Fixed problem with switch not working unless it is inside a loop. Closes #280

src/main/java/dk/camelot64/kickc/passes/Pass0GenerateStatementSequence.java

@@ -974,12 +974,17 @@ public class Pass0GenerateStatementSequence extends KickCBaseVisitor<Object> {
 
    @Override
    public Object visitStmtSwitch(KickCParser.StmtSwitchContext ctx) {
-      Loop containingLoop = loopStack.peek();
+      Loop containingLoop = null;
+      if(!loopStack.isEmpty()) {
+         containingLoop = loopStack.peek();
+      }
       // Create a block scope - to keep all statements of the loop inside it
       BlockScope blockScope = getCurrentScope().addBlockScope();
       scopeStack.push(blockScope);
       Loop switchLoop = new Loop(blockScope);
+      if(containingLoop != null) {
          switchLoop.setContinueLabel(containingLoop.getOrCreateContinueLabel());
+      }
       loopStack.push(switchLoop);
       List<Comment> comments = ensureUnusedComments(getCommentsSymbol(ctx));
       // TODO: Add comments to next stmt

src/test/java/dk/camelot64/kickc/test/TestPrograms.java

@@ -86,6 +86,11 @@ public class TestPrograms {
    //   compileAndCompare("loophead-problem");
    //}
 
+   @Test
+   public void testSwitch2() throws IOException, URISyntaxException {
+      compileAndCompare("switch-2");
+   }
+
    @Test
    public void testSwitch1() throws IOException, URISyntaxException {
       compileAndCompare("switch-1");

src/test/kc/switch-2.kc

@@ -0,0 +1,12 @@
+// Tests simple switch()-statement - including a continue statement for the enclosing loop
+
+void main() {
+    char* SCREEN = 0x0400;
+    char b=0;
+    char v64 = 0;
+    switch(v64){
+        case 0: b = 1; break;
+        default:
+    }
+    SCREEN[0] = b;
+}