perf: optimize recursion, avoid stackoverflow on larger scripts (#2672)

libsrc/ffdec_lib/test/com/jpexs/decompiler/flash/ActionScript2LongTest.java

@@ -0,0 +1,71 @@
+/*
+ *  Copyright (C) 2010-2026 JPEXS, All rights reserved.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3.0 of the License, or (at your option) any later version.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.
+ */
+package com.jpexs.decompiler.flash;
+
+import com.jpexs.decompiler.flash.action.Action;
+import com.jpexs.decompiler.flash.action.as2.Trait;
+import com.jpexs.decompiler.flash.configuration.Configuration;
+import com.jpexs.decompiler.flash.helpers.CodeFormatting;
+import com.jpexs.decompiler.flash.helpers.HighlightedTextWriter;
+import com.jpexs.decompiler.flash.helpers.StringBuilderTextWriter;
+import com.jpexs.decompiler.flash.tags.DoActionTag;
+import java.io.BufferedInputStream;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+import static org.testng.Assert.fail;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+
+/**
+ *
+ * @author JPEXS
+ */
+public class ActionScript2LongTest extends ActionScript2TestBase {
+    @BeforeClass
+    public void init() throws IOException, InterruptedException {
+        //Main.initLogging(false);
+        Configuration.autoDeobfuscate.set(false);
+        Configuration.showAllAddresses.set(false);
+        Configuration.pluginPath.set(null);
+        swf = new SWF(new BufferedInputStream(new FileInputStream("testdata/as2_long/as2_long.swf")), false);
+    }
+    
+    @Test
+    public void testLongScript() {      
+        StringBuilder sb = new StringBuilder();
+        StringBuilderTextWriter writer = new StringBuilderTextWriter(new CodeFormatting(), sb);
+
+        DoActionTag doa = getFirstActionTag();
+        try {
+            Action.actionsToSource(new HashMap<>(),doa,  doa.getActions(), "", writer, "UTF-8");
+        } catch (InterruptedException ex) {
+            fail();
+        }
+        
+        String result = sb.toString();
+        if (result.contains("/*")) {
+            fail();
+        }
+        if (!result.contains("\"9999\"")) {
+            fail();
+        }
+    }
+}