View Source Nx.Defn.Tree (Nx v0.7.2)
Helper functions to traverse defn expressions, either as single nodes or in-depth.
Summary
Functions
Applies the given function to the arguments of the node, with the given accumulator as a starting value.
Check if the given tree has any of the given hooks in it.
Puts new args in the given tensor expression and gives it a new id.
Gets all IDs of all elements in the same scope.
Functions
Applies the given function to the arguments of the node, with the given accumulator as a starting value.
By default, type
is :all
, which means all arguments
are traversed. If type
is :scope
, only expressions
that are in the same scope are traversed. Therefore,
expressions such as while
's condition and body,
optional
's default implementation, functions, and so forth
are not traversed. Note cond
s are always traversed because,
while they introduce a new scope, they can also access its
parents directly, so you must take cond
s into account
accordingly.
Warning: be very careful when using this function to traverse
the expression recursively. If you plan to do so, you should
consider also storing the visited nodes to avoid multiple
traversals by using tensor.data.expr.id
as cache key.
Check if the given tree has any of the given hooks in it.
Puts new args in the given tensor expression and gives it a new id.
Gets all IDs of all elements in the same scope.
while
's condition and body, fun
's body and similar are
considered different scopes. When it comes to cond
, an ID will
only be considered if it is used outside of the cond
or used
in several distinct conds. Constants are also ignored, as they
have global IDs based on the constants themselves.
An existing maps of ids
can be given to accumulate on top of it.