Class: JsShuffle::Methods::VariableRenaming

Inherits:
Method
  • Object
show all
Defined in:
lib/jsshuffle/methods/variable_renaming.rb

Overview

Replaces local variable names with a randomly generated new one

pass :variable_renaming in the :use array of a Parser to use this Method.

Instance Method Summary collapse

Methods inherited from Method

#configure, #default_config, inherited, #postprocess, #preprocess

Instance Method Details

#process(ast, shuffler) ⇒ Object 



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# File 'lib/jsshuffle/methods/variable_renaming.rb', line 8

def process( ast, shuffler )
    sourceNodes = ast.select { |node| node.is_a? RKelly::Nodes::SourceElementsNode }
    sourceNodes.each do |node|
        renamed_variables = {} 
        node.value.each do |child|
            if child.is_a? RKelly::Nodes::VarStatementNode
                renamed_variables[child.value.first.name] = (child.value.first.name = shuffler.random_new_name )
            elsif child.is_a? RKelly::Nodes::ResolveNode
                child.value = renamed_variables[child.value] if renamed_variables.has_key? child.value
            else
                child.each { |n| n.value = renamed_variables[n.value] if n.is_a? RKelly::Nodes::ResolveNode and renamed_variables.has_key? n.value }
            end
        end
    end
end