Class: Postscript::Model::Operators::Stack::Index

Inherits:

Postscript::Model::Operator

• Object
• Postscript::Model::Operator
• Postscript::Model::Operators::Stack::Index

Defined in:

lib/postscript/model/operators/stack.rb

Instance Attribute Summary

• #index ⇒ Object readonly

  Returns the value of attribute index.

Class Method Summary

• .from_operands(stack) ⇒ Object

Instance Method Summary

• #initialize(index:) ⇒ Index constructor

  A new instance of Index.

Methods inherited from Postscript::Model::Operator

#accept, #operator?, register_as

Constructor Details

#initialize(index:) ⇒ Index

Returns a new instance of Index.

# File 'lib/postscript/model/operators/stack.rb', line 38

def initialize(index:)
  @index = index
  freeze
end

Instance Attribute Details

#index ⇒ Object (readonly)

Returns the value of attribute index.

# File 'lib/postscript/model/operators/stack.rb', line 37

def index
  @index
end

Class Method Details

.from_operands(stack) ⇒ Object

# File 'lib/postscript/model/operators/stack.rb', line 42

def self.from_operands(stack)
  new(index: stack.pop_number.to_i)
end