Class: Qwe::Function

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, name) ⇒ Function

Returns a new instance of Function.



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# File 'lib/qwe/function.rb', line 20

def initialize(klass, name)
  self.klass = klass
  self.name = name
  self.class.instances.push(self)
  Qwe[klass, :functions, name] = self

  unless klass.respond_to?(:compile)
    klass.define_singleton_method(:compile) do
      Qwe[self, :functions].each do |n, f|
        f.compile
      end
    end
  end
end

Instance Attribute Details

#klass ⇒ Object

Returns the value of attribute klass.



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# File 'lib/qwe/function.rb', line 5

def klass
  @klass
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/qwe/function.rb', line 6

def name
  @name
end

Class Method Details

.compile(klass, name) {|f| ... } ⇒ Object

Yields:

  • (f) 


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# File 'lib/qwe/function.rb', line 92

def self.compile(klass, name, &block)
  f = Qwe::Function.new(klass, name)
  yield f
  f.compile
end

.compile_all ⇒ Object 



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# File 'lib/qwe/function.rb', line 16

def self.compile_all
  instances.each(&:compile)
end

.instances ⇒ Object 



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# File 'lib/qwe/function.rb', line 12

def self.instances
  @@instances ||= []
end

Instance Method Details

#arg(name, default = nil) ⇒ Object 



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# File 'lib/qwe/function.rb', line 39

def arg(name, default = nil)
  args[name] = default
end

#args ⇒ Object 



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# File 'lib/qwe/function.rb', line 35

def args
  @args ||= {}
end

#code ⇒ Object 



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# File 'lib/qwe/function.rb', line 60

def code
  rb = "def #{name}(" + \
    ((args.to_a.map { |a| "#{a[0]} = #{a[1].to_rb}" }) + \
    (keywords.to_a.map { |a| "#{a[0]}: #{a[1].to_rb}" })).join(", ") + \
    ")\n"
  stages.each do |s|
    rb += "  " + s + "\n"
  end
  rb += "end"
end

#compile ⇒ Object 



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# File 'lib/qwe/function.rb', line 71

def compile
  return if @compiled

  begin
    klass.module_eval(code)
  rescue ScriptError, StandardError => e
    log "Error compiling #{klass}.#{name}, code is: \n#{code}\n"
    raise e
  end

  @compiled = true
end

#compiled? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/qwe/function.rb', line 84

def compiled?
  @compiled
end

#inspect ⇒ Object 



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# File 'lib/qwe/function.rb', line 88

def inspect
  "\nFunction #{klass}.#{name}\n#{code}\n"
end

#keyword(name, default = nil) ⇒ Object 



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# File 'lib/qwe/function.rb', line 47

def keyword(name, default = nil)
  keywords[name] = default
end

#keywords ⇒ Object 



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# File 'lib/qwe/function.rb', line 43

def keywords
  @keywords ||= {}
end

#stage(code) ⇒ Object 



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# File 'lib/qwe/function.rb', line 55

def stage(code)
  @compiled = false
  stages.push(code) if code
end

#stages ⇒ Object 



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# File 'lib/qwe/function.rb', line 51

def stages
  @stages ||= []
end