Rust: support paths and paths-ignore from the code scanning configuration file

This is done by simply adding the autobuilder from the shared
tree-sitter extractor library.

rust/ql/integration-tests/file-exclusions/Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "file_exclusion"
+version = "0.1.0"

rust/ql/integration-tests/file-exclusions/Cargo.toml

@@ -0,0 +1,7 @@
+[workspace]
+[package]
+name = "file_exclusion"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

rust/ql/integration-tests/file-exclusions/codeql-config.yml

@@ -0,0 +1,2 @@
+paths-ignore:
+  - '/src/maybe_ignore'

rust/ql/integration-tests/file-exclusions/source_archive.default.expected

@@ -0,0 +1,3 @@
+src/lib.rs
+src/maybe_ignore/a_source.rs
+src/maybe_ignore/mod.rs

rust/ql/integration-tests/file-exclusions/source_archive.with_config.expected

@@ -0,0 +1 @@
+src/lib.rs

rust/ql/integration-tests/file-exclusions/src/lib.rs

@@ -0,0 +1,16 @@
+mod maybe_ignore;
+
+pub fn add(left: u64, right: u64) -> u64 {
+    left + right
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn it_works() {
+        let result = add(2, 2);
+        assert_eq!(result, 4);
+    }
+}

rust/ql/integration-tests/file-exclusions/src/maybe_ignore/mod.rs

@@ -0,0 +1 @@
+mod a_source;

rust/ql/integration-tests/file-exclusions/test_file_exclusion.py

@@ -0,0 +1,12 @@
+import pathlib
+
+
+def test_default(codeql, rust, check_source_archive):
+    check_source_archive.expected_suffix = ".default.expected"
+    pathlib.Path("_git").rename(".git")
+    codeql.database.create()
+
+def test_with_config(codeql, rust, check_source_archive):
+    check_source_archive.expected_suffix = ".with_config.expected"
+    pathlib.Path("_git").rename(".git")
+    codeql.database.create(codescanning_config="codeql-config.yml")

rust/ql/integration-tests/file-exclusions/tests/integration.rs

@@ -0,0 +1,7 @@
+use file_exclusion::add;
+
+#[test]
+fn integration_works() {
+    let result = add(2, 2);
+    assert_eq!(result, 4);
+}