Add bin and edit workflow

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

@@ -0,0 +1,214 @@
+# frozen_string_literal: true
+
+class Pry
+  # Prompt represents the Pry prompt, which can be used with Readline-like
+  # libraries. It defines a few default prompts (default prompt, simple prompt,
+  # etc) and also provides an API for adding and implementing custom prompts.
+  #
+  # @example Registering a new Pry prompt
+  #   Pry::Prompt.add(
+  #     :ipython,
+  #     'IPython-like prompt', [':', '...:']
+  #   ) do |_context, _nesting, pry_instance, sep|
+  #     sep == ':' ? "In [#{pry_instance.input_ring.count}]: " : '   ...: '
+  #   end
+  #
+  #   # Produces:
+  #   # In [3]: def foo
+  #   #    ...:   puts 'foo'
+  #   #    ...: end
+  #   # => :foo
+  #   # In [4]:
+  #
+  # @example Manually instantiating the Prompt class
+  #   prompt_procs = [
+  #     proc { '#{rand(1)}>" },
+  #     proc { "#{('a'..'z').to_a.sample}*" }
+  #   ]
+  #   prompt = Pry::Prompt.new(
+  #     :random,
+  #     'Random number or letter prompt.',
+  #     prompt_procs
+  #   )
+  #   prompt.wait_proc.call(...) #=>
+  #   prompt.incomplete_proc.call(...)
+  #
+  # @since v0.11.0
+  # @api public
+  class Prompt
+    # A Hash that holds all prompts. The keys of the Hash are prompt
+    # names, the values are Hash instances of the format {:description, :value}.
+    @prompts = {}
+
+    class << self
+      # Retrieves a prompt.
+      #
+      # @example
+      #   Prompt[:my_prompt]
+      #
+      # @param [Symbol] name The name of the prompt you want to access
+      # @return [Hash{Symbol=>Object}]
+      # @since v0.12.0
+      def [](name)
+        @prompts[name.to_s]
+      end
+
+      # @return [Hash{Symbol=>Hash}] the duplicate of the internal prompts hash
+      # @note Use this for read-only operations
+      # @since v0.12.0
+      def all
+        @prompts.dup
+      end
+
+      # Adds a new prompt to the prompt hash.
+      #
+      # @param [Symbol] name
+      # @param [String] description
+      # @param [Array<String>] separators The separators to differentiate
+      #   between prompt modes (default mode and class/method definition mode).
+      #   The Array *must* have a size of 2.
+      # @yield [context, nesting, pry_instance, sep]
+      # @yieldparam context [Object] the context where Pry is currently in
+      # @yieldparam nesting [Integer] whether the context is nested
+      # @yieldparam pry_instance [Pry] the Pry instance
+      # @yieldparam separator [String] separator string
+      # @return [nil]
+      # @raise [ArgumentError] if the size of `separators` is not 2
+      # @raise [ArgumentError] if `prompt_name` is already occupied
+      # @since v0.12.0
+      def add(name, description = '', separators = %w[> *])
+        name = name.to_s
+
+        unless separators.size == 2
+          raise ArgumentError, "separators size must be 2, given #{separators.size}"
+        end
+
+        if @prompts.key?(name)
+          raise ArgumentError, "the '#{name}' prompt was already added"
+        end
+
+        @prompts[name] = new(
+          name,
+          description,
+          separators.map do |sep|
+            proc do |context, nesting, pry_instance|
+              yield(context, nesting, pry_instance, sep)
+            end
+          end
+        )
+
+        nil
+      end
+    end
+
+    # @return [String]
+    attr_reader :name
+
+    # @return [String]
+    attr_reader :description
+
+    # @return [Array<Proc>] the array of procs that hold
+    #   `[wait_proc, incomplete_proc]`
+    attr_reader :prompt_procs
+
+    # @param [String] name
+    # @param [String] description
+    # @param [Array<Proc>] prompt_procs
+    def initialize(name, description, prompt_procs)
+      @name = name
+      @description = description
+      @prompt_procs = prompt_procs
+    end
+
+    # @return [Proc] the proc which builds the wait prompt (`>`)
+    def wait_proc
+      @prompt_procs.first
+    end
+
+    # @return [Proc] the proc which builds the prompt when in the middle of an
+    #   expression such as open method, etc. (`*`)
+    def incomplete_proc
+      @prompt_procs.last
+    end
+
+    # @deprecated Use a `Pry::Prompt` instance directly
+    def [](key)
+      key = key.to_s
+      if %w[name description].include?(key)
+        Pry::Warning.warn(
+          "`Pry::Prompt[:#{@name}][:#{key}]` is deprecated. " \
+          "Use `#{self.class}##{key}` instead"
+        )
+        public_send(key)
+      elsif key.to_s == 'value'
+        Pry::Warning.warn(
+          "`#{self.class}[:#{@name}][:value]` is deprecated. Use " \
+          "`#{self.class}#prompt_procs` instead or an instance of " \
+          "`#{self.class}` directly"
+        )
+        @prompt_procs
+      end
+    end
+
+    add(
+      :default,
+      "The default Pry prompt. Includes information about the current expression \n" \
+      "number, evaluation context, and nesting level, plus a reminder that you're \n" \
+      'using Pry.'
+    ) do |context, nesting, pry_instance, sep|
+      format(
+        "[%<in_count>s] %<name>s(%<context>s)%<nesting>s%<separator>s ",
+        in_count: pry_instance.input_ring.count,
+        name: pry_instance.config.prompt_name,
+        context: Pry.view_clip(context),
+        nesting: (nesting > 0 ? ":#{nesting}" : ''),
+        separator: sep
+      )
+    end
+
+    add(
+      :simple,
+      "A simple `>>`.",
+      ['>> ', ' | ']
+    ) do |_, _, _, sep|
+      sep
+    end
+
+    add(
+      :nav,
+      "A prompt that displays the binding stack as a path and includes information \n" \
+      "about #{Helpers::Text.bold('_in_')} and #{Helpers::Text.bold('_out_')}.",
+      %w[> *]
+    ) do |_context, _nesting, pry_instance, sep|
+      tree = pry_instance.binding_stack.map { |b| Pry.view_clip(b.eval('self')) }
+      format(
+        "[%<in_count>s] (%<name>s) %<tree>s: %<stack_size>s%<separator>s ",
+        in_count: pry_instance.input_ring.count,
+        name: pry_instance.config.prompt_name,
+        tree: tree.join(' / '),
+        stack_size: pry_instance.binding_stack.size - 1,
+        separator: sep
+      )
+    end
+
+    add(
+      :shell,
+      'A prompt that displays `$PWD` as you change it.',
+      %w[$ *]
+    ) do |context, _nesting, pry_instance, sep|
+      format(
+        "%<name>s %<context>s:%<pwd>s %<separator>s ",
+        name: pry_instance.config.prompt_name,
+        context: Pry.view_clip(context),
+        pwd: Dir.pwd,
+        separator: sep
+      )
+    end
+
+    add(
+      :none,
+      'Wave goodbye to the Pry prompt.',
+      Array.new(2)
+    ) { '' }
+  end
+end