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Contents
# Author:: Eric Crane (mailto:eric.crane@mac.com)
# Copyright:: Copyright (c) 2019 Eric Crane. All rights reserved.
#
# An Expression that can be evaluated.
#
module GlooLang
module Expr
class LString < GlooLang::Core::Literal
#
# Set the value, triming opening and closing
# quotations if necessary.
#
def set_value( value )
@value = value
return unless value
@value = LString.strip_quotes( @value )
end
#
# Is the given token a string?
#
def self.string?( token )
return false unless token.is_a? String
return true if token.start_with?( '"' )
return true if token.start_with?( "'" )
return false
end
#
# Given a string with leading and trailing quotes,
# strip them out.
#
def self.strip_quotes( str )
if str.start_with?( '"' )
str = str[ 1..-1 ]
str = str[ 0..-2 ] if str.end_with?( '"' )
return str
elsif str.start_with?( "'" )
str = str[ 1..-1 ]
str = str[ 0..-2 ] if str.end_with?( "'" )
return str
end
end
#
# Get string representation
#
def to_s
return self.value
end
end
end
end
Version data entries
29 entries across 29 versions & 1 rubygems