mirror of
https://github.com/astral-sh/ruff.git
synced 2025-11-03 21:24:29 +00:00
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.
368 lines
16 KiB
Text
368 lines
16 KiB
Text
---
|
|
source: crates/ruff_python_parser/tests/fixtures.rs
|
|
input_file: crates/ruff_python_parser/resources/valid/expressions/named.py
|
|
---
|
|
## AST
|
|
|
|
```
|
|
Module(
|
|
ModModule {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 0..157,
|
|
body: [
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 0..11,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 1..10,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 1..5,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 9..10,
|
|
value: Int(
|
|
0,
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 12..29,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 13..28,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 13..17,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: BinOp(
|
|
ExprBinOp {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 22..27,
|
|
left: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 22..23,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
op: Mult,
|
|
right: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 26..27,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 30..45,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 31..44,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 31..35,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: BinOp(
|
|
ExprBinOp {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 39..44,
|
|
left: NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 39..40,
|
|
value: Int(
|
|
1,
|
|
),
|
|
},
|
|
),
|
|
op: Add,
|
|
right: NumberLiteral(
|
|
ExprNumberLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 43..44,
|
|
value: Int(
|
|
1,
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 46..63,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 47..62,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 47..51,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: Tuple(
|
|
ExprTuple {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 55..62,
|
|
elts: [
|
|
Starred(
|
|
ExprStarred {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 56..58,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 57..58,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 60..61,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
],
|
|
ctx: Load,
|
|
parenthesized: true,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 64..90,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 65..89,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 65..69,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: If(
|
|
ExprIf {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 73..89,
|
|
test: BooleanLiteral(
|
|
ExprBooleanLiteral {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 78..82,
|
|
value: true,
|
|
},
|
|
),
|
|
body: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 73..74,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
orelse: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 88..89,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 91..112,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 92..111,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 92..96,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: Lambda(
|
|
ExprLambda {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 100..111,
|
|
parameters: Some(
|
|
Parameters {
|
|
range: 107..108,
|
|
node_index: AtomicNodeIndex(
|
|
0,
|
|
),
|
|
posonlyargs: [],
|
|
args: [
|
|
ParameterWithDefault {
|
|
range: 107..108,
|
|
node_index: AtomicNodeIndex(..),
|
|
parameter: Parameter {
|
|
range: 107..108,
|
|
node_index: AtomicNodeIndex(..),
|
|
name: Identifier {
|
|
id: Name("x"),
|
|
range: 107..108,
|
|
node_index: AtomicNodeIndex(..),
|
|
},
|
|
annotation: None,
|
|
},
|
|
default: None,
|
|
},
|
|
],
|
|
vararg: None,
|
|
kwonlyargs: [],
|
|
kwarg: None,
|
|
},
|
|
),
|
|
body: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 110..111,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 113..132,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 114..131,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 114..118,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: Yield(
|
|
ExprYield {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 123..130,
|
|
value: Some(
|
|
Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 129..130,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 133..157,
|
|
value: Named(
|
|
ExprNamed {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 134..156,
|
|
target: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 134..138,
|
|
id: Name("name"),
|
|
ctx: Store,
|
|
},
|
|
),
|
|
value: YieldFrom(
|
|
ExprYieldFrom {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 143..155,
|
|
value: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 154..155,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
],
|
|
},
|
|
)
|
|
```
|