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---
source: crates/ruff_python_parser/tests/fixtures.rs
input_file: crates/ruff_python_parser/resources/inline/err/async_unexpected_token.py
---
## AST
```
Module(
ModModule {
node_index: NodeIndex(None),
range: 0..116,
body: [
ClassDef(
StmtClassDef {
node_index: NodeIndex(None),
range: 6..20,
decorator_list: [],
name: Identifier {
id: Name("Foo"),
range: 12..15,
node_index: NodeIndex(None),
},
type_params: None,
arguments: None,
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 17..20,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 17..20,
},
),
},
),
],
},
),
While(
StmtWhile {
node_index: NodeIndex(None),
range: 27..42,
test: Name(
ExprName {
node_index: NodeIndex(None),
range: 33..37,
id: Name("test"),
ctx: Load,
},
),
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 39..42,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 39..42,
},
),
},
),
],
orelse: [],
},
),
Assign(
StmtAssign {
node_index: NodeIndex(None),
range: 49..54,
targets: [
Name(
ExprName {
node_index: NodeIndex(None),
range: 49..50,
id: Name("x"),
ctx: Store,
},
),
],
value: NumberLiteral(
ExprNumberLiteral {
node_index: NodeIndex(None),
range: 53..54,
value: Int(
1,
),
},
),
},
),
FunctionDef(
StmtFunctionDef {
node_index: NodeIndex(None),
range: 61..81,
is_async: true,
decorator_list: [],
name: Identifier {
id: Name("foo"),
range: 71..74,
node_index: NodeIndex(None),
},
type_params: None,
parameters: Parameters {
range: 74..76,
node_index: NodeIndex(None),
posonlyargs: [],
args: [],
vararg: None,
kwonlyargs: [],
kwarg: None,
},
returns: None,
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 78..81,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 78..81,
},
),
},
),
],
},
),
Match(
StmtMatch {
node_index: NodeIndex(None),
range: 88..115,
subject: Name(
ExprName {
node_index: NodeIndex(None),
range: 94..98,
id: Name("test"),
ctx: Load,
},
),
cases: [
MatchCase {
range: 104..115,
node_index: NodeIndex(None),
pattern: MatchAs(
PatternMatchAs {
node_index: NodeIndex(None),
range: 109..110,
pattern: None,
name: None,
},
),
guard: None,
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 112..115,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 112..115,
},
),
},
),
],
},
],
},
),
],
},
)
```
## Errors
|
1 | async class Foo: ...
| ^^^^^ Syntax Error: Expected `def`, `with` or `for` to follow `async`, found `class`
2 | async while test: ...
3 | async x = 1
|
|
1 | async class Foo: ...
2 | async while test: ...
| ^^^^^ Syntax Error: Expected `def`, `with` or `for` to follow `async`, found `while`
3 | async x = 1
4 | async async def foo(): ...
|
|
1 | async class Foo: ...
2 | async while test: ...
3 | async x = 1
| ^ Syntax Error: Expected `def`, `with` or `for` to follow `async`, found name
4 | async async def foo(): ...
5 | async match test:
|
|
2 | async while test: ...
3 | async x = 1
4 | async async def foo(): ...
| ^^^^^ Syntax Error: Expected `def`, `with` or `for` to follow `async`, found `async`
5 | async match test:
6 | case _: ...
|
|
3 | async x = 1
4 | async async def foo(): ...
5 | async match test:
| ^^^^^ Syntax Error: Expected `def`, `with` or `for` to follow `async`, found `match`
6 | case _: ...
|