-/* Copyright (C) 1995,1996,1997, 1999 Free Software Foundation, Inc.
+/* Copyright (C) 1995,1996,1997,1999,2000,2001,2003, 2004, 2006, 2007 Free Software
+ * Foundation, Inc.
*
- * 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 2, 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 software; see the file COPYING. If not, write to
- * the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
- * Boston, MA 02111-1307 USA
- *
- * As a special exception, the Free Software Foundation gives permission
- * for additional uses of the text contained in its release of GUILE.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
*
- * The exception is that, if you link the GUILE library with other files
- * to produce an executable, this does not by itself cause the
- * resulting executable to be covered by the GNU General Public License.
- * Your use of that executable is in no way restricted on account of
- * linking the GUILE library code into it.
- *
- * This exception does not however invalidate any other reasons why
- * the executable file might be covered by the GNU General Public License.
- *
- * This exception applies only to the code released by the
- * Free Software Foundation under the name GUILE. If you copy
- * code from other Free Software Foundation releases into a copy of
- * GUILE, as the General Public License permits, the exception does
- * not apply to the code that you add in this way. To avoid misleading
- * anyone as to the status of such modified files, you must delete
- * this exception notice from them.
+ * This library 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
+ * Lesser General Public License for more details.
*
- * If you write modifications of your own for GUILE, it is your choice
- * whether to permit this exception to apply to your modifications.
- * If you do not wish that, delete this exception notice. */
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
-/* Software engineering face-lift by Greg J. Badros, 11-Dec-1999,
- gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */
\f
#include <stdio.h>
-#include "_scm.h"
-#include "chars.h"
-#include "genio.h"
-#include "eval.h"
-#include "unif.h"
-#include "keywords.h"
-#include "alist.h"
-#include "srcprop.h"
-#include "hashtab.h"
-#include "hash.h"
-
-#include "scm_validate.h"
-#include "read.h"
+#include "libguile/_scm.h"
+#include "libguile/chars.h"
+#include "libguile/eval.h"
+#include "libguile/unif.h"
+#include "libguile/keywords.h"
+#include "libguile/alist.h"
+#include "libguile/srcprop.h"
+#include "libguile/hashtab.h"
+#include "libguile/hash.h"
+#include "libguile/ports.h"
+#include "libguile/root.h"
+#include "libguile/strings.h"
+#include "libguile/strports.h"
+#include "libguile/vectors.h"
+#include "libguile/validate.h"
+#include "libguile/srfi-4.h"
+
+#include "libguile/read.h"
+#include "libguile/private-options.h"
+
\f
+SCM_GLOBAL_SYMBOL (scm_sym_dot, ".");
SCM_SYMBOL (scm_keyword_prefix, "prefix");
-scm_option scm_read_opts[] = {
+scm_t_option scm_read_opts[] = {
{ SCM_OPTION_BOOLEAN, "copy", 0,
"Copy source code expressions." },
{ SCM_OPTION_BOOLEAN, "positions", 0,
"Record positions of source code expressions." },
{ SCM_OPTION_BOOLEAN, "case-insensitive", 0,
"Convert symbols to lower case."},
- { SCM_OPTION_SCM, "keywords", SCM_BOOL_F,
- "Style of keyword recognition: #f or 'prefix"}
+ { SCM_OPTION_SCM, "keywords", SCM_UNPACK (SCM_BOOL_F),
+ "Style of keyword recognition: #f or 'prefix."},
+#if SCM_ENABLE_ELISP
+ { SCM_OPTION_BOOLEAN, "elisp-vectors", 0,
+ "Support Elisp vector syntax, namely `[...]'."},
+ { SCM_OPTION_BOOLEAN, "elisp-strings", 0,
+ "Support `\\(' and `\\)' in strings."},
+#endif
+ { 0, },
};
-GUILE_PROC (scm_read_options, "read-options-interface", 0, 1, 0,
+/*
+ Give meaningful error messages for errors
+
+ We use the format
+
+ FILE:LINE:COL: MESSAGE
+ This happened in ....
+
+ This is not standard GNU format, but the test-suite likes the real
+ message to be in front.
+
+ */
+
+
+void
+scm_i_input_error (char const *function,
+ SCM port, const char *message, SCM arg)
+{
+ SCM fn = (scm_is_string (SCM_FILENAME(port))
+ ? SCM_FILENAME(port)
+ : scm_from_locale_string ("#<unknown port>"));
+
+ SCM string_port = scm_open_output_string ();
+ SCM string = SCM_EOL;
+ scm_simple_format (string_port,
+ scm_from_locale_string ("~A:~S:~S: ~A"),
+ scm_list_4 (fn,
+ scm_from_long (SCM_LINUM (port) + 1),
+ scm_from_int (SCM_COL (port) + 1),
+ scm_from_locale_string (message)));
+
+ string = scm_get_output_string (string_port);
+ scm_close_output_port (string_port);
+ scm_error_scm (scm_from_locale_symbol ("read-error"),
+ function? scm_from_locale_string (function) : SCM_BOOL_F,
+ string,
+ arg,
+ SCM_BOOL_F);
+}
+
+
+SCM_DEFINE (scm_read_options, "read-options-interface", 0, 1, 0,
(SCM setting),
-"")
+ "Option interface for the read options. Instead of using\n"
+ "this procedure directly, use the procedures @code{read-enable},\n"
+ "@code{read-disable}, @code{read-set!} and @code{read-options}.")
#define FUNC_NAME s_scm_read_options
{
SCM ans = scm_options (setting,
scm_read_opts,
- SCM_N_READ_OPTIONS,
FUNC_NAME);
if (SCM_COPY_SOURCE_P)
SCM_RECORD_POSITIONS_P = 1;
/* An association list mapping extra hash characters to procedures. */
static SCM *scm_read_hash_procedures;
-GUILE_PROC (scm_read, "read", 0, 1, 0,
+SCM_DEFINE (scm_read, "read", 0, 1, 0,
(SCM port),
-"")
+ "Read an s-expression from the input port @var{port}, or from\n"
+ "the current input port if @var{port} is not specified.\n"
+ "Any whitespace before the next token is discarded.")
#define FUNC_NAME s_scm_read
{
int c;
SCM tok_buf, copy;
if (SCM_UNBNDP (port))
- port = scm_cur_inp;
- SCM_VALIDATE_OPINPORT(1,port);
+ port = scm_current_input_port ();
+ SCM_VALIDATE_OPINPORT (1, port);
c = scm_flush_ws (port, (char *) NULL);
if (EOF == c)
return SCM_EOF_VAL;
scm_ungetc (c, port);
- tok_buf = scm_makstr (30L, 0);
+ tok_buf = scm_c_make_string (30, SCM_UNDEFINED);
return scm_lreadr (&tok_buf, port, ©);
}
#undef FUNC_NAME
char *
scm_grow_tok_buf (SCM *tok_buf)
{
- scm_vector_set_length_x (*tok_buf, SCM_MAKINUM (2 * SCM_LENGTH (*tok_buf)));
- return SCM_CHARS (*tok_buf);
+ size_t oldlen = scm_i_string_length (*tok_buf);
+ const char *olddata = scm_i_string_chars (*tok_buf);
+ char *newdata;
+ SCM newstr = scm_i_make_string (2 * oldlen, &newdata);
+ size_t i;
+
+ for (i = 0; i != oldlen; ++i)
+ newdata[i] = olddata[i];
+
+ *tok_buf = newstr;
+ return newdata;
}
+/* Consume an SCSH-style block comment. Assume that we've already
+ read the initial `#!', and eat characters until we get a
+ exclamation-point/sharp-sign sequence.
+*/
+static void
+skip_scsh_block_comment (SCM port)
+{
+ int bang_seen = 0;
+
+ for (;;)
+ {
+ int c = scm_getc (port);
+
+ if (c == EOF)
+ scm_i_input_error ("skip_block_comment", port,
+ "unterminated `#! ... !#' comment", SCM_EOL);
+
+ if (c == '!')
+ bang_seen = 1;
+ else if (c == '#' && bang_seen)
+ return;
+ else
+ bang_seen = 0;
+ }
+}
int
scm_flush_ws (SCM port, const char *eoferr)
case EOF:
goteof:
if (eoferr)
- scm_wta (SCM_UNDEFINED, "end of file in ", eoferr);
+ {
+ scm_i_input_error (eoferr,
+ port,
+ "end of file",
+ SCM_EOL);
+ }
return c;
case ';':
lp:
break;
}
break;
+ case '#':
+ switch (c = scm_getc (port))
+ {
+ case EOF:
+ eoferr = "read_sharp";
+ goto goteof;
+ case '!':
+ skip_scsh_block_comment (port);
+ break;
+ default:
+ scm_ungetc (c, port);
+ return '#';
+ }
+ break;
case SCM_LINE_INCREMENTORS:
case SCM_SINGLE_SPACES:
case '\t':
scm_casei_streq (char *s1, char *s2)
{
while (*s1 && *s2)
- if (scm_downcase((int)*s1) != scm_downcase((int)*s2))
+ if (scm_c_downcase((int)*s1) != scm_c_downcase((int)*s2))
return 0;
else
{
return !(*s1 || *s2);
}
+static int
+scm_i_casei_streq (const char *s1, const char *s2, size_t len2)
+{
+ while (*s1 && len2 > 0)
+ if (scm_c_downcase((int)*s1) != scm_c_downcase((int)*s2))
+ return 0;
+ else
+ {
+ ++s1;
+ ++s2;
+ --len2;
+ }
+ return !(*s1 || len2 > 0);
+}
/* recsexpr is used when recording expressions
* constructed by read:sharp.
*/
-#ifndef DEBUG_EXTENSIONS
-#define recsexpr(obj, line, column, filename) (obj)
-#else
static SCM
-recsexpr (SCM obj,int line,int column,SCM filename)
+recsexpr (SCM obj, long line, int column, SCM filename)
{
- if (SCM_IMP (obj) || SCM_NCONSP(obj))
+ if (!scm_is_pair(obj)) {
return obj;
- {
+ } else {
SCM tmp = obj, copy;
/* If this sexpr is visible in the read:sharp source, we want to
keep that information, so only record non-constant cons cells
which haven't previously been read by the reader. */
- if (SCM_FALSEP (scm_whash_lookup (scm_source_whash, obj)))
+ if (scm_is_false (scm_whash_lookup (scm_source_whash, obj)))
{
if (SCM_COPY_SOURCE_P)
{
copy = scm_cons (recsexpr (SCM_CAR (obj), line, column, filename),
SCM_UNDEFINED);
- while (SCM_NIMP (tmp = SCM_CDR (tmp)) && SCM_CONSP (tmp))
+ while ((tmp = SCM_CDR (tmp)) && scm_is_pair (tmp))
{
SCM_SETCDR (copy, scm_cons (recsexpr (SCM_CAR (tmp),
line,
else
{
recsexpr (SCM_CAR (obj), line, column, filename);
- while (SCM_NIMP (tmp = SCM_CDR (tmp)) && SCM_CONSP (tmp))
+ while ((tmp = SCM_CDR (tmp)) && scm_is_pair (tmp))
recsexpr (SCM_CAR (tmp), line, column, filename);
copy = SCM_UNDEFINED;
}
return obj;
}
}
-#endif
-
-/* Consume an SCSH-style block comment. Assume that we've already
- read the initial `#!', and eat characters until we get a
- newline/exclamation-point/sharp-sign/newline sequence. */
-
-static void
-skip_scsh_block_comment (SCM port)
-{
- /* Is this portable? Dear God, spare me from the non-eight-bit
- characters. But is it tasteful? */
- long history = 0;
-
- for (;;)
- {
- int c = scm_getc (port);
-
- if (c == EOF)
- scm_wta (SCM_UNDEFINED,
- "unterminated `#! ... !#' comment", "read");
- history = ((history << 8) | (c & 0xff)) & 0xffffffff;
- /* Were the last four characters read "\n!#\n"? */
- if (history == (('\n' << 24) | ('!' << 16) | ('#' << 8) | '\n'))
- return;
- }
-}
static SCM scm_get_hash_procedure(int c);
+static SCM scm_i_lreadparen (SCM *, SCM, char *, SCM *, char);
static char s_list[]="list";
+#if SCM_ENABLE_ELISP
+static char s_vector[]="vector";
+#endif
SCM
-scm_lreadr (SCM *tok_buf,SCM port,SCM *copy)
+scm_lreadr (SCM *tok_buf, SCM port, SCM *copy)
+#define FUNC_NAME "scm_lreadr"
{
int c;
- scm_sizet j;
+ size_t j;
SCM p;
-tryagain:
+ tryagain:
c = scm_flush_ws (port, s_scm_read);
-tryagain_no_flush_ws:
switch (c)
{
case EOF:
case '(':
return SCM_RECORD_POSITIONS_P
- ? scm_lreadrecparen (tok_buf, port, s_list, copy)
- : scm_lreadparen (tok_buf, port, s_list, copy);
+ ? scm_lreadrecparen (tok_buf, port, s_list, copy)
+ : scm_i_lreadparen (tok_buf, port, s_list, copy, ')');
case ')':
- scm_wta (SCM_UNDEFINED, "unexpected \")\"", "read");
+ scm_i_input_error (FUNC_NAME, port,"unexpected \")\"", SCM_EOL);
goto tryagain;
+#if SCM_ENABLE_ELISP
+ case '[':
+ if (SCM_ELISP_VECTORS_P)
+ {
+ p = scm_i_lreadparen (tok_buf, port, s_vector, copy, ']');
+ return scm_is_null (p) ? scm_nullvect : scm_vector (p);
+ }
+ goto read_token;
+#endif
case '\'':
p = scm_sym_quote;
goto recquote;
return p;
case '#':
c = scm_getc (port);
+
+ {
+ /* Check for user-defined hash procedure first, to allow
+ overriding of builtin hash read syntaxes. */
+ SCM sharp = scm_get_hash_procedure (c);
+ if (scm_is_true (sharp))
+ {
+ long line = SCM_LINUM (port);
+ int column = SCM_COL (port) - 2;
+ SCM got;
+
+ got = scm_call_2 (sharp, SCM_MAKE_CHAR (c), port);
+ if (scm_is_eq (got, SCM_UNSPECIFIED))
+ goto handle_sharp;
+ if (SCM_RECORD_POSITIONS_P)
+ return *copy = recsexpr (got, line, column,
+ SCM_FILENAME (port));
+ else
+ return got;
+ }
+ }
+ handle_sharp:
switch (c)
{
+ /* Vector, arrays, both uniform and not are handled by this
+ one function. It also disambiguates between '#f' and
+ '#f32' and '#f64'.
+ */
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ case 'u': case 's': case 'f':
+ case '@':
case '(':
- p = scm_lreadparen (tok_buf, port, "vector", copy);
- return SCM_NULLP (p) ? scm_nullvect : scm_vector (p);
+#if SCM_ENABLE_DEPRECATED
+ /* See below for 'i' and 'e'. */
+ case 'a':
+ case 'c':
+ case 'y':
+ case 'h':
+ case 'l':
+#endif
+ return scm_i_read_array (port, c);
case 't':
case 'T':
return SCM_BOOL_T;
- case 'f':
+
case 'F':
+ /* See above for lower case 'f'. */
return SCM_BOOL_F;
+
+ case 'i':
+ case 'e':
+#if SCM_ENABLE_DEPRECATED
+ {
+ /* When next char is '(', it really is an old-style
+ uniform array. */
+ int next_c = scm_getc (port);
+ if (next_c != EOF)
+ scm_ungetc (next_c, port);
+ if (next_c == '(')
+ return scm_i_read_array (port, c);
+ /* Fall through. */
+ }
+#endif
case 'b':
case 'B':
case 'o':
case 'D':
case 'x':
case 'X':
- case 'i':
case 'I':
- case 'e':
case 'E':
scm_ungetc (c, port);
c = '#';
goto num;
case '!':
- /* start of a shell script. Parse as a block comment,
- terminated by !#, just like SCSH. */
- skip_scsh_block_comment (port);
- /* EOF is not an error here */
- c = scm_flush_ws (port, (char *)NULL);
- goto tryagain_no_flush_ws;
-
-#ifdef HAVE_ARRAYS
+ /* should never happen, #!...!# block comments are skipped
+ over in scm_flush_ws. */
+ abort ();
+
case '*':
j = scm_read_token (c, tok_buf, port, 0);
- p = scm_istr2bve (SCM_CHARS (*tok_buf) + 1, (long) (j - 1));
- if (SCM_NFALSEP (p))
+ p = scm_istr2bve (scm_c_substring_shared (*tok_buf, 1, j));
+ if (scm_is_true (p))
return p;
else
goto unkshrp;
-#endif
case '{':
j = scm_read_token (c, tok_buf, port, 1);
- p = scm_intern (SCM_CHARS (*tok_buf), j);
- return SCM_CAR (p);
+ return scm_string_to_symbol (scm_c_substring_copy (*tok_buf, 0, j));
case '\\':
c = scm_getc (port);
j = scm_read_token (c, tok_buf, port, 0);
if (j == 1)
- return SCM_MAKICHR (c);
+ return SCM_MAKE_CHAR (c);
if (c >= '0' && c < '8')
{
- p = scm_istr2int (SCM_CHARS (*tok_buf), (long) j, 8);
- if (SCM_NFALSEP (p))
- return SCM_MAKICHR (SCM_INUM (p));
+ /* Dirk:FIXME:: This type of character syntax is not R5RS
+ * compliant. Further, it should be verified that the constant
+ * does only consist of octal digits. Finally, it should be
+ * checked whether the resulting fixnum is in the range of
+ * characters. */
+ p = scm_c_locale_stringn_to_number (scm_i_string_chars (*tok_buf),
+ j, 8);
+ if (SCM_I_INUMP (p))
+ return SCM_MAKE_CHAR (SCM_I_INUM (p));
}
for (c = 0; c < scm_n_charnames; c++)
if (scm_charnames[c]
- && (scm_casei_streq (scm_charnames[c], SCM_CHARS (*tok_buf))))
- return SCM_MAKICHR (scm_charnums[c]);
- scm_wta (SCM_UNDEFINED, "unknown # object: #\\", SCM_CHARS (*tok_buf));
+ && (scm_i_casei_streq (scm_charnames[c],
+ scm_i_string_chars (*tok_buf), j)))
+ return SCM_MAKE_CHAR (scm_charnums[c]);
+ scm_i_input_error (FUNC_NAME, port, "unknown character name ~a",
+ scm_list_1 (scm_c_substring (*tok_buf, 0, j)));
/* #:SYMBOL is a syntax for keywords supported in all contexts. */
case ':':
- j = scm_read_token ('-', tok_buf, port, 0);
- p = scm_intern (SCM_CHARS (*tok_buf), j);
- return scm_make_keyword_from_dash_symbol (SCM_CAR (p));
+ return scm_symbol_to_keyword (scm_read (port));
default:
callshrp:
{
SCM sharp = scm_get_hash_procedure (c);
- if (SCM_NIMP (sharp))
+ if (scm_is_true (sharp))
{
- int line = SCM_LINUM (port);
+ long line = SCM_LINUM (port);
int column = SCM_COL (port) - 2;
SCM got;
- got = scm_apply (sharp,
- SCM_MAKICHR (c),
- scm_acons (port, SCM_EOL, SCM_EOL));
- if (SCM_UNSPECIFIED == got)
+ got = scm_call_2 (sharp, SCM_MAKE_CHAR (c), port);
+ if (scm_is_eq (got, SCM_UNSPECIFIED))
goto unkshrp;
if (SCM_RECORD_POSITIONS_P)
return *copy = recsexpr (got, line, column,
}
}
unkshrp:
- scm_misc_error (s_scm_read, "Unknown # object: %S",
- scm_listify (SCM_MAKICHR (c), SCM_UNDEFINED));
+ scm_i_input_error (FUNC_NAME, port, "Unknown # object: ~S",
+ scm_list_1 (SCM_MAKE_CHAR (c)));
}
case '"':
j = 0;
while ('"' != (c = scm_getc (port)))
{
- SCM_ASSERT (EOF != c, SCM_UNDEFINED, "end of file in ", "string");
+ if (c == EOF)
+ str_eof: scm_i_input_error (FUNC_NAME, port,
+ "end of file in string constant",
+ SCM_EOL);
- while (j + 2 >= SCM_LENGTH (*tok_buf))
+ while (j + 2 >= scm_i_string_length (*tok_buf))
scm_grow_tok_buf (tok_buf);
if (c == '\\')
switch (c = scm_getc (port))
{
+ case EOF:
+ goto str_eof;
+ case '"':
+ case '\\':
+ break;
+#if SCM_ENABLE_ELISP
+ case '(':
+ case ')':
+ if (SCM_ESCAPED_PARENS_P)
+ break;
+ goto bad_escaped;
+#endif
case '\n':
continue;
case '0':
case 'v':
c = '\v';
break;
+ case 'x':
+ {
+ int a, b;
+ a = scm_getc (port);
+ if (a == EOF) goto str_eof;
+ b = scm_getc (port);
+ if (b == EOF) goto str_eof;
+ if ('0' <= a && a <= '9') a -= '0';
+ else if ('A' <= a && a <= 'F') a = a - 'A' + 10;
+ else if ('a' <= a && a <= 'f') a = a - 'a' + 10;
+ else goto bad_escaped;
+ if ('0' <= b && b <= '9') b -= '0';
+ else if ('A' <= b && b <= 'F') b = b - 'A' + 10;
+ else if ('a' <= b && b <= 'f') b = b - 'a' + 10;
+ else goto bad_escaped;
+ c = a * 16 + b;
+ break;
+ }
+ default:
+ bad_escaped:
+ scm_i_input_error(FUNC_NAME, port,
+ "illegal character in escape sequence: ~S",
+ scm_list_1 (SCM_MAKE_CHAR (c)));
}
- SCM_CHARS (*tok_buf)[j] = c;
+ scm_c_string_set_x (*tok_buf, j, SCM_MAKE_CHAR (c));
++j;
}
if (j == 0)
return scm_nullstr;
- SCM_CHARS (*tok_buf)[j] = 0;
- {
- SCM str;
- str = scm_makfromstr (SCM_CHARS (*tok_buf), j, 0);
- return str;
- }
- case'0':case '1':case '2':case '3':case '4':
- case '5':case '6':case '7':case '8':case '9':
+ /* Change this to scm_c_substring_read_only when
+ SCM_STRING_CHARS has been removed.
+ */
+ return scm_c_substring_copy (*tok_buf, 0, j);
+
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
case '.':
case '-':
case '+':
num:
j = scm_read_token (c, tok_buf, port, 0);
- p = scm_istring2number (SCM_CHARS (*tok_buf), (long) j, 10L);
- if (SCM_NFALSEP (p))
+ if (j == 1 && (c == '+' || c == '-'))
+ /* Shortcut: Detected symbol '+ or '- */
+ goto tok;
+
+ p = scm_c_locale_stringn_to_number (scm_i_string_chars (*tok_buf), j, 10);
+ if (scm_is_true (p))
return p;
if (c == '#')
{
if ((j == 2) && (scm_getc (port) == '('))
{
scm_ungetc ('(', port);
- c = SCM_CHARS (*tok_buf)[1];
+ c = scm_i_string_chars (*tok_buf)[1];
goto callshrp;
}
- scm_wta (SCM_UNDEFINED, "unknown # object", SCM_CHARS (*tok_buf));
+ scm_i_input_error (FUNC_NAME, port, "unknown # object", SCM_EOL);
}
goto tok;
case ':':
- if (SCM_KEYWORD_STYLE == scm_keyword_prefix)
- {
- j = scm_read_token ('-', tok_buf, port, 0);
- p = scm_intern (SCM_CHARS (*tok_buf), j);
- return scm_make_keyword_from_dash_symbol (SCM_CAR (p));
- }
+ if (scm_is_eq (SCM_PACK (SCM_KEYWORD_STYLE), scm_keyword_prefix))
+ return scm_symbol_to_keyword (scm_read (port));
+
/* fallthrough */
default:
+#if SCM_ENABLE_ELISP
+ read_token:
+#endif
j = scm_read_token (c, tok_buf, port, 0);
/* fallthrough */
tok:
- p = scm_intern (SCM_CHARS (*tok_buf), j);
- return SCM_CAR (p);
+ return scm_string_to_symbol (scm_c_substring (*tok_buf, 0, j));
}
}
+#undef FUNC_NAME
+
#ifdef _UNICOS
_Pragma ("noopt"); /* # pragma _CRI noopt */
#endif
-scm_sizet
+size_t
scm_read_token (int ic, SCM *tok_buf, SCM port, int weird)
{
- register scm_sizet j;
- register int c;
- register char *p;
-
- c = (SCM_CASE_INSENSITIVE_P ? scm_downcase(ic) : ic);
- p = SCM_CHARS (*tok_buf);
+ size_t j;
+ int c;
+ c = (SCM_CASE_INSENSITIVE_P ? scm_c_downcase(ic) : ic);
+
if (weird)
j = 0;
else
{
j = 0;
- while (j + 2 >= SCM_LENGTH (*tok_buf))
- p = scm_grow_tok_buf (tok_buf);
- p[j] = c;
+ while (j + 2 >= scm_i_string_length (*tok_buf))
+ scm_grow_tok_buf (tok_buf);
+ scm_c_string_set_x (*tok_buf, j, SCM_MAKE_CHAR (c));
++j;
}
while (1)
{
- while (j + 2 >= SCM_LENGTH (*tok_buf))
- p = scm_grow_tok_buf (tok_buf);
+ while (j + 2 >= scm_i_string_length (*tok_buf))
+ scm_grow_tok_buf (tok_buf);
c = scm_getc (port);
switch (c)
{
case '(':
case ')':
+#if SCM_ENABLE_ELISP
+ case '[':
+ case ']':
+#endif
case '"':
case ';':
case SCM_WHITE_SPACES:
case SCM_LINE_INCREMENTORS:
- if (weird)
+ if (weird
+#if SCM_ENABLE_ELISP
+ || ((!SCM_ELISP_VECTORS_P) && ((c == '[') || (c == ']')))
+#endif
+ )
goto default_case;
scm_ungetc (c, port);
case EOF:
eof_case:
- p[j] = 0;
return j;
case '\\':
if (!weird)
c = scm_getc (port);
if (c == '#')
{
- p[j] = 0;
return j;
}
else
default:
default_case:
{
- c = (SCM_CASE_INSENSITIVE_P ? scm_downcase(c) : c);
- p[j] = c;
+ c = (SCM_CASE_INSENSITIVE_P ? scm_c_downcase(c) : c);
+ scm_c_string_set_x (*tok_buf, j, SCM_MAKE_CHAR (c));
++j;
}
_Pragma ("opt"); /* # pragma _CRI opt */
#endif
-SCM
-scm_lreadparen (SCM *tok_buf, SCM port, char *name, SCM *copy)
+static SCM
+scm_i_lreadparen (SCM *tok_buf, SCM port, char *name, SCM *copy, char term_char)
+#define FUNC_NAME "scm_i_lreadparen"
{
SCM tmp;
SCM tl;
int c;
c = scm_flush_ws (port, name);
- if (')' == c)
+ if (term_char == c)
return SCM_EOL;
scm_ungetc (c, port);
- if (scm_sym_dot == (tmp = scm_lreadr (tok_buf, port, copy)))
+ if (scm_is_eq (scm_sym_dot, (tmp = scm_lreadr (tok_buf, port, copy))))
{
ans = scm_lreadr (tok_buf, port, copy);
closeit:
- if (')' != (c = scm_flush_ws (port, name)))
- scm_wta (SCM_UNDEFINED, "missing close paren", "");
+ if (term_char != (c = scm_flush_ws (port, name)))
+ scm_i_input_error (FUNC_NAME, port, "missing close paren", SCM_EOL);
return ans;
}
ans = tl = scm_cons (tmp, SCM_EOL);
- while (')' != (c = scm_flush_ws (port, name)))
+ while (term_char != (c = scm_flush_ws (port, name)))
{
scm_ungetc (c, port);
- if (scm_sym_dot == (tmp = scm_lreadr (tok_buf, port, copy)))
+ if (scm_is_eq (scm_sym_dot, (tmp = scm_lreadr (tok_buf, port, copy))))
{
SCM_SETCDR (tl, scm_lreadr (tok_buf, port, copy));
goto closeit;
}
return ans;
}
+#undef FUNC_NAME
SCM
scm_lreadrecparen (SCM *tok_buf, SCM port, char *name, SCM *copy)
+#define FUNC_NAME "scm_lreadrecparen"
{
register int c;
register SCM tmp;
register SCM tl, tl2 = SCM_EOL;
SCM ans, ans2 = SCM_EOL;
/* Need to capture line and column numbers here. */
- int line = SCM_LINUM (port);
+ long line = SCM_LINUM (port);
int column = SCM_COL (port) - 1;
c = scm_flush_ws (port, name);
if (')' == c)
return SCM_EOL;
scm_ungetc (c, port);
- if (scm_sym_dot == (tmp = scm_lreadr (tok_buf, port, copy)))
+ if (scm_is_eq (scm_sym_dot, (tmp = scm_lreadr (tok_buf, port, copy))))
{
ans = scm_lreadr (tok_buf, port, copy);
if (')' != (c = scm_flush_ws (port, name)))
- scm_wta (SCM_UNDEFINED, "missing close paren", "");
+ scm_i_input_error (FUNC_NAME, port, "missing close paren", SCM_EOL);
return ans;
}
/* Build the head of the list structure. */
ans = tl = scm_cons (tmp, SCM_EOL);
if (SCM_COPY_SOURCE_P)
- ans2 = tl2 = scm_cons (SCM_NIMP (tmp) && SCM_CONSP (tmp)
+ ans2 = tl2 = scm_cons (scm_is_pair (tmp)
? *copy
: tmp,
SCM_EOL);
while (')' != (c = scm_flush_ws (port, name)))
{
+ SCM new_tail;
+
scm_ungetc (c, port);
- if (scm_sym_dot == (tmp = scm_lreadr (tok_buf, port, copy)))
+ if (scm_is_eq (scm_sym_dot, (tmp = scm_lreadr (tok_buf, port, copy))))
{
SCM_SETCDR (tl, tmp = scm_lreadr (tok_buf, port, copy));
if (SCM_COPY_SOURCE_P)
- SCM_SETCDR (tl2, scm_cons (SCM_NIMP (tmp) && SCM_CONSP (tmp)
+ SCM_SETCDR (tl2, scm_cons (scm_is_pair (tmp)
? *copy
: tmp,
SCM_EOL));
if (')' != (c = scm_flush_ws (port, name)))
- scm_wta (SCM_UNDEFINED, "missing close paren", "");
+ scm_i_input_error (FUNC_NAME, port,
+ "missing close paren", SCM_EOL);
goto exit;
}
- tl = SCM_SETCDR (tl, scm_cons (tmp, SCM_EOL));
+
+ new_tail = scm_cons (tmp, SCM_EOL);
+ SCM_SETCDR (tl, new_tail);
+ tl = new_tail;
+
if (SCM_COPY_SOURCE_P)
- tl2 = SCM_SETCDR (tl2, scm_cons (SCM_NIMP (tmp) && SCM_CONSP (tmp)
- ? *copy
- : tmp,
- SCM_EOL));
+ {
+ SCM new_tail2 = scm_cons (scm_is_pair (tmp) ? *copy : tmp, SCM_EOL);
+ SCM_SETCDR (tl2, new_tail2);
+ tl2 = new_tail2;
+ }
}
exit:
scm_whash_insert (scm_source_whash,
SCM_EOL));
return ans;
}
+#undef FUNC_NAME
\f
/* Manipulate the read-hash-procedures alist. This could be written in
Scheme, but maybe it will also be used by C code during initialisation. */
-GUILE_PROC (scm_read_hash_extend, "read-hash-extend", 2, 0, 0,
+SCM_DEFINE (scm_read_hash_extend, "read-hash-extend", 2, 0, 0,
(SCM chr, SCM proc),
-"")
+ "Install the procedure @var{proc} for reading expressions\n"
+ "starting with the character sequence @code{#} and @var{chr}.\n"
+ "@var{proc} will be called with two arguments: the character\n"
+ "@var{chr} and the port to read further data from. The object\n"
+ "returned will be the return value of @code{read}. \n"
+ "Passing @code{#f} for @var{proc} will remove a previous setting. \n"
+ )
#define FUNC_NAME s_scm_read_hash_extend
{
SCM this;
SCM prev;
- SCM_VALIDATE_CHAR(1,chr);
- SCM_ASSERT (SCM_FALSEP (proc) || SCM_NIMP(proc), proc, SCM_ARG2,
- FUNC_NAME);
+ SCM_VALIDATE_CHAR (1, chr);
+ SCM_ASSERT (scm_is_false (proc)
+ || scm_is_eq (scm_procedure_p (proc), SCM_BOOL_T),
+ proc, SCM_ARG2, FUNC_NAME);
/* Check if chr is already in the alist. */
this = *scm_read_hash_procedures;
prev = SCM_BOOL_F;
while (1)
{
- if (SCM_NULLP (this))
+ if (scm_is_null (this))
{
/* not found, so add it to the beginning. */
- if (SCM_NFALSEP (proc))
+ if (scm_is_true (proc))
{
*scm_read_hash_procedures =
scm_cons (scm_cons (chr, proc), *scm_read_hash_procedures);
}
break;
}
- if (chr == SCM_CAAR (this))
+ if (scm_is_eq (chr, SCM_CAAR (this)))
{
/* already in the alist. */
- if (SCM_FALSEP (proc))
+ if (scm_is_false (proc))
{
/* remove it. */
- if (prev == SCM_BOOL_F)
+ if (scm_is_false (prev))
{
*scm_read_hash_procedures =
SCM_CDR (*scm_read_hash_procedures);
while (1)
{
- if (SCM_NULLP (rest))
+ if (scm_is_null (rest))
return SCM_BOOL_F;
- if (SCM_ICHR (SCM_CAAR (rest)) == c)
+ if (SCM_CHAR (SCM_CAAR (rest)) == c)
return SCM_CDAR (rest);
rest = SCM_CDR (rest);
scm_init_read ()
{
scm_read_hash_procedures =
- SCM_CDRLOC (scm_sysintern ("read-hash-procedures", SCM_EOL));
+ SCM_VARIABLE_LOC (scm_c_define ("read-hash-procedures", SCM_EOL));
- scm_init_opts (scm_read_options, scm_read_opts, SCM_N_READ_OPTIONS);
-#include "read.x"
+ scm_init_opts (scm_read_options, scm_read_opts);
+#include "libguile/read.x"
}
+
+/*
+ Local Variables:
+ c-file-style: "gnu"
+ End:
+*/
HCoop / bpt / guile.git / blobdiff