Skip to content

Rust: Extract SelfParams from crate graph #19369

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 2 commits into
base: main
Choose a base branch
from
Open
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
45 changes: 37 additions & 8 deletions rust/extractor/src/crate_graph.rs
Original file line number Diff line number Diff line change
Expand Up @@ -383,25 +383,54 @@ fn emit_function(
assert_eq!(sig.binders.len(Interner), parameters.len());
let sig = sig.skip_binders();
let ty_vars = &[parameters];
let function_data = db.function_data(function);
let mut self_param = None;
let params = sig
.params()
.iter()
.map(|p| {
.enumerate()
.filter_map(|(idx, p)| {
let type_repr = emit_hir_ty(trap, db, ty_vars, p);
trap.emit(generated::Param {
id: trap::TrapId::Star,
attrs: vec![],
type_repr,
pat: None,
})

if idx == 0 && function_data.has_self_param() {
Copy link
Preview

Copilot AI Apr 25, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Consider extracting the self parameter logic into a separate helper function to improve clarity and reduce complexity in the parameter iteration block.

Copilot uses AI. Check for mistakes.

// Check if the self parameter is a reference
let (is_ref, is_mut) = match p.kind(Interner) {
chalk_ir::TyKind::Ref(mutability, _, _) => {
(true, matches!(mutability, chalk_ir::Mutability::Mut))
}
chalk_ir::TyKind::Raw(mutability, _) => {
(false, matches!(mutability, chalk_ir::Mutability::Mut))
}
_ => (false, false),
};

self_param = Some(trap.emit(generated::SelfParam {
id: trap::TrapId::Star,
attrs: vec![],
type_repr,
is_ref,
is_mut,
lifetime: None,
name: None,
}));
None
} else {
Some(trap.emit(generated::Param {
id: trap::TrapId::Star,
attrs: vec![],
type_repr,
pat: None,
}))
}
})
.collect();

let ret_type = emit_hir_ty(trap, db, ty_vars, sig.ret());

let param_list = trap.emit(generated::ParamList {
id: trap::TrapId::Star,
params,
self_param: None,
self_param,
});
let ret_type = ret_type.map(|ret_type| {
trap.emit(generated::RetTypeRepr {
Expand Down
4 changes: 3 additions & 1 deletion rust/ql/lib/codeql/rust/frameworks/stdlib/Clone.qll
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,9 @@ final class CloneCallable extends SummarizedCallable::Range {
final override predicate propagatesFlow(
string input, string output, boolean preservesValue, string model
) {
input = "Argument[self]" and
// The `clone` method takes a `&self` parameter and dereferences it;
// make sure to not clone the reference itself
input = ["Argument[self].Reference", "Argument[self].WithoutReference"] and
output = "ReturnValue" and
preservesValue = true and
model = "generated"
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -8,18 +8,22 @@ models
| 7 | Summary: lang:core; crate::ptr::write; Argument[1]; Argument[0].Reference; value |
edges
| main.rs:12:9:12:9 | a [Some] | main.rs:13:10:13:19 | a.unwrap() | provenance | MaD:2 |
| main.rs:12:9:12:9 | a [Some] | main.rs:14:13:14:13 | a [Some] | provenance | |
| main.rs:12:9:12:9 | a [Some] | main.rs:14:13:14:21 | a.clone() [Some] | provenance | MaD:1 |
| main.rs:12:9:12:9 | a [Some] | main.rs:14:13:14:21 | a.clone() [Some] | provenance | generated |
| main.rs:12:13:12:28 | Some(...) [Some] | main.rs:12:9:12:9 | a [Some] | provenance | |
| main.rs:12:18:12:27 | source(...) | main.rs:12:13:12:28 | Some(...) [Some] | provenance | |
| main.rs:14:9:14:9 | b [Some] | main.rs:15:10:15:19 | b.unwrap() | provenance | MaD:2 |
| main.rs:14:13:14:13 | a [Some] | main.rs:14:13:14:21 | a.clone() [Some] | provenance | generated |
| main.rs:14:13:14:21 | a.clone() [Some] | main.rs:14:9:14:9 | b [Some] | provenance | |
| main.rs:19:9:19:9 | a [Ok] | main.rs:20:10:20:19 | a.unwrap() | provenance | MaD:5 |
| main.rs:19:9:19:9 | a [Ok] | main.rs:21:13:21:13 | a [Ok] | provenance | |
| main.rs:19:9:19:9 | a [Ok] | main.rs:21:13:21:21 | a.clone() [Ok] | provenance | MaD:4 |
| main.rs:19:9:19:9 | a [Ok] | main.rs:21:13:21:21 | a.clone() [Ok] | provenance | generated |
| main.rs:19:31:19:44 | Ok(...) [Ok] | main.rs:19:9:19:9 | a [Ok] | provenance | |
| main.rs:19:34:19:43 | source(...) | main.rs:19:31:19:44 | Ok(...) [Ok] | provenance | |
| main.rs:21:9:21:9 | b [Ok] | main.rs:22:10:22:19 | b.unwrap() | provenance | MaD:5 |
| main.rs:21:13:21:13 | a [Ok] | main.rs:21:13:21:21 | a.clone() [Ok] | provenance | generated |
| main.rs:21:13:21:21 | a.clone() [Ok] | main.rs:21:9:21:9 | b [Ok] | provenance | |
| main.rs:26:9:26:9 | a | main.rs:27:10:27:10 | a | provenance | |
| main.rs:26:9:26:9 | a | main.rs:28:13:28:21 | a.clone() | provenance | generated |
Expand Down Expand Up @@ -57,13 +61,15 @@ nodes
| main.rs:12:18:12:27 | source(...) | semmle.label | source(...) |
| main.rs:13:10:13:19 | a.unwrap() | semmle.label | a.unwrap() |
| main.rs:14:9:14:9 | b [Some] | semmle.label | b [Some] |
| main.rs:14:13:14:13 | a [Some] | semmle.label | a [Some] |
| main.rs:14:13:14:21 | a.clone() [Some] | semmle.label | a.clone() [Some] |
| main.rs:15:10:15:19 | b.unwrap() | semmle.label | b.unwrap() |
| main.rs:19:9:19:9 | a [Ok] | semmle.label | a [Ok] |
| main.rs:19:31:19:44 | Ok(...) [Ok] | semmle.label | Ok(...) [Ok] |
| main.rs:19:34:19:43 | source(...) | semmle.label | source(...) |
| main.rs:20:10:20:19 | a.unwrap() | semmle.label | a.unwrap() |
| main.rs:21:9:21:9 | b [Ok] | semmle.label | b [Ok] |
| main.rs:21:13:21:13 | a [Ok] | semmle.label | a [Ok] |
| main.rs:21:13:21:21 | a.clone() [Ok] | semmle.label | a.clone() [Ok] |
| main.rs:22:10:22:19 | b.unwrap() | semmle.label | b.unwrap() |
| main.rs:26:9:26:9 | a | semmle.label | a |
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,8 @@ import codeql.rust.internal.TypeInference as TypeInference
import TypeInference

query predicate inferType(AstNode n, TypePath path, Type t) {
t = TypeInference::inferType(n, path)
t = TypeInference::inferType(n, path) and
n.fromSource()
}

module ResolveTest implements TestSig {
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,13 @@
multipleMethodCallTargets
| sqlx.rs:65:30:65:52 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:65:30:65:52 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:65:30:65:52 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:65:30:65:52 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:65:30:65:52 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:65:30:65:52 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:76:29:76:51 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:76:29:76:51 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:76:29:76:51 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:76:29:76:51 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:76:29:76:51 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |
| sqlx.rs:76:29:76:51 | unsafe_query_2.as_str() | file://:0:0:0:0 | fn as_str |