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Implement FormatPatternMatchValue (#6799)

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## Summary

This is effectively #6608, but with additional tests.

We aren't properly handling parenthesized patterns, but that needs to be
dealt with separately as it's somewhat involved.

Closes #6555
This commit is contained in:
Charlie Marsh 2023-08-23 10:01:14 -04:00 • committed by GitHub
parent 4bdd99f882
commit 71c25e4f9d
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 189 additions and 407 deletions
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27
crates/ruff_python_formatter/resources/test/fixtures/ruff/statement/match.py vendored
View file

@ -236,3 +236,30 @@ match foo:
"b",
]:
pass
match foo:
case 1:
y = 0
case (1):
y = 1
case (("a")):
y = 1
case ( # comment
1
):
y = 1
case (
# comment
1
):
y = 1
case (
1 # comment
):
y = 1
case (
1
# comment
):
y = 1

13
crates/ruff_python_formatter/src/pattern/pattern_match_value.rs
View file

@ -1,19 +1,14 @@
use ruff_formatter::{write, Buffer, FormatResult};
use ruff_python_ast::PatternMatchValue;
use crate::{not_yet_implemented_custom_text, FormatNodeRule, PyFormatter};
use crate::prelude::*;
#[derive(Default)]
pub struct FormatPatternMatchValue;
impl FormatNodeRule<PatternMatchValue> for FormatPatternMatchValue {
fn fmt_fields(&self, item: &PatternMatchValue, f: &mut PyFormatter) -> FormatResult<()> {
write!(
f,
[not_yet_implemented_custom_text(
"\"NOT_YET_IMPLEMENTED_PatternMatchValue\"",
item
)]
)
// TODO(charlie): Avoid double parentheses for parenthesized top-level `PatternMatchValue`.
let PatternMatchValue { value, range: _ } = item;
value.format().fmt(f)
}
}

136
crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_310__pattern_matching_complex.py.snap
View file

@ -156,12 +156,7 @@ match x:
```diff
--- Black
+++ Ruff
@@ -2,97 +2,108 @@
# case black_test_patma_098
match x:
- case -0j:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
@@ -6,7 +6,7 @@
y = 0
# case black_test_patma_142
match x:
@ -170,11 +165,7 @@ match x:
y = 0
# case black_test_patma_073
match x:
- case 0 if 0:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue" if 0:
y = 0
- case 0 if 1:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue" if 1:
@@ -16,23 +16,23 @@
y = 1
# case black_test_patma_006
match 3:
@ -204,15 +195,7 @@ match x:
y = 1
case []:
y = 2
# case black_test_patma_107
match x:
- case 0.25 + 1.75j:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
y = 0
# case black_test_patma_097
match x:
- case -0j:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
@@ -46,7 +46,7 @@
y = 0
# case black_test_patma_007
match 4:
@ -221,8 +204,7 @@ match x:
x = True
# case black_test_patma_154
match x:
- case 0 if x:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue" if x:
@@ -54,15 +54,15 @@
y = 0
# case black_test_patma_134
match x:
@ -242,11 +224,7 @@ match x:
y = 0
# case black_test_patma_063
match x:
- case 1:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
y = 0
- case 1:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
@@ -72,11 +72,11 @@
y = 1
# case black_test_patma_248
match x:
@ -256,29 +234,11 @@ match x:
# case black_test_patma_019
match (0, 1, 2):
- case [0, 1, *x, 2]:
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ *NOT_YET_IMPLEMENTED_PatternMatchStar,
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ ]:
+ case [0, 1, *NOT_YET_IMPLEMENTED_PatternMatchStar, 2]:
y = 0
# case black_test_patma_052
match x:
- case [0]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
y = 0
- case [1, 0] if (x := x[:0]):
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ ] if (x := x[:0]):
y = 1
- case [1, 0]:
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ ]:
@@ -88,7 +88,7 @@
y = 2
# case black_test_patma_191
match w:
@ -287,42 +247,7 @@ match x:
z = 0
# case black_test_patma_110
match x:
- case -0.25 - 1.75j:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
y = 0
# case black_test_patma_151
match (x,):
@@ -100,7 +111,7 @@
z = 0
# case black_test_patma_114
match x:
- case A.B.C.D:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
y = 0
# case black_test_patma_232
match x:
@@ -108,7 +119,7 @@
y = 0
# case black_test_patma_058
match x:
- case 0:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
y = 0
# case black_test_patma_233
match x:
@@ -118,9 +129,9 @@
match x:
case []:
y = 0
- case [""]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
y = 1
- case "":
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
y = 2
# case black_test_patma_156
match x:
@@ -128,17 +139,17 @@
@@ -128,17 +128,17 @@
y = 0
# case black_test_patma_189
match w:
@ -353,7 +278,7 @@ match x:
# case black_test_patma_098
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case -0j:
y = 0
# case black_test_patma_142
match x:
@ -361,9 +286,9 @@ match x:
y = 0
# case black_test_patma_073
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if 0:
case 0 if 0:
y = 0
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if 1:
case 0 if 1:
y = 1
# case black_test_patma_006
match 3:
@ -389,11 +314,11 @@ match x:
y = 2
# case black_test_patma_107
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 0.25 + 1.75j:
y = 0
# case black_test_patma_097
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case -0j:
y = 0
# case black_test_patma_007
match 4:
@ -401,7 +326,7 @@ match 4:
x = True
# case black_test_patma_154
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if x:
case 0 if x:
y = 0
# case black_test_patma_134
match x:
@ -417,9 +342,9 @@ match Seq():
y = 0
# case black_test_patma_063
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 1:
y = 0
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 1:
y = 1
# case black_test_patma_248
match x:
@ -427,26 +352,15 @@ match x:
y = bar
# case black_test_patma_019
match (0, 1, 2):
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
*NOT_YET_IMPLEMENTED_PatternMatchStar,
"NOT_YET_IMPLEMENTED_PatternMatchValue",
]:
case [0, 1, *NOT_YET_IMPLEMENTED_PatternMatchStar, 2]:
y = 0
# case black_test_patma_052
match x:
case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
case [0]:
y = 0
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
] if (x := x[:0]):
case [1, 0] if (x := x[:0]):
y = 1
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
]:
case [1, 0]:
y = 2
# case black_test_patma_191
match w:
@ -454,7 +368,7 @@ match w:
z = 0
# case black_test_patma_110
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case -0.25 - 1.75j:
y = 0
# case black_test_patma_151
match (x,):
@ -462,7 +376,7 @@ match (x,):
z = 0
# case black_test_patma_114
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case A.B.C.D:
y = 0
# case black_test_patma_232
match x:
@ -470,7 +384,7 @@ match x:
y = 0
# case black_test_patma_058
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 0:
y = 0
# case black_test_patma_233
match x:
@ -480,9 +394,9 @@ match x:
match x:
case []:
y = 0
case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
case [""]:
y = 1
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "":
y = 2
# case black_test_patma_156
match x:

74
crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_310__pattern_matching_extras.py.snap
View file

@ -152,7 +152,7 @@ match bar1:
pass
case match:
pass
@@ -23,32 +23,47 @@
@@ -23,7 +23,7 @@
def func(match: case, case: match) -> case:
match Something():
@ -161,38 +161,29 @@ match bar1:
...
case another:
...
@@ -32,23 +32,32 @@
match maybe, multiple:
- case perhaps, 5:
+ case perhaps, "NOT_YET_IMPLEMENTED_PatternMatchValue":
case perhaps, 5:
pass
- case perhaps, 6,:
+ case (
+ perhaps,
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ 6,
+ ):
pass
-match more := (than, one), indeed,:
- case _, (5, 6):
+match (
+ more := (than, one),
+ indeed,
+):
+ case _, (
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ ):
case _, (5, 6):
pass
- case [[5], (6)], [7],:
+ case [
+ [
+ ["NOT_YET_IMPLEMENTED_PatternMatchValue"],
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ ],
+ ["NOT_YET_IMPLEMENTED_PatternMatchValue"],
+ [[5], (6)],
+ [7],
+ ]:
pass
case _:
@ -208,7 +199,7 @@ match bar1:
assert "map" == b
@@ -59,12 +74,7 @@
@@ -59,12 +68,7 @@
),
case,
):
@ -222,7 +213,7 @@ match bar1:
pass
case [a as match]:
@@ -80,40 +90,43 @@
@@ -80,17 +84,14 @@
match a, *b(), c:
@ -243,22 +234,14 @@ match bar1:
pass
match something:
- case 1 as a:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue" as a:
pass
- case 2 as b, 3 as c:
+ case (
+ "NOT_YET_IMPLEMENTED_PatternMatchValue" as b,
+ "NOT_YET_IMPLEMENTED_PatternMatchValue" as c,
+ ):
@@ -101,19 +102,22 @@
case 2 as b, 3 as c:
pass
- case 4 as d, (5 as e), (6 | 7 as g), *h:
+ case (
+ "NOT_YET_IMPLEMENTED_PatternMatchValue" as d,
+ "NOT_YET_IMPLEMENTED_PatternMatchValue" as e,
+ 4 as d,
+ 5 as e,
+ NOT_YET_IMPLEMENTED_PatternMatchOf | (y) as g,
+ *NOT_YET_IMPLEMENTED_PatternMatchStar,
+ ):
@ -316,11 +299,11 @@ def func(match: case, case: match) -> case:
match maybe, multiple:
case perhaps, "NOT_YET_IMPLEMENTED_PatternMatchValue":
case perhaps, 5:
pass
case (
perhaps,
"NOT_YET_IMPLEMENTED_PatternMatchValue",
6,
):
pass
@ -329,17 +312,11 @@ match (
more := (than, one),
indeed,
):
case _, (
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
):
case _, (5, 6):
pass
case [
[
["NOT_YET_IMPLEMENTED_PatternMatchValue"],
"NOT_YET_IMPLEMENTED_PatternMatchValue",
],
["NOT_YET_IMPLEMENTED_PatternMatchValue"],
[[5], (6)],
[7],
]:
pass
case _:
@ -388,18 +365,15 @@ match something:
match something:
case "NOT_YET_IMPLEMENTED_PatternMatchValue" as a:
case 1 as a:
pass
case 2 as b, 3 as c:
pass
case (
"NOT_YET_IMPLEMENTED_PatternMatchValue" as b,
"NOT_YET_IMPLEMENTED_PatternMatchValue" as c,
):
pass
case (
"NOT_YET_IMPLEMENTED_PatternMatchValue" as d,
"NOT_YET_IMPLEMENTED_PatternMatchValue" as e,
4 as d,
5 as e,
NOT_YET_IMPLEMENTED_PatternMatchOf | (y) as g,
*NOT_YET_IMPLEMENTED_PatternMatchStar,
):

11
crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_310__pattern_matching_generic.py.snap
View file

@ -128,15 +128,6 @@ with match() as match:
y = 0
self.assertIs(x, False)
self.assertEqual(y, 0)
@@ -73,7 +73,7 @@
x = 0
y = None
match x:
- case 1e1000:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
y = 0
self.assertEqual(x, 0)
self.assertIs(y, None)
```
## Ruff Output
@ -217,7 +208,7 @@ def get_grammars(target_versions: Set[TargetVersion]) -> List[Grammar]:
x = 0
y = None
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 1e1000:
y = 0
self.assertEqual(x, 0)
self.assertIs(y, None)

94
crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_310__pattern_matching_simple.py.snap
View file

@ -104,47 +104,21 @@ def where_is(point):
```diff
--- Black
+++ Ruff
@@ -11,82 +11,97 @@
... # interpret action, obj
match command.split():
- case ["quit"]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
print("Goodbye!")
quit_game()
- case ["look"]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
current_room.describe()
- case ["get", obj]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue", obj]:
character.get(obj, current_room)
- case ["go", direction]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue", direction]:
current_room = current_room.neighbor(direction)
@@ -23,7 +23,7 @@
# The rest of your commands go here
match command.split():
- case ["drop", *objects]:
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ *NOT_YET_IMPLEMENTED_PatternMatchStar,
+ ]:
+ case ["drop", *NOT_YET_IMPLEMENTED_PatternMatchStar]:
for obj in objects:
character.drop(obj, current_room)
# The rest of your commands go here
match command.split():
- case ["quit"]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
@@ -33,24 +33,24 @@
pass
- case ["go", direction]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue", direction]:
case ["go", direction]:
print("Going:", direction)
- case ["drop", *objects]:
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ *NOT_YET_IMPLEMENTED_PatternMatchStar,
+ ]:
+ case ["drop", *NOT_YET_IMPLEMENTED_PatternMatchStar]:
print("Dropping: ", *objects)
case _:
print(f"Sorry, I couldn't understand {command!r}")
@ -159,30 +133,17 @@ def where_is(point):
match command.split():
- case ["go", ("north" | "south" | "east" | "west")]:
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ NOT_YET_IMPLEMENTED_PatternMatchOf | (y),
+ ]:
+ case ["go", NOT_YET_IMPLEMENTED_PatternMatchOf | (y)]:
current_room = current_room.neighbor(...)
# how do I know which direction to go?
match command.split():
- case ["go", ("north" | "south" | "east" | "west") as direction]:
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ NOT_YET_IMPLEMENTED_PatternMatchOf | (y) as direction,
+ ]:
+ case ["go", NOT_YET_IMPLEMENTED_PatternMatchOf | (y) as direction]:
current_room = current_room.neighbor(direction)
match command.split():
- case ["go", direction] if direction in current_room.exits:
+ case [
+ "NOT_YET_IMPLEMENTED_PatternMatchValue",
+ direction,
+ ] if direction in current_room.exits:
current_room = current_room.neighbor(direction)
- case ["go", _]:
+ case ["NOT_YET_IMPLEMENTED_PatternMatchValue", _]:
@@ -60,33 +60,33 @@
print("Sorry, you can't go that way")
match event.get():
@ -244,35 +205,29 @@ match command.split():
... # interpret action, obj
match command.split():
case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
case ["quit"]:
print("Goodbye!")
quit_game()
case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
case ["look"]:
current_room.describe()
case ["NOT_YET_IMPLEMENTED_PatternMatchValue", obj]:
case ["get", obj]:
character.get(obj, current_room)
case ["NOT_YET_IMPLEMENTED_PatternMatchValue", direction]:
case ["go", direction]:
current_room = current_room.neighbor(direction)
# The rest of your commands go here
match command.split():
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
*NOT_YET_IMPLEMENTED_PatternMatchStar,
]:
case ["drop", *NOT_YET_IMPLEMENTED_PatternMatchStar]:
for obj in objects:
character.drop(obj, current_room)
# The rest of your commands go here
match command.split():
case ["NOT_YET_IMPLEMENTED_PatternMatchValue"]:
case ["quit"]:
pass
case ["NOT_YET_IMPLEMENTED_PatternMatchValue", direction]:
case ["go", direction]:
print("Going:", direction)
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
*NOT_YET_IMPLEMENTED_PatternMatchStar,
]:
case ["drop", *NOT_YET_IMPLEMENTED_PatternMatchStar]:
print("Dropping: ", *objects)
case _:
print(f"Sorry, I couldn't understand {command!r}")
@ -284,27 +239,18 @@ match command.split():
... # Code for picking up the given object
match command.split():
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
NOT_YET_IMPLEMENTED_PatternMatchOf | (y),
]:
case ["go", NOT_YET_IMPLEMENTED_PatternMatchOf | (y)]:
current_room = current_room.neighbor(...)
# how do I know which direction to go?
match command.split():
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
NOT_YET_IMPLEMENTED_PatternMatchOf | (y) as direction,
]:
case ["go", NOT_YET_IMPLEMENTED_PatternMatchOf | (y) as direction]:
current_room = current_room.neighbor(direction)
match command.split():
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
direction,
] if direction in current_room.exits:
case ["go", direction] if direction in current_room.exits:
current_room = current_room.neighbor(direction)
case ["NOT_YET_IMPLEMENTED_PatternMatchValue", _]:
case ["go", _]:
print("Sorry, you can't go that way")
match event.get():

90
crates/ruff_python_formatter/tests/snapshots/black_compatibility@py_310__remove_newline_after_match.py.snap
View file

@ -1,90 +0,0 @@
---
source: crates/ruff_python_formatter/tests/fixtures.rs
input_file: crates/ruff_python_formatter/resources/test/fixtures/black/py_310/remove_newline_after_match.py
---
## Input
```py
def http_status(status):
match status:
case 400:
return "Bad request"
case 401:
return "Unauthorized"
case 403:
return "Forbidden"
case 404:
return "Not found"
```
## Black Differences
```diff
--- Black
+++ Ruff
@@ -1,13 +1,13 @@
def http_status(status):
match status:
- case 400:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Bad request"
- case 401:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Unauthorized"
- case 403:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Forbidden"
- case 404:
+ case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Not found"
```
## Ruff Output
```py
def http_status(status):
match status:
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Bad request"
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Unauthorized"
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Forbidden"
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
return "Not found"
```
## Black Output
```py
def http_status(status):
match status:
case 400:
return "Bad request"
case 401:
return "Unauthorized"
case 403:
return "Forbidden"
case 404:
return "Not found"
```

10
crates/ruff_python_formatter/tests/snapshots/format@fmt_skip__match.py.snap
View file

@ -85,9 +85,9 @@ def http_error(status):
match status : # fmt: skip
case 400 : # fmt: skip
return "Bad request"
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 404:
return "Not found"
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 418:
return "I'm a teapot"
case _:
return "Something's wrong with the internet"
@ -97,9 +97,9 @@ def http_error(status):
match point:
case (0, 0): # fmt: skip
print("Origin")
case ("NOT_YET_IMPLEMENTED_PatternMatchValue", y):
case (0, y):
print(f"Y={y}")
case (x, "NOT_YET_IMPLEMENTED_PatternMatchValue"):
case (x, 0):
print(f"X={x}")
case (x, y):
print(f"X={x}, Y={y}")
@ -151,7 +151,7 @@ match test_variable:
40
): # fmt: skip
print("A warning has been received.")
case ("NOT_YET_IMPLEMENTED_PatternMatchValue", code, _):
case ("error", code, _):
print(f"An error {code} occurred.")

6
crates/ruff_python_formatter/tests/snapshots/format@statement__ellipsis.pyi.snap
View file

@ -164,11 +164,11 @@ with True:
with True: ... # comment
match x:
case "NOT_YET_IMPLEMENTED_PatternMatchValue": ...
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case 1: ...
case 2:
# comment
...
case "NOT_YET_IMPLEMENTED_PatternMatchValue": ... # comment
case 3: ... # comment
try: ...
except: ...

135
crates/ruff_python_formatter/tests/snapshots/format@statement__match.py.snap
View file

@ -242,13 +242,40 @@ match foo:
"b",
]:
pass
match foo:
case 1:
y = 0
case (1):
y = 1
case (("a")):
y = 1
case ( # comment
1
):
y = 1
case (
# comment
1
):
y = 1
case (
1 # comment
):
y = 1
case (
1
# comment
):
y = 1
```
## Output
```py
# leading match comment
match foo: # dangling match comment
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "bar":
pass
@ -258,7 +285,7 @@ match ( # leading expr comment
foo # trailing expr comment
# another trailing expr comment
): # dangling match comment
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "bar":
pass
@ -266,7 +293,7 @@ match ( # leading expr comment
match ( # hello
foo, # trailing expr comment # another
): # dangling match comment
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "bar":
pass
@ -275,21 +302,13 @@ match [ # comment
second,
third,
]: # another comment
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
]:
case ["a", "b", "c"]:
pass
match ( # comment
"a b c"
).split(): # another comment
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
]:
case ["a", "b", "c"]:
pass
@ -297,69 +316,62 @@ match ( # comment
# let's go
yield foo
): # another comment
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
]:
case ["a", "b", "c"]:
pass
match aaaaaaaaahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh: # comment
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "sshhhhhhhh":
pass
def foo():
match inside_func: # comment
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "bar":
pass
match newlines:
# case 1 leading comment
case "NOT_YET_IMPLEMENTED_PatternMatchValue": # case dangling comment
case "top level case comment with newlines": # case dangling comment
# pass leading comment
pass
# pass trailing comment
# case 2 leading comment
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if foo == 2: # second
case "case comment with newlines" if foo == 2: # second
pass
case (
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
) if (foo := 1): # third
case "one", "newline" if (foo := 1): # third
pass
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "two newlines":
pass
case "NOT_YET_IMPLEMENTED_PatternMatchValue":
case "three newlines":
pass
case _:
pass
match long_lines:
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if aaaaaaaaahhhhhhhh == 1 and bbbbbbaaaaaaaaaaa == 2: # comment
case "this is a long line for if condition" if aaaaaaaaahhhhhhhh == 1 and bbbbbbaaaaaaaaaaa == 2: # comment
pass
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if (
case "this is a long line for if condition with parentheses" if (
aaaaaaaaahhhhhhhh == 1 and bbbbbbaaaaaaaaaaa == 2
): # comment
pass
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if foo := 1:
case "named expressions aren't special" if foo := 1:
pass
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if (foo := 1):
case "named expressions aren't that special" if (foo := 1):
pass
case "NOT_YET_IMPLEMENTED_PatternMatchValue" if (
case "but with already broken long lines" if (
aaaaaaahhhhhhhhhhh == 1 and bbbbbbbbaaaaaahhhh == 2
): # another comment
pass
@ -465,32 +477,18 @@ match pattern_singleton:
match foo:
case (
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
):
case "a", "b":
pass
case (
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"a",
"b",
):
pass
case (
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
):
case ("a", "b"):
pass
case [
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
]:
case ["a", "b"]:
pass
case (
[
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"NOT_YET_IMPLEMENTED_PatternMatchValue",
]
):
case (["a", "b"]):
pass
@ -500,13 +498,40 @@ match foo:
# leading
# leading
# leading
"NOT_YET_IMPLEMENTED_PatternMatchValue", # trailing
"a", # trailing
# trailing
# trailing
# trailing
"NOT_YET_IMPLEMENTED_PatternMatchValue",
"b",
]:
pass
match foo:
case 1:
y = 0
case ((1)):
y = 1
case (("a")):
y = 1
case ( # comment
(1)
):
y = 1
case (
# comment
(1)
):
y = 1
case (
(1) # comment
):
y = 1
case (
(1)
# comment
):
y = 1
```