1 files changed, 53 insertions, 0 deletions
diff --git a/src/core/src/tonkadur/parser/ContextCycleException.java b/src/core/src/tonkadur/parser/ContextCycleException.java
new file mode 100644
index 0000000..a7f6314
--- /dev/null
+++ b/src/core/src/tonkadur/parser/ContextCycleException.java
@@ -0,0 +1,53 @@
+package tonkadur.parser;
+
+import tonkadur.parser.Location;
+import tonkadur.parser.Origin;
+
+import tonkadur.error.ErrorCategory;
+import tonkadur.error.ErrorLevel;
+
+class ContextCycleException extends ParsingError
+{
+   /***************************************************************************/
+   /**** MEMBERS **************************************************************/
+   /***************************************************************************/
+   /*
+    * Using a Location instead of an Origin here, because the file refers to
+    * something in 'origin' anyway.
+    */
+   protected final Location original_require_location;
+   protected final String filename;
+
+   /***************************************************************************/
+   /**** PUBLIC ***************************************************************/
+   /***************************************************************************/
+   public ContextCycleException
+   (
+      final Origin origin,
+      final Location original_require_location,
+      final String filename
+   )
+   {
+      super(ErrorLevel.FATAL, ErrorCategory.INVALID_INPUT, origin);
+
+      this.original_require_location = original_require_location;
+      this.filename = filename;
+   }
+
+   @Override
+   public String toString ()
+   {
+      final StringBuilder sb = new StringBuilder();
+
+      sb.append(origin.get_context().toString());
+      sb.append("Cyclic dependency for file '");
+      sb.append(filename);
+      sb.append("' required at ");
+      sb.append(origin.get_location().toString());
+      sb.append(" when it was already required at ");
+      sb.append(original_require_location.toString());
+      sb.append(".");
+
+      return sb.toString();
+   }
+}