Class: Opal::CLI

Inherits:
Object
  • Object
show all
Defined in:
lib/opal/cli.rb

Defined Under Namespace

Classes: Evals

Class Attribute Summary collapse

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = nil) ⇒ CLI

Returns a new instance of CLI.

Raises:

  • (ArgumentError) 


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# File 'lib/opal/cli.rb', line 25

def initialize(options = nil)
  options ||= {}

  # Runner
  @runner_type    = options.delete(:runner)         || :nodejs
  @runner_options = options.delete(:runner_options) || {}

  @options     = options
  @sexp        = options.delete(:sexp)
  @repl        = options.delete(:repl)
  @no_exit     = options.delete(:no_exit)
  @lib_only    = options.delete(:lib_only)
  @argv        = options.delete(:argv)       { [] }
  @evals       = options.delete(:evals)      { [] }
  @load_paths  = options.delete(:load_paths) { [] }
  @gems        = options.delete(:gems)       { [] }
  @stubs       = options.delete(:stubs)      { [] }
  @preload     = options.delete(:preload)    { [] }
  @output      = options.delete(:output)     { self.class.stdout || $stdout }
  @verbose     = options.delete(:verbose)    { false }
  @debug       = options.delete(:debug)      { false }
  @requires    = options.delete(:requires)   { [] }
  @rbrequires  = options.delete(:rbrequires) { [] }
  @no_cache    = options.delete(:no_cache)   { false }
  @stdin       = options.delete(:stdin)      { $stdin }

  @debug_source_map = options.delete(:debug_source_map) { false }

  @missing_require_severity = options.delete(:missing_require_severity) { Opal::Config.missing_require_severity }

  @requires.unshift('opal') unless options.delete(:skip_opal_require)

  @compiler_options = compiler_option_names.map do |option|
    key = option.to_sym
    next unless options.key? key
    value = options.delete(key)
    [key, value]
  end.compact.to_h

  if @lib_only
    raise ArgumentError, 'no libraries to compile' if @requires.empty?
    raise ArgumentError, "can't accept evals, file, or extra arguments in `library only` mode" if @argv.any? || @evals.any?
  elsif @evals.any?
    @filename = '-e'
    @file = Evals.new(@evals.join("\n"))
  elsif @argv.first && @argv.first != '-'
    @filename = @argv.shift
    @file = File.open(@filename)
  else
    @filename = @argv.shift || '-'
    @file = @stdin
  end

  raise ArgumentError, "unknown options: #{options.inspect}" unless @options.empty?
end

Class Attribute Details

.stdout ⇒ Object

Returns the value of attribute stdout.



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# File 'lib/opal/cli.rb', line 16

def stdout
  @stdout
end

Instance Attribute Details

#argv ⇒ Object (readonly)

Returns the value of attribute argv.



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# File 'lib/opal/cli.rb', line 10

def argv
  @argv
end

#compiler_options ⇒ Object (readonly)

Returns the value of attribute compiler_options.



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# File 'lib/opal/cli.rb', line 10

def compiler_options
  @compiler_options
end

#debug ⇒ Object (readonly)

Returns the value of attribute debug.



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# File 'lib/opal/cli.rb', line 10

def debug
  @debug
end

#evals ⇒ Object (readonly)

Returns the value of attribute evals.



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# File 'lib/opal/cli.rb', line 10

def evals
  @evals
end

#exit_status ⇒ Object (readonly)

Returns the value of attribute exit_status.



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# File 'lib/opal/cli.rb', line 116

def exit_status
  @exit_status
end

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/opal/cli.rb', line 10

def file
  @file
end

#filename ⇒ Object (readonly)

Returns the value of attribute filename.



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# File 'lib/opal/cli.rb', line 10

def filename
  @filename
end

#gems ⇒ Object (readonly)

Returns the value of attribute gems.



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# File 'lib/opal/cli.rb', line 10

def gems
  @gems
end

#lib_only ⇒ Object (readonly)

Returns the value of attribute lib_only.



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# File 'lib/opal/cli.rb', line 10

def lib_only
  @lib_only
end

#load_paths ⇒ Object (readonly)

Returns the value of attribute load_paths.



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# File 'lib/opal/cli.rb', line 10

def load_paths
  @load_paths
end

#missing_require_severity ⇒ Object (readonly)

Returns the value of attribute missing_require_severity.



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# File 'lib/opal/cli.rb', line 10

def missing_require_severity
  @missing_require_severity
end

#no_cache ⇒ Object (readonly)

Returns the value of attribute no_cache.



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# File 'lib/opal/cli.rb', line 10

def no_cache
  @no_cache
end

#no_exit ⇒ Object (readonly)

Returns the value of attribute no_exit.



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# File 'lib/opal/cli.rb', line 10

def no_exit
  @no_exit
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/opal/cli.rb', line 10

def options
  @options
end

#output ⇒ Object (readonly)

Returns the value of attribute output.



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# File 'lib/opal/cli.rb', line 10

def output
  @output
end

#preload ⇒ Object (readonly)

Returns the value of attribute preload.



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# File 'lib/opal/cli.rb', line 10

def preload
  @preload
end

#rbrequires ⇒ Object (readonly)

Returns the value of attribute rbrequires.



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# File 'lib/opal/cli.rb', line 10

def rbrequires
  @rbrequires
end

#requires ⇒ Object (readonly)

Returns the value of attribute requires.



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# File 'lib/opal/cli.rb', line 10

def requires
  @requires
end

#runner_options ⇒ Object (readonly)

Returns the value of attribute runner_options.



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# File 'lib/opal/cli.rb', line 10

def runner_options
  @runner_options
end

#stdin ⇒ Object (readonly)

Returns the value of attribute stdin.



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# File 'lib/opal/cli.rb', line 10

def stdin
  @stdin
end

#stubs ⇒ Object (readonly)

Returns the value of attribute stubs.



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# File 'lib/opal/cli.rb', line 10

def stubs
  @stubs
end

#verbose ⇒ Object (readonly)

Returns the value of attribute verbose.



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# File 'lib/opal/cli.rb', line 10

def verbose
  @verbose
end

Instance Method Details

#compiler_option_names ⇒ Object 



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# File 'lib/opal/cli.rb', line 181

def compiler_option_names
  %w[
    method_missing
    arity_check
    dynamic_require_severity
    source_map_enabled
    irb_enabled
    inline_operators
    enable_source_location
    enable_file_source_embed
    use_strict
    parse_comments
    esm
  ]
end

#create_builder ⇒ Object 



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# File 'lib/opal/cli.rb', line 118

def create_builder
  builder = Opal::Builder.new(
    stubs: stubs,
    compiler_options: compiler_options,
    missing_require_severity: missing_require_severity,
  )

  # --no-cache
  builder.cache = Opal::Cache::NullCache.new if no_cache

  # --include
  builder.append_paths(*load_paths)

  # --gem
  gems.each { |gem_name| builder.use_gem gem_name }

  # --require
  requires.each { |required| builder.build(required, requirable: true, load: true) }

  # --preload
  preload.each { |path| builder.build_require(path) }

  # --verbose
  builder.build_str '$VERBOSE = true', '(flags)', no_export: true if verbose

  # --debug
  builder.build_str '$DEBUG = true', '(flags)', no_export: true if debug

  # --eval / stdin / file
  source = evals_or_file_source
  builder.build_str(source, filename) if source

  # --no-exit
  builder.build_str '::Kernel.exit', '(exit)', no_export: true unless no_exit

  builder
end

#debug_source_map ⇒ Object 



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# File 'lib/opal/cli.rb', line 165

def debug_source_map
  source = evals_or_file_source or return # rubocop:disable Style/AndOr

  compiler = Opal::Compiler.new(source, file: filename, **compiler_options)

  compiler.compile

  b64 = [
    compiler.result,
    compiler.source_map.to_json,
    evals_or_file_source,
  ].map { |i| Base64.strict_encode64(i) }.join(',')

  output.puts "https://sokra.github.io/source-map-visualization/#base64,#{b64}"
end

#evals_or_file_source ⇒ Object

Internal: Yields a string of source code and the proper filename for either evals, stdin or a filepath.



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# File 'lib/opal/cli.rb', line 199

def evals_or_file_source
  return if lib_only # --library
  return @cached_content if @cached_content

  unless file.tty?
    begin
      file.rewind
      can_read_again = true
    rescue Errno::ESPIPE # rubocop:disable Lint/HandleExceptions
      # noop
    end
  end

  if @cached_content.nil? || can_read_again
    # On MacOS file.read is not enough to pick up changes, probably due to some
    # cache or buffer, unclear if coming from ruby or the OS.
    content = File.file?(file) ? File.read(file) : file.read
  end

  @cached_content ||= content unless can_read_again
  content
end

#run ⇒ Object 



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# File 'lib/opal/cli.rb', line 81

def run
  return show_sexp if @sexp
  return debug_source_map if @debug_source_map
  return run_repl if @repl

  rbrequires.each { |file| require file }

  runner = self.runner

  # Some runners may need to use a dynamic builder, that is,
  # a builder that will try to build the entire package every time
  # a page is loaded - for example a Server runner that needs to
  # rerun if files are changed.
  builder = proc { create_builder }

  @exit_status = runner.call(
    options: runner_options,
    output: output,
    argv: argv,
    builder: builder,
  )
end

#run_repl ⇒ Object 



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# File 'lib/opal/cli.rb', line 109

def run_repl
  require 'opal/repl'

  repl = REPL.new
  repl.run(argv)
end

#runner ⇒ Object 



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# File 'lib/opal/cli.rb', line 104

def runner
  CliRunners[@runner_type] ||
    raise(ArgumentError, "unknown runner: #{@runner_type.inspect}")
end

#show_sexp ⇒ Object 



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# File 'lib/opal/cli.rb', line 156

def show_sexp
  source = evals_or_file_source or return # rubocop:disable Style/AndOr

  buffer = ::Opal::Parser::SourceBuffer.new(filename)
  buffer.source = source
  sexp = Opal::Parser.default_parser.parse(buffer)
  output.puts sexp.inspect
end