Issue 1039: Nested comments

compiler/java/com/google/dart/compiler/parser/DartScanner.java

Index: compiler/java/com/google/dart/compiler/parser/DartScanner.java
diff --git a/compiler/java/com/google/dart/compiler/parser/DartScanner.java b/compiler/java/com/google/dart/compiler/parser/DartScanner.java
index 84a75a5fe62e210273335093b98de624c8ae7c06..38024deabc4ab7c02a9422c2edc2330bd6c94d07 100644
--- a/compiler/java/com/google/dart/compiler/parser/DartScanner.java
+++ b/compiler/java/com/google/dart/compiler/parser/DartScanner.java
@@ -1382,15 +1382,22 @@ public class DartScanner {
     int start = currPos.pos - 1;
     int line = currPos.line;
     int col = currPos.col;
+    int commentDepth = 1;
     advance();
     while (!isEos()) {
       int first = lookahead(0);
       advance();
       if (first == '*' && is('/')) {
-        Token result = select(Token.COMMENT);
-        int stop = internalState.lookaheadPos[0].pos;
-        commentLocation(start, stop, line, internalState.lookaheadPos[0].line, col);
-        return result;
+        if(--commentDepth == 0) {
+          Token result = select(Token.COMMENT);
+          int stop = internalState.lookaheadPos[0].pos;
+          commentLocation(start, stop, line, internalState.lookaheadPos[0].line, col);
+          return result;
+        }
+        advance();
+      } else if (first == '/' && is('*')) {
+        commentDepth++;
+        advance();
       }
     }
     int stop = internalState.lookaheadPos[0].pos;