Fix/multiline file boundary issue (#277)

Author: francoisvn

src/checkstyle/checks/whitespace/LineCheckBase.hx

@@ -16,6 +16,11 @@ class LineCheckBase extends Check {
 		multilineStringStart = false;
 	}
 
+	override public function run(checker:Checker):Array<CheckMessage> {
+		multilineStringStart = false;
+		return super.run(checker);
+	}
+
 	function isMultineString(line:String):Bool {
 		if (!multilineStringStart && quotesRE.match(line)) {
 			var matched = quotesRE.matched(0);

src/checkstyle/token/TokenStream.hx

@@ -53,7 +53,7 @@ class TokenStream {
 	public inline function error(s:String) {
 		throw formatCurrentPos() + ": " + s;
 	}
-	
+
 	function formatCurrentPos():String {
 		var pos = tokens[current].pos;
 		return new Position(pos.file, pos.min, pos.max).format(bytes);

test/checks/whitespace/IndentationCharacterCheckTest.hx

@@ -30,6 +30,13 @@ class IndentationCharacterCheckTest extends CheckTestCase<IndentationCheckTests>
 		check.severity = SeverityLevel.INFO;
 		assertNoMsg(check, TEST4);
 	}
+
+	public function testFileBoundaryIndentation() {
+		var check = new IndentationCharacterCheck();
+		check.severity = SeverityLevel.INFO;
+		assertNoMsg(check, TEST5_1);
+		assertMsg(check, TEST5_2, "Wrong indentation character (should be tab)");
+	}
 }
 
 @:enum
@@ -60,4 +67,18 @@ abstract IndentationCheckTests(String) to String {
 			}
 		}
 	}";
+
+	var TEST5_1 =
+	"class Test {
+		public function new() {
+			// breaking comment with quote '
+		}
+	}";
+
+	var TEST5_2 =
+	"class Test {
+		public function new() {
+		  // bad indentation here
+		}
+	}";
 }