Class: Bricolage::Variables

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

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Variables

Returns a new instance of Variables.



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# File 'lib/bricolage/variables.rb', line 20

def initialize
  @vars = {}
end

Class Method Details

.define ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 14

def Variables.define
  new.tap {|vars|
    yield vars
  }
end

.union(*vars_list) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 6

def Variables.union(*vars_list)
  new.tap {|result|
    vars_list.each do |vars|
      result.update vars
    end
  }
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 36

def [](name)
  var = @vars[name] or raise ParameterError, "no such variable: #{name}"
  var.value
end

#[]=(name, value) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 46

def []=(name, value)
  add Variable.new(name, value)
end

#add(var) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 54

def add(var)
  @vars[var.name] = var
end

#each_variable(&block) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 32

def each_variable(&block)
  @vars.each_value(&block)
end

#get_force(name) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 41

def get_force(name)
  var = @vars[name]
  var ? var.value : nil
end

#inspect ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 24

def inspect
  "\#<#{self.class} #{@vars.inspect}>"
end

#keys ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 50

def keys
  @vars.keys
end

#resolve ⇒ Object

resolve self recursively



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# File 'lib/bricolage/variables.rb', line 65

def resolve
  ResolvedVariables.define {|resolved|
    @vars.each_value do |var|
      resolved.add do_expand_variable(var, resolved, {})
    end
  }
end

#resolve_with(resolved) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 98

def resolve_with(resolved)
  raise "[BUG] unresolved variables given" unless resolved.resolved?
  ResolvedVariables.define {|result|
    each_variable do |var|
      if var.resolved?
        result.add var
      else
        val = resolved.expand(var.value.to_s)
        result.add ResolvedVariable.new(var.name, val)
      end
    end
  }
end

#resolved? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bricolage/variables.rb', line 28

def resolved?
  false
end

#update(vars) ⇒ Object 



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# File 'lib/bricolage/variables.rb', line 58

def update(vars)
  vars.each_variable do |var|
    add var
  end
end