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bpo-41746: Add type information to asdl_seq objects (GH-22223)

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* Add new capability to the PEG parser to type variable assignments. For instance:
```
       | a[asdl_stmt_seq*]=';'.small_stmt+ [';'] NEWLINE { a }
```

* Add new sequence types from the asdl definition (automatically generated)
* Make `asdl_seq` type a generic aliasing pointer type.
* Create a new `asdl_generic_seq` for the generic case using `void*`.
* The old `asdl_seq_GET`/`ast_seq_SET` macros now are typed.
* New `asdl_seq_GET_UNTYPED`/`ast_seq_SET_UNTYPED` macros for dealing with generic sequences.
* Changes all possible `asdl_seq` types to use specific versions everywhere.
This commit is contained in:
Pablo Galindo 2020-09-16 19:42:00 +01:00 • committed by GitHub
parent 5c1b46d897
commit a5634c4067
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22 changed files with 1338 additions and 1086 deletions
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Python/future.c
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@ -13,11 +13,10 @@ static int
future_check_features(PyFutureFeatures *ff, stmt_ty s, PyObject *filename)
{
int i;
asdl_seq *names;
assert(s->kind == ImportFrom_kind);
names = s->v.ImportFrom.names;
asdl_alias_seq *names = s->v.ImportFrom.names;
for (i = 0; i < asdl_seq_LEN(names); i++) {
alias_ty name = (alias_ty)asdl_seq_GET(names, i);
const char *feature = PyUnicode_AsUTF8(name->name);