Class: Optimus::ParsedCalculator::Expr

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

Constant Summary collapse

BINARY_OPERATORS =

All of our literals, etc will ineherit from Expr. This will imbue them with the magic to work with our unary and binary operators.

[:+, :-, :*, :/, :%, :&, :>, :>=, :<, :<=]

Instance Method Summary collapse

Instance Method Details

#-@ ⇒ Object

Prefixes



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# File 'lib/expression_parser/expressions.rb', line 41

def -@
  return PrefixExpr.new(:-, self)
end

#eq(other) ⇒ Object 



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# File 'lib/expression_parser/expressions.rb', line 32

def eq(other)
  return BinaryExpr.new(self, "=".to_sym, other)
end

#logical_and(other) ⇒ Object 



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# File 'lib/expression_parser/expressions.rb', line 24

def logical_and(other)
  return BinaryExpr.new(self, :and, other)
end

#logical_not ⇒ Object 



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# File 'lib/expression_parser/expressions.rb', line 45

def logical_not
  return KeywordPrefixExpr.new(:not, self)
end

#logical_or(other) ⇒ Object 



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# File 'lib/expression_parser/expressions.rb', line 28

def logical_or(other)
  return BinaryExpr.new(self, :or, other)
end

#neq(other) ⇒ Object 



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# File 'lib/expression_parser/expressions.rb', line 36

def neq(other)
  return BinaryExpr.new(self, '!='.to_sym, other)
end

#to_bool(*args) ⇒ Object 



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# File 'lib/expression_parser/expressions.rb', line 49

def to_bool(*args)
  val = evaluate(*args)
  return false if val == ''
  return val
end