Module: Deplate::Rx

Defined in:
lib/deplate/etc.rb

Class Method Summary collapse

Class Method Details

.builder(rx_source, rx_opts = nil, depth = 5, sol = true) ⇒ Object

This function builds recursive regular expressions that are used for parsing macros and skeletons. The optional argument defines the depth of nested macros for which the regular expression is being built. The default is 5 which should be sufficient due to the primitivity of the macro language. The string “#” is replaced with the regexp itself.



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# File 'lib/deplate/etc.rb', line 19

def builder(rx_source, rx_opts=nil, depth=5, sol=true)
    rxr = rx_source.gsub('\\', '\\\\\\\\')
    for i in 1..depth
        rx_source.gsub!(/\{#\}/, rxr)
    end
    rx_source.gsub!(/\{#\}/, '[^{}]+?')
    rx_source = '^' + rx_source if sol
    return Regexp.new(rx_source, rx_opts)
end