Replace console logging to route through problem reporter

extensions/ql-vscode/src/log-insights/join-order.ts

@@ -76,15 +76,15 @@ function getMainHash(event: InLayer | ComputeRecursive): string {
 /**
  * Sum arrays a and b element-wise. The shorter array is padded with 0s if the arrays are not the same length.
  */
-function pointwiseSum(a: Int32Array, b: Int32Array): Int32Array {
+function pointwiseSum(a: Int32Array, b: Int32Array, problemReporter: EvaluationLogProblemReporter): Int32Array {
   function reportIfInconsistent(ai: number, bi: number) {
     if (ai === -1 && bi !== -1) {
-      console.warn(
+      problemReporter.log(
         `Operation was not evaluated in the first pipeline, but it was evaluated in the accumulated pipeline (with tuple count ${bi}).`
       );
     }
     if (ai !== -1 && bi === -1) {
-      console.warn(
+      problemReporter.log(
         `Operation was evaluated in the first pipeline (with tuple count ${ai}), but it was not evaluated in the accumulated pipeline.`
       );
     }
@@ -436,7 +436,8 @@ class JoinOrderScanner implements EvaluationLogScanner {
       // Pointwise sum the tuple counts
       const newTupleCounts = pointwiseSum(
         bucket.tupleCounts,
-        new Int32Array(run.counts)
+        new Int32Array(run.counts),
+        this.problemReporter
       );
       const newResultSizes = bucket.resultSize + resultSizes!;
       // Pointwise sum the deltas.

extensions/ql-vscode/src/log-insights/log-scanner-service.ts

@@ -5,6 +5,7 @@ import { QueryHistoryInfo } from '../query-results';
 import { EvaluationLogProblemReporter, EvaluationLogScannerSet } from './log-scanner';
 import { PipelineInfo, SummarySymbols } from './summary-parser';
 import * as fs from 'fs-extra';
+import { logger } from '../logging';
 
 /**
  * Compute the key used to find a predicate in the summary symbols.
@@ -39,6 +40,10 @@ class ProblemReporter implements EvaluationLogProblemReporter {
       this.diagnostics.push(new Diagnostic(range, message, DiagnosticSeverity.Error));
     }
   }
+
+  public log(message: string): void {
+    void logger.log(message);
+  }
 }
 
 export class LogScannerService extends DisposableObject {

extensions/ql-vscode/src/log-insights/log-scanner.ts

@@ -15,6 +15,12 @@ export interface EvaluationLogProblemReporter {
    * @param message The problem message.
    */
   reportProblem(predicateName: string, raHash: string, iteration: number, message: string): void;
+
+  /**
+   * Log a message about a problem in the implementation of the scanner. These will typically be
+   * displayed separate from any problems reported via `reportProblem()`.
+   */
+  log(message: string): void;
 }
 
 /**

extensions/ql-vscode/test/pure-tests/log-scanner.test.ts

@@ -22,6 +22,10 @@ class TestProblemReporter implements EvaluationLogProblemReporter {
       message
     });
   }
+
+  public log(message: string): void {
+    console.log(message);
+  }
 }
 
 describe('log scanners', function() {