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oryx.core.interpreters.propagate.Cell

Base interface for objects used during propagation.

Inherits From: Pytree

A Cell represents a member of a lattice, defined by the top, bottom and join methods. Conceptually, a "top" cell represents complete information about a value and a "bottom" cell represents no information about a value. Cells that are neither top nor bottom thus have partial information. The join method is used to combine two cells to create a cell no less than the two input cells. During the propagation, we hope to join cells until all cells are "top".

Transformations that use propagate need to pass in objects that are Cell-like. A Cell needs to specify how to create a new default cell from a literal value, using the new class method. A Cell also needs to indicate if it is a known value with the is_unknown method, but by default, Cells are known.

ndim

shape

Methods

bottom

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flatten

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is_unknown

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join

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new

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Creates a new instance of a Cell from a value.

top

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unflatten

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unknown

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Creates an unknown Cell from an abstract value.

__lt__

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Return self<value.