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Revert "Revert part of 59732a83c8 to fix bug#52969"
This reverts commit 460f35e96d.
Re-remove the code that scans .el files for docstrings, now
that even `lisp/loaddefs.el` is compiled.
* lib-src/make-docfile.c (scan_file): Don't call `scan_lisp_file`.
(scan_lisp_file, skip_white, read_lisp_symbol, search_lisp_doc_at_eol):
Delete functions.
This commit is contained in:
Stefan Monnier
parent
eb2f394289
commit
9e9b0e13bc
1 changed files with 3 additions and 357 deletions
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@ -19,8 +19,8 @@ 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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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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/* The arguments given to this program are all the C and some Lisp source files
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/* The arguments given to this program are all the C files
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of GNU Emacs. .el and .c files are allowed.
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of GNU Emacs. .c files are allowed.
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A .o file can also be specified; the .c file it was made from is used.
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A .o file can also be specified; the .c file it was made from is used.
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This helps the makefile pass the correct list of files.
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This helps the makefile pass the correct list of files.
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Option -d DIR means change to DIR before looking for files.
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Option -d DIR means change to DIR before looking for files.
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@ -66,7 +66,6 @@ along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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#endif /* not DOS_NT */
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#endif /* not DOS_NT */
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static void scan_file (char *filename);
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static void scan_file (char *filename);
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static void scan_lisp_file (const char *filename, const char *mode);
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static void scan_c_file (char *filename, const char *mode);
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static void scan_c_file (char *filename, const char *mode);
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static void scan_c_stream (FILE *infile);
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static void scan_c_stream (FILE *infile);
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static void start_globals (void);
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static void start_globals (void);
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@ -236,14 +235,9 @@ put_filename (char *filename)
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static void
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static void
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scan_file (char *filename)
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scan_file (char *filename)
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{
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{
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ptrdiff_t len = strlen (filename);
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if (!generate_globals)
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if (!generate_globals)
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put_filename (filename);
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put_filename (filename);
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if (len > 3 && !strcmp (filename + len - 3, ".el"))
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scan_c_file (filename, "r");
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scan_lisp_file (filename, "r");
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else
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scan_c_file (filename, "r");
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}
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}
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static void
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static void
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@ -1221,352 +1215,4 @@ scan_c_stream (FILE *infile)
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fatal ("read error");
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fatal ("read error");
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}
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}
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/* Read a file of Lisp source code.
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Looks for
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(defun NAME ARGS DOCSTRING ...)
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(defmacro NAME ARGS DOCSTRING ...)
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(defsubst NAME ARGS DOCSTRING ...)
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(autoload (quote NAME) FILE DOCSTRING ...)
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(defvar NAME VALUE DOCSTRING)
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(defconst NAME VALUE DOCSTRING)
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(fset (quote NAME) (make-byte-code ... DOCSTRING ...))
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(fset (quote NAME) #[... DOCSTRING ...])
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(defalias (quote NAME) #[... DOCSTRING ...])
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(custom-declare-variable (quote NAME) VALUE DOCSTRING ...)
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starting in column zero.
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(quote NAME) may appear as 'NAME as well.
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We also look for #@LENGTH CONTENTS^_ at the beginning of the line.
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When we find that, we save it for the following defining-form,
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and we use that instead of reading a doc string within that defining-form.
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For defvar, defconst, and fset we skip to the docstring with a kludgy
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formatting convention: all docstrings must appear on the same line as the
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initial open-paren (the one in column zero) and must contain a backslash
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and a newline immediately after the initial double-quote. No newlines
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must appear between the beginning of the form and the first double-quote.
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For defun, defmacro, and autoload, we know how to skip over the
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arglist, but the doc string must still have a backslash and newline
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immediately after the double quote.
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The only source files that follow this convention are autoload-generated
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files like loaddefs.el;
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The NAME and DOCSTRING are output.
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NAME is preceded by `F' for a function or `V' for a variable.
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An entry is output only if DOCSTRING has \ newline just after the opening ".
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*/
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static void
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skip_white (FILE *infile)
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{
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int c;
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do
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c = getc (infile);
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while (c_isspace (c));
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ungetc (c, infile);
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}
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static void
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read_lisp_symbol (FILE *infile, char *buffer)
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{
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int c;
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char *fillp = buffer;
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skip_white (infile);
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while (true)
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{
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c = getc (infile);
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if (c == '\\')
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{
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c = getc (infile);
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if (c < 0)
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return;
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*fillp++ = c;
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}
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else if (c_isspace (c) || c == '(' || c == ')' || c < 0)
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{
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ungetc (c, infile);
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*fillp = 0;
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break;
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}
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else
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*fillp++ = c;
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}
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if (! buffer[0])
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fprintf (stderr, "## expected a symbol, got '%c'\n", c);
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skip_white (infile);
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}
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static bool
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search_lisp_doc_at_eol (FILE *infile)
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{
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int c = 0, c1 = 0, c2 = 0;
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/* Skip until the end of line; remember two previous chars. */
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while (c != '\n' && c != '\r' && c != EOF)
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{
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c2 = c1;
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c1 = c;
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c = getc (infile);
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}
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/* If two previous characters were " and \,
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this is a doc string. Otherwise, there is none. */
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if (c2 != '"' || c1 != '\\')
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{
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#ifdef DEBUG
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fprintf (stderr, "## non-docstring found\n");
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#endif
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ungetc (c, infile);
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return false;
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}
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return true;
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}
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static void
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scan_lisp_file (const char *filename, const char *mode)
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{
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FILE *infile;
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int c;
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if (generate_globals)
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fatal ("scanning lisp file when -g specified");
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infile = fopen (filename, mode);
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if (infile == NULL)
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{
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perror (filename);
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exit (EXIT_FAILURE);
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}
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c = '\n';
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while (!feof (infile))
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{
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char buffer[BUFSIZ];
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char type;
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/* If not at end of line, skip till we get to one. */
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if (c != '\n' && c != '\r')
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{
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c = getc (infile);
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continue;
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}
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/* Skip the line break. */
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while (c == '\n' || c == '\r')
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c = getc (infile);
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if (c != '(')
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continue;
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read_lisp_symbol (infile, buffer);
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if (! strcmp (buffer, "defun")
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|| ! strcmp (buffer, "defmacro")
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|| ! strcmp (buffer, "defsubst"))
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{
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type = 'F';
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read_lisp_symbol (infile, buffer);
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/* Skip the arguments: either "nil" or a list in parens. */
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c = getc (infile);
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if (c == 'n') /* nil */
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{
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if ((c = getc (infile)) != 'i'
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|| (c = getc (infile)) != 'l')
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{
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fprintf (stderr, "## unparsable arglist in %s (%s)\n",
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buffer, filename);
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continue;
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}
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}
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else if (c != '(')
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{
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fprintf (stderr, "## unparsable arglist in %s (%s)\n",
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buffer, filename);
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continue;
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}
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else
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while (! (c == ')' || c < 0))
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c = getc (infile);
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skip_white (infile);
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/* If the next three characters aren't `dquote bslash newline'
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then we're not reading a docstring.
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*/
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if ((c = getc (infile)) != '"'
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|| (c = getc (infile)) != '\\'
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|| ((c = getc (infile)) != '\n' && c != '\r'))
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{
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#ifdef DEBUG
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fprintf (stderr, "## non-docstring in %s (%s)\n",
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buffer, filename);
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#endif
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continue;
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}
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}
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else if (! strcmp (buffer, "defvar")
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|| ! strcmp (buffer, "defconst")
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|| ! strcmp (buffer, "defcustom"))
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{
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type = 'V';
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read_lisp_symbol (infile, buffer);
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if (!search_lisp_doc_at_eol (infile))
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continue;
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}
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else if (! strcmp (buffer, "custom-declare-variable")
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|| ! strcmp (buffer, "defvaralias")
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)
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{
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type = 'V';
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c = getc (infile);
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if (c == '\'')
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read_lisp_symbol (infile, buffer);
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else
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{
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if (c != '(')
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{
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fprintf (stderr,
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"## unparsable name in custom-declare-variable in %s\n",
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filename);
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continue;
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}
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read_lisp_symbol (infile, buffer);
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if (strcmp (buffer, "quote"))
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{
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fprintf (stderr,
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"## unparsable name in custom-declare-variable in %s\n",
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filename);
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continue;
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}
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read_lisp_symbol (infile, buffer);
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c = getc (infile);
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if (c != ')')
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{
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fprintf (stderr,
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"## unparsable quoted name in custom-declare-variable in %s\n",
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filename);
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continue;
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}
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}
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if (!search_lisp_doc_at_eol (infile))
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continue;
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}
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else if (! strcmp (buffer, "fset") || ! strcmp (buffer, "defalias"))
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{
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type = 'F';
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c = getc (infile);
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if (c == '\'')
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read_lisp_symbol (infile, buffer);
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else
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{
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if (c != '(')
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{
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fprintf (stderr, "## unparsable name in fset in %s\n",
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filename);
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continue;
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}
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read_lisp_symbol (infile, buffer);
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if (strcmp (buffer, "quote"))
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{
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fprintf (stderr, "## unparsable name in fset in %s\n",
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filename);
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continue;
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}
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read_lisp_symbol (infile, buffer);
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c = getc (infile);
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if (c != ')')
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{
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fprintf (stderr,
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"## unparsable quoted name in fset in %s\n",
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filename);
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continue;
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}
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}
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if (!search_lisp_doc_at_eol (infile))
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continue;
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}
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else if (! strcmp (buffer, "autoload"))
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{
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type = 'F';
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c = getc (infile);
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if (c == '\'')
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read_lisp_symbol (infile, buffer);
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else
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{
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if (c != '(')
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{
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fprintf (stderr, "## unparsable name in autoload in %s\n",
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filename);
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continue;
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}
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read_lisp_symbol (infile, buffer);
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if (strcmp (buffer, "quote"))
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{
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fprintf (stderr, "## unparsable name in autoload in %s\n",
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filename);
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continue;
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}
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read_lisp_symbol (infile, buffer);
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c = getc (infile);
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if (c != ')')
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{
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fprintf (stderr,
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"## unparsable quoted name in autoload in %s\n",
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filename);
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continue;
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}
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}
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skip_white (infile);
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c = getc (infile);
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if (c != '\"')
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{
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fprintf (stderr, "## autoload of %s unparsable (%s)\n",
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buffer, filename);
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continue;
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}
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read_c_string_or_comment (infile, 0, false, 0);
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if (!search_lisp_doc_at_eol (infile))
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continue;
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}
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#ifdef DEBUG
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else if (! strcmp (buffer, "if")
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|| ! strcmp (buffer, "byte-code"))
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continue;
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#endif
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else
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{
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#ifdef DEBUG
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fprintf (stderr, "## unrecognized top-level form, %s (%s)\n",
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buffer, filename);
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#endif
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continue;
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}
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/* At this point, we should gobble a doc string from the input file.
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The opening quote (and leading backslash-newline)
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have already been read. */
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printf ("\037%c%s\n", type, buffer);
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read_c_string_or_comment (infile, 1, false, 0);
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}
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if (ferror (infile) || fclose (infile) != 0)
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fatal ("%s: read error", filename);
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}
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/* make-docfile.c ends here */
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/* make-docfile.c ends here */
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