class Object

Constants

DEFAULT_NEWLINES

!/usr/bin/env -S ruby -W0

vim: ft=ruby:syntax=ruby

KEYWORDS_REGEX

Public Instance Methods

comment?(line) click to toggle source

true if line is a comment

# File lib/ruval.rb, line 40
def comment?(line)
  line.strip[0] == '#'
end

help() click to toggle source

# File lib/ruval.rb, line 20
def help
  puts <<~e
    Usage: #{prog} <file> [option]
    Print the value of statements in a file

    Options:
      -h, --help    print this message
      -n N          line spacing between evaluations (non-negative value, default 1)
  e
  exit
end

prog() click to toggle source

# File lib/ruval.rb, line 16
def prog
  File.basename $0
end

update_scope(line, line_stack, scope) click to toggle source

# File lib/ruval.rb, line 72
def update_scope(line, line_stack, scope)
  keywords = line.scan(KEYWORDS_REGEX)
  return if keywords.empty? && scope.empty?
  line_stack << line
  keywords.each do |kw|
    unless %w"end } ] )".include?(kw)
      scope.push kw
    else
      scope.pop
    end
  end
end