module Prism

# File lib/prism/ffi.rb, line 203
def dump(code, **options)
  LibRubyParser::PrismString.with_string(code) { |string| dump_common(string, options) }
end

# File lib/prism/ffi.rb, line 208
def dump_file(filepath, **options)
  options[:filepath] = filepath
  LibRubyParser::PrismString.with_file(filepath) { |string| dump_common(string, options) }
end

# File lib/prism/ffi.rb, line 214
def lex(code, **options)
  LibRubyParser::PrismString.with_string(code) { |string| lex_common(string, code, options) }
end

# File lib/prism.rb, line 47
def self.lex_compat(source, **options)
  LexCompat.new(source, **options).result # steep:ignore
end

# File lib/prism/ffi.rb, line 219
def lex_file(filepath, **options)
  options[:filepath] = filepath
  LibRubyParser::PrismString.with_file(filepath) { |string| lex_common(string, string.read, options) }
end

# File lib/prism.rb, line 57
def self.lex_ripper(source)
  LexRipper.new(source).result # steep:ignore
end

# File lib/prism.rb, line 65
def self.load(source, serialized)
  Serialize.load(source, serialized)
end

# File lib/prism/ffi.rb, line 225
def parse(code, **options)
  LibRubyParser::PrismString.with_string(code) { |string| parse_common(string, code, options) }
end

# File lib/prism/ffi.rb, line 261
def parse_comments(code, **options)
  LibRubyParser::PrismString.with_string(code) { |string| parse_comments_common(string, code, options) }
end

# File lib/prism/ffi.rb, line 290
def parse_failure?(code, **options)
  !parse_success?(code, **options)
end

# File lib/prism/ffi.rb, line 232
def parse_file(filepath, **options)
  options[:filepath] = filepath
  LibRubyParser::PrismString.with_file(filepath) { |string| parse_common(string, string.read, options) }
end

# File lib/prism/ffi.rb, line 268
def parse_file_comments(filepath, **options)
  options[:filepath] = filepath
  LibRubyParser::PrismString.with_file(filepath) { |string| parse_comments_common(string, string.read, options) }
end

# File lib/prism/ffi.rb, line 301
def parse_file_failure?(filepath, **options)
  !parse_file_success?(filepath, **options)
end

# File lib/prism/ffi.rb, line 295
def parse_file_success?(filepath, **options)
  options[:filepath] = filepath
  LibRubyParser::PrismString.with_file(filepath) { |string| parse_file_success_common(string, options) }
end

# File lib/prism/ffi.rb, line 274
def parse_lex(code, **options)
  LibRubyParser::PrismString.with_string(code) { |string| parse_lex_common(string, code, options) }
end

# File lib/prism/ffi.rb, line 279
def parse_lex_file(filepath, **options)
  options[:filepath] = filepath
  LibRubyParser::PrismString.with_file(filepath) { |string| parse_lex_common(string, string.read, options) }
end

# File lib/prism/ffi.rb, line 238
def parse_stream(stream, **options)
  LibRubyParser::PrismBuffer.with do |buffer|
    source = +""
    callback = -> (string, size, _) {
      raise "Expected size to be >= 0, got: #{size}" if size <= 0

      if !(line = stream.gets(size - 1)).nil?
        source << line
        string.write_string("#{line}\x00", line.bytesize + 1)
      end
    }

    # In the pm_serialize_parse_stream function it accepts a pointer to the
    # IO object as a void* and then passes it through to the callback as the
    # third argument, but it never touches it itself. As such, since we have
    # access to the IO object already through the closure of the lambda, we
    # can pass a null pointer here and not worry.
    LibRubyParser.pm_serialize_parse_stream(buffer.pointer, nil, callback, dump_options(options))
    Prism.load(source, buffer.read)
  end
end

# File lib/prism/ffi.rb, line 285
def parse_success?(code, **options)
  LibRubyParser::PrismString.with_string(code) { |string| parse_file_success_common(string, options) }
end

# File lib/prism/ffi.rb, line 380
def dump_options(options)
  template = +""
  values = []

  template << "L"
  if (filepath = options[:filepath])
    values.push(filepath.bytesize, filepath.b)
    template << "A*"
  else
    values << 0
  end

  template << "l"
  values << options.fetch(:line, 1)

  template << "L"
  if (encoding = options[:encoding])
    name = encoding.name
    values.push(name.bytesize, name.b)
    template << "A*"
  else
    values << 0
  end

  template << "C"
  values << (options.fetch(:frozen_string_literal, false) ? 1 : 0)

  template << "C"
  values << dump_options_command_line(options)

  template << "C"
  values << { nil => 0, "3.3.0" => 1, "3.4.0" => 0, "latest" => 0 }.fetch(options[:version])

  template << "L"
  if (scopes = options[:scopes])
    values << scopes.length

    scopes.each do |scope|
      template << "L"
      values << scope.length

      scope.each do |local|
        name = local.name
        template << "L"
        values << name.bytesize

        template << "A*"
        values << name.b
      end
    end
  else
    values << 0
  end

  values.pack(template)
end

# File lib/prism/ffi.rb, line 362
def dump_options_command_line(options)
  command_line = options.fetch(:command_line, "")
  raise ArgumentError, "command_line must be a string" unless command_line.is_a?(String)

  command_line.each_char.inject(0) do |value, char|
    case char
    when "a" then value | 0b000001
    when "e" then value | 0b000010
    when "l" then value | 0b000100
    when "n" then value | 0b001000
    when "p" then value | 0b010000
    when "x" then value | 0b100000
    else raise ArgumentError, "invalid command_line option: #{char}"
    end
  end
end