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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@687 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
867 lines
18 KiB
Ruby
867 lines
18 KiB
Ruby
#
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# main.rb - irb main module
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# $Release Version: 0.6 $
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# $Revision$
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# $Date$
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# by Keiju ISHITSUKA(Nippon Rational Inc.)
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#
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# --
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#
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#
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#
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require "e2mmap"
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require "irb/ruby-lex"
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require "irb/input-method"
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require "irb/workspace-binding"
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STDOUT.sync = true
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module IRB
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@RCS_ID='-$Id$-'
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# exceptions
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extend Exception2MessageMapper
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def_exception :UnrecognizedSwitch, "Unrecognized switch: %s"
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def_exception :NotImplementError, "Need to define `%s'"
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def_exception :CantRetuenNormalMode, "Can't return normal mode."
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def_exception :IllegalParameter, "Illegal parameter(%s)."
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def_exception :IrbAlreadyDead, "Irb is already dead."
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def_exception :IrbSwitchToCurrentThread, "Change to current thread."
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def_exception :NoSuchJob, "No such job(%s)."
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def_exception :CanNotGoMultiIrbMode, "Can't go multi irb mode."
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def_exception :CanNotChangeBinding, "Can't change binding to (%s)."
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def_exception :UndefinedPromptMode, "Undefined prompt mode(%s)."
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class Abort < Exception;end
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# initialize IRB and start TOP_LEVEL irb
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def IRB.start(ap_path = nil)
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$0 = File::basename(ap_path, ".rb") if ap_path
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IRB.initialize(ap_path)
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IRB.parse_opts
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IRB.load_modules
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bind = workspace_binding
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main = eval("self", bind)
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if @CONF[:SCRIPT]
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irb = Irb.new(main, bind, @CONF[:SCRIPT])
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else
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irb = Irb.new(main, bind)
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end
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@CONF[:IRB_RC].call(irb.context) if @CONF[:IRB_RC]
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@CONF[:MAIN_CONTEXT] = irb.context
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trap("SIGINT") do
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irb.signal_handle
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end
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catch(:IRB_EXIT) do
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irb.eval_input
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end
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print "\n"
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end
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# initialize config
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def IRB.initialize(ap_path)
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IRB.init_config(ap_path)
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IRB.run_config
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end
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#
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# @CONF functions
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#
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@CONF = {}
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# @CONF default setting
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def IRB.init_config(ap_path)
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# class instance variables
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@TRACER_INITIALIZED = false
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@MATHN_INITIALIZED = false
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# default configurations
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unless ap_path and @CONF[:AP_NAME]
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ap_path = File.join(File.dirname(File.dirname(__FILE__)), "irb.rb")
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end
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@CONF[:AP_NAME] = File::basename(ap_path, ".rb")
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@CONF[:IRB_NAME] = "irb"
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@CONF[:IRB_LIB_PATH] = File.dirname(__FILE__)
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@CONF[:RC] = true
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@CONF[:LOAD_MODULES] = []
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@CONF[:IRB_RC] = nil
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@CONF[:MATH_MODE] = false
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@CONF[:USE_READLINE] = false unless defined?(ReadlineInputMethod)
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@CONF[:INSPECT_MODE] = nil
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@CONF[:USE_TRACER] = false
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@CONF[:USE_LOADER] = false
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@CONF[:IGNORE_SIGINT] = true
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@CONF[:IGNORE_EOF] = false
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@CONF[:BACK_TRACE_LIMIT] = 16
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@CONF[:PROMPT] = {
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:NULL => {
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:PROMPT_I => nil,
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:PROMPT_S => nil,
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:PROMPT_C => nil,
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:RETURN => "%s\n"
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},
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:DEFAULT => {
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:PROMPT_I => "%N(%m):%03n:%i> ",
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:PROMPT_S => "%N(%m):%03n:%i%l ",
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:PROMPT_C => "%N(%m):%03n:%i* ",
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:RETURN => "%s\n"
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},
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:SIMPLE => {
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:PROMPT_I => ">> ",
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:PROMPT_S => nil,
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:PROMPT_C => "?> ",
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:RETURN => "=> %s\n"
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},
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:INF_RUBY => {
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:PROMPT_I => "%N(%m):%03n:%i> ",
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:PROMPT_S => nil,
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:PROMPT_C => nil,
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:RETURN => "%s\n",
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:AUTO_INDENT => true
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},
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:XMP => {
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:PROMPT_I => nil,
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:PROMPT_S => nil,
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:PROMPT_C => nil,
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:RETURN => " ==>%s\n"
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}
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}
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@CONF[:PROMPT_MODE] = :DEFAULT
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@CONF[:AUTO_INDENT] = false
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@CONF[:CONTEXT_MODE] = 3
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@CONF[:SINGLE_IRB] = false
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@CONF[:DEBUG_LEVEL] = 1
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@CONF[:VERBOSE] = true
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end
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# IRB version method
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def IRB.version
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if v = @CONF[:VERSION] then return v end
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require "irb/version"
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rv = @RELEASE_VERSION.sub(/\.0/, "")
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@CONF[:VERSION] = format("irb %s(%s)", rv, @LAST_UPDATE_DATE)
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end
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def IRB.conf
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@CONF
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end
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# option analyzing
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def IRB.parse_opts
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while opt = ARGV.shift
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case opt
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when "-f"
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opt = ARGV.shift
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@CONF[:RC] = false
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when "-m"
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@CONF[:MATH_MODE] = true
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when "-d"
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$DEBUG = true
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when "-r"
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opt = ARGV.shift
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@CONF[:LOAD_MODULES].push opt if opt
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when "--inspect"
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@CONF[:INSPECT_MODE] = true
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when "--noinspect"
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@CONF[:INSPECT_MODE] = false
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when "--readline"
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@CONF[:USE_READLINE] = true
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when "--noreadline"
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@CONF[:USE_READLINE] = false
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when "--prompt-mode", "--prompt"
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prompt_mode = ARGV.shift.upcase.tr("-", "_").intern
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IRB.fail(UndefinedPromptMode,
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prompt_mode.id2name) unless @CONF[:PROMPT][prompt_mode]
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@CONF[:PROMPT_MODE] = prompt_mode
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when "--noprompt"
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@CONF[:PROMPT_MODE] = :NULL
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when "--inf-ruby-mode"
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@CONF[:PROMPT_MODE] = :INF_RUBY
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when "--sample-book-mode", "--simple-prompt"
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@CONF[:PROMPT_MODE] = :SIMPLE
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when "--tracer"
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@CONF[:USE_TRACER] = true
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when "--back-trace-limit"
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@CONF[:BACK_TRACE_LIMIT] = ARGV.shift.to_i
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when "--context-mode"
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@CONF[:CONTEXT_MODE] = ARGV.shift.to_i
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when "--single-irb"
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@CONF[:SINGLE_IRB] = true
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when "--irb_debug"
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@CONF[:DEBUG_LEVEL] = ARGV.shift.to_i
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when "-v", "--version"
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print IRB.version, "\n"
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exit(0)
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when /^-/
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IRB.fail UnrecognizedSwitch, opt
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else
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@CONF[:USE_READLINE] = false
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@CONF[:SCRIPT] = opt
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$0 = opt
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break
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end
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end
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end
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# running config
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def IRB.run_config
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if @CONF[:RC]
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rcs = []
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rcs.push File.expand_path("~/.irbrc") if ENV.key?("HOME")
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rcs.push ".irbrc"
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rcs.push "irb.rc"
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rcs.push "_irbrc"
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rcs.push "$irbrc"
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catch(:EXIT) do
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for rc in rcs
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begin
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load rc
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throw :EXIT
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rescue LoadError, Errno::ENOENT
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rescue
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print "load error: #{rc}\n"
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print $!.type, ": ", $!, "\n"
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for err in $@[0, $@.size - 2]
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print "\t", err, "\n"
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end
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throw :EXIT
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end
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end
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end
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end
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end
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# loading modules
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def IRB.load_modules
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for m in @CONF[:LOAD_MODULES]
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begin
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require m
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rescue
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print $@[0], ":", $!.type, ": ", $!, "\n"
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end
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end
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end
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# initialize tracing function
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def IRB.initialize_tracer
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unless @TRACER_INITIALIZED
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require("tracer")
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Tracer.verbose = false
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Tracer.add_filter {
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|event, file, line, id, binding|
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File::dirname(file) != @CONF[:IRB_LIB_PATH]
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}
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@TRACER_INITIALIZED = true
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end
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end
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# initialize mathn function
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def IRB.initialize_mathn
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unless @MATHN_INITIALIZED
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require "mathn"
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@MATHN_INITIALIZED = true
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end
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end
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# initialize loader function
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def IRB.initialize_loader
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unless @LOADER_INITIALIZED
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require "irb/loader"
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@LOADER_INITIALIZED = true
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end
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end
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def IRB.irb_exit(irb, ret)
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throw :IRB_EXIT, ret
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end
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def IRB.irb_abort(irb, exception = Abort)
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if defined? Thread
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irb.context.thread.raise exception, "abort then interrupt!!"
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else
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raise exception, "abort then interrupt!!"
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end
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end
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#
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# irb interpriter main routine
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#
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class Irb
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def initialize(main, bind, input_method = nil)
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@context = Context.new(self, main, bind, input_method)
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main.extend ExtendCommand
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@signal_status = :IN_IRB
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@scanner = RubyLex.new
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@scanner.exception_on_syntax_error = false
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end
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attr :context
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attr :scanner, true
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def eval_input
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# @scanner = RubyLex.new
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@scanner.set_input(@context.io) do
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signal_status(:IN_INPUT) do
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unless l = @context.io.gets
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if @context.ignore_eof? and @context.io.readable_atfer_eof?
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l = "\n"
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if @context.verbose?
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printf "Use \"exit\" to leave %s\n", @context.ap_name
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end
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end
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end
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l
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end
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end
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@scanner.set_prompt do
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|ltype, indent, continue, line_no|
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if ltype
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f = @context.prompt_s
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elsif continue
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f = @context.prompt_c
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else @context.prompt_i
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f = @context.prompt_i
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end
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f = "" unless f
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@context.io.prompt = p = prompt(f, ltype, indent, line_no)
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if @context.auto_indent_mode
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unless ltype
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ind = prompt(@context.prompt_i, ltype, indent, line_no).size +
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indent * 2 - p.size
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ind += 2 if continue
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@context.io.prompt = p + " " * ind if ind > 0
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end
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end
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end
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@scanner.each_top_level_statement do
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|line, line_no|
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signal_status(:IN_EVAL) do
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begin
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trace_in do
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@context._ = eval(line, @context.bind, @context.irb_path, line_no)
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# @context._ = irb_eval(line, @context.bind, @context.irb_path, line_no)
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end
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if @context.inspect?
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printf @context.return_format, @context._.inspect
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else
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printf @context.return_format, @context._
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end
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rescue StandardError, ScriptError, Abort
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$! = RuntimeError.new("unknown exception raised") unless $!
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print $!.type, ": ", $!, "\n"
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if $@[0] =~ /irb(2)?(\/.*|-.*|\.rb)?:/ && $!.type.to_s !~ /^IRB/
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irb_bug = true
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else
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irb_bug = false
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end
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messages = []
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lasts = []
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levels = 0
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for m in $@
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if m !~ /irb2?(\/.*|-.*|\.rb)?:/ or irb_bug
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if messages.size < @context.back_trace_limit
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messages.push m
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else
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lasts.push m
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if lasts.size > @context.back_trace_limit
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lasts.shift
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levels += 1
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end
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end
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end
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end
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print messages.join("\n"), "\n"
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unless lasts.empty?
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printf "... %d levels...\n", levels if levels > 0
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print lasts.join("\n")
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end
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print "Maybe IRB bug!!\n" if irb_bug
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end
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end
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end
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end
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# def irb_eval(line, bind, path, line_no)
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# id, str = catch(:IRB_TOPLEVEL_EVAL){
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# return eval(line, bind, path, line_no)
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# }
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# case id
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# when :EVAL_TOPLEVEL
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# eval(str, bind, "(irb_internal)", 1)
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# when :EVAL_CONTEXT
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# @context.instance_eval(str)
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# else
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# IRB.fail IllegalParameter
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# end
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# end
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def signal_handle
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unless @context.ignore_sigint?
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print "\nabort!!\n" if @context.verbose?
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exit
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end
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case @signal_status
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when :IN_INPUT
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print "^C\n"
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@scanner.initialize_input
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print @context.io.prompt
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when :IN_EVAL
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IRB.irb_abort(self)
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when :IN_LOAD
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IRB.irb_abort(self, LoadAbort)
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when :IN_IRB
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# ignore
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else
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# ignore
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end
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end
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def signal_status(status)
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return yield if @signal_status == :IN_LOAD
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signal_status_back = @signal_status
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@signal_status = status
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begin
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yield
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ensure
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@signal_status = signal_status_back
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end
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end
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def trace_in
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Tracer.on if @context.use_tracer?
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begin
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yield
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ensure
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Tracer.off if @context.use_tracer?
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end
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end
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def prompt(prompt, ltype, indent, line_no)
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p = prompt.dup
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p.gsub!(/%([0-9]+)?([a-zA-Z])/) do
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case $2
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when "N"
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@context.irb_name
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when "m"
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@context.main.to_s
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when "M"
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@context.main.inspect
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when "l"
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ltype
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when "i"
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if $1
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format("%" + $1 + "d", indent)
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else
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indent.to_s
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end
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when "n"
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if $1
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format("%" + $1 + "d", line_no)
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else
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line_no.to_s
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end
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when "%"
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"%"
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end
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end
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p
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end
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def inspect
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ary = []
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for iv in instance_variables
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case iv
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when "@signal_status"
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ary.push format("%s=:%s", iv, @signal_status.id2name)
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when "@context"
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ary.push format("%s=%s", iv, eval(iv).__to_s__)
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else
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ary.push format("%s=%s", iv, eval(iv))
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end
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end
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format("#<%s: %s>", type, ary.join(", "))
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end
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end
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#
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# irb context
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#
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class Context
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#
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# Arguments:
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# input_method: nil -- stdin or readline
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# String -- File
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# other -- using this as InputMethod
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#
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def initialize(irb, main, bind, input_method = nil)
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@irb = irb
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@main = main
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@bind = bind
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@thread = Thread.current if defined? Thread
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@irb_level = 0
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# copy of default configuration
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@ap_name = IRB.conf[:AP_NAME]
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@rc = IRB.conf[:RC]
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@load_modules = IRB.conf[:LOAD_MODULES]
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self.math_mode = IRB.conf[:MATH_MODE]
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@use_readline = IRB.conf[:USE_READLINE]
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@inspect_mode = IRB.conf[:INSPECT_MODE]
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@use_tracer = IRB.conf[:USE_TRACER]
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# @use_loader = IRB.conf[:USE_LOADER]
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self.prompt_mode = IRB.conf[:PROMPT_MODE]
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@ignore_sigint = IRB.conf[:IGNORE_SIGINT]
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@ignore_eof = IRB.conf[:IGNORE_EOF]
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@back_trace_limit = IRB.conf[:BACK_TRACE_LIMIT]
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debug_level = IRB.conf[:DEBUG_LEVEL]
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@verbose = IRB.conf[:VERBOSE]
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@tracer_initialized = false
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if IRB.conf[:SINGLE_IRB] or !defined?(JobManager)
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@irb_name = IRB.conf[:IRB_NAME]
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else
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@irb_name = "irb#"+IRB.JobManager.n_jobs.to_s
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end
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@irb_path = "(" + @irb_name + ")"
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case input_method
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when nil
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if (use_readline.nil? && IRB.conf[:PROMPT_MODE] != :INF_RUBY ||
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|
use_readline?)
|
|
@io = ReadlineInputMethod.new
|
|
else
|
|
@io = StdioInputMethod.new
|
|
end
|
|
when String
|
|
@io = FileInputMethod.new(input_method)
|
|
@irb_name = File.basename(input_method)
|
|
@irb_path = input_method
|
|
else
|
|
@io = input_method
|
|
end
|
|
end
|
|
|
|
attr :bind, true
|
|
attr :main, true
|
|
attr :thread
|
|
attr :io, true
|
|
|
|
attr :_
|
|
|
|
attr :irb
|
|
attr :ap_name
|
|
attr :rc
|
|
attr :load_modules
|
|
attr :irb_name
|
|
attr :irb_path
|
|
|
|
attr :math_mode, true
|
|
attr :use_readline, true
|
|
attr :inspect_mode
|
|
attr :use_tracer
|
|
# attr :use_loader
|
|
|
|
attr :debug_level
|
|
attr :verbose, true
|
|
|
|
attr :prompt_mode
|
|
attr :prompt_i, true
|
|
attr :prompt_s, true
|
|
attr :prompt_c, true
|
|
attr :auto_indent_mode, true
|
|
attr :return_format, true
|
|
|
|
attr :ignore_sigint, true
|
|
attr :ignore_eof, true
|
|
|
|
attr :back_trace_limit
|
|
|
|
# alias use_loader? use_loader
|
|
alias use_tracer? use_tracer
|
|
alias use_readline? use_readline
|
|
alias rc? rc
|
|
alias math? math_mode
|
|
alias verbose? verbose
|
|
alias ignore_sigint? ignore_sigint
|
|
alias ignore_eof? ignore_eof
|
|
|
|
def _=(value)
|
|
@_ = value
|
|
eval "_ = IRB.conf[:MAIN_CONTEXT]._", @bind
|
|
end
|
|
|
|
def irb_name
|
|
if @irb_level == 0
|
|
@irb_name
|
|
elsif @irb_name =~ /#[0-9]*$/
|
|
@irb_name + "." + @irb_level.to_s
|
|
else
|
|
@irb_name + "#0." + @irb_level.to_s
|
|
end
|
|
end
|
|
|
|
def prompt_mode=(mode)
|
|
@prompt_mode = mode
|
|
pconf = IRB.conf[:PROMPT][mode]
|
|
@prompt_i = pconf[:PROMPT_I]
|
|
@prompt_s = pconf[:PROMPT_S]
|
|
@prompt_c = pconf[:PROMPT_C]
|
|
@return_format = pconf[:RETURN]
|
|
if ai = pconf.include?(:AUTO_INDENT)
|
|
@auto_indent_mode = ai
|
|
else
|
|
@auto_indent_mode = IRB.conf[:AUTO_INDENT]
|
|
end
|
|
end
|
|
|
|
def inspect?
|
|
@inspect_mode.nil? && !@math_mode or @inspect_mode
|
|
end
|
|
|
|
def file_input?
|
|
@io.type == FileInputMethod
|
|
end
|
|
|
|
def use_tracer=(opt)
|
|
if opt
|
|
IRB.initialize_tracer
|
|
unless @tracer_initialized
|
|
Tracer.set_get_line_procs(@irb_path) {
|
|
|line_no|
|
|
@io.line(line_no)
|
|
}
|
|
@tracer_initialized = true
|
|
end
|
|
elsif !opt && @use_tracer
|
|
Tracer.off
|
|
end
|
|
@use_tracer=opt
|
|
end
|
|
|
|
def use_loader
|
|
IRB.conf[:USE_LOADER]
|
|
end
|
|
|
|
def use_loader=(opt)
|
|
IRB.conf[:USE_LOADER] = opt
|
|
if opt
|
|
IRB.initialize_loader
|
|
end
|
|
print "Switch to load/require#{unless use_loader; ' non';end} trace mode.\n" if verbose?
|
|
opt
|
|
end
|
|
|
|
def inspect_mode=(opt)
|
|
if opt
|
|
@inspect_mode = opt
|
|
else
|
|
@inspect_mode = !@inspect_mode
|
|
end
|
|
print "Switch to#{unless @inspect_mode; ' non';end} inspect mode.\n" if verbose?
|
|
@inspect_mode
|
|
end
|
|
|
|
def math_mode=(opt)
|
|
if @math_mode == true && opt == false
|
|
IRB.fail CantRetuenNormalMode
|
|
return
|
|
end
|
|
|
|
@math_mode = opt
|
|
if math_mode
|
|
IRB.initialize_mathn
|
|
@main.instance_eval("include Math")
|
|
print "start math mode\n" if verbose?
|
|
end
|
|
end
|
|
|
|
def use_readline=(opt)
|
|
@use_readline = opt
|
|
print "use readline module\n" if @use_readline
|
|
end
|
|
|
|
def debug_level=(value)
|
|
@debug_level = value
|
|
RubyLex.debug_level = value
|
|
SLex.debug_level = value
|
|
end
|
|
|
|
def debug?
|
|
@debug_level > 0
|
|
end
|
|
|
|
def change_binding(*main)
|
|
back = [@bind, @main]
|
|
@bind = IRB.workspace_binding(*main)
|
|
unless main.empty?
|
|
@main = eval("self", @bind)
|
|
begin
|
|
@main.extend ExtendCommand
|
|
rescue
|
|
print "can't change binding to: ", @main.inspect, "\n"
|
|
@bind, @main = back
|
|
return nil
|
|
end
|
|
end
|
|
@irb_level += 1
|
|
begin
|
|
catch(:SU_EXIT) do
|
|
@irb.eval_input
|
|
end
|
|
ensure
|
|
@irb_level -= 1
|
|
@bind, @main = back
|
|
end
|
|
end
|
|
|
|
alias __exit__ exit
|
|
def exit(ret = 0)
|
|
if @irb_level == 0
|
|
IRB.irb_exit(@irb, ret)
|
|
else
|
|
throw :SU_EXIT, ret
|
|
end
|
|
end
|
|
|
|
NOPRINTING_IVARS = ["@_"]
|
|
NO_INSPECTING_IVARS = ["@irb", "@io"]
|
|
IDNAME_IVARS = ["@prompt_mode"]
|
|
|
|
alias __inspect__ inspect
|
|
def inspect
|
|
array = []
|
|
for ivar in instance_variables.sort{|e1, e2| e1 <=> e2}
|
|
name = ivar.sub(/^@(.*)$/){$1}
|
|
val = instance_eval(ivar)
|
|
case ivar
|
|
when *NOPRINTING_IVARS
|
|
next
|
|
when *NO_INSPECTING_IVARS
|
|
array.push format("conf.%s=%s", name, val.to_s)
|
|
when *IDNAME_IVARS
|
|
array.push format("conf.%s=:%s", name, val.id2name)
|
|
else
|
|
array.push format("conf.%s=%s", name, val.inspect)
|
|
end
|
|
end
|
|
array.join("\n")
|
|
end
|
|
alias __to_s__ to_s
|
|
alias to_s inspect
|
|
|
|
end
|
|
|
|
#
|
|
# IRB extended command
|
|
#
|
|
module Loader; end
|
|
module ExtendCommand
|
|
include Loader
|
|
|
|
alias irb_exit_org exit
|
|
def irb_exit(ret = 0)
|
|
irb_context.exit(ret)
|
|
end
|
|
alias exit irb_exit
|
|
alias quit irb_exit
|
|
|
|
alias irb_fork fork
|
|
def fork(&block)
|
|
unless irb_fork
|
|
eval "alias exit irb_exit_org"
|
|
instance_eval "alias exit irb_exit_org"
|
|
if iterator?
|
|
yield
|
|
exit
|
|
end
|
|
end
|
|
end
|
|
|
|
def irb_change_binding(*main)
|
|
irb_context.change_binding(*main)
|
|
end
|
|
alias cb irb_change_binding
|
|
|
|
def irb_source(file)
|
|
irb_context.source(file)
|
|
end
|
|
alias source irb_source
|
|
|
|
def irb(*obj)
|
|
require "irb/multi-irb"
|
|
IRB.irb(nil, *obj)
|
|
end
|
|
|
|
def irb_context
|
|
IRB.conf[:MAIN_CONTEXT]
|
|
end
|
|
alias conf irb_context
|
|
|
|
def irb_jobs
|
|
require "irb/multi-irb"
|
|
IRB.JobManager
|
|
end
|
|
alias jobs irb_jobs
|
|
|
|
def irb_fg(key)
|
|
require "irb/multi-irb"
|
|
IRB.JobManager.switch(key)
|
|
end
|
|
alias fg irb_fg
|
|
|
|
def irb_kill(*keys)
|
|
require "irb/multi-irb"
|
|
IRB.JobManager.kill(*keys)
|
|
end
|
|
alias kill irb_kill
|
|
end
|
|
|
|
# Singleton method
|
|
def @CONF.inspect
|
|
IRB.version unless self[:VERSION]
|
|
|
|
array = []
|
|
for k, v in sort{|a1, a2| a1[0].id2name <=> a2[0].id2name}
|
|
case k
|
|
when :MAIN_CONTEXT
|
|
next
|
|
when :PROMPT
|
|
s = v.collect{
|
|
|kk, vv|
|
|
ss = vv.collect{|kkk, vvv| ":#{kkk.id2name}=>#{vvv.inspect}"}
|
|
format(":%s=>{%s}", kk.id2name, ss.join(", "))
|
|
}
|
|
array.push format("CONF[:%s]={%s}", k.id2name, s.join(", "))
|
|
else
|
|
array.push format("CONF[:%s]=%s", k.id2name, v.inspect)
|
|
end
|
|
end
|
|
array.join("\n")
|
|
end
|
|
end
|