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Versions: 9
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Contents
module Spider; module QueryFuncs
class Expression
def initialize(string)
@string = string
@replacements = {}
end
def each_element
@string.scan(/:\w[\w\d\.]+/).each{ |el| yield el[1..-1].to_sym }
end
def []=(el, replacement)
@replacements[el] = replacement
end
def to_s
str = @string
@replacements.each do |el, rep|
str = str.gsub(":#{el}", rep)
end
return str
end
end
class Function
attr_accessor :mapper_fields
def self.func_name
self.name =~ /::([^:]+)$/
return Inflector.underscore($1).to_sym
end
def func_name
self.class.func_name
end
def elements
[]
end
def inner_elements
els = []
elements.each do |el|
if (el.is_a?(Function))
els += el.inner_elements
else
els << [el, self]
end
end
return els
end
end
class ZeroArityFunction < Function
end
class UnaryFunction < Function
def initialize(el)
@el = el
end
def elements
[@el]
end
end
class BinaryFunction < Function
def initialize(el1, el2)
@el1 = el1
@el2 = el2
end
def elements
[@el1, @el2]
end
end
class CurrentDate < ZeroArityFunction
end
class Length < UnaryFunction
end
class Trim < UnaryFunction
end
class Subtract < BinaryFunction
end
end; end
Version data entries
9 entries across 9 versions & 1 rubygems