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Issue #24791: Fix grammar regression for call syntax: 'g(*a or b)'.

This commit is contained in:
Yury Selivanov 2015-08-05 17:54:10 -04:00
parent cedef652fa
commit 14acf5f41d
6 changed files with 44 additions and 38 deletions
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2
Grammar/Grammar
View File

@ -137,7 +137,7 @@ arglist: argument (',' argument)* [',']
argument: ( test [comp_for] |
test '=' test |
'**' test |
star_expr )
'*' test )
comp_iter: comp_for | comp_if
comp_for: 'for' exprlist 'in' or_test [comp_iter]

2
Lib/test/test_grammar.py
View File

@ -205,6 +205,8 @@ class GrammarTests(unittest.TestCase):
d01()
d01(1)
d01(*(1,))
d01(*[] or [2])
d01(*() or (), *{} and (), **() or {})
d01(**{'a':2})
d01(**{'a':2} or {})
def d11(a, b=1): pass

2
Misc/NEWS
View File

@ -40,6 +40,8 @@ Library
- Issue #23812: Fix asyncio.Queue.get() to avoid loosing items on cancellation.
Patch by Gustavo J. A. M. Carneiro.
- Issue #24791: Fix grammar regression for call syntax: 'g(*a or b)'.
Documentation
-------------

9
Modules/parsermodule.c
View File

@ -2859,8 +2859,8 @@ validate_arglist(node *tree)
/* argument: ( test [comp_for] |
* test '=' test |
* '**' expr |
* star_expr )
* '**' test |
* '*' test )
*/
static int
validate_argument(node *tree)
@ -2873,8 +2873,11 @@ validate_argument(node *tree)
if (TYPE(CHILD(tree, 0)) == DOUBLESTAR) {
res = validate_test(CHILD(tree, 1));
}
else if (TYPE(CHILD(tree, 0)) == STAR) {
res = validate_test(CHILD(tree, 1));
}
else if (nch == 1) {
res = validate_test_or_star_expr(CHILD(tree, 0));
res = validate_test(CHILD(tree, 0));
}
else if (nch == 2) {
res = (validate_test(CHILD(tree, 0))

65
Python/ast.c
View File

@ -2664,45 +2664,44 @@ ast_for_call(struct compiling *c, const node *n, expr_ty func)
expr_ty e;
node *chch = CHILD(ch, 0);
if (NCH(ch) == 1) {
if (TYPE(chch) == star_expr) {
/* an iterable argument unpacking */
expr_ty starred;
/* a positional argument */
if (nkeywords) {
if (ndoublestars) {
ast_error(c, chch,
"iterable argument unpacking follows "
"positional argument follows "
"keyword argument unpacking");
return NULL;
}
e = ast_for_expr(c, CHILD(chch, 1));
if (!e)
return NULL;
starred = Starred(e, Load, LINENO(chch),
chch->n_col_offset,
c->c_arena);
if (!starred)
return NULL;
asdl_seq_SET(args, nargs++, starred);
}
else {
/* a positional argument */
if (nkeywords) {
if (ndoublestars) {
ast_error(c, chch,
"positional argument follows "
"keyword argument unpacking");
}
else {
ast_error(c, chch,
"positional argument follows "
"keyword argument");
}
return NULL;
else {
ast_error(c, chch,
"positional argument follows "
"keyword argument");
}
e = ast_for_expr(c, chch);
if (!e)
return NULL;
asdl_seq_SET(args, nargs++, e);
return NULL;
}
e = ast_for_expr(c, chch);
if (!e)
return NULL;
asdl_seq_SET(args, nargs++, e);
}
else if (TYPE(chch) == STAR) {
/* an iterable argument unpacking */
expr_ty starred;
if (ndoublestars) {
ast_error(c, chch,
"iterable argument unpacking follows "
"keyword argument unpacking");
return NULL;
}
e = ast_for_expr(c, CHILD(ch, 1));
if (!e)
return NULL;
starred = Starred(e, Load, LINENO(chch),
chch->n_col_offset,
c->c_arena);
if (!starred)
return NULL;
asdl_seq_SET(args, nargs++, starred);
}
else if (TYPE(chch) == DOUBLESTAR) {
/* a keyword argument unpacking */

2
Python/graminit.c
View File

@ -1744,7 +1744,7 @@ static state states_77[3] = {
static arc arcs_78_0[3] = {
{26, 1},
{34, 2},
{50, 3},
{33, 2},
};
static arc arcs_78_1[3] = {
{164, 3},