Enable sub-language file coverage behind a ff

lib/codeql.js

@@ -297,6 +297,12 @@ async function getCodeQLForCmd(cmd, checkVersion) {
             if (await util.codeQlVersionAbove(this, exports.CODEQL_VERSION_LANGUAGE_BASELINE_CONFIG)) {
                 extraArgs.push("--calculate-language-specific-baseline");
             }
+            if (await features.getValue(feature_flags_1.Feature.SublanguageFileCoverageEnabled, this)) {
+                extraArgs.push("--sublanguage-file-coverage");
+            }
+            else if (await util.codeQlVersionAbove(this, feature_flags_1.CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE)) {
+                extraArgs.push("--no-sublanguage-file-coverage");
+            }
             await runTool(cmd, [
                 "database",
                 "init",

lib/feature-flags.js

@@ -23,7 +23,7 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", { value: true });
-exports.logCodeScanningConfigInCli = exports.useCodeScanningConfigInCli = exports.Features = exports.FEATURE_FLAGS_FILE_NAME = exports.featureConfig = exports.Feature = exports.CODEQL_VERSION_INTRA_LAYER_PARALLELISM = exports.CODEQL_VERSION_ANALYSIS_SUMMARY_V2 = exports.CODEQL_VERSION_BUNDLE_SEMANTICALLY_VERSIONED = void 0;
+exports.logCodeScanningConfigInCli = exports.useCodeScanningConfigInCli = exports.Features = exports.FEATURE_FLAGS_FILE_NAME = exports.featureConfig = exports.Feature = exports.CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE = exports.CODEQL_VERSION_INTRA_LAYER_PARALLELISM = exports.CODEQL_VERSION_ANALYSIS_SUMMARY_V2 = exports.CODEQL_VERSION_BUNDLE_SEMANTICALLY_VERSIONED = void 0;
 const fs = __importStar(require("fs"));
 const path = __importStar(require("path"));
 const semver = __importStar(require("semver"));
@@ -45,6 +45,10 @@ exports.CODEQL_VERSION_ANALYSIS_SUMMARY_V2 = "2.14.0";
  * limit to 2.14.6 onwards, since that's the version that has mitigations against OOM failures.
  */
 exports.CODEQL_VERSION_INTRA_LAYER_PARALLELISM = "2.14.6";
+/**
+ * Versions 2.15.0+ of the CodeQL CLI support sub-language file coverage information.
+ */
+exports.CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE = "2.15.0";
 /**
  * Feature enablement as returned by the GitHub API endpoint.
  *
@@ -62,6 +66,7 @@ var Feature;
     Feature["ExportDiagnosticsEnabled"] = "export_diagnostics_enabled";
     Feature["MlPoweredQueriesEnabled"] = "ml_powered_queries_enabled";
     Feature["QaTelemetryEnabled"] = "qa_telemetry_enabled";
+    Feature["SublanguageFileCoverageEnabled"] = "sublanguage_file_coverage_enabled";
     Feature["UploadFailedSarifEnabled"] = "upload_failed_sarif_enabled";
 })(Feature || (exports.Feature = Feature = {}));
 exports.featureConfig = {
@@ -110,6 +115,11 @@ exports.featureConfig = {
         minimumVersion: undefined,
         defaultValue: false,
     },
+    [Feature.SublanguageFileCoverageEnabled]: {
+        envVar: "CODEQL_ACTION_SUBLANGUAGE_FILE_COVERAGE",
+        minimumVersion: exports.CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE,
+        defaultValue: false,
+    },
     [Feature.UploadFailedSarifEnabled]: {
         envVar: "CODEQL_ACTION_UPLOAD_FAILED_SARIF",
         minimumVersion: "2.11.3",

src/codeql.ts

@@ -20,6 +20,7 @@ import {
   Feature,
   FeatureEnablement,
   useCodeScanningConfigInCli,
+  CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE,
 } from "./feature-flags";
 import { isTracedLanguage, Language } from "./languages";
 import { Logger } from "./logging";
@@ -611,6 +612,19 @@ export async function getCodeQLForCmd(
         extraArgs.push("--calculate-language-specific-baseline");
       }
 
+      if (
+        await features.getValue(Feature.SublanguageFileCoverageEnabled, this)
+      ) {
+        extraArgs.push("--sublanguage-file-coverage");
+      } else if (
+        await util.codeQlVersionAbove(
+          this,
+          CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE,
+        )
+      ) {
+        extraArgs.push("--no-sublanguage-file-coverage");
+      }
+
       await runTool(
         cmd,
         [

src/feature-flags.ts

@@ -29,6 +29,11 @@ export const CODEQL_VERSION_ANALYSIS_SUMMARY_V2 = "2.14.0";
  */
 export const CODEQL_VERSION_INTRA_LAYER_PARALLELISM = "2.14.6";
 
+/**
+ * Versions 2.15.0+ of the CodeQL CLI support sub-language file coverage information.
+ */
+export const CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE = "2.15.0";
+
 export interface CodeQLDefaultVersionInfo {
   cliVersion: string;
   tagName: string;
@@ -59,6 +64,7 @@ export enum Feature {
   ExportDiagnosticsEnabled = "export_diagnostics_enabled",
   MlPoweredQueriesEnabled = "ml_powered_queries_enabled",
   QaTelemetryEnabled = "qa_telemetry_enabled",
+  SublanguageFileCoverageEnabled = "sublanguage_file_coverage_enabled",
   UploadFailedSarifEnabled = "upload_failed_sarif_enabled",
 }
 
@@ -111,6 +117,11 @@ export const featureConfig: Record<
     minimumVersion: undefined,
     defaultValue: false,
   },
+  [Feature.SublanguageFileCoverageEnabled]: {
+    envVar: "CODEQL_ACTION_SUBLANGUAGE_FILE_COVERAGE",
+    minimumVersion: CODEQL_VERSION_SUBLANGUAGE_FILE_COVERAGE,
+    defaultValue: false,
+  },
   [Feature.UploadFailedSarifEnabled]: {
     envVar: "CODEQL_ACTION_UPLOAD_FAILED_SARIF",
     minimumVersion: "2.11.3",