Class: Schaefer::Environment

Inherits:
Object
  • Object
show all
Defined in:
lib/schaefer/environment.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent = nil) ⇒ Environment

Returns a new instance of Environment.



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# File 'lib/schaefer/environment.rb', line 5

def initialize(parent = nil)
	@parent = parent
	@table = {}
end

Instance Attribute Details

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/schaefer/environment.rb', line 3

def parent
  @parent
end

Instance Method Details

#define(name, value) ⇒ Object 



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# File 'lib/schaefer/environment.rb', line 16

def define(name, value)
	@table[name] = value
end

#find(name) ⇒ Object 



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# File 'lib/schaefer/environment.rb', line 10

def find(name)
	return @table[name] if @table.has_key?(name)
	return nil if @parent.nil?
	return @parent.find(name)
end

#removeDefinition(name) ⇒ Object 



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# File 'lib/schaefer/environment.rb', line 20

def removeDefinition(name)
end