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# File 'lib/interscript/compiler/javascript.rb', line 130
def build_regexp(r, map=@map)
from = compile_item(r.from, map, :re)
before = compile_item(r.before, map, :re) if r.before
after = compile_item(r.after, map, :re) if r.after
not_before = compile_item(r.not_before, map, :re) if r.not_before
not_after = compile_item(r.not_after, map, :re) if r.not_after
re = ""
re += "(?<=#{before})" if before
re += "(?<!#{not_before})" if not_before
re += from
re += "(?!#{not_after})" if not_after
re += "(?=#{after})" if after
re
end
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