Class: Eqn::Terminal::Variable

Inherits:

Treetop::Runtime::SyntaxNode

• Object
• Treetop::Runtime::SyntaxNode
• Eqn::Terminal::Variable

Defined in:

lib/eqn/terminal.rb

Instance Method Summary

• #value ⇒ Object

Instance Method Details

#value ⇒ Object

Raises:

• (NoVariableValueError)

# File 'lib/eqn/terminal.rb', line 4

def value
  val = Eqn::Calculator.class_variable_get(:@@vars)[text_value.intern]
  raise NoVariableValueError, "No value given for: #{text_value}" unless val
  raise NonNumericVariableError, "Variable #{text_value} value is nonnumeric: #{val}" unless val.is_a? Numeric
  val
end