Add detailed information printing for debugging

Author: zhossain-info

src/main/java/com/relogiclabs/json/schema/util/DebugUtils.java

@@ -0,0 +1,52 @@
+package com.relogiclabs.json.schema.util;
+
+import com.relogiclabs.json.schema.time.DateTimeContext;
+import com.relogiclabs.json.schema.tree.JsonTree;
+import com.relogiclabs.json.schema.tree.SchemaTree;
+import org.antlr.v4.runtime.Parser;
+import org.antlr.v4.runtime.Recognizer;
+
+import java.util.Collections;
+import java.util.List;
+
+public class DebugUtils {
+
+    public static boolean debugPrint = false;
+
+    public static void print(SchemaTree schemaTree, JsonTree jsonTree) {
+        if(!debugPrint) return;
+        System.out.println("[DEBUG] Schema interpretation:");
+        System.out.println(schemaTree.getRoot());
+        System.out.println("---");
+        System.out.println("[DEBUG] Json interpretation:");
+        System.out.println(jsonTree.getRoot());
+        System.out.println("---");
+    }
+
+    public static void print(JsonTree expectedTree, JsonTree actualTree) {
+        if(!debugPrint) return;
+        System.out.println("[DEBUG] Expected Json interpretation:");
+        System.out.println(expectedTree.getRoot());
+        System.out.println("---");
+        System.out.println("[DEBUG] Actual Json interpretation:");
+        System.out.println(actualTree.getRoot());
+        System.out.println("---");
+    }
+
+    public static void print(Recognizer<?, ?> recognizer) {
+        if(!debugPrint) return;
+        List<String> stack = ((Parser) recognizer).getRuleInvocationStack();
+        Collections.reverse(stack);
+        System.err.println("[DEBUG] Rule stack: " + String.join(" > ", stack));
+    }
+
+    public static void print(DateTimeContext context) {
+        if(!debugPrint) return;
+        System.out.println("[DEBUG] Date and time interpretation: " + context);
+    }
+
+    public static void print(Exception e) {
+        if(!debugPrint) return;
+        System.err.println("[DEBUG] Print of exception: " + e);
+    }
+}