gh-132775: Add _PyCode_GetScriptXIData() (gh-133480)

This converts functions, code, str, bytes, bytearray, and memoryview objects to PyCodeObject,
and ensure that the object looks like a script.  That means no args, no return, and no closure.
_PyCode_GetPureScriptXIData() takes it a step further and ensures there are no globals.

We also add _PyObject_SupportedAsScript() to the internal C-API.

1 files changed, 20 insertions, 0 deletions

diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 4ee287af72f..f67b72aa91f 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1524,6 +1524,26 @@ Py_CompileStringExFlags(const char *str, const char *filename_str, int start,
     return co;
 }
 
+int
+_PyObject_SupportedAsScript(PyObject *cmd)
+{
+    if (PyUnicode_Check(cmd)) {
+        return 1;
+    }
+    else if (PyBytes_Check(cmd)) {
+        return 1;
+    }
+    else if (PyByteArray_Check(cmd)) {
+        return 1;
+    }
+    else if (PyObject_CheckBuffer(cmd)) {
+        return 1;
+    }
+    else {
+        return 0;
+    }
+}
+
 const char *
 _Py_SourceAsString(PyObject *cmd, const char *funcname, const char *what, PyCompilerFlags *cf, PyObject **cmd_copy)
 {