    return s.compile(filename, mode, flags, _genframe=_genframe)
-
 
 #
 # helper functions

testing/code/test_excinfo.py

@@ -127,24 +127,28 @@ class TestTraceback_f_g_h:
         assert s.endswith("raise ValueError")
 
     def test_traceback_entry_getsource_in_construct(self):
-        source = _pytest._code.Source(
-            """\
         def xyz():
             try:
                 raise ValueError
-                except somenoname:
+            except somenoname:  # type: ignore[name-defined] # noqa: F821
                 pass
-            xyz()
+
-            """
-        )
         try:
-            exec(source.compile())
+            xyz()
         except NameError:
-            tb = _pytest._code.ExceptionInfo.from_current().traceback
+            excinfo = _pytest._code.ExceptionInfo.from_current()
-            print(tb[-1].getsource())
+        else:
-            s = str(tb[-1].getsource())
+            assert False, "did not raise NameError"
-            assert s.startswith("def xyz():\n    try:")
+
-            assert s.strip().endswith("except somenoname:")
+        tb = excinfo.traceback
+        source = tb[-1].getsource()
+        assert source is not None
+        assert source.deindent().lines == [
+            "def xyz():",
+            "    try:",
+            "        raise ValueError",
+            "    except somenoname:  # type: ignore[name-defined] # noqa: F821",
+        ]
 
     def test_traceback_cut(self):
         co = _pytest._code.Code(f)
@@ -445,16 +449,6 @@ class TestFormattedExcinfo:
 
         return importasmod
 
-    def excinfo_from_exec(self, source):
-        source = _pytest._code.Source(source).strip()
-        try:
-            exec(source.compile())
-        except KeyboardInterrupt:
-            raise
-        except BaseException:
-            return _pytest._code.ExceptionInfo.from_current()
-        assert 0, "did not raise"
-
     def test_repr_source(self):
         pr = FormattedExcinfo()
         source = _pytest._code.Source(
@@ -471,19 +465,29 @@ class TestFormattedExcinfo:
 
     def test_repr_source_excinfo(self) -> None:
         """ check if indentation is right """
-        pr = FormattedExcinfo()
+        try:
-        excinfo = self.excinfo_from_exec(
+
-            """
             def f():
-                    assert 0
+                1 / 0
+
             f()
-        """
+
-        )
+        except BaseException:
+            excinfo = _pytest._code.ExceptionInfo.from_current()
+        else:
+            assert 0, "did not raise"
+
         pr = FormattedExcinfo()
         source = pr._getentrysource(excinfo.traceback[-1])
         assert source is not None
         lines = pr.get_source(source, 1, excinfo)
-        assert lines == ["    def f():", ">       assert 0", "E       AssertionError"]
+        for line in lines:
+            print(line)
+        assert lines == [
+            "    def f():",
+            ">       1 / 0",
+            "E       ZeroDivisionError: division by zero",
+        ]
 
     def test_repr_source_not_existing(self):
         pr = FormattedExcinfo()

testing/code/test_source.py

@@ -3,6 +3,7 @@
 # or redundant on purpose and can't be disable on a line-by-line basis
 import ast
 import inspect
+import linecache
 import sys
 import textwrap
 from types import CodeType
@@ -33,14 +34,6 @@ def test_source_str_function() -> None:
     assert str(x) == "\n3"
 
 
-def test_unicode() -> None:
-    x = Source("4")
-    assert str(x) == "4"
-    co = _pytest._code.compile('"å"', mode="eval")
-    val = eval(co)
-    assert isinstance(val, str)
-
-
 def test_source_from_function() -> None:
     source = _pytest._code.Source(test_source_str_function)
     assert str(source).startswith("def test_source_str_function() -> None:")
@@ -83,15 +76,6 @@ def test_source_strip_multiline() -> None:
     assert source2.lines == [" hello"]
 
 
-def test_syntaxerror_rerepresentation() -> None:
-    ex = pytest.raises(SyntaxError, _pytest._code.compile, "xyz xyz")
-    assert ex is not None
-    assert ex.value.lineno == 1
-    assert ex.value.offset in {5, 7}  # cpython: 7, pypy3.6 7.1.1: 5
-    assert ex.value.text
-    assert ex.value.text.rstrip("\n") == "xyz xyz"
-
-
 class TestAccesses:
     def setup_class(self) -> None:
         self.source = Source(
@@ -124,7 +108,7 @@ class TestAccesses:
         assert len(values) == 4
 
 
-class TestSourceParsingAndCompiling:
+class TestSourceParsing:
     def setup_class(self) -> None:
         self.source = Source(
             """\
@@ -135,39 +119,6 @@ class TestSourceParsingAndCompiling:
         """
         ).strip()
 
-    def test_compile(self) -> None:
-        co = _pytest._code.compile("x=3")
-        d = {}  # type: Dict[str, Any]
-        exec(co, d)
-        assert d["x"] == 3
-
-    def test_compile_and_getsource_simple(self) -> None:
-        co = _pytest._code.compile("x=3")
-        exec(co)
-        source = _pytest._code.Source(co)
-        assert str(source) == "x=3"
-
-    def test_compile_and_getsource_through_same_function(self) -> None:
-        def gensource(source):
-            return _pytest._code.compile(source)
-
-        co1 = gensource(
-            """
-            def f():
-                raise KeyError()
-        """
-        )
-        co2 = gensource(
-            """
-            def f():
-                raise ValueError()
-        """
-        )
-        source1 = inspect.getsource(co1)
-        assert "KeyError" in source1
-        source2 = inspect.getsource(co2)
-        assert "ValueError" in source2
-
     def test_getstatement(self) -> None:
         # print str(self.source)
         ass = str(self.source[1:])
@@ -264,44 +215,6 @@ class TestSourceParsingAndCompiling:
         source = Source(":")
         pytest.raises(SyntaxError, lambda: source.getstatementrange(0))
 
-    def test_compile_to_ast(self) -> None:
-        source = Source("x = 4")
-        mod = source.compile(flag=ast.PyCF_ONLY_AST)
-        assert isinstance(mod, ast.Module)
-        compile(mod, "<filename>", "exec")
-
-    def test_compile_and_getsource(self) -> None:
-        co = self.source.compile()
-        exec(co, globals())
-        f(7)  # type: ignore
-        excinfo = pytest.raises(AssertionError, f, 6)  # type: ignore
-        assert excinfo is not None
-        frame = excinfo.traceback[-1].frame
-        assert isinstance(frame.code.fullsource, Source)
-        stmt = frame.code.fullsource.getstatement(frame.lineno)
-        assert str(stmt).strip().startswith("assert")
-
-    @pytest.mark.parametrize("name", ["", None, "my"])
-    def test_compilefuncs_and_path_sanity(self, name: Optional[str]) -> None:
-        def check(comp, name) -> None:
-            co = comp(self.source, name)
-            if not name:
-                expected = "codegen %s:%d>" % (mypath, mylineno + 2 + 2)  # type: ignore
-            else:
-                expected = "codegen %r %s:%d>" % (name, mypath, mylineno + 2 + 2)  # type: ignore
-            fn = co.co_filename
-            assert fn.endswith(expected)
-
-        mycode = _pytest._code.Code(self.test_compilefuncs_and_path_sanity)
-        mylineno = mycode.firstlineno
-        mypath = mycode.path
-
-        for comp in _pytest._code.compile, _pytest._code.Source.compile:
-            check(comp, name)
-
-    def test_offsetless_synerr(self):
-        pytest.raises(SyntaxError, _pytest._code.compile, "lambda a,a: 0", mode="eval")
-
 
 def test_getstartingblock_singleline() -> None:
     class A:
@@ -331,18 +244,16 @@ def test_getline_finally() -> None:
 
 
 def test_getfuncsource_dynamic() -> None:
-    source = """
     def f():
         raise ValueError
 
-        def g(): pass
+    def g():
-    """
+        pass
-    co = _pytest._code.compile(source)
+
-    exec(co, globals())
+    f_source = _pytest._code.Source(f)
-    f_source = _pytest._code.Source(f)  # type: ignore
+    g_source = _pytest._code.Source(g)
-    g_source = _pytest._code.Source(g)  # type: ignore
     assert str(f_source).strip() == "def f():\n    raise ValueError"
-    assert str(g_source).strip() == "def g(): pass"
+    assert str(g_source).strip() == "def g():\n    pass"
 
 
 def test_getfuncsource_with_multine_string() -> None:
@@ -405,23 +316,6 @@ def test_getsource_fallback() -> None:
     assert str(src) == expected
 
 
-def test_idem_compile_and_getsource() -> None:
-    from _pytest._code.source import getsource
-
-    expected = "def x(): pass"
-    co = _pytest._code.compile(expected)
-    src = getsource(co)
-    assert str(src) == expected
-
-
-def test_compile_ast() -> None:
-    # We don't necessarily want to support this.
-    # This test was added just for coverage.
-    stmt = ast.parse("def x(): pass")
-    co = _pytest._code.compile(stmt, filename="foo.py")
-    assert isinstance(co, CodeType)
-
-
 def test_findsource_fallback() -> None:
     from _pytest._code.source import findsource
 
@@ -431,15 +325,15 @@ def test_findsource_fallback() -> None:
     assert src[lineno] == "    def x():"
 
 
-def test_findsource() -> None:
+def test_findsource(monkeypatch) -> None:
     from _pytest._code.source import findsource
 
-    co = _pytest._code.compile(
+    filename = "<pytest-test_findsource>"
-        """if 1:
+    lines = ["if 1:\n", "    def x():\n", "          pass\n"]
-    def x():
+    co = compile("".join(lines), filename, "exec")
-        pass
+
-"""
+    # Type ignored because linecache.cache is private.
-    )
+    monkeypatch.setitem(linecache.cache, filename, (1, None, lines, filename))  # type: ignore[attr-defined]
 
     src, lineno = findsource(co)
     assert src is not None