Module: HDLRuby::Low::MutableConcat

Included in:
Concat, RefConcat
Defined in:
lib/HDLRuby/hruby_low_mutable.rb

Overview

Module adding some (but not all) mutable methods to Concat and RefConcat.

Instance Method Summary collapse

Instance Method Details

#replace_expressions!(node2rep) ⇒ Object

Replaces sub expressions using +node2rep+ table indicating the node to replace and the corresponding replacement. Returns the actually replaced nodes and their corresponding replacement.

NOTE: the replacement is duplicated.



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# File 'lib/HDLRuby/hruby_low_mutable.rb', line 1645

def replace_expressions!(node2rep)
    # First recurse on the children.
    res = {}
    self.each_node do |node|
        res.merge!(node.replace_expressions!(node2rep))
    end
    # Is there a replacement of on a sub node?
    self.map_nodes! do |sub|
        rep = node2rep[sub]
        if rep then
            # Yes, do it.
            rep = rep.clone
            node = sub
            # node.set_parent!(nil)
            # And register the replacement.
            res[node] = rep
            rep
        else
            sub
        end
    end
    return res
end