Rust: Implement database quality telemetry query

csharp/ql/src/Telemetry/DatabaseQuality.qll

@@ -4,33 +4,7 @@
  */
 
 import csharp
-
-signature module StatsSig {
-  int getNumberOfOk();
-
-  int getNumberOfNotOk();
-
-  string getOkText();
-
-  string getNotOkText();
-}
-
-module ReportStats<StatsSig Stats> {
-  predicate numberOfOk(string key, int value) {
-    value = Stats::getNumberOfOk() and
-    key = "Number of " + Stats::getOkText()
-  }
-
-  predicate numberOfNotOk(string key, int value) {
-    value = Stats::getNumberOfNotOk() and
-    key = "Number of " + Stats::getNotOkText()
-  }
-
-  predicate percentageOfOk(string key, float value) {
-    value = Stats::getNumberOfOk() * 100.0 / (Stats::getNumberOfOk() + Stats::getNumberOfNotOk()) and
-    key = "Percentage of " + Stats::getOkText()
-  }
-}
+import codeql.util.ReportStats
 
 module CallTargetStats implements StatsSig {
   int getNumberOfOk() { result = count(Call c | exists(c.getTarget())) }

java/ql/src/Telemetry/DatabaseQuality.qll

@@ -4,33 +4,7 @@
  */
 
 import java
-
-signature module StatsSig {
-  int getNumberOfOk();
-
-  int getNumberOfNotOk();
-
-  string getOkText();
-
-  string getNotOkText();
-}
-
-module ReportStats<StatsSig Stats> {
-  predicate numberOfOk(string key, int value) {
-    value = Stats::getNumberOfOk() and
-    key = "Number of " + Stats::getOkText()
-  }
-
-  predicate numberOfNotOk(string key, int value) {
-    value = Stats::getNumberOfNotOk() and
-    key = "Number of " + Stats::getNotOkText()
-  }
-
-  predicate percentageOfOk(string key, float value) {
-    value = Stats::getNumberOfOk() * 100.0 / (Stats::getNumberOfOk() + Stats::getNumberOfNotOk()) and
-    key = "Percentage of " + Stats::getOkText()
-  }
-}
+import codeql.util.ReportStats
 
 module CallTargetStats implements StatsSig {
   int getNumberOfOk() { result = count(Call c | exists(c.getCallee())) }

rust/ql/src/queries/telemetry/DatabaseQuality.qll

@@ -0,0 +1,46 @@
+/**
+ * Provides database quality statistics that are reported by
+ * `rust/telemetry/extractor-information`
+ * and perhaps warned about by `rust/diagnostics/database-quality`.
+ */
+
+import rust
+import codeql.util.ReportStats
+
+module CallTargetStats implements StatsSig {
+  int getNumberOfOk() { result = count(CallExprBase c | exists(c.getStaticTarget())) }
+
+  private predicate isLambdaCall(CallExpr call) {
+    exists(Expr receiver | receiver = call.getFunction() |
+      // All calls to complex expressions and local variable accesses are lambda calls
+      receiver instanceof PathExpr implies receiver = any(Variable v).getAnAccess()
+    )
+  }
+
+  additional predicate isNotOkCall(CallExprBase c) {
+    not exists(c.getStaticTarget()) and
+    not isLambdaCall(c)
+  }
+
+  int getNumberOfNotOk() { result = count(CallExprBase c | isNotOkCall(c)) }
+
+  string getOkText() { result = "calls with call target" }
+
+  string getNotOkText() { result = "calls with missing call target" }
+}
+
+module MacroCallTargetStats implements StatsSig {
+  int getNumberOfOk() { result = count(MacroCall c | c.hasExpanded()) }
+
+  additional predicate isNotOkCall(MacroCall c) { not c.hasExpanded() }
+
+  int getNumberOfNotOk() { result = count(MacroCall c | isNotOkCall(c)) }
+
+  string getOkText() { result = "macro calls with call target" }
+
+  string getNotOkText() { result = "macro calls with missing call target" }
+}
+
+module CallTargetStatsReport = ReportStats<CallTargetStats>;
+
+module MacroCallTargetStatsReport = ReportStats<MacroCallTargetStats>;

rust/ql/src/queries/telemetry/DatabaseQualityDiagnostics.ql

@@ -0,0 +1,41 @@
+/**
+ * @name Low Rust analysis quality
+ * @description Low Rust analysis quality
+ * @kind diagnostic
+ * @id rust/diagnostic/database-quality
+ */
+
+import rust
+import DatabaseQuality
+import codeql.util.Unit
+
+class DbQualityDiagnostic extends Unit {
+  DbQualityDiagnostic() {
+    exists(float percentageGood |
+      CallTargetStatsReport::percentageOfOk(_, percentageGood)
+      or
+      MacroCallTargetStatsReport::percentageOfOk(_, percentageGood)
+    |
+      percentageGood < 95
+    )
+  }
+
+  string toString() {
+    result =
+      "Scanning Rust code completed successfully, but the scan encountered issues. " +
+        "This may be caused by problems identifying dependencies or use of generated source code, among other reasons -- "
+        +
+        "see other CodeQL diagnostics reported on the CodeQL status page for more details of possible causes. "
+        + "Addressing these warnings is advisable to avoid false-positive or missing results."
+  }
+}
+
+query predicate diagnosticAttributes(DbQualityDiagnostic e, string key, string value) {
+  exists(e) and // Quieten warning about unconstrained 'e'
+  key = ["visibilityCliSummaryTable", "visibilityTelemetry", "visibilityStatusPage"] and
+  value = "true"
+}
+
+from DbQualityDiagnostic d
+select d, d.toString(), 1
+/* Warning severity */

rust/ql/src/queries/telemetry/ExtractorInformation.ql

@@ -0,0 +1,65 @@
+/**
+ * @name Rust extraction information
+ * @description Information about the extraction for a Rust database
+ * @kind metric
+ * @tags summary telemetry
+ * @id rust/telemetry/extraction-information
+ */
+
+import rust
+import DatabaseQuality
+import codeql.rust.Diagnostics
+
+predicate fileCount(string key, int value) {
+  key = "Number of files" and
+  value = strictcount(File f)
+}
+
+predicate fileCountByExtension(string key, int value) {
+  exists(string extension |
+    key = "Number of files with extension " + extension and
+    value = strictcount(File f | f.getExtension() = extension)
+  )
+}
+
+predicate numberOfLinesOfCode(string key, int value) {
+  key = "Number of lines of code" and
+  value = strictsum(File f | any() | f.getNumberOfLinesOfCode())
+}
+
+predicate numberOfLinesOfCodeByExtension(string key, int value) {
+  exists(string extension |
+    key = "Number of lines of code with extension " + extension and
+    value = strictsum(File f | f.getExtension() = extension | f.getNumberOfLinesOfCode())
+  )
+}
+
+predicate extractorDiagnostics(string key, int value) {
+  exists(int severity |
+    key = "Number of diagnostics with severity " + severity.toString() and
+    value = strictcount(Diagnostic d | d.getSeverity() = severity)
+  )
+}
+
+from string key, float value
+where
+  (
+    fileCount(key, value) or
+    fileCountByExtension(key, value) or
+    numberOfLinesOfCode(key, value) or
+    numberOfLinesOfCodeByExtension(key, value) or
+    extractorDiagnostics(key, value) or
+    CallTargetStatsReport::numberOfOk(key, value) or
+    CallTargetStatsReport::numberOfNotOk(key, value) or
+    CallTargetStatsReport::percentageOfOk(key, value) or
+    MacroCallTargetStatsReport::numberOfOk(key, value) or
+    MacroCallTargetStatsReport::numberOfNotOk(key, value) or
+    MacroCallTargetStatsReport::percentageOfOk(key, value)
+  ) and
+  /* Infinity */
+  value != 1.0 / 0.0 and
+  /* -Infinity */
+  value != -1.0 / 0.0 and
+  /* NaN */
+  value != 0.0 / 0.0
+select key, value

shared/util/codeql/util/ReportStats.qll

@@ -0,0 +1,31 @@
+/**
+ * Provides the `ReportStats` module for reporting database quality statistics.
+ */
+module;
+
+signature module StatsSig {
+  int getNumberOfOk();
+
+  int getNumberOfNotOk();
+
+  string getOkText();
+
+  string getNotOkText();
+}
+
+module ReportStats<StatsSig Stats> {
+  predicate numberOfOk(string key, int value) {
+    value = Stats::getNumberOfOk() and
+    key = "Number of " + Stats::getOkText()
+  }
+
+  predicate numberOfNotOk(string key, int value) {
+    value = Stats::getNumberOfNotOk() and
+    key = "Number of " + Stats::getNotOkText()
+  }
+
+  predicate percentageOfOk(string key, float value) {
+    value = Stats::getNumberOfOk() * 100.0 / (Stats::getNumberOfOk() + Stats::getNumberOfNotOk()) and
+    key = "Percentage of " + Stats::getOkText()
+  }
+}