111 lines
3.5 KiB
Ruby
111 lines
3.5 KiB
Ruby
class Pry
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module DefaultCommands
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NavigatingPry = Pry::CommandSet.new do
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command "switch-to", "Start a new sub-session on a binding in the current stack (numbered by nesting)." do |selection|
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selection = selection.to_i
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if selection < 0 || selection > _pry_.binding_stack.size - 1
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raise CommandError, "Invalid binding index #{selection} - use `nesting` command to view valid indices."
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else
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Pry.start(_pry_.binding_stack[selection])
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end
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end
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command "nesting", "Show nesting information." do
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output.puts "Nesting status:"
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output.puts "--"
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_pry_.binding_stack.each_with_index do |obj, level|
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if level == 0
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output.puts "#{level}. #{Pry.view_clip(obj.eval('self'))} (Pry top level)"
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else
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output.puts "#{level}. #{Pry.view_clip(obj.eval('self'))}"
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end
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end
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end
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command "jump-to", "Jump to a binding further up the stack, popping all bindings below." do |break_level|
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break_level = break_level.to_i
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nesting_level = _pry_.binding_stack.size - 1
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case break_level
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when nesting_level
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output.puts "Already at nesting level #{nesting_level}"
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when (0...nesting_level)
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_pry_.binding_stack.slice!(break_level + 1, _pry_.binding_stack.size)
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else
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max_nest_level = nesting_level - 1
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output.puts "Invalid nest level. Must be between 0 and #{max_nest_level}. Got #{break_level}."
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end
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end
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command "exit-all", "End the current Pry session (popping all bindings) and returning to caller. Accepts optional return value. Aliases: !!@" do
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# calculate user-given value
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exit_value = target.eval(arg_string)
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# clear the binding stack
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_pry_.binding_stack.clear
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# break out of the repl loop
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throw(:breakout, exit_value)
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end
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alias_command "!!@", "exit-all"
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create_command "exit" do
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description "Pop the previous binding (does NOT exit program). Aliases: quit"
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banner <<-BANNER
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Usage: exit [OPTIONS] [--help]
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Aliases: quit
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It can be useful to exit a context with a user-provided value. For
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instance an exit value can be used to determine program flow.
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e.g: `exit "pry this"`
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e.g: `exit`
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https://github.com/pry/pry/wiki/State-navigation#wiki-Exit_with_value
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BANNER
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command_options(
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:keep_retval => true
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)
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def process
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if _pry_.binding_stack.one?
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_pry_.run_command "exit-all #{arg_string}"
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else
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# otherwise just pop a binding and return user supplied value
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process_pop_and_return
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end
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end
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def process_pop_and_return
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popped_object = _pry_.binding_stack.pop.eval('self')
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# return a user-specified value if given otherwise return the object
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return target.eval(arg_string) unless arg_string.empty?
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popped_object
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end
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end
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alias_command "quit", "exit"
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command "exit-program", "End the current program. Aliases: quit-program, !!!" do
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Pry.save_history if Pry.config.history.should_save
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Kernel.exit target.eval(arg_string).to_i
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end
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alias_command "quit-program", "exit-program"
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alias_command "!!!", "exit-program"
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command "!pry", "Start a Pry session on current self; this even works mid multi-line expression." do
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target.pry
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end
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end
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end
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end
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