Recover better from illegally named constructors (issue 28807)

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

Index: pkg/analyzer/lib/src/dart/error/syntactic_errors.dart
diff --git a/pkg/analyzer/lib/src/dart/error/syntactic_errors.dart b/pkg/analyzer/lib/src/dart/error/syntactic_errors.dart
index 70f1124b06a0a49d3849753031dccdcc9035adf5..c0ad9160d7dccae02bda507bcb05f39b9b4263d6 100644
--- a/pkg/analyzer/lib/src/dart/error/syntactic_errors.dart
+++ b/pkg/analyzer/lib/src/dart/error/syntactic_errors.dart
@@ -450,6 +450,11 @@ class ParserErrorCode extends ErrorCode {
       "Comment references should contain a possibly prefixed identifier and "
       "can start with 'new', but shouldn't contain anything else.");
 
+  static const ParserErrorCode INVALID_CONSTRUCTOR_NAME = const ParserErrorCode(
+      'INVALID_CONSTRUCTOR_NAME',
+      "The keyword word '{0}' cannot be used to name a constructor.",

[scheglov, 2017/02/18 17:37:40]

Do we need to repeat "word"?

[Brian Wilkerson, 2017/02/18 17:48:01]

Removed, thanks!

+      "Try giving the constructor a different name.");
+
   static const ParserErrorCode INVALID_HEX_ESCAPE = const ParserErrorCode(
       'INVALID_HEX_ESCAPE',
       "An escape sequence starting with '\\x' must be followed by 2 hexidecimal digits.");