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Treetop::Compiler::PredicateBlock

Public Instance Methods

compile(index, builder, parent_expression = nil) click to toggle source 
    # File lib/treetop/compiler/node_classes/predicate_block.rb, line 4
 4:       def compile(index, builder, parent_expression = nil)
 5:         super
 6:         # REVISIT: This is distinctly dodgey, but since we can only be called from
 7:         # two contexts, and it works in both those, I'm going with it for now, as
 8:         # opposed to doing the major refactor of providing a proper way of accessing
 9:         # the parent's accumulator variable.
10:         p = parent
11:         p = p.parent while p && !p.respond_to?(:accumulator_var)
12:         assign_result "lambda #{text_value}.call(#{p ? p.accumulator_var : ""})"
13:       end

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