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Break down some complex functions in pegen.c for readability (GH-25292)

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Pablo Galindo 2021-04-09 00:48:53 +01:00 committed by GitHub
parent c0e11a3ceb
commit 4f642dae4e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 120 additions and 108 deletions
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228
Parser/pegen.c
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@ -1856,6 +1856,117 @@ _get_defaults(Parser *p, asdl_seq *names_with_defaults)
return seq;
}
static int
_make_posonlyargs(Parser *p,
asdl_arg_seq *slash_without_default,
SlashWithDefault *slash_with_default,
asdl_arg_seq **posonlyargs) {
if (slash_without_default != NULL) {
*posonlyargs = slash_without_default;
}
else if (slash_with_default != NULL) {
asdl_arg_seq *slash_with_default_names =
_get_names(p, slash_with_default->names_with_defaults);
if (!slash_with_default_names) {
return -1;
}
*posonlyargs = (asdl_arg_seq*)_PyPegen_join_sequences(
p,
(asdl_seq*)slash_with_default->plain_names,
(asdl_seq*)slash_with_default_names);
}
else {
*posonlyargs = _Py_asdl_arg_seq_new(0, p->arena);
}
return *posonlyargs == NULL ? -1 : 0;
}
static int
_make_posargs(Parser *p,
asdl_arg_seq *plain_names,
asdl_seq *names_with_default,
asdl_arg_seq **posargs) {
if (plain_names != NULL && names_with_default != NULL) {
asdl_arg_seq *names_with_default_names = _get_names(p, names_with_default);
if (!names_with_default_names) {
return -1;
}
*posargs = (asdl_arg_seq*)_PyPegen_join_sequences(
p,(asdl_seq*)plain_names, (asdl_seq*)names_with_default_names);
}
else if (plain_names == NULL && names_with_default != NULL) {
*posargs = _get_names(p, names_with_default);
}
else if (plain_names != NULL && names_with_default == NULL) {
*posargs = plain_names;
}
else {
*posargs = _Py_asdl_arg_seq_new(0, p->arena);
}
return *posargs == NULL ? -1 : 0;
}
static int
_make_posdefaults(Parser *p,
SlashWithDefault *slash_with_default,
asdl_seq *names_with_default,
asdl_expr_seq **posdefaults) {
if (slash_with_default != NULL && names_with_default != NULL) {
asdl_expr_seq *slash_with_default_values =
_get_defaults(p, slash_with_default->names_with_defaults);
if (!slash_with_default_values) {
return -1;
}
asdl_expr_seq *names_with_default_values = _get_defaults(p, names_with_default);
if (!names_with_default_values) {
return -1;
}
*posdefaults = (asdl_expr_seq*)_PyPegen_join_sequences(
p,
(asdl_seq*)slash_with_default_values,
(asdl_seq*)names_with_default_values);
}
else if (slash_with_default == NULL && names_with_default != NULL) {
*posdefaults = _get_defaults(p, names_with_default);
}
else if (slash_with_default != NULL && names_with_default == NULL) {
*posdefaults = _get_defaults(p, slash_with_default->names_with_defaults);
}
else {
*posdefaults = _Py_asdl_expr_seq_new(0, p->arena);
}
return *posdefaults == NULL ? -1 : 0;
}
static int
_make_kwargs(Parser *p, StarEtc *star_etc,
asdl_arg_seq **kwonlyargs,
asdl_expr_seq **kwdefaults) {
if (star_etc != NULL && star_etc->kwonlyargs != NULL) {
*kwonlyargs = _get_names(p, star_etc->kwonlyargs);
}
else {
*kwonlyargs = _Py_asdl_arg_seq_new(0, p->arena);
}
if (*kwonlyargs == NULL) {
return -1;
}
if (star_etc != NULL && star_etc->kwonlyargs != NULL) {
*kwdefaults = _get_defaults(p, star_etc->kwonlyargs);
}
else {
*kwdefaults = _Py_asdl_expr_seq_new(0, p->arena);
}
if (*kwdefaults == NULL) {
return -1;
}
return 0;
}
/* Constructs an arguments_ty object out of all the parsed constructs in the parameters rule */
arguments_ty
_PyPegen_make_arguments(Parser *p, asdl_arg_seq *slash_without_default,
@ -1863,96 +1974,18 @@ _PyPegen_make_arguments(Parser *p, asdl_arg_seq *slash_without_default,
asdl_seq *names_with_default, StarEtc *star_etc)
{
asdl_arg_seq *posonlyargs;
if (slash_without_default != NULL) {
posonlyargs = slash_without_default;
}
else if (slash_with_default != NULL) {
asdl_arg_seq *slash_with_default_names =
_get_names(p, slash_with_default->names_with_defaults);
if (!slash_with_default_names) {
return NULL;
}
posonlyargs = (asdl_arg_seq*)_PyPegen_join_sequences(
p,
(asdl_seq*)slash_with_default->plain_names,
(asdl_seq*)slash_with_default_names);
if (!posonlyargs) {
return NULL;
}
}
else {
posonlyargs = _Py_asdl_arg_seq_new(0, p->arena);
if (!posonlyargs) {
return NULL;
}
if (_make_posonlyargs(p, slash_without_default, slash_with_default, &posonlyargs) == -1) {
return NULL;
}
asdl_arg_seq *posargs;
if (plain_names != NULL && names_with_default != NULL) {
asdl_arg_seq *names_with_default_names = _get_names(p, names_with_default);
if (!names_with_default_names) {
return NULL;
}
posargs = (asdl_arg_seq*)_PyPegen_join_sequences(
p,
(asdl_seq*)plain_names,
(asdl_seq*)names_with_default_names);
if (!posargs) {
return NULL;
}
}
else if (plain_names == NULL && names_with_default != NULL) {
posargs = _get_names(p, names_with_default);
if (!posargs) {
return NULL;
}
}
else if (plain_names != NULL && names_with_default == NULL) {
posargs = plain_names;
}
else {
posargs = _Py_asdl_arg_seq_new(0, p->arena);
if (!posargs) {
return NULL;
}
if (_make_posargs(p, plain_names, names_with_default, &posargs) == -1) {
return NULL;
}
asdl_expr_seq *posdefaults;
if (slash_with_default != NULL && names_with_default != NULL) {
asdl_expr_seq *slash_with_default_values =
_get_defaults(p, slash_with_default->names_with_defaults);
if (!slash_with_default_values) {
return NULL;
}
asdl_expr_seq *names_with_default_values = _get_defaults(p, names_with_default);
if (!names_with_default_values) {
return NULL;
}
posdefaults = (asdl_expr_seq*)_PyPegen_join_sequences(
p,
(asdl_seq*)slash_with_default_values,
(asdl_seq*)names_with_default_values);
if (!posdefaults) {
return NULL;
}
}
else if (slash_with_default == NULL && names_with_default != NULL) {
posdefaults = _get_defaults(p, names_with_default);
if (!posdefaults) {
return NULL;
}
}
else if (slash_with_default != NULL && names_with_default == NULL) {
posdefaults = _get_defaults(p, slash_with_default->names_with_defaults);
if (!posdefaults) {
return NULL;
}
}
else {
posdefaults = _Py_asdl_expr_seq_new(0, p->arena);
if (!posdefaults) {
return NULL;
}
if (_make_posdefaults(p,slash_with_default, names_with_default, &posdefaults) == -1) {
return NULL;
}
arg_ty vararg = NULL;
@ -1961,31 +1994,9 @@ _PyPegen_make_arguments(Parser *p, asdl_arg_seq *slash_without_default,
}
asdl_arg_seq *kwonlyargs;
if (star_etc != NULL && star_etc->kwonlyargs != NULL) {
kwonlyargs = _get_names(p, star_etc->kwonlyargs);
if (!kwonlyargs) {
return NULL;
}
}
else {
kwonlyargs = _Py_asdl_arg_seq_new(0, p->arena);
if (!kwonlyargs) {
return NULL;
}
}
asdl_expr_seq *kwdefaults;
if (star_etc != NULL && star_etc->kwonlyargs != NULL) {
kwdefaults = _get_defaults(p, star_etc->kwonlyargs);
if (!kwdefaults) {
return NULL;
}
}
else {
kwdefaults = _Py_asdl_expr_seq_new(0, p->arena);
if (!kwdefaults) {
return NULL;
}
if (_make_kwargs(p, star_etc, &kwonlyargs, &kwdefaults) == -1) {
return NULL;
}
arg_ty kwarg = NULL;
@ -1997,6 +2008,7 @@ _PyPegen_make_arguments(Parser *p, asdl_arg_seq *slash_without_default,
kwdefaults, kwarg, posdefaults, p->arena);
}
/* Constructs an empty arguments_ty object, that gets used when a function accepts no
* arguments. */
arguments_ty