104 lines
2.6 KiB
Ruby
Executable file
104 lines
2.6 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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# frozen_string_literal: true
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require 'English'
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require 'optparse'
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require 'readline'
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require 'rpl'
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class RplRepl
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def initialize( interpreter: Rpl.new )
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@interpreter = interpreter
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end
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def run
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print_stack unless @interpreter.stack.empty?
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Readline.completion_proc = proc do |s|
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( @interpreter.dictionary.words.keys + @interpreter.dictionary.vars.keys ).grep(/^#{Regexp.escape(s)}/)
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end
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Readline.completion_append_character = ' '
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loop do
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input = Readline.readline( ' ', true )
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break if input.nil? || input == 'quit'
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pp Readline::HISTORY if input == 'history'
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# Remove blank lines from history
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Readline::HISTORY.pop if input.empty?
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begin
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@interpreter.run( input )
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rescue ArgumentError => e
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pp e
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end
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print_stack
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end
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end
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def print_stack
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stack_size = @interpreter.stack.size
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@interpreter.stack.each_with_index do |elt, i|
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puts "#{stack_size - i}: #{elt}"
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end
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end
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end
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options = { run_REPL: ARGV.empty?,
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persistence_filename: File.expand_path( '~/.local/state/rpl.rb/machine' ),
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live_persistence: true,
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files: [],
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programs: [] }
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Version = '0.10.1'
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OptionParser.new do |opts|
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opts.on('-s', "--state filename", "persist state in filename (default: #{options[:persistence_filename]}) (will be created if needed)") do |filename|
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options[:persistence_filename] = File.expand_path( filename )
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end
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opts.on('-q', '--no-state', 'Do not load persisted state') do
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options[:persistence_filename] = nil
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end
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opts.on('-d', '--no-persist', 'Do not persist state') do
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options[:live_persistence] = false
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end
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opts.on('-c', '--code "program"', 'run provided "program"') do |program|
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options[:programs] << program
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end
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opts.on('-f', '--file program.rpl', 'load program.rpl') do |filename|
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options[:files] << filename
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end
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opts.on('-i', '--interactive', 'launch interactive REPL') do
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options[:run_REPL] = true
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end
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end.parse!
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# Instantiate interpreter
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interpreter = Rpl.new( persistence_filename: options[:persistence_filename],
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live_persistence: options[:live_persistence] )
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# first run provided files if any
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options[:files].each do |filename|
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interpreter.run "\"#{File.expand_path( filename )}\" feval"
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end
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# second run provided code if any
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options[:programs].each do |program|
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interpreter.run program
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end
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# third launch REPL if (explicitely or implicitely) asked
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if options[:run_REPL]
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RplRepl.new( interpreter: interpreter ).run
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else
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interpreter.persist_state
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end
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