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---
source: crates/ruff_python_parser/tests/fixtures.rs
input_file: crates/ruff_python_parser/resources/inline/err/match_stmt_invalid_guard_expr.py
---
## AST
```
Module(
ModModule {
node_index: NodeIndex(None),
range: 0..100,
body: [
Match(
StmtMatch {
node_index: NodeIndex(None),
range: 0..30,
subject: Name(
ExprName {
node_index: NodeIndex(None),
range: 6..7,
id: Name("x"),
ctx: Load,
},
),
cases: [
MatchCase {
range: 13..30,
node_index: NodeIndex(None),
pattern: MatchAs(
PatternMatchAs {
node_index: NodeIndex(None),
range: 18..19,
pattern: None,
name: Some(
Identifier {
id: Name("y"),
range: 18..19,
node_index: NodeIndex(None),
},
),
},
),
guard: Some(
Starred(
ExprStarred {
node_index: NodeIndex(None),
range: 23..25,
value: Name(
ExprName {
node_index: NodeIndex(None),
range: 24..25,
id: Name("a"),
ctx: Load,
},
),
ctx: Load,
},
),
),
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 27..30,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 27..30,
},
),
},
),
],
},
],
},
),
Match(
StmtMatch {
node_index: NodeIndex(None),
range: 31..63,
subject: Name(
ExprName {
node_index: NodeIndex(None),
range: 37..38,
id: Name("x"),
ctx: Load,
},
),
cases: [
MatchCase {
range: 44..63,
node_index: NodeIndex(None),
pattern: MatchAs(
PatternMatchAs {
node_index: NodeIndex(None),
range: 49..50,
pattern: None,
name: Some(
Identifier {
id: Name("y"),
range: 49..50,
node_index: NodeIndex(None),
},
),
},
),
guard: Some(
Starred(
ExprStarred {
node_index: NodeIndex(None),
range: 55..57,
value: Name(
ExprName {
node_index: NodeIndex(None),
range: 56..57,
id: Name("a"),
ctx: Load,
},
),
ctx: Load,
},
),
),
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 60..63,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 60..63,
},
),
},
),
],
},
],
},
),
Match(
StmtMatch {
node_index: NodeIndex(None),
range: 64..99,
subject: Name(
ExprName {
node_index: NodeIndex(None),
range: 70..71,
id: Name("x"),
ctx: Load,
},
),
cases: [
MatchCase {
range: 77..99,
node_index: NodeIndex(None),
pattern: MatchAs(
PatternMatchAs {
node_index: NodeIndex(None),
range: 82..83,
pattern: None,
name: Some(
Identifier {
id: Name("y"),
range: 82..83,
node_index: NodeIndex(None),
},
),
},
),
guard: Some(
Yield(
ExprYield {
node_index: NodeIndex(None),
range: 87..94,
value: Some(
Name(
ExprName {
node_index: NodeIndex(None),
range: 93..94,
id: Name("x"),
ctx: Load,
},
),
),
},
),
),
body: [
Expr(
StmtExpr {
node_index: NodeIndex(None),
range: 96..99,
value: EllipsisLiteral(
ExprEllipsisLiteral {
node_index: NodeIndex(None),
range: 96..99,
},
),
},
),
],
},
],
},
),
],
},
)
```
## Errors
|
1 | match x:
2 | case y if *a: ...
| ^^ Syntax Error: Starred expression cannot be used here
3 | match x:
4 | case y if (*a): ...
|
|
2 | case y if *a: ...
3 | match x:
4 | case y if (*a): ...
| ^^ Syntax Error: Starred expression cannot be used here
5 | match x:
6 | case y if yield x: ...
|
|
4 | case y if (*a): ...
5 | match x:
6 | case y if yield x: ...
| ^^^^^^^ Syntax Error: Yield expression cannot be used here
|