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# frozen_string_literal: true
#
# loader.rb -
# by Keiju ISHITSUKA(keiju@ruby-lang.org)
#
module IRB # :nodoc:
# Raised in the event of an exception in a file loaded from an Irb session
class LoadAbort < Exception;end
# Provides a few commands for loading files within an irb session.
#
# See ExtendCommandBundle for more information.
module IrbLoader
alias ruby_load load
alias ruby_require require
# Loads the given file similarly to Kernel#load
def irb_load(fn, priv = nil)
path = search_file_from_ruby_path(fn)
raise LoadError, "No such file to load -- #{fn}" unless path
load_file(path, priv)
end
def search_file_from_ruby_path(fn) # :nodoc:
if File.absolute_path?(fn)
return fn if File.exist?(fn)
return nil
end
for path in $:
if File.exist?(f = File.join(path, fn))
return f
end
end
return nil
end
# Loads a given file in the current session and displays the source lines
#
# See Irb#suspend_input_method for more information.
def source_file(path)
irb = irb_context.irb
irb.suspend_name(path, File.basename(path)) do
FileInputMethod.open(path) do |io|
irb.suspend_input_method(io) do
|back_io|
irb.signal_status(:IN_LOAD) do
if back_io.kind_of?(FileInputMethod)
irb.eval_input
else
begin
irb.eval_input
rescue LoadAbort
print "load abort!!\n"
end
end
end
end
end
end
end
# Loads the given file in the current session's context and evaluates it.
#
# See Irb#suspend_input_method for more information.
def load_file(path, priv = nil)
irb = irb_context.irb
irb.suspend_name(path, File.basename(path)) do
if priv
ws = WorkSpace.new(Module.new)
else
ws = WorkSpace.new
end
irb.suspend_workspace(ws) do
FileInputMethod.open(path) do |io|
irb.suspend_input_method(io) do
|back_io|
irb.signal_status(:IN_LOAD) do
if back_io.kind_of?(FileInputMethod)
irb.eval_input
else
begin
irb.eval_input
rescue LoadAbort
print "load abort!!\n"
end
end
end
end
end
end
end
end
def old # :nodoc:
back_io = @io
back_path = irb_path
back_name = @irb_name
back_scanner = @irb.scanner
begin
@io = FileInputMethod.new(path)
@irb_name = File.basename(path)
self.irb_path = path
@irb.signal_status(:IN_LOAD) do
if back_io.kind_of?(FileInputMethod)
@irb.eval_input
else
begin
@irb.eval_input
rescue LoadAbort
print "load abort!!\n"
end
end
end
ensure
@io = back_io
@irb_name = back_name
self.irb_path = back_path
@irb.scanner = back_scanner
end
end
end
end
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