Update codeop.py from 3.13.5 (RustPython#6026)

Author: ShaharNaveh

Lib/codeop.py

@@ -44,6 +44,7 @@
 # Caveat emptor: These flags are undocumented on purpose and depending
 # on their effect outside the standard library is **unsupported**.
 PyCF_DONT_IMPLY_DEDENT = 0x200
+PyCF_ONLY_AST = 0x400
 PyCF_ALLOW_INCOMPLETE_INPUT = 0x4000
 
 def _maybe_compile(compiler, source, filename, symbol):
@@ -73,23 +74,13 @@ def _maybe_compile(compiler, source, filename, symbol):
 
     return compiler(source, filename, symbol, incomplete_input=False)
 
-def _is_syntax_error(err1, err2):
-    rep1 = repr(err1)
-    rep2 = repr(err2)
-    if "was never closed" in rep1 and "was never closed" in rep2:
-        return False
-    if rep1 == rep2:
-        return True
-    return False
-
 def _compile(source, filename, symbol, incomplete_input=True):
     flags = 0
     if incomplete_input:
         flags |= PyCF_ALLOW_INCOMPLETE_INPUT
         flags |= PyCF_DONT_IMPLY_DEDENT
     return compile(source, filename, symbol, flags)
 
-
 def compile_command(source, filename="<input>", symbol="single"):
     r"""Compile a command and determine whether it is incomplete.
 
@@ -119,12 +110,14 @@ class Compile:
     def __init__(self):
         self.flags = PyCF_DONT_IMPLY_DEDENT | PyCF_ALLOW_INCOMPLETE_INPUT
 
-    def __call__(self, source, filename, symbol, **kwargs):
-        flags = self.flags
+    def __call__(self, source, filename, symbol, flags=0, **kwargs):
+        flags |= self.flags
         if kwargs.get('incomplete_input', True) is False:
             flags &= ~PyCF_DONT_IMPLY_DEDENT
             flags &= ~PyCF_ALLOW_INCOMPLETE_INPUT
         codeob = compile(source, filename, symbol, flags, True)
+        if flags & PyCF_ONLY_AST:
+            return codeob  # this is an ast.Module in this case
         for feature in _features:
             if codeob.co_flags & feature.compiler_flag:
                 self.flags |= feature.compiler_flag

Lib/test/test_codeop.py

@@ -227,6 +227,9 @@ def test_incomplete(self):
         ai("(x for x in")
         ai("(x for x in (")
 
+        ai('a = f"""')
+        ai('a = \\')
+
     def test_invalid(self):
         ai = self.assertInvalid
         ai("a b")
@@ -300,12 +303,11 @@ def test_warning(self):
             warnings.simplefilter('error', SyntaxWarning)
             compile_command(r"'\e'", symbol='exec')
 
-    # TODO: RUSTPYTHON
-    #def test_incomplete_warning(self):
-    #    with warnings.catch_warnings(record=True) as w:
-    #        warnings.simplefilter('always')
-    #        self.assertIncomplete("'\\e' + (")
-    #    self.assertEqual(w, [])
+    def test_incomplete_warning(self):
+        with warnings.catch_warnings(record=True) as w:
+            warnings.simplefilter('always')
+            self.assertIncomplete("'\\e' + (")
+        self.assertEqual(w, [])
 
     # TODO: RUSTPYTHON
     @unittest.expectedFailure