Merge pull request #2773 from github/redsun82/rust

Support rust analysis

lib/feature-flags.js

@@ -68,6 +68,7 @@ var Feature;
     Feature["ExtractToToolcache"] = "extract_to_toolcache";
     Feature["PythonDefaultIsToNotExtractStdlib"] = "python_default_is_to_not_extract_stdlib";
     Feature["QaTelemetryEnabled"] = "qa_telemetry_enabled";
+    Feature["RustAnalysis"] = "rust_analysis";
     Feature["ZstdBundleStreamingExtraction"] = "zstd_bundle_streaming_extraction";
 })(Feature || (exports.Feature = Feature = {}));
 exports.featureConfig = {
@@ -132,6 +133,11 @@ exports.featureConfig = {
         minimumVersion: undefined,
         toolsFeature: tools_features_1.ToolsFeature.PythonDefaultIsToNotExtractStdlib,
     },
+    [Feature.RustAnalysis]: {
+        defaultValue: false,
+        envVar: "CODEQL_ACTION_RUST_ANALYSIS",
+        minimumVersion: "2.19.3",
+    },
     [Feature.QaTelemetryEnabled]: {
         defaultValue: false,
         envVar: "CODEQL_ACTION_QA_TELEMETRY",

lib/init-action.js

@@ -37,6 +37,7 @@ const fs = __importStar(require("fs"));
 const path = __importStar(require("path"));
 const core = __importStar(require("@actions/core"));
 const io = __importStar(require("@actions/io"));
+const semver = __importStar(require("semver"));
 const uuid_1 = require("uuid");
 const actions_util_1 = require("./actions-util");
 const api_client_1 = require("./api-client");
@@ -345,6 +346,26 @@ async function run() {
             logger.info(`Setting C++ build-mode: none to ${value}`);
             core.exportVariable(bmnVar, value);
         }
+        // Set CODEQL_ENABLE_EXPERIMENTAL_FEATURES for rust
+        if (config.languages.includes(languages_1.Language.rust)) {
+            const feat = feature_flags_1.Feature.RustAnalysis;
+            const minVer = feature_flags_1.featureConfig[feat].minimumVersion;
+            const envVar = "CODEQL_ENABLE_EXPERIMENTAL_FEATURES";
+            // if in default setup, it means the feature flag was on when rust was enabled
+            // if the feature flag gets turned off, let's not have rust analysis throwing a configuration error
+            // in that case rust analysis will be disabled only when default setup is refreshed
+            if ((0, actions_util_1.isDefaultSetup)() || (await features.getValue(feat, codeql))) {
+                core.exportVariable(envVar, "true");
+            }
+            if (process.env[envVar] !== "true") {
+                throw new util_1.ConfigurationError(`Experimental and not officially supported Rust analysis requires setting ${envVar}=true in the environment`);
+            }
+            const actualVer = (await codeql.getVersion()).version;
+            if (semver.lt(actualVer, minVer)) {
+                throw new util_1.ConfigurationError(`Experimental rust analysis is supported by CodeQL CLI version ${minVer} or higher, but found version ${actualVer}`);
+            }
+            logger.info("Experimental rust analysis enabled");
+        }
         // Restore dependency cache(s), if they exist.
         if ((0, caching_utils_1.shouldRestoreCache)(config.dependencyCachingEnabled)) {
             await (0, dependency_caching_1.downloadDependencyCaches)(config.languages, logger);