Class: RLTK::CG::Function::ParameterCollection

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/rltk/cg/function.rb

Overview

This class is used to access a function’s parameters.

Instance Method Summary collapse

Constructor Details

#initialize(fun) ⇒ ParameterCollection

Returns a new instance of ParameterCollection.

Parameters:

  • fun (Function) —

    Function for which this is a proxy.



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# File 'lib/rltk/cg/function.rb', line 183

def initialize(fun)
	@fun = fun
end

Instance Method Details

#[](index) ⇒ Value

Access the parameter at the given index.

Parameters:

  • index (Integer) —

    Index of the desired parameter. May be negative.

Returns:

  • (Value) —

    Value object representing the parameter.



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# File 'lib/rltk/cg/function.rb', line 192

def [](index)
	index += self.size if index < 0
	
	if 0 <= index and index < self.size
		Value.new(Bindings.get_param(@fun, index))
	end
end

#each {|val| ... } ⇒ Enumerator

An iterator for each parameter inside this collection.

Yield Parameters:

Returns:

  • (Enumerator) —

    Returns an Enumerator if no block is given.



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# File 'lib/rltk/cg/function.rb', line 205

def each
	return to_enum :each unless block_given?
	
	self.size.times { |index| yield self[index] }
	
	self
end

#size ⇒ Integer

Returns Number of function parameters.

Returns:

  • (Integer) —

    Number of function parameters.



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# File 'lib/rltk/cg/function.rb', line 214

def size
	Bindings.count_params(@fun)
end

#to_a ⇒ Array<Value>

Returns Array of Value objects representing the function parameters.

Returns:

  • (Array<Value>) —

    Array of Value objects representing the function parameters.



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# File 'lib/rltk/cg/function.rb', line 219

def to_a
	self.size.times.to_a.inject([]) { |params, index| params << self[index] }
end