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# File 'lib/kalc/repl.rb', line 12
def run
puts heading
load_env
puts 'You are ready to go. Have fun!'
puts ''
function_list = %w(quit exit functions variables ast) + @kalc.interpreter.env.functions.map { |f| f.first }
begin
comp = proc { |s| function_list.grep(/^#{Regexp.escape(s)}/) }
Readline.completion_append_character = ''
Readline.completion_proc = comp
while input = Readline.readline("kalc-#{Kalc::VERSION} > ", true)
begin
case
when (input == 'quit' || input == 'exit')
break
when input == 'functions'
puts @kalc.interpreter.env.functions.map { |f| f.first }.join(', ')
when input == 'variables'
puts @kalc.interpreter.env.variables.map { |v| "#{v[0]} = #{v[1]}" }.join("\n\r")
when input == 'reload'
load_env
when input == 'ast'
pp @kalc.ast
when input != ''
puts @kalc.run(input)
end
rescue Parslet::ParseFailed => e
puts e, g.root.error_tree
rescue Exception => e
puts e
puts e.backtrace
end
end
rescue Exception => e
puts e
puts e.backtrace
end
end
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