pystencils.flow.flowgraph.EquationsBlock

pystencils.flow.flowgraph.EquationsBlock#

class pystencils.flow.flowgraph.EquationsBlock(assignments, predecessors, name=None)#

A block of symbol assignments in static single-assignment form.

Parameters:
property free_symbols: frozenset[Symbol]#

Free symbols of this node.

A symbol is free if it is used in this node’s equations but not defined in this node. Free symbols must be imported from predecessors.

property exports: frozenset[Symbol]#

Symbols exported by this node

property effects: frozenset[Store | Reduce]#

Effectful assignments in this node

subs(substitutions, **kwargs)#

Apply substitutions to equations in this block. :rtype: EquationsBlock

Note

Substitutions of expressions for symbols (symbol -> expr) are only applied if symbol is a free symbol of this block.

Parameters:

substitutions (Mapping[Basic, Basic])

Return type:

EquationsBlock

replace_predecessors(predecessors)#

Return a copy of this node with a new list of predecessors

Return type:

EquationsBlock

Parameters:

predecessors (Iterable[FlowgraphNode])

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