Fix issue where trivia is incorrectly identified as an identifier following a dot.

Fixes #753

Author: DanielRosenwasser

src/services/services.ts

@@ -4550,17 +4550,16 @@ module ts {
             do {
                 token = scanner.scan();
 
-                if ((token === SyntaxKind.SlashToken || token === SyntaxKind.SlashEqualsToken) && !noRegexTable[lastNonTriviaToken]) {
-                    if (scanner.reScanSlashToken() === SyntaxKind.RegularExpressionLiteral) {
-                        token = SyntaxKind.RegularExpressionLiteral;
+                if (!isTrivia(token)) {
+                    if ((token === SyntaxKind.SlashToken || token === SyntaxKind.SlashEqualsToken) && !noRegexTable[lastNonTriviaToken]) {
+                        if (scanner.reScanSlashToken() === SyntaxKind.RegularExpressionLiteral) {
+                            token = SyntaxKind.RegularExpressionLiteral;
+                        }
+                    }
+                    else if (lastNonTriviaToken === SyntaxKind.DotToken) {
+                        token = SyntaxKind.Identifier;
                     }
-                }
-                else if (lastNonTriviaToken === SyntaxKind.DotToken) {
-                    token = SyntaxKind.Identifier;
-                }
 
-                // Only recall the token if it was *not* trivia.
-                if (!(SyntaxKind.FirstTriviaToken <= token && token <= SyntaxKind.LastTriviaToken)) {
                     lastNonTriviaToken = token;
                 }
 
@@ -4612,6 +4611,10 @@ module ts {
                     result.entries.push({ length: length, classification: classification });
                 }
             }
+
+            function isTrivia(token: SyntaxKind) {
+                return SyntaxKind.FirstTriviaToken <= token && token <= SyntaxKind.LastTriviaToken;
+            }
         }
 
         function isBinaryExpressionOperatorToken(token: SyntaxKind): boolean {

tests/cases/unittests/services/colorization.ts

@@ -189,6 +189,15 @@ describe('Colorization', function () {
                 identifier("var"));
         });
 
+        it("correctly classifies a keyword after a dot separated by comment trivia", function () {
+            test("a./*hello world*/ var",
+                ts.EndOfLineState.Start,
+                identifier("a"),
+                punctuation("."),
+                comment("/*hello world*/"),
+                identifier("var"));
+        });
+
         it("classifies a property access with whitespace around the dot", function () {
             test("   x  .\tfoo ()",
                 ts.EndOfLineState.Start,