Class: Dhallish::Ast::VariableNode

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(varname) ⇒ VariableNode

Returns a new instance of VariableNode.



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# File 'lib/ast.rb', line 104

def initialize(varname)
	@varname = varname
end

Instance Attribute Details

#varname ⇒ Object

Returns the value of attribute varname.



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# File 'lib/ast.rb', line 103

def varname
  @varname
end

Instance Method Details

#compute_type(ctx) ⇒ Object

returns a Type for a defined Variable @varname that does not have Type ‘Type’ returns a Value of Type ‘Type’ if @varname is a Typevariable



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# File 'lib/ast.rb', line 110

def compute_type(ctx)
	assert ("Undefined Variable \"#{@varname}\"") { !ctx[@varname].nil? }
	type = ctx[@varname]
	assert ("WTF?!") { Types::is_a_type? type }
	ctx[@varname]
end

#evaluate(ctx) ⇒ Object 



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# File 'lib/ast.rb', line 117

def evaluate(ctx)
	ctx[@varname]
end