Track newlines within triple quotes, fixes #61

config/src/main/java/com/typesafe/config/impl/Parser.java

@@ -200,12 +200,19 @@ final class Parser {
 
             while (Tokens.isNewline(t.token)) {
                 // line number tokens have the line that was _ended_ by the
-                // newline, so we have to add one.
+                // newline, so we have to add one. We have to update lineNumber
+                // here and also below, because not all tokens store a line
+                // number, but newline tokens always do.
                 lineNumber = t.token.lineNumber() + 1;
 
                 t = nextToken();
             }
 
+            // update line number again, iff we have one
+            int newNumber = t.token.lineNumber();
+            if (newNumber >= 0)
+                lineNumber = newNumber;
+
             return t;
         }
 

config/src/main/java/com/typesafe/config/impl/Tokenizer.java

@@ -435,6 +435,11 @@ final class Tokenizer {
                     consecutiveQuotes = 0;
                     if (c == -1)
                         throw problem("End of input but triple-quoted string was still open");
+                    else if (c == '\n') {
+                        // keep the line number accurate
+                        lineNumber += 1;
+                        lineOrigin = origin.setLineNumber(lineNumber);
+                    }
                 }
 
                 sb.appendCodePoint(c);

config/src/test/scala/com/typesafe/config/impl/ConfParserTest.scala

@@ -343,6 +343,17 @@ class ConfParserTest extends TestUtils {
         lineNumberTest(1, "1e\n")
         lineNumberTest(2, "\n1e\n")
         lineNumberTest(3, "\n\n1e\n")
+
+        // newlines in triple-quoted string should not hose up the numbering
+        lineNumberTest(1, "a : \"\"\"foo\"\"\"}")
+        lineNumberTest(2, "a : \"\"\"foo\n\"\"\"}")
+        lineNumberTest(3, "a : \"\"\"foo\nbar\nbaz\"\"\"}")
+        //   newlines after the triple quoted string
+        lineNumberTest(5, "a : \"\"\"foo\nbar\nbaz\"\"\"\n\n}")
+        //   triple quoted string ends in a newline
+        lineNumberTest(6, "a : \"\"\"foo\nbar\nbaz\n\"\"\"\n\n}")
+        //   end in the middle of triple-quoted string
+        lineNumberTest(5, "a : \"\"\"foo\n\n\nbar\n")
     }
 
     @Test