Rust: add Locatable::fromSource

Author: aibaars

rust/ql/integration-tests/hello-project/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/hello-workspace/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/options/cfg/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/options/features/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/options/target/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/qltest/dependencies/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/qltest/failing_cargo_check/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/qltest/lib/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/integration-tests/qltest/main/functions.ql

@@ -1,5 +1,5 @@
 import rust
 
 from Function f
-where exists(f.getLocation().getFile().getRelativePath())
+where f.fromSource()
 select f

rust/ql/lib/codeql/rust/elements/internal/LocatableImpl.qll

@@ -41,6 +41,9 @@ module Impl {
      * Gets the primary file where this element occurs.
      */
     File getFile() { result = this.getLocation().getFile() }
+
+    /** Holds if this element is from source code. */
+    predicate fromSource() { exists(this.getFile().getRelativePath()) }
   }
 
   /** Gets the non-synthesized location of `l`, if any. */