Error reporting for spans.

pkg/analyzer/lib/src/generated/error.dart

Index: pkg/analyzer/lib/src/generated/error.dart
diff --git a/pkg/analyzer/lib/src/generated/error.dart b/pkg/analyzer/lib/src/generated/error.dart
index 6b4d93efa9fd29bb73c54fd50c96a0b787efdb32..19b4409889b9972c7fa153f5df5b833f17718c04 100644
--- a/pkg/analyzer/lib/src/generated/error.dart
+++ b/pkg/analyzer/lib/src/generated/error.dart
@@ -6,6 +6,8 @@ library engine.error;
 
 import 'dart:collection';
 
+import 'package:source_span/source_span.dart';
+
 import 'ast.dart' show AstNode;
 import 'element.dart';
 import 'java_core.dart';
@@ -2663,6 +2665,16 @@ class ErrorReporter {
   }
 
   /**
+   * Report an error with the given [errorCode] and [arguments]. The location of
+   * the error is specified by the given [span].
+   */
+  void reportErrorForSpan(ErrorCode errorCode, SourceSpan span,
+      [List<Object> arguments]) {
+    _errorListener.onError(new AnalysisError(
+        _source, span.start.offset, span.length, errorCode, arguments));

[scheglov, 2015/10/21 23:47:21]

I'd use reportErrorForOffset() as other reportErrorForX() do.

[pquitslund, 2015/10/21 23:56:57]

Done.

+  }
+
+  /**
    * Report an error with the given [errorCode] and [arguments]. The [token] is
    * used to compute the location of the error.
    */