mirror of
https://github.com/astral-sh/ruff.git
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c9dff5c7d5
## Summary Garbage collect ASTs once we are done checking a given file. Queries with a cross-file dependency on the AST will reparse the file on demand. This reduces ty's peak memory usage by ~20-30%. The primary change of this PR is adding a `node_index` field to every AST node, that is assigned by the parser. `ParsedModule` can use this to create a flat index of AST nodes any time the file is parsed (or reparsed). This allows `AstNodeRef` to simply index into the current instance of the `ParsedModule`, instead of storing a pointer directly. The indices are somewhat hackily (using an atomic integer) assigned by the `parsed_module` query instead of by the parser directly. Assigning the indices in source-order in the (recursive) parser turns out to be difficult, and collecting the nodes during semantic indexing is impossible as `SemanticIndex` does not hold onto a specific `ParsedModuleRef`, which the pointers in the flat AST are tied to. This means that we have to do an extra AST traversal to assign and collect the nodes into a flat index, but the small performance impact (~3% on cold runs) seems worth it for the memory savings. Part of https://github.com/astral-sh/ty/issues/214.
893 lines
44 KiB
Text
893 lines
44 KiB
Text
---
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source: crates/ruff_python_parser/tests/fixtures.rs
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input_file: crates/ruff_python_parser/resources/valid/expressions/subscript.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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node_index: AtomicNodeIndex(..),
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range: 0..266,
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body: [
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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 0..10,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 0..10,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 0..7,
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 0..4,
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id: Name("data"),
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ctx: Load,
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},
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),
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slice: NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 5..6,
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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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ctx: Load,
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},
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),
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slice: NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 8..9,
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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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ctx: Load,
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},
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),
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},
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),
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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 11..21,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 11..21,
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 11..15,
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id: Name("data"),
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ctx: Load,
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},
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),
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slice: Tuple(
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ExprTuple {
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node_index: AtomicNodeIndex(..),
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range: 16..20,
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elts: [
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 16..17,
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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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node_index: AtomicNodeIndex(..),
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range: 19..20,
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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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ctx: Load,
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parenthesized: false,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 22..31,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 22..31,
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 22..26,
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id: Name("data"),
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ctx: Load,
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},
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),
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slice: Tuple(
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ExprTuple {
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node_index: AtomicNodeIndex(..),
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range: 27..30,
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elts: [
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Slice(
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ExprSlice {
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node_index: AtomicNodeIndex(..),
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range: 27..29,
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lower: Some(
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 27..28,
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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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),
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upper: None,
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step: None,
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},
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),
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],
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ctx: Load,
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parenthesized: false,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 32..43,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 32..43,
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 32..36,
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id: Name("data"),
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ctx: Load,
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},
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),
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slice: Tuple(
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ExprTuple {
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node_index: AtomicNodeIndex(..),
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range: 37..42,
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elts: [
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Slice(
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ExprSlice {
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node_index: AtomicNodeIndex(..),
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range: 37..39,
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lower: Some(
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 37..38,
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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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),
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upper: None,
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step: None,
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},
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),
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 41..42,
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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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ctx: Load,
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parenthesized: false,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 44..56,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 44..56,
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 44..48,
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id: Name("data"),
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ctx: Load,
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},
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),
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slice: Tuple(
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ExprTuple {
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node_index: AtomicNodeIndex(..),
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range: 49..55,
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elts: [
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Slice(
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ExprSlice {
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node_index: AtomicNodeIndex(..),
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range: 49..52,
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lower: Some(
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 49..50,
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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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),
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upper: Some(
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 51..52,
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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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step: None,
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},
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),
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 54..55,
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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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parenthesized: false,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 57..80,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 57..80,
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 57..61,
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id: Name("data"),
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ctx: Load,
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},
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),
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slice: Tuple(
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ExprTuple {
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node_index: AtomicNodeIndex(..),
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range: 62..79,
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elts: [
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Slice(
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ExprSlice {
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node_index: AtomicNodeIndex(..),
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range: 62..67,
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lower: Some(
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 62..63,
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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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),
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upper: Some(
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 64..65,
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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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step: Some(
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 66..67,
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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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},
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),
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 69..70,
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value: Int(
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3,
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),
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},
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),
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Slice(
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ExprSlice {
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node_index: AtomicNodeIndex(..),
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range: 72..79,
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lower: Some(
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Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 72..73,
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id: Name("a"),
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ctx: Load,
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},
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),
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),
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upper: Some(
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BinOp(
|
|
ExprBinOp {
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node_index: AtomicNodeIndex(..),
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range: 74..79,
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left: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 74..75,
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id: Name("b"),
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ctx: Load,
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},
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),
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op: Add,
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right: NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 78..79,
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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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),
|
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),
|
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step: None,
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},
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),
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],
|
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ctx: Load,
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parenthesized: false,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 81..93,
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value: Subscript(
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ExprSubscript {
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node_index: AtomicNodeIndex(..),
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range: 81..93,
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 81..85,
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id: Name("data"),
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ctx: Load,
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},
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),
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slice: Named(
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ExprNamed {
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node_index: AtomicNodeIndex(..),
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range: 86..92,
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target: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 86..87,
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id: Name("a"),
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ctx: Store,
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},
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),
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value: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 91..92,
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id: Name("b"),
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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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ctx: Load,
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},
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),
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},
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),
|
|
Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 94..106,
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value: Subscript(
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ExprSubscript {
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|
node_index: AtomicNodeIndex(..),
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range: 94..106,
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value: Name(
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ExprName {
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|
node_index: AtomicNodeIndex(..),
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range: 94..98,
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id: Name("data"),
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ctx: Load,
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},
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),
|
|
slice: Tuple(
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ExprTuple {
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node_index: AtomicNodeIndex(..),
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range: 99..105,
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elts: [
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Slice(
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ExprSlice {
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node_index: AtomicNodeIndex(..),
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range: 99..100,
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lower: None,
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upper: None,
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step: None,
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},
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),
|
|
Slice(
|
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ExprSlice {
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node_index: AtomicNodeIndex(..),
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range: 102..105,
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|
lower: None,
|
|
upper: Some(
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|
NumberLiteral(
|
|
ExprNumberLiteral {
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|
node_index: AtomicNodeIndex(..),
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range: 103..105,
|
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value: Int(
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11,
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),
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},
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|
),
|
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),
|
|
step: None,
|
|
},
|
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),
|
|
],
|
|
ctx: Load,
|
|
parenthesized: false,
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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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),
|
|
Expr(
|
|
StmtExpr {
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|
node_index: AtomicNodeIndex(..),
|
|
range: 107..120,
|
|
value: Subscript(
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|
ExprSubscript {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 107..120,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 107..111,
|
|
id: Name("data"),
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|
ctx: Load,
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},
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),
|
|
slice: Tuple(
|
|
ExprTuple {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 112..119,
|
|
elts: [
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NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 112..113,
|
|
value: Int(
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1,
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|
),
|
|
},
|
|
),
|
|
NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 115..116,
|
|
value: Int(
|
|
2,
|
|
),
|
|
},
|
|
),
|
|
NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 118..119,
|
|
value: Int(
|
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3,
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|
),
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|
},
|
|
),
|
|
],
|
|
ctx: Load,
|
|
parenthesized: false,
|
|
},
|
|
),
|
|
ctx: Load,
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|
},
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|
),
|
|
},
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|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 121..132,
|
|
value: Subscript(
|
|
ExprSubscript {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 121..132,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 121..125,
|
|
id: Name("data"),
|
|
ctx: Load,
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|
},
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|
),
|
|
slice: UnaryOp(
|
|
ExprUnaryOp {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 126..131,
|
|
op: Invert,
|
|
operand: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 127..131,
|
|
id: Name("flag"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 133..148,
|
|
value: Subscript(
|
|
ExprSubscript {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 133..148,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 133..137,
|
|
id: Name("data"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
slice: Slice(
|
|
ExprSlice {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 138..147,
|
|
lower: Some(
|
|
Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 139..145,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 139..140,
|
|
id: Name("a"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 144..145,
|
|
value: Int(
|
|
0,
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
),
|
|
upper: None,
|
|
step: None,
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 149..165,
|
|
value: Subscript(
|
|
ExprSubscript {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 149..165,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 149..153,
|
|
id: Name("data"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
slice: Slice(
|
|
ExprSlice {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 154..164,
|
|
lower: Some(
|
|
Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 155..161,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 155..156,
|
|
id: Name("a"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 160..161,
|
|
value: Int(
|
|
0,
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
),
|
|
upper: Some(
|
|
Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 163..164,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
),
|
|
step: None,
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 226..234,
|
|
value: Subscript(
|
|
ExprSubscript {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 226..234,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 226..230,
|
|
id: Name("data"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
slice: Tuple(
|
|
ExprTuple {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 231..233,
|
|
elts: [
|
|
Starred(
|
|
ExprStarred {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 231..233,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 232..233,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
],
|
|
ctx: Load,
|
|
parenthesized: false,
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 235..249,
|
|
value: Subscript(
|
|
ExprSubscript {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 235..249,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 235..239,
|
|
id: Name("data"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
slice: Tuple(
|
|
ExprTuple {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 240..248,
|
|
elts: [
|
|
Starred(
|
|
ExprStarred {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 240..248,
|
|
value: BoolOp(
|
|
ExprBoolOp {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 241..248,
|
|
op: And,
|
|
values: [
|
|
Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 241..242,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 247..248,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
],
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
],
|
|
ctx: Load,
|
|
parenthesized: false,
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 250..265,
|
|
value: Subscript(
|
|
ExprSubscript {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 250..265,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 250..254,
|
|
id: Name("data"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
slice: Tuple(
|
|
ExprTuple {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 255..264,
|
|
elts: [
|
|
Starred(
|
|
ExprStarred {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 255..264,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 257..263,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 257..258,
|
|
id: Name("x"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 262..263,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
],
|
|
ctx: Load,
|
|
parenthesized: false,
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
],
|
|
},
|
|
)
|
|
```
|