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Contents
# Author:: Eric Crane (mailto:eric.crane@mac.com)
# Copyright:: Copyright (c) 2019 Eric Crane. All rights reserved.
#
# An Operator; part of an expression.
# A static helper class.
#
module GlooLang
module Core
class Op
#
# Is the token an operator?
#
def self.op?( token )
return [ '+', '-', '*', '/' ].include?( token.strip )
end
#
# Create the operator for the given token.
#
def self.create_op( token )
return GlooLang::Expr::OpMinus.new if token == '-'
return GlooLang::Expr::OpMult.new if token == '*'
return GlooLang::Expr::OpDiv.new if token == '/'
return GlooLang::Expr::OpPlus.new if token == '+'
return default_op
end
#
# Get the default operator (+).
#
def self.default_op
return GlooLang::Expr::OpPlus.new
end
end
end
end
Version data entries
29 entries across 29 versions & 1 rubygems