allows translated panics from hgs

src/main/java/de/neemann/digital/hdl/hgs/Context.java

@@ -8,6 +8,7 @@ package de.neemann.digital.hdl.hgs;
 import de.neemann.digital.hdl.hgs.function.Func;
 import de.neemann.digital.hdl.hgs.function.Function;
 import de.neemann.digital.hdl.hgs.function.InnerFunction;
+import de.neemann.digital.lang.Lang;
 
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -276,12 +277,27 @@ public class Context {
 
     private static final class FunctionPanic extends Function {
         private FunctionPanic() {
-            super(1);
+            super(-1);
         }
 
         @Override
         protected Object f(Object... args) throws HGSEvalException {
-            throw new HGSEvalException(args[0].toString());
+            if (args.length == 0)
+                throw new HGSEvalException("panic");
+
+            String message = args[0].toString();
+            if (message.startsWith("err_")) {
+                if (args.length == 1)
+                    message = Lang.get(message);
+                else {
+                    String[] ar = new String[args.length - 1];
+                    for (int i = 0; i < args.length - 1; i++)
+                        ar[i] = args[i + 1].toString();
+                    message = Lang.get(message, ar);
+                }
+            }
+
+            throw new HGSEvalException(message);
         }
     }
 

src/test/java/de/neemann/digital/hdl/hgs/ParserTest.java

@@ -495,6 +495,18 @@ public class ParserTest extends TestCase {
         }
     }
 
+    public void testPanic2() throws IOException, ParserException, HGSEvalException {
+        Statement s = new Parser("<? panic(\"err_varNotDefined_N\",\"hello\"); ?>").parse();
+
+        try {
+            exec(s);
+            fail();
+        } catch (HGSEvalException e) {
+            assertTrue(e.getMessage().contains("hello"));
+            assertFalse(e.getMessage().contains("err_"));
+        }
+    }
+
     public void testTrim() throws IOException, ParserException, HGSEvalException {
         assertEquals(" 5", exec(" <?=5;-?> ").toString());
         assertEquals("5 ", exec(" <?-=5?> ").toString());