Add bin and edit workflow

bin/gems/pry-0.15.2/lib/pry/repl_file_loader.rb

@@ -0,0 +1,79 @@
+# frozen_string_literal: true
+
+class Pry
+  # A class to manage the loading of files through the REPL loop.
+  # This is an interesting trick as it processes your file as if it
+  # was user input in an interactive session. As a result, all Pry
+  # commands are available, and they are executed non-interactively. Furthermore
+  # the session becomes interactive when the repl loop processes a
+  # 'make-interactive' command in the file. The session also becomes
+  # interactive when an exception is encountered, enabling you to fix
+  # the error before returning to non-interactive processing with the
+  # 'make-non-interactive' command.
+
+  class REPLFileLoader
+    def initialize(file_name)
+      full_name = File.expand_path(file_name)
+      raise "No such file: #{full_name}" unless File.exist?(full_name)
+
+      define_additional_commands
+      @content = File.read(full_name)
+    end
+
+    # Switch to interactive mode, i.e take input from the user
+    # and use the regular print and exception handlers.
+    # @param [Pry] pry_instance the Pry instance to make interactive.
+    def interactive_mode(pry_instance)
+      pry_instance.config.input = Pry.config.input
+      pry_instance.config.print = Pry.config.print
+      pry_instance.config.exception_handler = Pry.config.exception_handler
+      Pry::REPL.new(pry_instance).start
+    end
+
+    # Switch to non-interactive mode. Essentially
+    # this means there is no result output
+    # and that the session becomes interactive when an exception is encountered.
+    # @param [Pry] pry_instance the Pry instance to make non-interactive.
+    def non_interactive_mode(pry_instance, content)
+      pry_instance.print = proc {}
+      pry_instance.exception_handler = proc do |o, _e, p|
+        p.run_command "cat --ex"
+        o.puts "...exception encountered, going interactive!"
+        interactive_mode(pry_instance)
+      end
+
+      content.lines.each do |line|
+        break unless pry_instance.eval line, generated: true
+      end
+
+      return if pry_instance.eval_string.empty?
+
+      pry_instance.output.puts(
+        "#{pry_instance.eval_string}...exception encountered, going interactive!"
+      )
+      interactive_mode(pry_instance)
+    end
+
+    # Define a few extra commands useful for flipping back & forth
+    # between interactive/non-interactive modes
+    def define_additional_commands
+      s = self
+
+      Pry::Commands.command "make-interactive", "Make the session interactive" do
+        s.interactive_mode(pry_instance)
+      end
+
+      Pry::Commands.command(
+        "load-file", "Load another file through the repl"
+      ) do |file_name|
+        s.non_interactive_mode(pry_instance, File.read(File.expand_path(file_name)))
+      end
+    end
+
+    # Actually load the file through the REPL by setting file content
+    # as the REPL input stream.
+    def load
+      non_interactive_mode(Pry.new, @content)
+    end
+  end
+end