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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.
713 lines
32 KiB
Text
713 lines
32 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/if.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..423,
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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..16,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 0..16,
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test: BooleanLiteral(
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ExprBooleanLiteral {
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node_index: AtomicNodeIndex(..),
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range: 5..9,
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value: true,
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},
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),
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body: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 0..1,
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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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orelse: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 15..16,
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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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},
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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: 17..35,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 17..35,
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test: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 24..25,
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id: Name("x"),
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ctx: Load,
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},
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),
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body: Call(
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ExprCall {
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node_index: AtomicNodeIndex(..),
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range: 17..20,
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func: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 17..18,
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id: Name("f"),
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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: 18..20,
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node_index: AtomicNodeIndex(..),
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args: [],
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keywords: [],
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},
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},
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),
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orelse: NoneLiteral(
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ExprNoneLiteral {
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node_index: AtomicNodeIndex(..),
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range: 31..35,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 36..61,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 36..61,
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test: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 41..42,
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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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body: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 36..37,
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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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orelse: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 48..61,
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test: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 53..54,
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id: Name("d"),
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ctx: Load,
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},
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),
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body: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 48..49,
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id: Name("c"),
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ctx: Load,
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},
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),
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orelse: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 60..61,
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id: Name("e"),
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 62..84,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 62..84,
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test: Compare(
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ExprCompare {
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node_index: AtomicNodeIndex(..),
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range: 71..76,
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left: NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 71..72,
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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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ops: [
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Lt,
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],
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comparators: [
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NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 75..76,
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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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},
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),
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body: BinOp(
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ExprBinOp {
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node_index: AtomicNodeIndex(..),
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range: 62..67,
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left: 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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1,
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),
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},
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),
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op: Add,
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right: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 66..67,
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id: Name("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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orelse: UnaryOp(
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ExprUnaryOp {
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node_index: AtomicNodeIndex(..),
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range: 82..84,
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op: USub,
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operand: NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 83..84,
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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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),
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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: 85..108,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 85..108,
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test: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 96..97,
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id: Name("x"),
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ctx: Load,
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},
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),
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body: BoolOp(
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ExprBoolOp {
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node_index: AtomicNodeIndex(..),
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range: 85..92,
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op: And,
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values: [
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Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 85..86,
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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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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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),
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orelse: BooleanLiteral(
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ExprBooleanLiteral {
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node_index: AtomicNodeIndex(..),
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range: 103..108,
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value: false,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 109..127,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 109..127,
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test: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 119..120,
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id: Name("y"),
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ctx: Load,
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},
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),
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body: Compare(
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ExprCompare {
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node_index: AtomicNodeIndex(..),
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range: 109..115,
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left: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 109..110,
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id: Name("x"),
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ctx: Load,
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},
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),
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ops: [
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LtE,
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],
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comparators: [
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Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 114..115,
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id: Name("y"),
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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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orelse: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 126..127,
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id: Name("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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 128..154,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 128..154,
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test: BoolOp(
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ExprBoolOp {
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node_index: AtomicNodeIndex(..),
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range: 136..143,
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op: And,
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values: [
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Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 136..137,
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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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Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 142..143,
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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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),
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body: BooleanLiteral(
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ExprBooleanLiteral {
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node_index: AtomicNodeIndex(..),
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range: 128..132,
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value: true,
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},
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),
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orelse: BooleanLiteral(
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ExprBooleanLiteral {
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node_index: AtomicNodeIndex(..),
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range: 149..154,
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value: false,
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 155..171,
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value: Tuple(
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ExprTuple {
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node_index: AtomicNodeIndex(..),
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range: 155..171,
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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: 155..156,
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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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If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 158..171,
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test: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 163..164,
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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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body: NumberLiteral(
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ExprNumberLiteral {
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node_index: AtomicNodeIndex(..),
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range: 158..159,
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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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orelse: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 170..171,
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id: Name("c"),
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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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ctx: Load,
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parenthesized: false,
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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: 214..240,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 214..240,
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test: BooleanLiteral(
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ExprBooleanLiteral {
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node_index: AtomicNodeIndex(..),
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range: 219..223,
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value: true,
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},
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),
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body: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 214..215,
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id: Name("x"),
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ctx: Load,
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},
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),
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orelse: Lambda(
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ExprLambda {
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node_index: AtomicNodeIndex(..),
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range: 229..240,
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parameters: Some(
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Parameters {
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range: 236..237,
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node_index: AtomicNodeIndex(
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0,
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),
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posonlyargs: [],
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args: [
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ParameterWithDefault {
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range: 236..237,
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node_index: AtomicNodeIndex(..),
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parameter: Parameter {
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range: 236..237,
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node_index: AtomicNodeIndex(..),
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name: Identifier {
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id: Name("y"),
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range: 236..237,
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node_index: AtomicNodeIndex(..),
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},
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annotation: None,
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},
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default: None,
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},
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],
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vararg: None,
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kwonlyargs: [],
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kwarg: None,
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},
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),
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body: Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 239..240,
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id: Name("y"),
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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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Expr(
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StmtExpr {
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node_index: AtomicNodeIndex(..),
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range: 302..323,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 302..323,
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test: Yield(
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ExprYield {
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node_index: AtomicNodeIndex(..),
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range: 308..315,
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value: Some(
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Name(
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ExprName {
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node_index: AtomicNodeIndex(..),
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range: 314..315,
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id: Name("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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body: Name(
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|
ExprName {
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node_index: AtomicNodeIndex(..),
|
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range: 302..303,
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id: Name("x"),
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ctx: Load,
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},
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),
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orelse: Name(
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ExprName {
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|
node_index: AtomicNodeIndex(..),
|
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range: 322..323,
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id: Name("y"),
|
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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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),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
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range: 324..350,
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value: If(
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ExprIf {
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node_index: AtomicNodeIndex(..),
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range: 324..350,
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test: YieldFrom(
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ExprYieldFrom {
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node_index: AtomicNodeIndex(..),
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range: 330..342,
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value: Name(
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ExprName {
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|
node_index: AtomicNodeIndex(..),
|
|
range: 341..342,
|
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id: Name("x"),
|
|
ctx: Load,
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},
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|
),
|
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},
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),
|
|
body: Name(
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|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
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range: 324..325,
|
|
id: Name("x"),
|
|
ctx: Load,
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},
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),
|
|
orelse: Name(
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|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 349..350,
|
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id: Name("y"),
|
|
ctx: Load,
|
|
},
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),
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},
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),
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},
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),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
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range: 351..376,
|
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value: If(
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ExprIf {
|
|
node_index: AtomicNodeIndex(..),
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range: 351..376,
|
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test: Lambda(
|
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ExprLambda {
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|
node_index: AtomicNodeIndex(..),
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range: 357..368,
|
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parameters: Some(
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Parameters {
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range: 364..365,
|
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node_index: AtomicNodeIndex(
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0,
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),
|
|
posonlyargs: [],
|
|
args: [
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ParameterWithDefault {
|
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range: 364..365,
|
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node_index: AtomicNodeIndex(..),
|
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parameter: Parameter {
|
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range: 364..365,
|
|
node_index: AtomicNodeIndex(..),
|
|
name: Identifier {
|
|
id: Name("x"),
|
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range: 364..365,
|
|
node_index: AtomicNodeIndex(..),
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},
|
|
annotation: None,
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},
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default: None,
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},
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],
|
|
vararg: None,
|
|
kwonlyargs: [],
|
|
kwarg: None,
|
|
},
|
|
),
|
|
body: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 367..368,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
body: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 351..352,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
orelse: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 375..376,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
Expr(
|
|
StmtExpr {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 408..423,
|
|
value: If(
|
|
ExprIf {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 409..422,
|
|
test: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 414..415,
|
|
id: Name("y"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
body: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 409..410,
|
|
id: Name("x"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
orelse: Name(
|
|
ExprName {
|
|
node_index: AtomicNodeIndex(..),
|
|
range: 421..422,
|
|
id: Name("z"),
|
|
ctx: Load,
|
|
},
|
|
),
|
|
},
|
|
),
|
|
},
|
|
),
|
|
],
|
|
},
|
|
)
|
|
```
|