Class: Fabulator::Expr::Function

Inherits:
Object
  • Object
show all
Defined in:
lib/fabulator/expr/function.rb

Instance Method Summary collapse

Constructor Details

#initialize(ctx, nom, args) ⇒ Function

Returns a new instance of Function.



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# File 'lib/fabulator/expr/function.rb', line 4

def initialize(ctx, nom, args)
  nom.gsub(/\s+/, '')
  bits = nom.split(/:/, 2)
  @ns = ctx.get_ns(bits[0])
  @name = bits[1]
  if @name =~ /^(.+)\*$/
    @name = "consolidation:#{$1}"
  end
  @args = args
  @ctx = ctx
end

Instance Method Details

#expr_type(context) ⇒ Object 



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# File 'lib/fabulator/expr/function.rb', line 16

def expr_type(context)
  return [ FAB_NS, 'boolean' ] if @name =~ /\?$/
  klass = TagLib.namespaces[@ns]
  (klass.function_return_type(@name) rescue nil)
end

#run(context, autovivify = false) ⇒ Object 



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# File 'lib/fabulator/expr/function.rb', line 22

def run(context, autovivify = false)
  klass = TagLib.namespaces[@ns]
  return [] if klass.nil?
  ctx = @ctx.merge(context)
  ret = klass.run_function(
    ctx, @name, @args.run(ctx)
  )
  if @name =~ /\?$/
    ret = ret.collect{ |v| v.to([FAB_NS, 'boolean']) }
  end
  ret
end