Config generation handles padding after packed booleans (bits) wrong #1057

everything should start with a unit test

java_tools/configuration_definition/src/com/rusefi/ReaderState.java

@@ -46,6 +46,8 @@ public class ReaderState {
         }
 
         ConfigField bitField = new ConfigField(state, bitName, comment, null, BOOLEAN_T, 0, null, false, false, null, -1);
+        if (state.stack.isEmpty())
+            throw new IllegalStateException("Parent structure expected");
         state.stack.peek().addBoth(bitField);
     }
 

java_tools/configuration_definition/src/com/rusefi/test/ConfigFieldParserIssue1057Test.java

@@ -0,0 +1,40 @@
+package com.rusefi.test;
+
+import com.rusefi.ReaderState;
+import com.rusefi.output.JavaFieldsConsumer;
+import org.junit.Test;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.Arrays;
+
+import static org.junit.Assert.assertEquals;
+
+public class ConfigFieldParserIssue1057Test {
+    @Test
+    public void testBitsPadding() throws IOException {
+        ReaderState state = new ReaderState();
+        JavaFieldsConsumer javaFieldsConsumer = new JavaFieldsConsumer(state) {
+            @Override
+            public void startFile() {
+            }
+
+            @Override
+            public void endFile() {
+            }
+        };
+
+        String inputString = "struct pid_s\nbit activateAuxPid1;\n" +
+                "int fieldName;\n" +
+                "end_struct\n";
+        BufferedReader reader = new BufferedReader(new StringReader(inputString));
+
+
+        state.readBufferedReader(reader, Arrays.asList(javaFieldsConsumer));
+
+        assertEquals("\tpublic static final Field ACTIVATEAUXPID1 = Field.create(\"ACTIVATEAUXPID1\", 0, FieldType.BIT, 0);\n" +
+                        "\tpublic static final Field FIELDNAME = Field.create(\"FIELDNAME\", 4, FieldType.INT);\n",
+                javaFieldsConsumer.getJavaFieldsWriter());
+    }
+}