intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 96 insertions, 0 deletions

diff --git a/contrib/tools/python3/src/Modules/_opcode.c b/contrib/tools/python3/src/Modules/_opcode.c
new file mode 100644
index 00000000000..42a8732694a
--- /dev/null
+++ b/contrib/tools/python3/src/Modules/_opcode.c
@@ -0,0 +1,96 @@
+#include "Python.h"
+#include "opcode.h"
+
+/*[clinic input]
+module _opcode
+[clinic start generated code]*/
+/*[clinic end generated code: output=da39a3ee5e6b4b0d input=117442e66eb376e6]*/
+
+#include "clinic/_opcode.c.h"
+
+/*[clinic input]
+
+_opcode.stack_effect -> int
+
+  opcode: int
+  oparg: object = None
+  /
+  *
+  jump: object = None
+
+Compute the stack effect of the opcode.
+[clinic start generated code]*/
+
+static int
+_opcode_stack_effect_impl(PyObject *module, int opcode, PyObject *oparg,
+                          PyObject *jump)
+/*[clinic end generated code: output=64a18f2ead954dbb input=461c9d4a44851898]*/
+{
+    int effect;
+    int oparg_int = 0;
+    int jump_int;
+    if (HAS_ARG(opcode)) {
+        if (oparg == Py_None) {
+            PyErr_SetString(PyExc_ValueError,
+                    "stack_effect: opcode requires oparg but oparg was not specified");
+            return -1;
+        }
+        oparg_int = (int)PyLong_AsLong(oparg);
+        if ((oparg_int == -1) && PyErr_Occurred())
+            return -1;
+    }
+    else if (oparg != Py_None) {
+        PyErr_SetString(PyExc_ValueError,
+                "stack_effect: opcode does not permit oparg but oparg was specified");
+        return -1;
+    }
+    if (jump == Py_None) {
+        jump_int = -1;
+    }
+    else if (jump == Py_True) {
+        jump_int = 1;
+    }
+    else if (jump == Py_False) {
+        jump_int = 0;
+    }
+    else {
+        PyErr_SetString(PyExc_ValueError,
+                "stack_effect: jump must be False, True or None");
+        return -1;
+    }
+    effect = PyCompile_OpcodeStackEffectWithJump(opcode, oparg_int, jump_int);
+    if (effect == PY_INVALID_STACK_EFFECT) {
+            PyErr_SetString(PyExc_ValueError,
+                    "invalid opcode or oparg");
+            return -1;
+    }
+    return effect;
+}
+
+
+
+
+static PyMethodDef
+opcode_functions[] =  {
+    _OPCODE_STACK_EFFECT_METHODDEF
+    {NULL, NULL, 0, NULL}
+};
+
+
+static struct PyModuleDef opcodemodule = {
+    PyModuleDef_HEAD_INIT,
+    "_opcode",
+    "Opcode support module.",
+    -1,
+    opcode_functions,
+    NULL,
+    NULL,
+    NULL,
+    NULL
+};
+
+PyMODINIT_FUNC
+PyInit__opcode(void)
+{
+    return PyModule_Create(&opcodemodule);
+}