psyclone.psyir.backend.visitor
Generic PSyIR visitor code that can be specialised by different back ends.
Classes
PSyIRVisitor
: A generic PSyIR visitor. This is designed to be specialised by
- class psyclone.psyir.backend.visitor.PSyIRVisitor(skip_nodes=False, indent_string=' ', initial_indent_depth=0, check_global_constraints=True)
A generic PSyIR visitor. This is designed to be specialised by a particular back end. By default, global constraints are enforced by calling the validate_global_constraints() method of each Node visited.
- Parameters:
skip_nodes (bool) – If skip_nodes is False then an exception is raised if a visitor method for a PSyIR node has not been implemented, otherwise the visitor silently continues. This is an optional argument which defaults to False.
indent_string (str) – Specifies what to use for indentation. This is an optional argument that defaults to two spaces.
initial_indent_depth (int) – Specifies how much indentation to start with. This is an optional argument that defaults to 0.
check_global_constraints (bool) – whether or not to validate all global constraints when walking the tree. Defaults to True.
- Raises:
TypeError – if any of the supplied parameters are of the wrong type.
Inheritance
- reference_node(node)
This method is called when a Reference instance is found in the PSyIR tree.
- Parameters:
node (
psyclone.psyir.nodes.Reference
) – a Reference PSyIR node.- Returns:
the text representation of this reference.
- Return type:
str
- Raises:
VisitorError – if this node has children.
Exceptions
VisitorError
: Provides a PSyclone-specific error class for errors related to a
- exception psyclone.psyir.backend.visitor.VisitorError(value)
Provides a PSyclone-specific error class for errors related to a PSyIR visitor.
- Parameters:
value (str) – Error message.
Inheritance