Class: Dslh::ScopeBlock

Inherits:
Object
  • Object
show all
Defined in:
lib/dslh.rb

Overview

of Scope

Class Method Summary collapse

Class Method Details

.nest(bind, block_var, key = nil) ⇒ Object 



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# File 'lib/dslh.rb', line 215

def self.nest(bind, block_var, key = nil)
  block_call = nil

  if key
    block_call = "      \#{block_var}_ = proc do\n        if \#{block_var}.arity.zero?\n          \#{block_var}.call\n        else\n          \#{block_var}.call(\#{key.inspect})\n        end\n      end\n\n      self.instance_eval(&\#{block_var}_)\n    EOS\n  else\n    block_call = <<-EOS\n      self.instance_eval(&\#{block_var})\n    EOS\n  end\n\n  eval(<<-EOS, bind)\n    if \#{block_var}\n      __hash_orig = @__hash__\n      @__hash__ = {}\n      \#{block_call}\n      __nested_hash = @__hash__\n      @__hash__ = __hash_orig\n      __nested_hash\n    else\n      nil\n    end\n  EOS\nend\n"