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Contents
# frozen_string_literal: true
module Dendroid
# This module contains for all classes representing elements of .
module Syntax
# Abstract class for grammar symbols.
# A grammar symbol is an element that appears in grammar rules.
class GrmSymbol
# @return [String] The name of the grammar symbol
attr_reader :name
# Constructor.
# aSymbolName [String] The name of the grammar symbol.
def initialize(symbolName)
@name = valid_name(symbolName)
end
# The String representation of the grammar symbol
# @return [String]
def to_s
name.to_s
end
# Equality testing (based on symbol names)
# @return [Boolean]
def ==(other)
name == other.name
end
private
def valid_name(symbolName)
if symbolName.is_a?(String)
stripped = symbolName.strip
if stripped.empty?
err_msg = 'A symbol name cannot be empty.'
raise StandardError, err_msg
end
stripped.to_sym
else
symbolName
end
end
end # class
end # module
end # module
Version data entries
9 entries across 9 versions & 1 rubygems