forked from mirrors/org-mode
126 lines
4.7 KiB
EmacsLisp
126 lines
4.7 KiB
EmacsLisp
;;; ob-emacs-lisp.el --- Babel Functions for Emacs-lisp Code -*- lexical-binding: t; -*-
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;; Copyright (C) 2009-2024 Free Software Foundation, Inc.
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;; Author: Eric Schulte
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;; Keywords: literate programming, reproducible research
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;; URL: https://orgmode.org
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Org-Babel support for evaluating emacs-lisp code
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;;; Code:
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(require 'org-macs)
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(org-assert-version)
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(require 'ob-core)
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(declare-function org-babel--get-vars "ob" (params))
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(declare-function org-babel-result-cond "ob" (result-params scalar-form &rest table-forms))
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(declare-function org-babel-reassemble-table "ob" (table colnames rownames))
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(declare-function org-babel-pick-name "ob" (names selector))
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(defconst org-babel-header-args:emacs-lisp '((lexical . :any))
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"Emacs-lisp specific header arguments.")
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(defvar org-babel-default-header-args:emacs-lisp '((:lexical . "no"))
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"Default arguments for evaluating an emacs-lisp source block.
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A value of \"yes\" or t causes source blocks to be eval'd using
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lexical scoping. It can also be an alist mapping symbols to
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their value. It is used both as the optional LEXICAL argument to
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`eval', and as the value for `lexical-binding' in buffers created
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by `org-edit-src-code'.")
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(defun org-babel-expand-body:emacs-lisp (body params)
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"Expand BODY according to PARAMS, return the expanded body."
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(let ((vars (org-babel--get-vars params))
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(print-level nil)
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(print-length nil)
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(prologue (cdr (assq :prologue params)))
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(epilogue (cdr (assq :epilogue params))))
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(if (null vars) (concat body "\n")
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(format "(let (%s)\n%s%s%s\n)"
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(mapconcat
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(lambda (var)
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(format "%S" `(,(car var) ',(cdr var))))
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vars "\n ")
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(if prologue (concat prologue "\n ") "")
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body
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(if epilogue (concat "\n " epilogue "\n") "")))))
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(defun org-babel-execute:emacs-lisp (body params)
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"Execute emacs-lisp code BODY according to PARAMS."
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(let* ((lexical (cdr (assq :lexical params)))
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(session (cdr (assq :session params)))
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(result-params (cdr (assq :result-params params)))
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(body (format (if (member "output" result-params)
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"(with-output-to-string %s\n)"
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"(progn %s\n)")
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(org-babel-expand-body:emacs-lisp body params)))
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(result (eval (read (if (or (member "code" result-params)
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(member "pp" result-params))
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(concat "(pp " body ")")
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body))
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(org-babel-emacs-lisp-lexical lexical))))
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(when (and session (not (equal session "none")))
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(error "ob-emacs-lisp backend does not support sessions"))
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(org-babel-result-cond result-params
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(let ((print-level nil)
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(print-length nil))
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(if (or (member "scalar" result-params)
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(member "verbatim" result-params))
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(format "%S" result)
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(format "%s" result)))
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(org-babel-reassemble-table
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result
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(org-babel-pick-name (cdr (assq :colname-names params))
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(cdr (assq :colnames params)))
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(org-babel-pick-name (cdr (assq :rowname-names params))
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(cdr (assq :rownames params)))))))
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(defun org-babel-emacs-lisp-lexical (lexical)
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"Interpret :lexical source block argument.
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Convert LEXICAL into the form appropriate for `lexical-binding'
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and the LEXICAL argument to `eval'."
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(if (listp lexical)
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lexical
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(not (null (member lexical '("yes" "t"))))))
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(defun org-babel-edit-prep:emacs-lisp (info)
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"Set `lexical-binding' in Org edit buffer.
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Set `lexical-binding' in Org edit buffer according to the
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corresponding :lexical source block argument provide in the INFO
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channel, as returned by `org-babel-get-src-block-info'."
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(setq lexical-binding
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(org-babel-emacs-lisp-lexical
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(org-babel-read
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(cdr (assq :lexical (nth 2 info)))))))
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(defun org-babel-prep-session:emacs-lisp (_session _params)
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"Return an error because we do not support sessions."
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(error "ob-emacs-lisp backend does not support sessions"))
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(org-babel-make-language-alias "elisp" "emacs-lisp")
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(provide 'ob-emacs-lisp)
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;;; ob-emacs-lisp.el ends here
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