Define ArrayContext.permits_advanced_indexing

arraycontext/context.py

@@ -361,6 +361,14 @@ class ArrayContext(ABC):
     def supports_nonscalar_broadcasting(self):
         pass
 
+    @abstractproperty
+    def permits_advanced_indexing(self):
+        """
+        *True* only if the arrays support :mod:`numpy`'s advanced indexing
+        semantics.
+        """
+        pass
+
 # }}}
 
 # vim: foldmethod=marker

arraycontext/impl/pyopencl/__init__.py

@@ -282,6 +282,10 @@ class PyOpenCLArrayContext(ArrayContext):
     def supports_nonscalar_broadcasting(self):
         return False
 
+    @property
+    def permits_advanced_indexing(self):
+        return False
+
 # }}}
 
 # vim: foldmethod=marker

arraycontext/impl/pytato/__init__.py

@@ -231,3 +231,7 @@ class PytatoPyOpenCLArrayContext(ArrayContext):
     @property
     def supports_nonscalar_broadcasting(self):
         return True
+
+    @property
+    def permits_advanced_indexing(self):
+        return True