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Add positional only arguments to grammar

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This commit is contained in:
Dave Halter
2019-06-09 21:14:55 +02:00
parent 1929c144dc
commit ecbe2b9926
2 changed files with 29 additions and 2 deletions
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16
parso/python/grammar38.txt
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@@ -20,13 +20,25 @@ async_funcdef: 'async' funcdef
funcdef: 'def' NAME parameters ['->' test] ':' suite
parameters: '(' [typedargslist] ')'
typedargslist: (tfpdef ['=' test] (',' tfpdef ['=' test])* [',' [
typedargslist: (
(tfpdef ['=' test] (',' tfpdef ['=' test])* ',' '/' [',' [ tfpdef ['=' test] (
',' tfpdef ['=' test])* ([',' [
'*' [tfpdef] (',' tfpdef ['=' test])* [',' ['**' tfpdef [',']]]
| '**' tfpdef [',']]])
| '*' [tfpdef] (',' tfpdef ['=' test])* ([',' ['**' tfpdef [',']]])
| '**' tfpdef [',']]] )
| (tfpdef ['=' test] (',' tfpdef ['=' test])* [',' [
'*' [tfpdef] (',' tfpdef ['=' test])* [',' ['**' tfpdef [',']]]
| '**' tfpdef [',']]]
| '*' [tfpdef] (',' tfpdef ['=' test])* [',' ['**' tfpdef [',']]]
| '**' tfpdef [','])
)
tfpdef: NAME [':' test]
varargslist: (vfpdef ['=' test] (',' vfpdef ['=' test])* [',' [
varargslist: vfpdef ['=' test ](',' vfpdef ['=' test])* ',' '/' [',' [ (vfpdef ['=' test] (',' vfpdef ['=' test])* [',' [
'*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]
| '**' vfpdef [',']]]
| '*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]
| '**' vfpdef [',']) ]] | (vfpdef ['=' test] (',' vfpdef ['=' test])* [',' [
'*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]
| '**' vfpdef [',']]]
| '*' [vfpdef] (',' vfpdef ['=' test])* [',' ['**' vfpdef [',']]]

15
test/test_parser.py
View File

@@ -193,3 +193,18 @@ def test_no_error_nodes(each_version):
def test_named_expression(works_ge_py38):
works_ge_py38.parse("(a := 1, a + 1)")
@pytest.mark.parametrize(
'param_code', [
'a=1, /',
'a, /',
'a=1, /, b=3',
'a, /, b',
'a, /, b',
'a, /, *, b',
'a, /, **kwargs',
]
)
def test_positional_only_arguments(works_ge_py38, param_code):
works_ge_py38.parse("def x(%s): pass" % param_code)