Class: Sapluuna::Context

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

Defined Under Namespace

Classes: VariableMissing

Constant Summary collapse

RootDirectory = 
'.'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(opts) ⇒ Context

Returns a new instance of Context.



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# File 'lib/sapluuna/context.rb', line 9

def initialize opts
  @opts                 = opts.dup
  @discover_variables   = opts.delete :discover_variables
  @variables            = (opts.delete(:variables) or {})
  @root_directory       = (opts.delete(:root_directory) or RootDirectory)
  @output               = ''
  @discovered_variables = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args) ⇒ Object (private) 



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# File 'lib/sapluuna/context.rb', line 73

def method_missing method, *args
  if Array === args.first
    value = args.first.last
    case args.first.first
    when :is
      @variables[method] ||= value
    when :are
      @variables[method] ||= value.to_s.strip.split(/\s+/)
    end
    ""
  elsif @variables[method]
    @variables[method]
  else
    if @discover_variables
      args ||= ['']
      @discovered_variables[method] = args[0] unless @discovered_variables.has_key? method
      ""
    else
      raise VariableMissing, "variable '#{method}' required, but not given"
    end
  end
end

Instance Attribute Details

#discovered_variables ⇒ Object (readonly)

Returns the value of attribute discovered_variables.



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# File 'lib/sapluuna/context.rb', line 3

def discovered_variables
  @discovered_variables
end

#variables ⇒ Object (readonly)

Returns the value of attribute variables.



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# File 'lib/sapluuna/context.rb', line 3

def variables
  @variables
end

Instance Method Details

#are(value) ⇒ Object 



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# File 'lib/sapluuna/context.rb', line 30

def are value
  [:are, value]
end

#cfg(value) ⇒ Object 



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# File 'lib/sapluuna/context.rb', line 18

def cfg value
  @output << value
end

#code(value) ⇒ Object 



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# File 'lib/sapluuna/context.rb', line 22

def code value
  @output << eval(value).to_s
end

#is(value) ⇒ Object 



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# File 'lib/sapluuna/context.rb', line 34

def is value
  [:is, value]
end

#silent(*args) ⇒ Object 



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# File 'lib/sapluuna/context.rb', line 38

def silent *args
  ""
end

#str ⇒ Object 



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# File 'lib/sapluuna/context.rb', line 26

def str
  @output
end