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Mini Shell
#
# irb/context.rb - irb context
# $Release Version: 0.9.6$
# $Revision: 27117 $
# by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
# --
#
#
#
require "irb/workspace"
require "irb/inspector"
module IRB
class Context
#
# Arguments:
# input_method: nil -- stdin or readline
# String -- File
# other -- using this as InputMethod
#
def initialize(irb, workspace = nil, input_method = nil, output_method = nil)
@irb = irb
if workspace
@workspace = workspace
else
@workspace = WorkSpace.new
end
@thread = Thread.current if defined? Thread
# @irb_level = 0
# copy of default configuration
@ap_name = IRB.conf[:AP_NAME]
@rc = IRB.conf[:RC]
@load_modules = IRB.conf[:LOAD_MODULES]
@use_readline = IRB.conf[:USE_READLINE]
@verbose = IRB.conf[:VERBOSE]
@io = nil
self.inspect_mode = IRB.conf[:INSPECT_MODE]
self.math_mode = IRB.conf[:MATH_MODE] if IRB.conf[:MATH_MODE]
self.use_tracer = IRB.conf[:USE_TRACER] if IRB.conf[:USE_TRACER]
self.use_loader = IRB.conf[:USE_LOADER] if IRB.conf[:USE_LOADER]
self.eval_history = IRB.conf[:EVAL_HISTORY] if IRB.conf[:EVAL_HISTORY]
@ignore_sigint = IRB.conf[:IGNORE_SIGINT]
@ignore_eof = IRB.conf[:IGNORE_EOF]
@back_trace_limit = IRB.conf[:BACK_TRACE_LIMIT]
self.prompt_mode = IRB.conf[:PROMPT_MODE]
if IRB.conf[:SINGLE_IRB] or !defined?(JobManager)
@irb_name = IRB.conf[:IRB_NAME]
else
@irb_name = "irb#"+IRB.JobManager.n_jobs.to_s
end
@irb_path = "(" + @irb_name + ")"
case input_method
when nil
case use_readline?
when nil
if (defined?(ReadlineInputMethod) && STDIN.tty? &&
IRB.conf[:PROMPT_MODE] != :INF_RUBY)
@io = ReadlineInputMethod.new
else
@io = StdioInputMethod.new
end
when false
@io = StdioInputMethod.new
when true
if defined?(ReadlineInputMethod)
@io = ReadlineInputMethod.new
else
@io = StdioInputMethod.new
end
end
when String
@io = FileInputMethod.new(input_method)
@irb_name = File.basename(input_method)
@irb_path = input_method
else
@io = input_method
end
self.save_history = IRB.conf[:SAVE_HISTORY] if IRB.conf[:SAVE_HISTORY]
if output_method
@output_method = output_method
else
@output_method = StdioOutputMethod.new
end
@echo = IRB.conf[:ECHO]
if @echo.nil?
@echo = true
end
@debug_level = IRB.conf[:DEBUG_LEVEL]
end
def main
@workspace.main
end
attr_reader :workspace_home
attr_accessor :workspace
attr_reader :thread
attr_accessor :io
attr_accessor :irb
attr_accessor :ap_name
attr_accessor :rc
attr_accessor :load_modules
attr_accessor :irb_name
attr_accessor :irb_path
attr_reader :use_readline
attr_reader :inspect_mode
attr_reader :prompt_mode
attr_accessor :prompt_i
attr_accessor :prompt_s
attr_accessor :prompt_c
attr_accessor :prompt_n
attr_accessor :auto_indent_mode
attr_accessor :return_format
attr_accessor :ignore_sigint
attr_accessor :ignore_eof
attr_accessor :echo
attr_accessor :verbose
attr_reader :debug_level
attr_accessor :back_trace_limit
alias use_readline? use_readline
alias rc? rc
alias ignore_sigint? ignore_sigint
alias ignore_eof? ignore_eof
alias echo? echo
def verbose?
if @verbose.nil?
if defined?(ReadlineInputMethod) && @io.kind_of?(ReadlineInputMethod)
false
elsif !STDIN.tty? or @io.kind_of?(FileInputMethod)
true
else
false
end
else
@verbose
end
end
def prompting?
verbose? || (STDIN.tty? && @io.kind_of?(StdioInputMethod) ||
(defined?(ReadlineInputMethod) && @io.kind_of?(ReadlineInputMethod)))
end
attr_reader :last_value
def set_last_value(value)
@last_value = value
@workspace.evaluate self, "_ = IRB.CurrentContext.last_value"
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]
@prompt_n = pconf[:PROMPT_N]
@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? or @inspect_mode
end
def file_input?
@io.class == FileInputMethod
end
def inspect_mode=(opt)
if i = INSPECTORS[opt]
@inspect_mode = opt
@inspect_method = i
i.init
else
case opt
when nil
if INSPECTORS.keys_with_inspector(INSPECTORS[true]).include?(@inspect_mode)
self.inspect_mode = false
elsif INSPECTORS.keys_with_inspector(INSPECTORS[false]).include?(@inspect_mode)
self.inspect_mode = true
else
puts "Can't switch inspect mode."
return
end
when /^\s*\{.*\}\s*$/
begin
inspector = eval "proc#{opt}"
rescue Exception
puts "Can't switch inspect mode(#{opt})."
return
end
self.inspect_mode = inspector
when Proc
self.inspect_mode = IRB::Inspector(opt)
when Inspector
prefix = "usr%d"
i = 1
while INSPECTORS[format(prefix, i)]; i += 1; end
@inspect_mode = format(prefix, i)
@inspect_method = opt
INSPECTORS.def_inspector(format(prefix, i), @inspect_method)
else
puts "Can't switch inspect mode(#{opt})."
return
end
end
print "Switch to#{unless @inspect_mode; ' non';end} inspect mode.\n" if verbose?
@inspect_mode
end
def use_readline=(opt)
@use_readline = opt
print "use readline module\n" if @use_readline
end
def debug_level=(value)
@debug_level = value
RubyLex.debug_level = value
SLex.debug_level = value
end
def debug?
@debug_level > 0
end
def evaluate(line, line_no)
@line_no = line_no
set_last_value(@workspace.evaluate(self, line, irb_path, line_no))
# @workspace.evaluate("_ = IRB.conf[:MAIN_CONTEXT]._")
# @_ = @workspace.evaluate(line, irb_path, line_no)
end
def inspect_last_value
@inspect_method.inspect_value(@last_value)
end
alias __exit__ exit
def exit(ret = 0)
IRB.irb_exit(@irb, ret)
end
NOPRINTING_IVARS = ["@last_value"]
NO_INSPECTING_IVARS = ["@irb", "@io"]
IDNAME_IVARS = ["@prompt_mode"]
alias __inspect__ inspect
def inspect
array = []
for ivar in instance_variables.sort{|e1, e2| e1 <=> e2}
ivar = ivar.to_s
name = ivar.sub(/^@(.*)$/, '\1')
val = instance_eval(ivar)
case ivar
when *NOPRINTING_IVARS
array.push format("conf.%s=%s", name, "...")
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
end
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