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gh-98831: rewrite pattern matching opcodes in the instruction definition DSL (#101287)

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Irit Katriel 2023-01-24 22:39:13 +00:00 • committed by GitHub
parent f02fa64bf2
commit 1a9d8c750b
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5 changed files with 64 additions and 73 deletions
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57
Python/generated_cases.c.h generated
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@ -2479,59 +2479,60 @@
}
TARGET(MATCH_CLASS) {
PyObject *names = PEEK(1);
PyObject *type = PEEK(2);
PyObject *subject = PEEK(3);
PyObject *attrs;
// Pop TOS and TOS1. Set TOS to a tuple of attributes on success, or
// None on failure.
PyObject *names = POP();
PyObject *type = POP();
PyObject *subject = TOP();
assert(PyTuple_CheckExact(names));
PyObject *attrs = match_class(tstate, subject, type, oparg, names);
Py_DECREF(names);
attrs = match_class(tstate, subject, type, oparg, names);
Py_DECREF(subject);
Py_DECREF(type);
Py_DECREF(names);
if (attrs) {
// Success!
assert(PyTuple_CheckExact(attrs));
SET_TOP(attrs);
}
else if (_PyErr_Occurred(tstate)) {
// Error!
goto error;
assert(PyTuple_CheckExact(attrs)); // Success!
}
else {
// Failure!
SET_TOP(Py_NewRef(Py_None));
if (_PyErr_Occurred(tstate)) goto pop_3_error;
attrs = Py_NewRef(Py_None); // Failure!
}
Py_DECREF(subject);
STACK_SHRINK(2);
POKE(1, attrs);
DISPATCH();
}
TARGET(MATCH_MAPPING) {
PyObject *subject = TOP();
PyObject *subject = PEEK(1);
PyObject *res;
int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_MAPPING;
PyObject *res = match ? Py_True : Py_False;
PUSH(Py_NewRef(res));
res = Py_NewRef(match ? Py_True : Py_False);
STACK_GROW(1);
POKE(1, res);
PREDICT(POP_JUMP_IF_FALSE);
DISPATCH();
}
TARGET(MATCH_SEQUENCE) {
PyObject *subject = TOP();
PyObject *subject = PEEK(1);
PyObject *res;
int match = Py_TYPE(subject)->tp_flags & Py_TPFLAGS_SEQUENCE;
PyObject *res = match ? Py_True : Py_False;
PUSH(Py_NewRef(res));
res = Py_NewRef(match ? Py_True : Py_False);
STACK_GROW(1);
POKE(1, res);
PREDICT(POP_JUMP_IF_FALSE);
DISPATCH();
}
TARGET(MATCH_KEYS) {
PyObject *keys = PEEK(1);
PyObject *subject = PEEK(2);
PyObject *values_or_none;
// On successful match, PUSH(values). Otherwise, PUSH(None).
PyObject *keys = TOP();
PyObject *subject = SECOND();
PyObject *values_or_none = match_keys(tstate, subject, keys);
if (values_or_none == NULL) {
goto error;
}
PUSH(values_or_none);
values_or_none = match_keys(tstate, subject, keys);
if (values_or_none == NULL) goto error;
STACK_GROW(1);
POKE(1, values_or_none);
DISPATCH();
}