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create NameConstant AST class for None, True, and False literals (closes #16619)

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This commit is contained in:
Benjamin Peterson 2012-12-06 17:41:04 -05:00
parent 4b237e3b11
commit 442f20996d
15 changed files with 152 additions and 72 deletions
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21
Python/compile.c
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@ -3194,12 +3194,18 @@ expr_constant(struct compiler *c, expr_ty e)
case Name_kind:
/* optimize away names that can't be reassigned */
id = PyUnicode_AsUTF8(e->v.Name.id);
if (strcmp(id, "True") == 0) return 1;
if (strcmp(id, "False") == 0) return 0;
if (strcmp(id, "None") == 0) return 0;
if (strcmp(id, "__debug__") == 0)
return ! c->c_optimize;
/* fall through */
if (id && strcmp(id, "__debug__") == 0)
return !c->c_optimize;
return -1;
case NameConstant_kind: {
PyObject *o = e->v.NameConstant.value;
if (o == Py_None)
return 0;
else if (o == Py_True)
return 1;
else if (o == Py_False)
return 0;
}
default:
return -1;
}
@ -3375,6 +3381,9 @@ compiler_visit_expr(struct compiler *c, expr_ty e)
case Ellipsis_kind:
ADDOP_O(c, LOAD_CONST, Py_Ellipsis, consts);
break;
case NameConstant_kind:
ADDOP_O(c, LOAD_CONST, e->v.NameConstant.value, consts);
break;
/* The following exprs can be assignment targets. */
case Attribute_kind:
if (e->v.Attribute.ctx != AugStore)