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cider-repl.el
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cider-repl.el
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;;; cider-repl.el --- CIDER REPL mode interactions -*- lexical-binding: t -*-
;; Copyright © 2012-2024 Tim King, Phil Hagelberg, Bozhidar Batsov
;; Copyright © 2013-2024 Bozhidar Batsov, Artur Malabarba and CIDER contributors
;;
;; Author: Tim King <[email protected]>
;; Phil Hagelberg <[email protected]>
;; Bozhidar Batsov <[email protected]>
;; Artur Malabarba <[email protected]>
;; Hugo Duncan <[email protected]>
;; Steve Purcell <[email protected]>
;; Reid McKenzie <[email protected]>
;; This program is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
;; This file is not part of GNU Emacs.
;;; Commentary:
;; This functionality concerns `cider-repl-mode' and REPL interaction. For
;; REPL/connection life-cycle management see cider-connection.el.
;;; Code:
(require 'cl-lib)
(require 'easymenu)
(require 'image)
(require 'map)
(require 'seq)
(require 'subr-x)
(require 'clojure-mode)
(require 'sesman)
(require 'cider-client)
(require 'cider-doc)
(require 'cider-test)
(require 'cider-eldoc) ; for cider-eldoc-setup
(require 'cider-common)
(require 'cider-util)
(require 'cider-resolve)
(declare-function cider-inspect "cider-inspector")
(defgroup cider-repl nil
"Interaction with the REPL."
:prefix "cider-repl-"
:group 'cider)
(defface cider-repl-prompt-face
'((t (:inherit font-lock-keyword-face)))
"Face for the prompt in the REPL buffer.")
(defface cider-repl-stdout-face
'((t (:inherit font-lock-string-face)))
"Face for STDOUT output in the REPL buffer.")
(defface cider-repl-stderr-face
'((t (:inherit font-lock-warning-face)))
"Face for STDERR output in the REPL buffer."
:package-version '(cider . "0.6.0"))
(defface cider-repl-input-face
'((t (:bold t)))
"Face for previous input in the REPL buffer.")
(defface cider-repl-result-face
'((t ()))
"Face for the result of an evaluation in the REPL buffer.")
(defcustom cider-repl-pop-to-buffer-on-connect t
"Controls whether to pop to the REPL buffer on connect.
When set to nil the buffer will only be created, and not displayed. When
set to `display-only' the buffer will be displayed, but it will not become
focused. Otherwise the buffer is displayed and focused."
:type '(choice (const :tag "Create the buffer, but don't display it" nil)
(const :tag "Create and display the buffer, but don't focus it"
display-only)
(const :tag "Create, display, and focus the buffer" t)))
(defcustom cider-repl-display-in-current-window nil
"Controls whether the REPL buffer is displayed in the current window."
:type 'boolean)
(make-obsolete-variable 'cider-repl-scroll-on-output 'scroll-conservatively "0.21")
(defcustom cider-repl-use-pretty-printing t
"Control whether results in the REPL are pretty-printed or not.
The REPL will use the printer specified in `cider-print-fn'.
The `cider-toggle-pretty-printing' command can be used to interactively
change the setting's value."
:type 'boolean)
(make-obsolete-variable 'cider-repl-pretty-print-width 'cider-print-options "0.21")
(defcustom cider-repl-use-content-types nil
"Control whether REPL results are presented using content-type information.
The `cider-repl-toggle-content-types' command can be used to interactively
change the setting's value."
:type 'boolean
:package-version '(cider . "0.17.0"))
(defcustom cider-repl-auto-detect-type t
"Control whether to auto-detect the REPL type using track-state information.
If you disable this you'll have to manually change the REPL type between
Clojure and ClojureScript when invoking REPL type changing forms.
Use `cider-set-repl-type' to manually change the REPL type."
:type 'boolean
:safe #'booleanp
:package-version '(cider . "0.18.0"))
(defcustom cider-repl-use-clojure-font-lock t
"Non-nil means to use Clojure mode font-locking for input and result.
Nil means that `cider-repl-input-face' and `cider-repl-result-face'
will be used."
:type 'boolean
:package-version '(cider . "0.10.0"))
(defcustom cider-repl-require-ns-on-set nil
"Controls whether to require the ns before setting it in the REPL."
:type 'boolean
:package-version '(cider . "0.22.0"))
(defcustom cider-repl-result-prefix ""
"The prefix displayed in the REPL before a result value.
By default there's no prefix, but you can specify something
like \"=>\" if want results to stand out more."
:type 'string
:group 'cider
:package-version '(cider . "0.5.0"))
(defcustom cider-repl-tab-command 'cider-repl-indent-and-complete-symbol
"Select the command to be invoked by the TAB key.
The default option is `cider-repl-indent-and-complete-symbol'. If
you'd like to use the default Emacs behavior use
`indent-for-tab-command'."
:type 'symbol)
(make-obsolete-variable 'cider-repl-print-length 'cider-print-options "0.21")
(make-obsolete-variable 'cider-repl-print-level 'cider-print-options "0.21")
(defvar cider-repl-require-repl-utils-code
'((clj . "(when-let [requires (resolve 'clojure.main/repl-requires)]
(clojure.core/apply clojure.core/require @requires))")
(cljs . "(require '[cljs.repl :refer [apropos dir doc find-doc print-doc pst source]])")))
(defcustom cider-repl-init-code (list (cdr (assoc 'clj cider-repl-require-repl-utils-code)))
"Clojure code to evaluate when starting a REPL.
Will be evaluated with bindings for set!-able vars in place.
See also `cider-repl-eval-init-code'."
:type '(list string)
:package-version '(cider . "0.21.0"))
(defcustom cider-repl-display-help-banner t
"When non-nil a bit of help text will be displayed on REPL start."
:type 'boolean
:package-version '(cider . "0.11.0"))
;; See https://github.com/clojure-emacs/cider/issues/3219 for more details
(defcustom cider-repl-display-output-before-window-boundaries nil
"Controls whether to display output emitted before the REPL window boundaries.
If the prompt is on the first line of the window, then scroll the window
down by a single line to make the emitted output visible.
That behavior is desirable, but rarely needed and it slows down printing
output a lot (e.g. 10x) that's why it's disable by default starting with
CIDER 1.7."
:type 'boolean
:package-version '(cider . "1.7.0"))
;;;; REPL buffer local variables
(defvar-local cider-repl-input-start-mark nil)
(defvar-local cider-repl-prompt-start-mark nil)
(defvar-local cider-repl-old-input-counter 0
"Counter used to generate unique `cider-old-input' properties.
This property value must be unique to avoid having adjacent inputs be
joined together.")
(defvar-local cider-repl-output-start nil
"Marker for the start of output.
Currently its only purpose is to facilitate `cider-repl-clear-buffer'.")
(defvar-local cider-repl-output-end nil
"Marker for the end of output.
Currently its only purpose is to facilitate `cider-repl-clear-buffer'.")
(defun cider-repl-tab ()
"Invoked on TAB keystrokes in `cider-repl-mode' buffers."
(interactive)
(funcall cider-repl-tab-command))
(defun cider-repl-reset-markers ()
"Reset all REPL markers."
(dolist (markname '(cider-repl-output-start
cider-repl-output-end
cider-repl-prompt-start-mark
cider-repl-input-start-mark))
(set markname (make-marker))
(set-marker (symbol-value markname) (point))))
;;; REPL init
(defvar-local cider-repl-ns-cache nil
"A dict holding information about all currently loaded namespaces.
This cache is stored in the connection buffer.")
(defvar cider-mode)
(declare-function cider-refresh-dynamic-font-lock "cider-mode")
(defun cider-repl--state-handler (response)
"Handle server state contained in RESPONSE."
(with-demoted-errors "Error in `cider-repl--state-handler': %s"
(when (member "state" (nrepl-dict-get response "status"))
(nrepl-dbind-response response (repl-type changed-namespaces session)
(when (and repl-type
cider-repl-auto-detect-type
;; tooling sessions always run on the JVM so they are not a valid criterion:
(not (equal session nrepl-tooling-session)))
(cider-set-repl-type repl-type))
(when (eq (cider-maybe-intern repl-type) 'cljs)
(setq cider-repl-cljs-upgrade-pending nil))
(unless (nrepl-dict-empty-p changed-namespaces)
(setq cider-repl-ns-cache (nrepl-dict-merge cider-repl-ns-cache changed-namespaces))
(let ((this-repl (current-buffer)))
(dolist (b (buffer-list))
(with-current-buffer b
(when (or cider-mode (derived-mode-p 'cider-repl-mode))
;; We only cider-refresh-dynamic-font-lock (and set `cider-eldoc-last-symbol')
;; for Clojure buffers directly related to this repl
;; (specifically, we omit 'friendly' sessions because a given buffer may be friendly to multiple repls,
;; so we don't want a buffer to mix up font locking rules from different repls).
;; Note that `sesman--linked-sessions' only queries for the directly linked sessions.
;; That has the additional advantage of running very/predictably fast, since it won't run our
;; `cider--sesman-friendly-session-p' logic, which can be slow for its non-cached path.
(when (member this-repl (car (sesman--linked-sessions 'CIDER)))
;; Metadata changed, so signatures may have changed too.
(setq cider-eldoc-last-symbol nil)
(when-let* ((ns-dict (or (nrepl-dict-get changed-namespaces (cider-current-ns))
(let ((ns-dict (cider-resolve--get-in (cider-current-ns))))
(when (seq-find (lambda (ns) (nrepl-dict-get changed-namespaces ns))
(nrepl-dict-get ns-dict "aliases"))
ns-dict)))))
(cider-refresh-dynamic-font-lock ns-dict))))))))))))
(defun cider-repl-require-repl-utils ()
"Require standard REPL util functions into the current REPL."
(interactive)
(let* ((current-repl (cider-current-repl nil 'ensure))
(require-code (cdr (assoc (cider-repl-type current-repl) cider-repl-require-repl-utils-code))))
(nrepl-send-sync-request
(lax-plist-put
(nrepl--eval-request require-code (cider-current-ns))
"inhibit-cider-middleware" "true")
current-repl)))
(defun cider-repl-init-eval-handler (&optional callback)
"Make an nREPL evaluation handler for use during REPL init.
Run CALLBACK once the evaluation is complete."
(nrepl-make-response-handler (current-buffer)
(lambda (_buffer _value))
(lambda (buffer out)
(cider-repl-emit-stdout buffer out))
(lambda (buffer err)
(cider-repl-emit-stderr buffer err))
(lambda (buffer)
(cider-repl-emit-prompt buffer)
(when callback
(funcall callback)))))
(defun cider-repl-eval-init-code (&optional callback)
"Evaluate `cider-repl-init-code' in the current REPL.
Run CALLBACK once the evaluation is complete."
(interactive)
(let* ((request (map-merge 'hash-table
(cider--repl-request-map fill-column)
'(("inhibit-cider-middleware" "true")))))
(cider-nrepl-request:eval
;; Ensure we evaluate _something_ so the initial namespace is correctly set
(thread-first (or cider-repl-init-code '("nil"))
(string-join "\n"))
(cider-repl-init-eval-handler callback)
nil
(line-number-at-pos (point))
(cider-column-number-at-pos (point))
(thread-last
request
(map-pairs)
(seq-mapcat #'identity)))))
(defun cider-repl-init (buffer &optional callback)
"Initialize the REPL in BUFFER.
BUFFER must be a REPL buffer with `cider-repl-mode' and a running
client process connection. CALLBACK will be run once the REPL is
fully initialized."
(when cider-repl-display-in-current-window
(add-to-list 'same-window-buffer-names (buffer-name buffer)))
(pcase cider-repl-pop-to-buffer-on-connect
(`display-only
(let ((orig-buffer (current-buffer)))
(display-buffer buffer)
;; User popup-rules (specifically `:select nil') can cause the call to
;; `display-buffer' to reset the current Emacs buffer to the clj/cljs
;; buffer that the user ran `jack-in' from - we need the current-buffer
;; to be the repl to initialize, so reset it back here to be resilient
;; against user config
(set-buffer orig-buffer)))
((pred identity) (pop-to-buffer buffer)))
(with-current-buffer buffer
(cider-repl--insert-banner)
(cider-repl--insert-startup-commands)
(when-let* ((window (get-buffer-window buffer t)))
(with-selected-window window
(recenter (- -1 scroll-margin))))
(cider-repl-eval-init-code callback))
buffer)
(defun cider-repl--insert-banner ()
"Insert the banner in the current REPL buffer."
(insert-before-markers
(propertize (cider-repl--banner) 'font-lock-face 'font-lock-comment-face))
(when cider-repl-display-help-banner
(insert-before-markers
(propertize (cider-repl--help-banner) 'font-lock-face 'font-lock-comment-face))))
(defun cider-repl--insert-startup-commands ()
"Insert the values from params specified in PARAM-TUPLES.
PARAM-TUPLES are tuples of (param-key description) or (param-key
description transform) where transform is called with the param-value if
present."
(cl-labels
((emit-comment
(contents)
(insert-before-markers
(propertize
(if (string-blank-p contents) ";;\n" (concat ";; " contents "\n"))
'font-lock-face 'font-lock-comment-face))))
(let ((jack-in-command (plist-get cider-launch-params :jack-in-cmd))
(cljs-repl-type (plist-get cider-launch-params :cljs-repl-type))
(cljs-init-form (plist-get cider-launch-params :repl-init-form)))
(when jack-in-command
;; spaces to align with the banner
(emit-comment (concat " Startup: " jack-in-command)))
(when (or cljs-repl-type cljs-init-form)
(emit-comment "")
(when cljs-repl-type
(emit-comment (concat "ClojureScript REPL type: " (symbol-name cljs-repl-type))))
(when cljs-init-form
(emit-comment (concat "ClojureScript REPL init form: " cljs-init-form)))
(emit-comment "")))))
(defun cider-repl--banner ()
"Generate the welcome REPL buffer banner."
(cond
((cider--clojure-version) (cider-repl--clojure-banner))
((cider--babashka-version) (cider-repl--babashka-banner))
(t (cider-repl--basic-banner))))
(defun cider-repl--clojure-banner ()
"Generate the welcome REPL buffer banner for Clojure(Script)."
(format ";; Connected to nREPL server - nrepl://%s:%s
;; CIDER %s, nREPL %s
;; Clojure %s, Java %s
;; Docs: (doc function-name)
;; (find-doc part-of-name)
;; Source: (source function-name)
;; Javadoc: (javadoc java-object-or-class)
;; Exit: <C-c C-q>
;; Results: Stored in vars *1, *2, *3, an exception in *e;
"
(plist-get nrepl-endpoint :host)
(plist-get nrepl-endpoint :port)
(cider--version)
(cider--nrepl-version)
(cider--clojure-version)
(cider--java-version)))
(defun cider-repl--babashka-banner ()
"Generate the welcome REPL buffer banner for Babashka."
(format ";; Connected to nREPL server - nrepl://%s:%s
;; CIDER %s, babashka.nrepl %s
;; Babashka %s
;; Docs: (doc function-name)
;; (find-doc part-of-name)
;; Source: (source function-name)
;; Javadoc: (javadoc java-object-or-class)
;; Exit: <C-c C-q>
;; Results: Stored in vars *1, *2, *3, an exception in *e;
"
(plist-get nrepl-endpoint :host)
(plist-get nrepl-endpoint :port)
(cider--version)
(cider--babashka-nrepl-version)
(cider--babashka-version)))
(defun cider-repl--basic-banner ()
"Generate a basic banner with minimal info."
(format ";; Connected to nREPL server - nrepl://%s:%s
;; CIDER %s
"
(plist-get nrepl-endpoint :host)
(plist-get nrepl-endpoint :port)
(cider--version)))
(defun cider-repl--help-banner ()
"Generate the help banner."
(substitute-command-keys
";; ======================================================================
;; If you're new to CIDER it is highly recommended to go through its
;; user manual first. Type <M-x cider-view-manual> to view it.
;; In case you're seeing any warnings you should consult the manual's
;; \"Troubleshooting\" section.
;;
;; Here are a few tips to get you started:
;;
;; * Press <\\[describe-mode]> to see a list of the keybindings available (this
;; will work in every Emacs buffer)
;; * Press <\\[cider-repl-handle-shortcut]> to quickly invoke some REPL command
;; * Press <\\[cider-switch-to-last-clojure-buffer]> to switch between the REPL and a Clojure file
;; * Press <\\[cider-find-var]> to jump to the source of something (e.g. a var, a
;; Java method)
;; * Press <\\[cider-doc]> to view the documentation for something (e.g.
;; a var, a Java method)
;; * Print CIDER's refcard and keep it close to your keyboard.
;;
;; CIDER is super customizable - try <M-x customize-group cider> to
;; get a feel for this. If you're thirsty for knowledge you should try
;; <M-x cider-drink-a-sip>.
;;
;; If you think you've encountered a bug (or have some suggestions for
;; improvements) use <M-x cider-report-bug> to report it.
;;
;; Above all else - don't panic! In case of an emergency - procure
;; some (hard) cider and enjoy it responsibly!
;;
;; You can remove this message with the <M-x cider-repl-clear-help-banner> command.
;; You can disable it from appearing on start by setting
;; `cider-repl-display-help-banner' to nil.
;; ======================================================================
"))
;;; REPL interaction
(defun cider-repl--in-input-area-p ()
"Return t if in input area."
(<= cider-repl-input-start-mark (point)))
(defun cider-repl--current-input (&optional until-point-p)
"Return the current input as string.
The input is the region from after the last prompt to the end of
buffer. If UNTIL-POINT-P is non-nil, the input is until the current
point."
(buffer-substring-no-properties cider-repl-input-start-mark
(if until-point-p
(point)
(point-max))))
(defun cider-repl-previous-prompt ()
"Move backward to the previous prompt."
(interactive)
(cider-repl--find-prompt t))
(defun cider-repl-next-prompt ()
"Move forward to the next prompt."
(interactive)
(cider-repl--find-prompt))
(defun cider-repl--find-prompt (&optional backward)
"Find the next prompt.
If BACKWARD is non-nil look backward."
(let ((origin (point))
(cider-repl-prompt-property 'field))
(while (progn
(cider-search-property-change cider-repl-prompt-property backward)
(not (or (cider-end-of-proprange-p cider-repl-prompt-property) (bobp) (eobp)))))
(unless (cider-end-of-proprange-p cider-repl-prompt-property)
(goto-char origin))))
(defun cider-search-property-change (prop &optional backward)
"Search forward for a property change to PROP.
If BACKWARD is non-nil search backward."
(cond (backward
(goto-char (previous-single-char-property-change (point) prop)))
(t
(goto-char (next-single-char-property-change (point) prop)))))
(defun cider-end-of-proprange-p (property)
"Return t if at the the end of a property range for PROPERTY."
(and (get-char-property (max (point-min) (1- (point))) property)
(not (get-char-property (point) property))))
(defun cider-repl--mark-input-start ()
"Mark the input start."
(set-marker cider-repl-input-start-mark (point) (current-buffer)))
(defun cider-repl--mark-output-start ()
"Mark the output start."
(set-marker cider-repl-output-start (point))
(set-marker cider-repl-output-end (point)))
(defun cider-repl-mode-beginning-of-defun (&optional arg)
"Move to the beginning of defun.
If given a negative value of ARG, move to the end of defun."
(if (and arg (< arg 0))
(cider-repl-mode-end-of-defun (- arg))
(dotimes (_ (or arg 1))
(cider-repl-previous-prompt))))
(defun cider-repl-mode-end-of-defun (&optional arg)
"Move to the end of defun.
If given a negative value of ARG, move to the beginning of defun."
(if (and arg (< arg 0))
(cider-repl-mode-beginning-of-defun (- arg))
(dotimes (_ (or arg 1))
(cider-repl-next-prompt))))
(defun cider-repl-beginning-of-defun ()
"Move to beginning of defun."
(interactive)
;; We call `beginning-of-defun' if we're at the start of a prompt
;; already, to trigger `cider-repl-mode-beginning-of-defun' by means
;; of the locally bound `beginning-of-defun-function', in order to
;; jump to the start of the previous prompt.
(if (and (not (cider-repl--at-prompt-start-p))
(cider-repl--in-input-area-p))
(goto-char cider-repl-input-start-mark)
(beginning-of-defun-raw)))
(defun cider-repl-end-of-defun ()
"Move to end of defun."
(interactive)
;; C.f. `cider-repl-beginning-of-defun'
(if (and (not (= (point) (point-max)))
(cider-repl--in-input-area-p))
(goto-char (point-max))
(end-of-defun)))
(defun cider-repl-bol-mark ()
"Set the mark and go to the beginning of line or the prompt."
(interactive)
(unless mark-active
(set-mark (point)))
(move-beginning-of-line 1))
(defun cider-repl--at-prompt-start-p ()
"Return t if point is at the start of prompt.
This will not work on non-current prompts."
(= (point) cider-repl-input-start-mark))
(defmacro cider-save-marker (marker &rest body)
"Save MARKER and execute BODY."
(declare (debug t))
(let ((pos (make-symbol "pos")))
`(let ((,pos (marker-position ,marker)))
(prog1 (progn . ,body)
(set-marker ,marker ,pos)))))
(put 'cider-save-marker 'lisp-indent-function 1)
(defun cider-repl-prompt-default (namespace)
"Return a prompt string that mentions NAMESPACE."
(format "%s> " namespace))
(defun cider-repl-prompt-abbreviated (namespace)
"Return a prompt string that abbreviates NAMESPACE."
(format "%s> " (cider-abbreviate-ns namespace)))
(defun cider-repl-prompt-lastname (namespace)
"Return a prompt string with the last name in NAMESPACE."
(format "%s> " (cider-last-ns-segment namespace)))
(defcustom cider-repl-prompt-function #'cider-repl-prompt-default
"A function that returns a prompt string.
Takes one argument, a namespace name.
For convenience, three functions are already provided for this purpose:
`cider-repl-prompt-lastname', `cider-repl-prompt-abbreviated', and
`cider-repl-prompt-default'."
:type '(choice (const :tag "Full namespace" cider-repl-prompt-default)
(const :tag "Abbreviated namespace" cider-repl-prompt-abbreviated)
(const :tag "Last name in namespace" cider-repl-prompt-lastname)
(function :tag "Custom function"))
:package-version '(cider . "0.9.0"))
(defun cider-repl--insert-prompt (namespace)
"Insert the prompt (before markers!), taking into account NAMESPACE.
Set point after the prompt.
Return the position of the prompt beginning."
(goto-char cider-repl-input-start-mark)
(cider-save-marker cider-repl-output-start
(cider-save-marker cider-repl-output-end
(unless (bolp) (insert-before-markers "\n"))
(let ((prompt-start (point))
(prompt (funcall cider-repl-prompt-function namespace)))
(cider-propertize-region
'(font-lock-face cider-repl-prompt-face read-only t intangible t
field cider-repl-prompt
rear-nonsticky (field read-only font-lock-face intangible))
(insert-before-markers prompt))
(set-marker cider-repl-prompt-start-mark prompt-start)
prompt-start))))
(defun cider-repl--ansi-color-apply (string)
"Like `ansi-color-apply', but does not withhold non-SGR seqs found in STRING.
Workaround for Emacs bug#53808 whereby partial ANSI control seqs present in
the input stream may block the whole colorization process."
(let* ((result (ansi-color-apply string))
;; The STRING may end with a possible incomplete ANSI control seq which
;; the call to `ansi-color-apply' stores in the `ansi-color-context'
;; fragment. If the fragment is not an incomplete ANSI color control
;; sequence (aka SGR seq) though then flush it out and appended it to
;; the result.
(fragment-flush?
(when-let (fragment (and ansi-color-context (cadr ansi-color-context)))
(save-match-data
;; Check if fragment is indeed an SGR seq in the making. The SGR
;; seq is defined as starting with ESC followed by [ followed by
;; zero or more [:digit:]+; followed by one or more digits and
;; ending with m.
(when (string-match
(rx (sequence ?\e
(? (and (or ?\[ eol)
(or (+ (any (?0 . ?9))) eol)
(* (sequence ?\; (+ (any (?0 . ?9)))))
(or ?\; eol)))))
fragment)
(let* ((sgr-end-pos (match-end 0))
(fragment-matches-whole? (or (= sgr-end-pos 0)
(= sgr-end-pos (length fragment)))))
(when (not fragment-matches-whole?)
;; Definitely not an partial SGR seq, flush it out of
;; `ansi-color-context'.
t)))))))
(if (not fragment-flush?)
result
(progn
;; Temporarily replace the ESC char in the fragment so that is flushed
;; out of `ansi-color-context' by `ansi-color-apply' and append it to
;; the result.
(aset (cadr ansi-color-context) 0 ?\0)
(let ((result-fragment (ansi-color-apply "")))
(aset result-fragment 0 ?\e)
(concat result result-fragment))))))
(defvar-local cider-repl--ns-forms-plist nil
"Plist holding ns->ns-form mappings within each connection.")
(defun cider-repl--ns-form-changed-p (ns-form connection)
"Return non-nil if NS-FORM for CONNECTION changed since last eval."
(when-let* ((ns (cider-ns-from-form ns-form)))
(not (string= ns-form
(lax-plist-get
(buffer-local-value 'cider-repl--ns-forms-plist connection)
ns)))))
(defvar cider-repl--root-ns-highlight-template "\\_<\\(%s\\)[^$/: \t\n()]+"
"Regexp used to highlight root ns in REPL buffers.")
(defvar-local cider-repl--root-ns-regexp nil
"Cache of root ns regexp in REPLs.")
(defvar-local cider-repl--ns-roots nil
"List holding all past root namespaces seen during interactive eval.")
(defun cider-repl--cache-ns-form (ns-form connection)
"Given NS-FORM cache root ns in CONNECTION."
(with-current-buffer connection
(when-let* ((ns (cider-ns-from-form ns-form)))
;; cache ns-form
(setq cider-repl--ns-forms-plist
(lax-plist-put cider-repl--ns-forms-plist ns ns-form))
;; cache ns roots regexp
(when (string-match "\\([^.]+\\)" ns)
(let ((root (match-string-no-properties 1 ns)))
(unless (member root cider-repl--ns-roots)
(push root cider-repl--ns-roots)
(let ((roots (mapconcat
;; Replace _ or - with regexp pattern to accommodate "raw" namespaces
(lambda (r) (replace-regexp-in-string "[_-]+" "[_-]+" r))
cider-repl--ns-roots "\\|")))
(setq cider-repl--root-ns-regexp
(format cider-repl--root-ns-highlight-template roots)))))))))
(defvar cider-repl-spec-keywords-regexp
(concat
(regexp-opt '("In:" " val:"
" at:" "fails at:"
" spec:" "fails spec:"
" predicate:" "fails predicate:"))
"\\|^"
(regexp-opt '(":clojure.spec.alpha/spec"
":clojure.spec.alpha/value")
"\\("))
"Regexp matching clojure.spec `explain` keywords.")
(defun cider-repl-highlight-spec-keywords (string)
"Highlight clojure.spec `explain` keywords in STRING.
Foreground of `clojure-keyword-face' is used for highlight."
(cider-add-face cider-repl-spec-keywords-regexp
'clojure-keyword-face t nil string)
string)
(defun cider-repl-highlight-current-project (string)
"Fontify project's root namespace to make stacktraces more readable.
Foreground of `cider-stacktrace-ns-face' is used to propertize matched
namespaces. STRING is REPL's output."
(cider-add-face cider-repl--root-ns-regexp 'cider-stacktrace-ns-face
t nil string)
string)
(defun cider-repl-add-locref-help-echo (string)
"Set help-echo property of STRING to `cider-locref-help-echo'."
(put-text-property 0 (length string) 'help-echo 'cider-locref-help-echo string)
string)
(defvar cider-repl-preoutput-hook `(,(if (< emacs-major-version 29)
'cider-repl--ansi-color-apply
'ansi-color-apply)
cider-repl-highlight-current-project
cider-repl-highlight-spec-keywords
cider-repl-add-locref-help-echo)
"Hook run on output string before it is inserted into the REPL buffer.
Each functions takes a string and must return a modified string. Also see
`cider-run-chained-hook'.")
(defcustom cider-repl-buffer-size-limit nil
"The max size of the REPL buffer.
Setting this to nil removes the limit."
:group 'cider
:type 'integer
:package-version '(cider . "0.26.0"))
(defun cider-start-of-next-prompt (point)
"Return the position of the first char of the next prompt from POINT."
(let ((next-prompt-or-input (next-single-char-property-change point 'field)))
(if (eq (get-char-property next-prompt-or-input 'field) 'cider-repl-prompt)
next-prompt-or-input
(next-single-char-property-change next-prompt-or-input 'field))))
(defun cider-repl-trim-top-of-buffer (buffer)
"Trims REPL output from beginning of BUFFER.
Trims by one fifth of `cider-repl-buffer-size-limit'.
Also clears remaining partial input or results."
(with-current-buffer buffer
(let* ((to-trim (ceiling (* cider-repl-buffer-size-limit 0.2)))
(start-of-next-prompt (cider-start-of-next-prompt to-trim))
(inhibit-read-only t))
(cider-repl--clear-region (point-min) start-of-next-prompt))))
(defun cider-repl-trim-buffer ()
"Trim the currently visited REPL buffer partially from the top.
See also `cider-repl-clear-buffer'."
(interactive)
(if cider-repl-buffer-size-limit
(cider-repl-trim-top-of-buffer (current-buffer))
(user-error "The variable `cider-repl-buffer-size-limit' is not set")))
(defun cider-repl-maybe-trim-buffer (buffer)
"Clear portion of printed output in BUFFER.
Clear the part where `cider-repl-buffer-size-limit' is exceeded."
(when (> (buffer-size) cider-repl-buffer-size-limit)
(cider-repl-trim-top-of-buffer buffer)))
(defun cider-repl--emit-output (buffer string face)
"Using BUFFER, emit STRING as output font-locked using FACE.
Before inserting, run `cider-repl-preoutput-hook' on STRING."
(with-current-buffer buffer
(save-excursion
(cider-save-marker cider-repl-output-start
(goto-char cider-repl-output-end)
(setq string (propertize string
'font-lock-face face
'rear-nonsticky '(font-lock-face)))
(setq string (cider-run-chained-hook 'cider-repl-preoutput-hook string))
(insert-before-markers string))
(when (and (= (point) cider-repl-prompt-start-mark)
(not (bolp)))
(insert-before-markers "\n")
(set-marker cider-repl-output-end (1- (point))))))
(when cider-repl-display-output-before-window-boundaries
;; FIXME: The code below is super slow, that's why it's disabled by default.
(when-let* ((window (get-buffer-window buffer t)))
;; If the prompt is on the first line of the window, then scroll the window
;; down by a single line to make the emitted output visible.
(when (and (pos-visible-in-window-p cider-repl-prompt-start-mark window)
(< 1 cider-repl-prompt-start-mark)
(not (pos-visible-in-window-p (1- cider-repl-prompt-start-mark) window)))
(with-selected-window window
(scroll-down 1))))))
(defun cider-repl--emit-interactive-output (string face)
"Emit STRING as interactive output using FACE."
(cider-repl--emit-output (cider-current-repl) string face))
(defun cider-repl-emit-interactive-stdout (string)
"Emit STRING as interactive output."
(cider-repl--emit-interactive-output string 'cider-repl-stdout-face))
(defun cider-repl-emit-interactive-stderr (string)
"Emit STRING as interactive err output."
(cider-repl--emit-interactive-output string 'cider-repl-stderr-face))
(defun cider-repl-emit-stdout (buffer string)
"Using BUFFER, emit STRING as standard output."
(cider-repl--emit-output buffer string 'cider-repl-stdout-face))
(defun cider-repl-emit-stderr (buffer string)
"Using BUFFER, emit STRING as error output."
(cider-repl--emit-output buffer string 'cider-repl-stderr-face))
(defun cider-repl-emit-prompt (buffer)
"Emit the REPL prompt into BUFFER."
(with-current-buffer buffer
(save-excursion
(cider-repl--insert-prompt cider-buffer-ns))))
(defun cider-repl-emit-result (buffer string show-prefix &optional bol)
"Emit into BUFFER the result STRING and mark it as an evaluation result.
If SHOW-PREFIX is non-nil insert `cider-repl-result-prefix' at the beginning
of the line. If BOL is non-nil insert at the beginning of the line."
(with-current-buffer buffer
(save-excursion
(cider-save-marker cider-repl-output-start
(goto-char cider-repl-output-end)
(when (and bol (not (bolp)))
(insert-before-markers "\n"))
(when show-prefix
(insert-before-markers (propertize cider-repl-result-prefix 'font-lock-face 'font-lock-comment-face)))
(if cider-repl-use-clojure-font-lock
(insert-before-markers (cider-font-lock-as-clojure string))
(cider-propertize-region
'(font-lock-face cider-repl-result-face rear-nonsticky (font-lock-face))
(insert-before-markers string)))))))
(defun cider-repl-newline-and-indent ()
"Insert a newline, then indent the next line.
Restrict the buffer from the prompt for indentation, to avoid being
confused by strange characters (like unmatched quotes) appearing
earlier in the buffer."
(interactive)
(save-restriction
(narrow-to-region cider-repl-prompt-start-mark (point-max))
(insert "\n")
(lisp-indent-line)))
(defun cider-repl-indent-and-complete-symbol ()
"Indent the current line and perform symbol completion.
First indent the line. If indenting doesn't move point, complete
the symbol."
(interactive)
(let ((pos (point)))
(lisp-indent-line)
(when (= pos (point))
(if (save-excursion (re-search-backward "[^() \n\t\r]+\\=" nil t))
(completion-at-point)))))
(defun cider-repl-kill-input ()
"Kill all text from the prompt to point."
(interactive)
(cond ((< (marker-position cider-repl-input-start-mark) (point))
(kill-region cider-repl-input-start-mark (point)))
((= (point) (marker-position cider-repl-input-start-mark))
(cider-repl-delete-current-input))))
(defun cider-repl--input-complete-p (start end)
"Return t if the region from START to END is a complete sexp."
(save-excursion
(goto-char start)
(cond ((looking-at-p "\\s *[@'`#]?[(\"]")
(ignore-errors
(save-restriction
(narrow-to-region start end)
;; Keep stepping over blanks and sexps until the end of
;; buffer is reached or an error occurs. Tolerate extra
;; close parens.
(cl-loop do (skip-chars-forward " \t\r\n)")
until (eobp)
do (forward-sexp))
t)))
(t t))))
(defun cider-repl--display-image (buffer image &optional show-prefix bol)
"Insert IMAGE into BUFFER at the current point.
For compatibility with the rest of CIDER's REPL machinery, supports
SHOW-PREFIX and BOL."
(with-current-buffer buffer
(save-excursion
(cider-save-marker cider-repl-output-start
(goto-char cider-repl-output-end)
(when (and bol (not (bolp)))
(insert-before-markers "\n"))
(when show-prefix
(insert-before-markers
(propertize cider-repl-result-prefix 'font-lock-face 'font-lock-comment-face)))
;; The below is inlined from `insert-image' and changed to use
;; `insert-before-markers' rather than `insert'
(let ((start (point))
(props (nconc `(display ,image rear-nonsticky (display))
(when (boundp 'image-map)
`(keymap ,image-map)))))
(insert-before-markers " ")
(add-text-properties start (point) props)))))
t)
(defcustom cider-repl-image-margin 10
"Specifies the margin to be applied to images displayed in the REPL.
Either a single number of pixels - interpreted as a symmetric margin, or
pair of numbers `(x . y)' encoding an arbitrary margin."
:type '(choice integer (vector integer integer))
:package-version '(cider . "0.17.0"))
(defun cider-repl--image (data type datap)
"A helper for creating images with CIDER's image options.
DATA is either the path to an image or its base64 coded data. TYPE is a
symbol indicating the image type. DATAP indicates whether the image is the
raw image data or a filename. Returns an image instance with a margin per
`cider-repl-image-margin'."
(create-image data type datap
:margin cider-repl-image-margin))
(defun cider-repl-handle-jpeg (_type buffer image &optional show-prefix bol)
"A handler for inserting a jpeg IMAGE into a repl BUFFER.
Part of the default `cider-repl-content-type-handler-alist'."
(cider-repl--display-image buffer
(cider-repl--image image 'jpeg t)
show-prefix bol))
(defun cider-repl-handle-png (_type buffer image &optional show-prefix bol)
"A handler for inserting a png IMAGE into a repl BUFFER.
Part of the default `cider-repl-content-type-handler-alist'."
(cider-repl--display-image buffer
(cider-repl--image image 'png t)
show-prefix bol))
(defun cider-repl-handle-svg (_type buffer image &optional show-prefix bol)
"A handler for inserting an svg IMAGE into a repl BUFFER.
Part of the default `cider-repl-content-type-handler-alist'."
(cider-repl--display-image buffer
(cider-repl--image image 'svg t)
show-prefix bol))
(defun cider-repl-handle-external-body (type buffer _ &optional _show-prefix _bol)
"Handler for slurping external content into BUFFER.
Handles an external-body TYPE by issuing a slurp request to fetch the content."
(if-let* ((args (cadr type))
(access-type (nrepl-dict-get args "access-type")))
(nrepl-send-request
(list "op" "slurp" "url" (nrepl-dict-get args access-type))
(cider-repl-handler buffer)
(cider-current-repl)))
nil)
(defvar cider-repl-content-type-handler-alist
`(("message/external-body" . ,#'cider-repl-handle-external-body)
("image/jpeg" . ,#'cider-repl-handle-jpeg)
("image/png" . ,#'cider-repl-handle-png)
("image/svg+xml" . ,#'cider-repl-handle-svg))
"Association list from content-types to handlers.
Handlers must be functions of two required and two optional arguments - the
REPL buffer to insert into, the value of the given content type as a raw
string, the REPL's show prefix as any and an `end-of-line' flag.
The return value of the handler should be a flag, indicating whether or not
the REPL is ready for a prompt to be displayed. Most handlers should return
t, as the content-type response is (currently) an alternative to the
value response. However for handlers which themselves issue subsequent
nREPL ops, it may be convenient to prevent inserting a prompt.")
(defun cider--maybe-get-state-cljs ()
"Invokes `cider/get-state' when it's possible to do so."
(when-let ((conn (cider-current-repl 'cljs)))
(when (nrepl-op-supported-p "cider/get-state" conn)
(nrepl-send-request '("op" "cider/get-state")
(lambda (_response)
;; No action is necessary: this request results in `cider-repl--state-handler` being called.
)
conn))))