Scalar access exception messages improved

Author: remorhaz

src/Pointer/Evaluate/LocatorRead.php

@@ -59,6 +59,6 @@ protected function createReferenceEvaluateUnknownIndex(Reference $reference)
 
     protected function createReferenceEvaluateScalar(Reference $reference)
     {
-        throw new EvaluateException("Cannot read non-structured data by reference");
+        throw new EvaluateException("Cannot read non-structured data by reference '{$reference->getText()}'");
     }
 }

src/Pointer/Evaluate/LocatorTest.php

@@ -60,6 +60,6 @@ protected function createReferenceEvaluateUnknownIndex(Reference $reference)
 
     protected function createReferenceEvaluateScalar(Reference $reference)
     {
-        throw new EvaluateException("Cannot test non-structured data by reference");
+        throw new EvaluateException("Cannot test non-structured data by reference '{$reference->getText()}'");
     }
 }

src/Pointer/Evaluate/LocatorWrite.php

@@ -117,6 +117,6 @@ protected function createReferenceEvaluateUnknownIndex(Reference $reference)
 
     protected function createReferenceEvaluateScalar(Reference $reference)
     {
-        throw new EvaluateException("Cannot write non-structured data by reference");
+        throw new EvaluateException("Cannot write non-structured data by reference '{$reference->getText()}'");
     }
 }