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Issue #28003: Implement PEP 525 -- Asynchronous Generators.

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This commit is contained in:
Yury Selivanov 2016-09-08 22:01:51 -07:00
parent b96ef55d49
commit eb6364557f
27 changed files with 2189 additions and 96 deletions
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13
Python/compile.c
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@ -1886,8 +1886,6 @@ compiler_function(struct compiler *c, stmt_ty s, int is_async)
return 0;
}
if (is_async)
co->co_flags |= CO_COROUTINE;
compiler_make_closure(c, co, funcflags, qualname);
Py_DECREF(qualname);
Py_DECREF(co);
@ -2801,6 +2799,9 @@ compiler_visit_stmt(struct compiler *c, stmt_ty s)
if (c->u->u_ste->ste_type != FunctionBlock)
return compiler_error(c, "'return' outside function");
if (s->v.Return.value) {
if (c->u->u_ste->ste_coroutine && c->u->u_ste->ste_generator)
return compiler_error(
c, "'return' with value in async generator");
VISIT(c, expr, s->v.Return.value);
}
else
@ -4115,8 +4116,6 @@ compiler_visit_expr(struct compiler *c, expr_ty e)
case Yield_kind:
if (c->u->u_ste->ste_type != FunctionBlock)
return compiler_error(c, "'yield' outside function");
if (c->u->u_scope_type == COMPILER_SCOPE_ASYNC_FUNCTION)
return compiler_error(c, "'yield' inside async function");
if (e->v.Yield.value) {
VISIT(c, expr, e->v.Yield.value);
}
@ -4992,8 +4991,12 @@ compute_code_flags(struct compiler *c)
flags |= CO_NEWLOCALS | CO_OPTIMIZED;
if (ste->ste_nested)
flags |= CO_NESTED;
if (ste->ste_generator)
if (ste->ste_generator && !ste->ste_coroutine)
flags |= CO_GENERATOR;
if (!ste->ste_generator && ste->ste_coroutine)
flags |= CO_COROUTINE;
if (ste->ste_generator && ste->ste_coroutine)
flags |= CO_ASYNC_GENERATOR;
if (ste->ste_varargs)
flags |= CO_VARARGS;
if (ste->ste_varkeywords)