Module: Babl::Operators::Call::DSL
- Included in:
- Template
- Defined in:
- lib/babl/operators/call.rb
Instance Method Summary collapse
-
#call(*args, &block) ⇒ Object
Interpret whatever is passed to this method as BABL template.
Instance Method Details
#call(*args, &block) ⇒ Object
Interpret whatever is passed to this method as BABL template. It is idempotent.
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# File 'lib/babl/operators/call.rb', line 10 def call(*args, &block) if block raise Errors::InvalidTemplate, 'call() expects no argument when a block is given' unless args.empty? # The 'block' is wrapped by #selfify such that there is no implicit closure referencing the current # template. Ideally, once a template has been compiled, all intermediate template objects should be # garbage collectable. return with(unscoped, &Utils::Proc.selfify(block)) end raise Errors::InvalidTemplate, 'call() expects exactly 1 argument (unless block)' unless args.size == 1 arg = args.first case arg when Template then self.class.new(builder.wrap { |bound| arg.builder.bind(bound) }) when Utils::DslProxy then call(arg.itself) when ::Proc then call(&arg) when ::Hash then object(arg) when ::Array then array(*arg) when ::String, ::Numeric, ::NilClass, ::TrueClass, ::FalseClass, ::Symbol then static(arg) else raise Errors::InvalidTemplate, "call() received invalid argument: #{arg}" end end |