Class: Command::Checkout

Inherits:
Base
  • Object
show all
Defined in:
lib/command/checkout.rb

Constant Summary collapse

DETACHED_HEAD_MESSAGE = 
<<~MSG
  You are in 'detached HEAD' state. You can look around, make experimental
  changes and commit them, and you can discard any commits you make in this
  state without impacting any branches by performing another checkout.

  If you want to create a new branch to retain commits you create, you may
  do so (now or later) by using the branch command. Example:

    jit branch <new-branch-name>
MSG

Instance Attribute Summary

Attributes inherited from Base

#status

Instance Method Summary collapse

Methods inherited from Base

#execute, #initialize

Constructor Details

This class inherits a constructor from Command::Base

Instance Method Details

#run ⇒ Object 



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# File 'lib/command/checkout.rb', line 18

def run
  @target = @args[0]

  @current_ref = repo.refs.current_ref
  @current_oid = @current_ref.read_oid

  revision    = Revision.new(repo, @target)
  @target_oid = revision.resolve(Revision::COMMIT)

  repo.index.load_for_update

  tree_diff = repo.database.tree_diff(@current_oid, @target_oid)
  migration = repo.migration(tree_diff)
  migration.apply_changes

  repo.index.write_updates
  repo.refs.set_head(@target, @target_oid)
  @new_ref = repo.refs.current_ref

  print_previous_head
  print_detachment_notice
  print_new_head

  exit 0

rescue Repository::Migration::Conflict
  handle_migration_conflict(migration)

rescue Revision::InvalidObject => error
  handle_invalid_object(revision, error)
end