mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-22 09:45:06 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 13

Implement PEP 380 - 'yield from' (closes #11682)

Browse source
This commit is contained in:
Nick Coghlan 2012-01-13 21:43:40 +10:00
parent e51757f6de
commit 1f7ce62bd6
33 changed files with 872 additions and 421 deletions
Download patch file Download diff file Expand all files Collapse all files

27
Python/Python-ast.c
View file

@ -231,7 +231,9 @@ static char *GeneratorExp_fields[]={
"generators",
};
static PyTypeObject *Yield_type;
_Py_IDENTIFIER(is_from);
static char *Yield_fields[]={
"is_from",
"value",
};
static PyTypeObject *Compare_type;
@ -810,7 +812,7 @@ static int init_types(void)
GeneratorExp_type = make_type("GeneratorExp", expr_type,
GeneratorExp_fields, 2);
if (!GeneratorExp_type) return 0;
Yield_type = make_type("Yield", expr_type, Yield_fields, 1);
Yield_type = make_type("Yield", expr_type, Yield_fields, 2);
if (!Yield_type) return 0;
Compare_type = make_type("Compare", expr_type, Compare_fields, 3);
if (!Compare_type) return 0;
@ -1747,13 +1749,14 @@ GeneratorExp(expr_ty elt, asdl_seq * generators, int lineno, int col_offset,
}
expr_ty
Yield(expr_ty value, int lineno, int col_offset, PyArena *arena)
Yield(int is_from, expr_ty value, int lineno, int col_offset, PyArena *arena)
{
expr_ty p;
p = (expr_ty)PyArena_Malloc(arena, sizeof(*p));
if (!p)
return NULL;
p->kind = Yield_kind;
p->v.Yield.is_from = is_from;
p->v.Yield.value = value;
p->lineno = lineno;
p->col_offset = col_offset;
@ -2795,6 +2798,11 @@ ast2obj_expr(void* _o)
case Yield_kind:
result = PyType_GenericNew(Yield_type, NULL, NULL);
if (!result) goto failed;
value = ast2obj_int(o->v.Yield.is_from);
if (!value) goto failed;
if (PyObject_SetAttrString(result, "is_from", value) == -1)
goto failed;
Py_DECREF(value);
value = ast2obj_expr(o->v.Yield.value);
if (!value) goto failed;
if (_PyObject_SetAttrId(result, &PyId_value, value) == -1)
@ -5337,8 +5345,21 @@ obj2ast_expr(PyObject* obj, expr_ty* out, PyArena* arena)
return 1;
}
if (isinstance) {
int is_from;
expr_ty value;
if (_PyObject_HasAttrId(obj, &PyId_is_from)) {
int res;
tmp = _PyObject_GetAttrId(obj, &PyId_is_from);
if (tmp == NULL) goto failed;
res = obj2ast_int(tmp, &is_from, arena);
if (res != 0) goto failed;
Py_XDECREF(tmp);
tmp = NULL;
} else {
PyErr_SetString(PyExc_TypeError, "required field \"is_from\" missing from Yield");
return 1;
}
if (_PyObject_HasAttrId(obj, &PyId_value)) {
int res;
tmp = _PyObject_GetAttrId(obj, &PyId_value);
@ -5350,7 +5371,7 @@ obj2ast_expr(PyObject* obj, expr_ty* out, PyArena* arena)
} else {
value = NULL;
}
*out = Yield(value, lineno, col_offset, arena);
*out = Yield(is_from, value, lineno, col_offset, arena);
if (*out == NULL) goto failed;
return 0;
}