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Rust: Add type inference tests for index expressions
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3 files changed

+119
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lines changed

‎rust/ql/test/library-tests/type-inference/main.rs‎

Lines changed: 53 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1734,6 +1734,58 @@ mod impl_trait {
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}
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}
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mod indexers {
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use std::ops::Index;
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#[derive(Debug)]
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struct S;
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impl S {
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fn foo(&self) -> Self {
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S
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}
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}
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#[derive(Debug)]
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struct MyVec<T> {
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data: Vec<T>,
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}
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impl<T> MyVec<T> {
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fn new() -> Self {
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MyVec { data: Vec::new() }
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}
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fn push(&mut self, value: T) {
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self.data.push(value); // $ fieldof=MyVec
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}
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}
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impl<T> Index<usize> for MyVec<T> {
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type Output = T;
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// MyVec::index
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fn index(&self, index: usize) -> &Self::Output {
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&self.data[index] // $ fieldof=MyVec
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}
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}
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fn analyze_slice(slice: &[S]) {
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let x = slice[0].foo(); // $ MISSING: method=foo MISSING: type=x:S
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}
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pub fn f() {
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let mut vec = MyVec::new(); // $ type=vec:T.S
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vec.push(S); // $ method=push
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vec[0].foo(); // $ MISSING: method=foo
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let xs: [S; 1] = [S];
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let x = xs[0].foo(); // $ MISSING: method=foo MISSING: type=x:S
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analyze_slice(&xs);
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}
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}
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fn main() {
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field_access::f();
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method_impl::f();
@@ -1755,4 +1807,5 @@ fn main() {
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operators::f();
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async_::f();
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impl_trait::f();
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indexers::f();
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}

‎rust/ql/test/library-tests/type-inference/type-inference.expected‎

Lines changed: 62 additions & 5 deletions
Original file line numberDiff line numberDiff line change
@@ -2462,9 +2462,66 @@ inferType
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| main.rs:1733:13:1733:13 | d | | main.rs:1681:5:1681:14 | S2 |
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| main.rs:1733:17:1733:34 | uses_my_trait2(...) | | main.rs:1681:5:1681:14 | S2 |
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| main.rs:1733:32:1733:33 | S1 | | main.rs:1680:5:1680:14 | S1 |
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| main.rs:1739:5:1739:20 | ...::f(...) | | main.rs:67:5:67:21 | Foo |
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| main.rs:1740:5:1740:60 | ...::g(...) | | main.rs:67:5:67:21 | Foo |
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| main.rs:1740:20:1740:38 | ...::Foo {...} | | main.rs:67:5:67:21 | Foo |
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| main.rs:1740:41:1740:59 | ...::Foo {...} | | main.rs:67:5:67:21 | Foo |
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| main.rs:1756:5:1756:15 | ...::f(...) | | {EXTERNAL LOCATION} | trait Future |
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| main.rs:1744:16:1744:20 | SelfParam | | file://:0:0:0:0 | & |
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| main.rs:1744:16:1744:20 | SelfParam | &T | main.rs:1740:5:1741:13 | S |
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| main.rs:1744:31:1746:9 | { ... } | | main.rs:1740:5:1741:13 | S |
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| main.rs:1745:13:1745:13 | S | | main.rs:1740:5:1741:13 | S |
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| main.rs:1755:26:1757:9 | { ... } | | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1755:26:1757:9 | { ... } | T | main.rs:1754:10:1754:10 | T |
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| main.rs:1756:13:1756:38 | MyVec {...} | | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1756:13:1756:38 | MyVec {...} | T | main.rs:1754:10:1754:10 | T |
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| main.rs:1756:27:1756:36 | ...::new(...) | | {EXTERNAL LOCATION} | Vec |
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| main.rs:1756:27:1756:36 | ...::new(...) | T | main.rs:1754:10:1754:10 | T |
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| main.rs:1759:17:1759:25 | SelfParam | | file://:0:0:0:0 | & |
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| main.rs:1759:17:1759:25 | SelfParam | &T | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1759:17:1759:25 | SelfParam | &T.T | main.rs:1754:10:1754:10 | T |
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| main.rs:1759:28:1759:32 | value | | main.rs:1754:10:1754:10 | T |
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| main.rs:1760:13:1760:16 | self | | file://:0:0:0:0 | & |
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| main.rs:1760:13:1760:16 | self | &T | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1760:13:1760:16 | self | &T.T | main.rs:1754:10:1754:10 | T |
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| main.rs:1760:13:1760:21 | self.data | | {EXTERNAL LOCATION} | Vec |
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| main.rs:1760:13:1760:21 | self.data | T | main.rs:1754:10:1754:10 | T |
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| main.rs:1760:28:1760:32 | value | | main.rs:1754:10:1754:10 | T |
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| main.rs:1768:18:1768:22 | SelfParam | | file://:0:0:0:0 | & |
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| main.rs:1768:18:1768:22 | SelfParam | &T | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1768:18:1768:22 | SelfParam | &T.T | main.rs:1764:10:1764:10 | T |
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| main.rs:1768:25:1768:29 | index | | {EXTERNAL LOCATION} | usize |
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| main.rs:1768:56:1770:9 | { ... } | | file://:0:0:0:0 | & |
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| main.rs:1768:56:1770:9 | { ... } | &T | main.rs:1764:10:1764:10 | T |
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| main.rs:1769:13:1769:29 | &... | | file://:0:0:0:0 | & |
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| main.rs:1769:13:1769:29 | &... | &T | main.rs:1764:10:1764:10 | T |
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| main.rs:1769:14:1769:17 | self | | file://:0:0:0:0 | & |
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| main.rs:1769:14:1769:17 | self | &T | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1769:14:1769:17 | self | &T.T | main.rs:1764:10:1764:10 | T |
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| main.rs:1769:14:1769:22 | self.data | | {EXTERNAL LOCATION} | Vec |
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| main.rs:1769:14:1769:22 | self.data | T | main.rs:1764:10:1764:10 | T |
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| main.rs:1769:24:1769:28 | index | | {EXTERNAL LOCATION} | usize |
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| main.rs:1773:22:1773:26 | slice | | file://:0:0:0:0 | & |
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| main.rs:1774:17:1774:21 | slice | | file://:0:0:0:0 | & |
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| main.rs:1774:23:1774:23 | 0 | | {EXTERNAL LOCATION} | i32 |
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| main.rs:1778:13:1778:19 | mut vec | | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1778:13:1778:19 | mut vec | T | main.rs:1740:5:1741:13 | S |
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| main.rs:1778:23:1778:34 | ...::new(...) | | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1778:23:1778:34 | ...::new(...) | T | main.rs:1740:5:1741:13 | S |
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| main.rs:1779:9:1779:11 | vec | | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1779:9:1779:11 | vec | T | main.rs:1740:5:1741:13 | S |
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| main.rs:1779:18:1779:18 | S | | main.rs:1740:5:1741:13 | S |
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| main.rs:1780:9:1780:11 | vec | | main.rs:1749:5:1752:5 | MyVec |
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| main.rs:1780:9:1780:11 | vec | T | main.rs:1740:5:1741:13 | S |
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| main.rs:1780:13:1780:13 | 0 | | {EXTERNAL LOCATION} | i32 |
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| main.rs:1782:13:1782:14 | xs | | file://:0:0:0:0 | [] |
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| main.rs:1782:21:1782:21 | 1 | | {EXTERNAL LOCATION} | i32 |
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| main.rs:1782:26:1782:28 | [...] | | file://:0:0:0:0 | [] |
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| main.rs:1782:27:1782:27 | S | | main.rs:1740:5:1741:13 | S |
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| main.rs:1783:17:1783:18 | xs | | file://:0:0:0:0 | [] |
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| main.rs:1783:20:1783:20 | 0 | | {EXTERNAL LOCATION} | i32 |
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| main.rs:1785:23:1785:25 | &xs | | file://:0:0:0:0 | & |
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| main.rs:1785:23:1785:25 | &xs | &T | file://:0:0:0:0 | [] |
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| main.rs:1785:24:1785:25 | xs | | file://:0:0:0:0 | [] |
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| main.rs:1791:5:1791:20 | ...::f(...) | | main.rs:67:5:67:21 | Foo |
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| main.rs:1792:5:1792:60 | ...::g(...) | | main.rs:67:5:67:21 | Foo |
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| main.rs:1792:20:1792:38 | ...::Foo {...} | | main.rs:67:5:67:21 | Foo |
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| main.rs:1792:41:1792:59 | ...::Foo {...} | | main.rs:67:5:67:21 | Foo |
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| main.rs:1808:5:1808:15 | ...::f(...) | | {EXTERNAL LOCATION} | trait Future |
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testFailures
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| main.rs:1760:13:1760:33 | ... .push(...) | Unexpected result: method=push |

‎rust/ql/test/library-tests/type-inference/type-inference.ql‎

Lines changed: 4 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -55,10 +55,13 @@ module TypeTest implements TestSig {
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exists(AstNode n, TypePath path, Type t |
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t = TypeInference::inferType(n, path) and
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location = n.getLocation() and
58-
element = n.toString() and
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if path.isEmpty()
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then value = element + ":" + t
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else value = element + ":" + path.toString() + "." + t.toString()
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|
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element = n.toString()
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or
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element = n.(IdentPat).getName().getText()
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)
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}
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}

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