mirror of
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Implement re-lexing logic for better error recovery (#11845)
## Summary This PR implements the re-lexing logic in the parser. This logic is only applied when recovering from an error during list parsing. The logic is as follows: 1. During list parsing, if an unexpected token is encountered and it detects that an outer context can understand it and thus recover from it, it invokes the re-lexing logic in the lexer 2. This logic first checks if the lexer is in a parenthesized context and returns if it's not. Thus, the logic is a no-op if the lexer isn't in a parenthesized context 3. It then reduces the nesting level by 1. It shouldn't reset it to 0 because otherwise the recovery from nested list parsing will be incorrect 4. Then, it tries to find last newline character going backwards from the current position of the lexer. This avoids any whitespaces but if it encounters any character other than newline or whitespace, it aborts. 5. Now, if there's a newline character, then it needs to be re-lexed in a logical context which means that the lexer needs to emit it as a `Newline` token instead of `NonLogicalNewline`. 6. If the re-lexing gives a different token than the current one, the token source needs to update it's token collection to remove all the tokens which comes after the new current position. It turns out that the list parsing isn't that happy with the results so it requires some re-arranging such that the following two errors are raised correctly: 1. Expected comma 2. Recovery context error For (1), the following scenarios needs to be considered: * Missing comma between two elements * Half parsed element because the grammar doesn't allow it (for example, named expressions) For (2), the following scenarios needs to be considered: 1. If the parser is at a comma which means that there's a missing element otherwise the comma would've been consumed by the first `eat` call above. And, the parser doesn't take the re-lexing route on a comma token. 2. If it's the first element and the current token is not a comma which means that it's an invalid element. resolves: #11640 ## Test Plan - [x] Update existing test snapshots and validate them - [x] Add additional test cases specific to the re-lexing logic and validate the snapshots - [x] Run the fuzzer on 3000+ valid inputs - [x] Run the fuzzer on invalid inputs - [x] Run the parser on various open source projects - [x] Make sure the ecosystem changes are none
This commit is contained in:
Dhruv Manilawala
GitHub
parent
1f654ee729
commit
8499abfa7f
43 changed files with 1593 additions and 212 deletions
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@ -11,7 +11,7 @@ Module(
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body: [
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ClassDef(
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StmtClassDef {
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range: 0..40,
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range: 0..33,
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decorator_list: [],
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name: Identifier {
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id: "Foo",
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@ -73,29 +73,29 @@ Module(
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range: 29..33,
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},
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),
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Assign(
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StmtAssign {
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range: 34..40,
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targets: [
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Name(
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ExprName {
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range: 34..35,
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id: "x",
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ctx: Store,
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},
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),
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],
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value: NumberLiteral(
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ExprNumberLiteral {
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range: 38..40,
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value: Int(
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10,
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),
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},
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),
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],
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},
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),
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Assign(
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StmtAssign {
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range: 34..40,
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targets: [
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Name(
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ExprName {
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range: 34..35,
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id: "x",
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ctx: Store,
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},
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),
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],
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value: NumberLiteral(
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ExprNumberLiteral {
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range: 38..40,
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value: Int(
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10,
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),
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},
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),
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},
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),
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],
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@ -108,19 +108,5 @@ Module(
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1 | class Foo[T1, *T2(a, b):
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| ^ Syntax Error: Expected ']', found '('
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2 | pass
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3 | x = 10
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1 | class Foo[T1, *T2(a, b):
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2 | pass
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3 | x = 10
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| ^ Syntax Error: Simple statements must be separated by newlines or semicolons
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2 | pass
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3 | x = 10
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@ -0,0 +1,70 @@
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---
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source: crates/ruff_python_parser/tests/fixtures.rs
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input_file: crates/ruff_python_parser/resources/inline/err/comma_separated_missing_comma.py
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---
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## AST
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```
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Module(
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ModModule {
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range: 0..15,
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body: [
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Expr(
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StmtExpr {
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range: 0..14,
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value: Call(
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ExprCall {
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range: 0..14,
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func: Name(
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ExprName {
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range: 0..4,
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id: "call",
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ctx: Load,
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},
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),
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arguments: Arguments {
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range: 4..14,
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args: [
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NumberLiteral(
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ExprNumberLiteral {
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range: 12..13,
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value: Int(
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1,
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),
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},
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),
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],
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keywords: [
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Keyword {
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range: 5..8,
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arg: None,
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value: Name(
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ExprName {
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range: 7..8,
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id: "x",
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ctx: Load,
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},
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),
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},
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],
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},
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},
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),
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},
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),
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],
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},
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)
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```
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## Errors
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1 | call(**x := 1)
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1 | call(**x := 1)
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@ -0,0 +1,59 @@
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---
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source: crates/ruff_python_parser/tests/fixtures.rs
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input_file: crates/ruff_python_parser/resources/inline/err/comma_separated_missing_comma_between_elements.py
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---
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## AST
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```
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Module(
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ModModule {
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range: 0..92,
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body: [
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Expr(
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StmtExpr {
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range: 83..91,
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value: List(
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ExprList {
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range: 83..91,
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elts: [
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NumberLiteral(
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ExprNumberLiteral {
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range: 84..85,
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value: Int(
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0,
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),
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},
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),
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NumberLiteral(
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ExprNumberLiteral {
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range: 87..88,
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value: Int(
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1,
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),
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},
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),
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NumberLiteral(
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ExprNumberLiteral {
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range: 89..90,
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value: Int(
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2,
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),
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},
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),
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],
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ctx: Load,
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},
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),
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},
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),
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],
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},
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)
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```
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## Errors
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1 | # The comma between the first two elements is expected in `parse_list_expression`.
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2 | [0, 1 2]
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| ^ Syntax Error: Expected ',', found int
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@ -0,0 +1,58 @@
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---
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source: crates/ruff_python_parser/tests/fixtures.rs
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input_file: crates/ruff_python_parser/resources/inline/err/comma_separated_missing_element_between_commas.py
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---
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## AST
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```
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Module(
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ModModule {
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range: 0..12,
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body: [
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Expr(
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StmtExpr {
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range: 0..11,
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value: List(
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ExprList {
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range: 0..11,
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elts: [
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NumberLiteral(
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ExprNumberLiteral {
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range: 1..2,
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value: Int(
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0,
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),
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},
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),
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NumberLiteral(
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ExprNumberLiteral {
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range: 4..5,
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value: Int(
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1,
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),
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},
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),
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NumberLiteral(
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ExprNumberLiteral {
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range: 9..10,
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value: Int(
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2,
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),
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},
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),
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],
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ctx: Load,
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},
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),
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},
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),
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],
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},
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)
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```
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## Errors
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1 | [0, 1, , 2]
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| ^ Syntax Error: Expected an expression or a ']'
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@ -0,0 +1,52 @@
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---
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source: crates/ruff_python_parser/tests/fixtures.rs
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input_file: crates/ruff_python_parser/resources/inline/err/comma_separated_missing_first_element.py
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---
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## AST
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```
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Module(
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ModModule {
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range: 0..10,
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body: [
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Expr(
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StmtExpr {
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range: 0..9,
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value: Call(
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ExprCall {
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range: 0..9,
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func: Name(
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ExprName {
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range: 0..4,
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id: "call",
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ctx: Load,
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},
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),
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arguments: Arguments {
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range: 4..9,
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args: [
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NumberLiteral(
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ExprNumberLiteral {
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range: 7..8,
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value: Int(
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1,
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),
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},
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),
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],
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keywords: [],
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},
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},
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),
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},
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],
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},
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)
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```
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## Errors
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1 | call(= 1)
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1 | import a..b
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2 | import a...b
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1 | call(
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2 |
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3 | def foo():
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4 | pass
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3 | def foo():
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4 | pass
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| Syntax Error: unexpected EOF while parsing
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1 | call(x
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| ^ Syntax Error: Expected ')', found newline
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2 |
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3 | def foo():
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| ^^^ Syntax Error: Expected ',', found 'def'
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4 | pass
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3 | def foo():
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4 | pass
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| Syntax Error: unexpected EOF while parsing
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1 | call(x,
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| ^ Syntax Error: Expected ')', found newline
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2 |
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3 | def foo():
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| ^^^ Syntax Error: Expected an expression or a ')'
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4 | pass
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3 | def foo():
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4 | pass
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| Syntax Error: unexpected EOF while parsing
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1 | {x: 1,
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2 |
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3 | def foo():
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4 | pass
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3 | def foo():
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4 | pass
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## Errors
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2 | # token starts a statement.
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3 |
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4 | [1, 2
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| ^ Syntax Error: Expected ']', found newline
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5 |
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6 | def foo():
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7 | pass
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6 | def foo():
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7 | pass
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1 | (*x for x in y)
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2 | (x := 1, for x in y)
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## Errors
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2 | # token starts a statement.
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3 |
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4 | (1, 2
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5 |
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6 | def foo():
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7 | pass
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6 | def foo():
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7 | pass
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## Errors
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2 | # token starts a statement.
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3 |
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4 | {1, 2
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5 |
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6 | def foo():
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7 | pass
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6 | def foo():
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7 | pass
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| Syntax Error: unexpected EOF while parsing
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1 | from x import (a, b
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| ^ Syntax Error: Expected ')', found newline
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2 | 1 + 1
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| ^ Syntax Error: Expected ',', found int
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3 | from x import (a, b,
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4 | 2 + 2
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1 | from x import (a, b
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2 | 1 + 1
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3 | from x import (a, b,
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4 | 2 + 2
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2 | 1 + 1
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3 | from x import (a, b,
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4 | 2 + 2
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| ^ Syntax Error: Expected an import name or a ')'
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3 | from x import (a, b,
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4 | 2 + 2
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1 | def foo(a: int, b:
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| ^ Syntax Error: Expected ')', found newline
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2 | def foo():
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3 | return 42
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4 | def foo(a: int, b: str
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| ^^^ Syntax Error: Compound statements are not allowed on the same line as simple statements
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5 | x = 10
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1 | def foo(a: int, b:
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2 | def foo():
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| ^^^ Syntax Error: Expected an indented block after function definition
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3 | return 42
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4 | def foo(a: int, b: str
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body: [
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FunctionDef(
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StmtFunctionDef {
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range: 0..46,
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range: 0..39,
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is_async: false,
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decorator_list: [],
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name: Identifier {
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),
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},
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),
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Assign(
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StmtAssign {
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range: 40..46,
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targets: [
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Name(
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ExprName {
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range: 40..41,
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id: "x",
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ctx: Store,
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},
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),
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],
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value: NumberLiteral(
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ExprNumberLiteral {
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range: 44..46,
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value: Int(
|
||||
10,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
Assign(
|
||||
StmtAssign {
|
||||
range: 40..46,
|
||||
targets: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 40..41,
|
||||
id: "x",
|
||||
ctx: Store,
|
||||
},
|
||||
),
|
||||
],
|
||||
value: NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 44..46,
|
||||
value: Int(
|
||||
10,
|
||||
),
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
|
|
@ -143,19 +143,5 @@ Module(
|
|||
1 | def foo[T1, *T2(a, b):
|
||||
| ^ Syntax Error: Expected ']', found '('
|
||||
2 | return a + b
|
||||
3 | x = 10
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
1 | def foo[T1, *T2(a, b):
|
||||
2 | return a + b
|
||||
3 | x = 10
|
||||
| ^ Syntax Error: Simple statements must be separated by newlines or semicolons
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
2 | return a + b
|
||||
3 | x = 10
|
||||
|
|
||||
|
|
|
|||
|
|
@ -47,5 +47,5 @@ Module(
|
|||
|
||||
|
|
||||
1 | global x + 1
|
||||
| ^ Syntax Error: Expected ',', found '+'
|
||||
| ^ Syntax Error: Simple statements must be separated by newlines or semicolons
|
||||
|
|
||||
|
|
|
|||
|
|
@ -69,7 +69,7 @@ Module(
|
|||
|
||||
|
|
||||
1 | import (a)
|
||||
| ^ Syntax Error: Expected an import name
|
||||
| ^ Syntax Error: Expected one or more symbol names after import
|
||||
2 | import (a, b)
|
||||
|
|
||||
|
||||
|
|
@ -77,5 +77,5 @@ Module(
|
|||
|
|
||||
1 | import (a)
|
||||
2 | import (a, b)
|
||||
| ^ Syntax Error: Expected an import name
|
||||
| ^ Syntax Error: Expected one or more symbol names after import
|
||||
|
|
||||
|
|
|
|||
|
|
@ -90,7 +90,7 @@ Module(
|
|||
|
||||
|
|
||||
1 | import *
|
||||
| ^ Syntax Error: Expected an import name
|
||||
| ^ Syntax Error: Expected one or more symbol names after import
|
||||
2 | import x, *, y
|
||||
|
|
||||
|
||||
|
|
@ -102,13 +102,6 @@ Module(
|
|||
|
|
||||
|
||||
|
||||
|
|
||||
1 | import *
|
||||
2 | import x, *, y
|
||||
| ^ Syntax Error: Expected an import name
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
1 | import *
|
||||
2 | import x, *, y
|
||||
|
|
|
|||
|
|
@ -47,5 +47,5 @@ Module(
|
|||
|
||||
|
|
||||
1 | nonlocal x + 1
|
||||
| ^ Syntax Error: Expected ',', found '+'
|
||||
| ^ Syntax Error: Simple statements must be separated by newlines or semicolons
|
||||
|
|
||||
|
|
|
|||
|
|
@ -150,7 +150,7 @@ Module(
|
|||
|
||||
|
|
||||
1 | def foo(a, **kwargs={'b': 1, 'c': 2}): ...
|
||||
| ^ Syntax Error: Expected a parameter or the end of the parameter list
|
||||
| ^ Syntax Error: Expected ')', found '{'
|
||||
|
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -108,7 +108,7 @@ Module(
|
|||
|
||||
|
|
||||
1 | def foo(a, *args=(1, 2)): ...
|
||||
| ^ Syntax Error: Expected a parameter or the end of the parameter list
|
||||
| ^ Syntax Error: Expected ')', found '('
|
||||
|
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,602 @@
|
|||
---
|
||||
source: crates/ruff_python_parser/tests/fixtures.rs
|
||||
input_file: crates/ruff_python_parser/resources/invalid/re_lex_logical_token.py
|
||||
---
|
||||
## AST
|
||||
|
||||
```
|
||||
Module(
|
||||
ModModule {
|
||||
range: 0..824,
|
||||
body: [
|
||||
If(
|
||||
StmtIf {
|
||||
range: 48..59,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 51..59,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 51..55,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 55..59,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 56..59,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 60..79,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 64..67,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 67..69,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 75..79,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
If(
|
||||
StmtIf {
|
||||
range: 113..152,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 116..124,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 116..120,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 120..124,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 121..124,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 129..152,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 133..136,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 136..138,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 148..152,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
If(
|
||||
StmtIf {
|
||||
range: 228..269,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 231..239,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 231..235,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 235..239,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 236..239,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 246..269,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 250..253,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 253..255,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 265..269,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
If(
|
||||
StmtIf {
|
||||
range: 344..392,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 347..355,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 347..351,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 351..355,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 352..355,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 369..392,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 373..376,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 376..378,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 388..392,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
If(
|
||||
StmtIf {
|
||||
range: 453..499,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 456..472,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 456..460,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 460..472,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 461..464,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
List(
|
||||
ExprList {
|
||||
range: 466..471,
|
||||
elts: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 467..468,
|
||||
id: "a",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
Name(
|
||||
ExprName {
|
||||
range: 470..471,
|
||||
id: "b",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 476..499,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 480..483,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 483..485,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 495..499,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
If(
|
||||
StmtIf {
|
||||
range: 564..611,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 567..583,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 567..571,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 571..583,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 572..575,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
List(
|
||||
ExprList {
|
||||
range: 577..582,
|
||||
elts: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 578..579,
|
||||
id: "a",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
Name(
|
||||
ExprName {
|
||||
range: 581..582,
|
||||
id: "b",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 588..611,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 592..595,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 595..597,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 607..611,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
If(
|
||||
StmtIf {
|
||||
range: 772..824,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 775..796,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 775..779,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 779..796,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 780..783,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
List(
|
||||
ExprList {
|
||||
range: 785..794,
|
||||
elts: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 786..787,
|
||||
id: "a",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
Name(
|
||||
ExprName {
|
||||
range: 793..794,
|
||||
id: "b",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 801..824,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 805..808,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 808..810,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 820..824,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
)
|
||||
```
|
||||
## Errors
|
||||
|
||||
|
|
||||
1 | # No indentation before the function definition
|
||||
2 | if call(foo
|
||||
| ^ Syntax Error: Expected ')', found newline
|
||||
3 | def bar():
|
||||
4 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
1 | # No indentation before the function definition
|
||||
2 | if call(foo
|
||||
3 | def bar():
|
||||
| ^^^ Syntax Error: Expected an indented block after `if` statement
|
||||
4 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
7 | # Indented function definition
|
||||
8 | if call(foo
|
||||
| ^ Syntax Error: Expected ')', found newline
|
||||
9 | def bar():
|
||||
10 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
13 | # There are multiple non-logical newlines (blank lines) in the `if` body
|
||||
14 | if call(foo
|
||||
| ^ Syntax Error: Expected ')', found newline
|
||||
15 |
|
||||
16 |
|
||||
17 | def bar():
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
21 | # There are trailing whitespaces in the blank line inside the `if` body
|
||||
22 | if call(foo
|
||||
| ^ Syntax Error: Expected ')', found newline
|
||||
23 |
|
||||
24 | def bar():
|
||||
25 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
28 | # The lexer is nested with multiple levels of parentheses
|
||||
29 | if call(foo, [a, b
|
||||
| ^ Syntax Error: Expected ']', found NonLogicalNewline
|
||||
30 | def bar():
|
||||
31 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
34 | # The outer parenthesis is closed but the inner bracket isn't
|
||||
35 | if call(foo, [a, b)
|
||||
| ^ Syntax Error: Expected ']', found ')'
|
||||
36 | def bar():
|
||||
37 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
34 | # The outer parenthesis is closed but the inner bracket isn't
|
||||
35 | if call(foo, [a, b)
|
||||
| ^ Syntax Error: Expected ':', found newline
|
||||
36 | def bar():
|
||||
37 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
41 | # test is to make sure it emits a `NonLogicalNewline` token after `b`.
|
||||
42 | if call(foo, [a,
|
||||
43 | b
|
||||
| ^ Syntax Error: Expected ']', found NonLogicalNewline
|
||||
44 | )
|
||||
45 | def bar():
|
||||
46 | pass
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
42 | if call(foo, [a,
|
||||
43 | b
|
||||
44 | )
|
||||
| ^ Syntax Error: Expected ':', found newline
|
||||
45 | def bar():
|
||||
46 | pass
|
||||
|
|
||||
|
|
@ -0,0 +1,104 @@
|
|||
---
|
||||
source: crates/ruff_python_parser/tests/fixtures.rs
|
||||
input_file: crates/ruff_python_parser/resources/invalid/re_lex_logical_token_mac_eol.py
|
||||
---
|
||||
## AST
|
||||
|
||||
```
|
||||
Module(
|
||||
ModModule {
|
||||
range: 0..46,
|
||||
body: [
|
||||
If(
|
||||
StmtIf {
|
||||
range: 0..46,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 3..19,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 3..7,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 7..19,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 8..11,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
List(
|
||||
ExprList {
|
||||
range: 13..18,
|
||||
elts: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 14..15,
|
||||
id: "a",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
Name(
|
||||
ExprName {
|
||||
range: 17..18,
|
||||
id: "b",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 23..46,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 27..30,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 30..32,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 42..46,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
)
|
||||
```
|
||||
## Errors
|
||||
|
||||
|
|
||||
1 | if call(foo, [a, b
def bar():
pass
|
||||
| Syntax Error: Expected ']', found NonLogicalNewline
|
||||
|
|
||||
|
|
@ -0,0 +1,107 @@
|
|||
---
|
||||
source: crates/ruff_python_parser/tests/fixtures.rs
|
||||
input_file: crates/ruff_python_parser/resources/invalid/re_lex_logical_token_windows_eol.py
|
||||
---
|
||||
## AST
|
||||
|
||||
```
|
||||
Module(
|
||||
ModModule {
|
||||
range: 0..50,
|
||||
body: [
|
||||
If(
|
||||
StmtIf {
|
||||
range: 0..48,
|
||||
test: Call(
|
||||
ExprCall {
|
||||
range: 3..20,
|
||||
func: Name(
|
||||
ExprName {
|
||||
range: 3..7,
|
||||
id: "call",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
arguments: Arguments {
|
||||
range: 7..20,
|
||||
args: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 8..11,
|
||||
id: "foo",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
List(
|
||||
ExprList {
|
||||
range: 13..18,
|
||||
elts: [
|
||||
Name(
|
||||
ExprName {
|
||||
range: 14..15,
|
||||
id: "a",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
Name(
|
||||
ExprName {
|
||||
range: 17..18,
|
||||
id: "b",
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
],
|
||||
keywords: [],
|
||||
},
|
||||
},
|
||||
),
|
||||
body: [
|
||||
FunctionDef(
|
||||
StmtFunctionDef {
|
||||
range: 24..48,
|
||||
is_async: false,
|
||||
decorator_list: [],
|
||||
name: Identifier {
|
||||
id: "bar",
|
||||
range: 28..31,
|
||||
},
|
||||
type_params: None,
|
||||
parameters: Parameters {
|
||||
range: 31..33,
|
||||
posonlyargs: [],
|
||||
args: [],
|
||||
vararg: None,
|
||||
kwonlyargs: [],
|
||||
kwarg: None,
|
||||
},
|
||||
returns: None,
|
||||
body: [
|
||||
Pass(
|
||||
StmtPass {
|
||||
range: 44..48,
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
),
|
||||
],
|
||||
elif_else_clauses: [],
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
)
|
||||
```
|
||||
## Errors
|
||||
|
||||
|
|
||||
1 | if call(foo, [a, b
|
||||
| ___________________^
|
||||
2 | | def bar():
|
||||
| |_^ Syntax Error: Expected ']', found NonLogicalNewline
|
||||
3 | pass
|
||||
|
|
||||
|
|
@ -335,7 +335,7 @@ Module(
|
|||
11 | def keyword[A, await](): ...
|
||||
12 |
|
||||
13 | def not_a_type_param[A, |, B](): ...
|
||||
| ^ Syntax Error: Expected a type parameter or the end of the type parameter list
|
||||
| ^ Syntax Error: Expected ',', found '|'
|
||||
14 |
|
||||
15 | def multiple_commas[A,,B](): ...
|
||||
|
|
||||
|
|
@ -383,7 +383,7 @@ Module(
|
|||
17 | def multiple_trailing_commas[A,,](): ...
|
||||
18 |
|
||||
19 | def multiple_commas_and_recovery[A,,100](): ...
|
||||
| ^^^ Syntax Error: Expected a type parameter or the end of the type parameter list
|
||||
| ^^^ Syntax Error: Expected ']', found int
|
||||
|
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -99,7 +99,7 @@ Module(
|
|||
2 | # Not in the mapping start token set, so the list parsing bails
|
||||
3 | # v
|
||||
4 | case {(x as y): 1}:
|
||||
| ^ Syntax Error: Expected a mapping pattern or the end of the mapping pattern
|
||||
| ^ Syntax Error: Expected '}', found '('
|
||||
5 | pass
|
||||
|
|
||||
|
||||
|
|
|
|||
|
|
@ -1372,7 +1372,7 @@ Module(
|
|||
|
|
||||
4 | with (item1, item2),: ...
|
||||
5 | with (item1, item2), as f: ...
|
||||
| ^^ Syntax Error: Expected an expression or the end of the with item list
|
||||
| ^^ Syntax Error: Expected ',', found 'as'
|
||||
6 | with (item1, item2), item3,: ...
|
||||
7 | with (*item): ...
|
||||
|
|
||||
|
|
@ -1450,7 +1450,7 @@ Module(
|
|||
10 | with (item1, item2 := 10 as f): ...
|
||||
11 | with (x for x in range(10), item): ...
|
||||
12 | with (item, x for x in range(10)): ...
|
||||
| ^^^ Syntax Error: Expected ',', found 'for'
|
||||
| ^^^ Syntax Error: Expected ')', found 'for'
|
||||
13 |
|
||||
14 | # Make sure the parser doesn't report the same error twice
|
||||
|
|
||||
|
|
@ -1518,7 +1518,7 @@ Module(
|
|||
|
|
||||
17 | with (*x for x in iter, item): ...
|
||||
18 | with (item1, *x for x in iter, item2): ...
|
||||
| ^^^ Syntax Error: Expected ',', found 'for'
|
||||
| ^^^ Syntax Error: Expected ')', found 'for'
|
||||
19 | with (x as f, *y): ...
|
||||
20 | with (*x, y as f): ...
|
||||
|
|
||||
|
|
|
|||
|
|
@ -330,11 +330,5 @@ Module(
|
|||
3 | with (item1, item2 item3, item4): ...
|
||||
4 | with (item1, item2 as f1 item3, item4): ...
|
||||
5 | with (item1, item2: ...
|
||||
| ^ Syntax Error: Expected ',', found ':'
|
||||
|
|
||||
|
||||
|
||||
|
|
||||
4 | with (item1, item2 as f1 item3, item4): ...
|
||||
5 | with (item1, item2: ...
|
||||
| ^ Syntax Error: Expected ')', found ':'
|
||||
|
|
||||
|
|
|
|||
|
|
@ -0,0 +1,168 @@
|
|||
---
|
||||
source: crates/ruff_python_parser/tests/fixtures.rs
|
||||
input_file: crates/ruff_python_parser/resources/inline/ok/comma_separated_regular_list_terminator.py
|
||||
---
|
||||
## AST
|
||||
|
||||
```
|
||||
Module(
|
||||
ModModule {
|
||||
range: 0..181,
|
||||
body: [
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 141..144,
|
||||
value: List(
|
||||
ExprList {
|
||||
range: 141..144,
|
||||
elts: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 142..143,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 145..151,
|
||||
value: List(
|
||||
ExprList {
|
||||
range: 145..151,
|
||||
elts: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 146..147,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 149..150,
|
||||
value: Int(
|
||||
1,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 152..159,
|
||||
value: List(
|
||||
ExprList {
|
||||
range: 152..159,
|
||||
elts: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 153..154,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 156..157,
|
||||
value: Int(
|
||||
1,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 160..169,
|
||||
value: List(
|
||||
ExprList {
|
||||
range: 160..169,
|
||||
elts: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 161..162,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 164..165,
|
||||
value: Int(
|
||||
1,
|
||||
),
|
||||
},
|
||||
),
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 167..168,
|
||||
value: Int(
|
||||
2,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
Expr(
|
||||
StmtExpr {
|
||||
range: 170..180,
|
||||
value: List(
|
||||
ExprList {
|
||||
range: 170..180,
|
||||
elts: [
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 171..172,
|
||||
value: Int(
|
||||
0,
|
||||
),
|
||||
},
|
||||
),
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 174..175,
|
||||
value: Int(
|
||||
1,
|
||||
),
|
||||
},
|
||||
),
|
||||
NumberLiteral(
|
||||
ExprNumberLiteral {
|
||||
range: 177..178,
|
||||
value: Int(
|
||||
2,
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
ctx: Load,
|
||||
},
|
||||
),
|
||||
},
|
||||
),
|
||||
],
|
||||
},
|
||||
)
|
||||
```
|
||||
Loading…
Add table
Add a link
Reference in a new issue