/* Scheme/Guile language support routines for GDB, the GNU debugger.
|
/* Scheme/Guile language support routines for GDB, the GNU debugger.
|
Copyright 1995 Free Software Foundation, Inc.
|
Copyright 1995 Free Software Foundation, Inc.
|
|
|
This file is part of GDB.
|
This file is part of GDB.
|
|
|
This program is free software; you can redistribute it and/or modify
|
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
|
it under the terms of the GNU General Public License as published by
|
the Free Software Foundation; either version 2 of the License, or
|
the Free Software Foundation; either version 2 of the License, or
|
(at your option) any later version.
|
(at your option) any later version.
|
|
|
This program is distributed in the hope that it will be useful,
|
This program is distributed in the hope that it will be useful,
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
GNU General Public License for more details.
|
GNU General Public License for more details.
|
|
|
You should have received a copy of the GNU General Public License
|
You should have received a copy of the GNU General Public License
|
along with this program; if not, write to the Free Software
|
along with this program; if not, write to the Free Software
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
Boston, MA 02111-1307, USA. */
|
Boston, MA 02111-1307, USA. */
|
|
|
#include "defs.h"
|
#include "defs.h"
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#include "symtab.h"
|
#include "symtab.h"
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#include "gdbtypes.h"
|
#include "gdbtypes.h"
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#include "expression.h"
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#include "expression.h"
|
#include "parser-defs.h"
|
#include "parser-defs.h"
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#include "language.h"
|
#include "language.h"
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#include "value.h"
|
#include "value.h"
|
#include "c-lang.h"
|
#include "c-lang.h"
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#include "scm-lang.h"
|
#include "scm-lang.h"
|
#include "scm-tags.h"
|
#include "scm-tags.h"
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|
|
#define USE_EXPRSTRING 0
|
#define USE_EXPRSTRING 0
|
|
|
static void scm_lreadparen PARAMS ((int));
|
static void scm_lreadparen PARAMS ((int));
|
static int scm_skip_ws PARAMS ((void));
|
static int scm_skip_ws PARAMS ((void));
|
static void scm_read_token PARAMS ((int, int));
|
static void scm_read_token PARAMS ((int, int));
|
static LONGEST scm_istring2number PARAMS ((char *, int, int));
|
static LONGEST scm_istring2number PARAMS ((char *, int, int));
|
static LONGEST scm_istr2int PARAMS ((char *, int, int));
|
static LONGEST scm_istr2int PARAMS ((char *, int, int));
|
static void scm_lreadr PARAMS ((int));
|
static void scm_lreadr PARAMS ((int));
|
|
|
static LONGEST
|
static LONGEST
|
scm_istr2int (str, len, radix)
|
scm_istr2int (str, len, radix)
|
char *str;
|
char *str;
|
int len;
|
int len;
|
int radix;
|
int radix;
|
{
|
{
|
int i = 0;
|
int i = 0;
|
LONGEST inum = 0;
|
LONGEST inum = 0;
|
int c;
|
int c;
|
int sign = 0;
|
int sign = 0;
|
|
|
if (0 >= len)
|
if (0 >= len)
|
return SCM_BOOL_F; /* zero scm_length */
|
return SCM_BOOL_F; /* zero scm_length */
|
switch (str[0])
|
switch (str[0])
|
{ /* leading sign */
|
{ /* leading sign */
|
case '-':
|
case '-':
|
case '+':
|
case '+':
|
sign = str[0];
|
sign = str[0];
|
if (++i == len)
|
if (++i == len)
|
return SCM_BOOL_F; /* bad if lone `+' or `-' */
|
return SCM_BOOL_F; /* bad if lone `+' or `-' */
|
}
|
}
|
do
|
do
|
{
|
{
|
switch (c = str[i++])
|
switch (c = str[i++])
|
{
|
{
|
case '0':
|
case '0':
|
case '1':
|
case '1':
|
case '2':
|
case '2':
|
case '3':
|
case '3':
|
case '4':
|
case '4':
|
case '5':
|
case '5':
|
case '6':
|
case '6':
|
case '7':
|
case '7':
|
case '8':
|
case '8':
|
case '9':
|
case '9':
|
c = c - '0';
|
c = c - '0';
|
goto accumulate;
|
goto accumulate;
|
case 'A':
|
case 'A':
|
case 'B':
|
case 'B':
|
case 'C':
|
case 'C':
|
case 'D':
|
case 'D':
|
case 'E':
|
case 'E':
|
case 'F':
|
case 'F':
|
c = c - 'A' + 10;
|
c = c - 'A' + 10;
|
goto accumulate;
|
goto accumulate;
|
case 'a':
|
case 'a':
|
case 'b':
|
case 'b':
|
case 'c':
|
case 'c':
|
case 'd':
|
case 'd':
|
case 'e':
|
case 'e':
|
case 'f':
|
case 'f':
|
c = c - 'a' + 10;
|
c = c - 'a' + 10;
|
accumulate:
|
accumulate:
|
if (c >= radix)
|
if (c >= radix)
|
return SCM_BOOL_F; /* bad digit for radix */
|
return SCM_BOOL_F; /* bad digit for radix */
|
inum *= radix;
|
inum *= radix;
|
inum += c;
|
inum += c;
|
break;
|
break;
|
default:
|
default:
|
return SCM_BOOL_F; /* not a digit */
|
return SCM_BOOL_F; /* not a digit */
|
}
|
}
|
}
|
}
|
while (i < len);
|
while (i < len);
|
if (sign == '-')
|
if (sign == '-')
|
inum = -inum;
|
inum = -inum;
|
return SCM_MAKINUM (inum);
|
return SCM_MAKINUM (inum);
|
}
|
}
|
|
|
static LONGEST
|
static LONGEST
|
scm_istring2number (str, len, radix)
|
scm_istring2number (str, len, radix)
|
char *str;
|
char *str;
|
int len;
|
int len;
|
int radix;
|
int radix;
|
{
|
{
|
int i = 0;
|
int i = 0;
|
char ex = 0;
|
char ex = 0;
|
char ex_p = 0, rx_p = 0; /* Only allow 1 exactness and 1 radix prefix */
|
char ex_p = 0, rx_p = 0; /* Only allow 1 exactness and 1 radix prefix */
|
#if 0
|
#if 0
|
SCM res;
|
SCM res;
|
#endif
|
#endif
|
if (len == 1)
|
if (len == 1)
|
if (*str == '+' || *str == '-') /* Catches lone `+' and `-' for speed */
|
if (*str == '+' || *str == '-') /* Catches lone `+' and `-' for speed */
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
|
|
while ((len - i) >= 2 && str[i] == '#' && ++i)
|
while ((len - i) >= 2 && str[i] == '#' && ++i)
|
switch (str[i++])
|
switch (str[i++])
|
{
|
{
|
case 'b':
|
case 'b':
|
case 'B':
|
case 'B':
|
if (rx_p++)
|
if (rx_p++)
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
radix = 2;
|
radix = 2;
|
break;
|
break;
|
case 'o':
|
case 'o':
|
case 'O':
|
case 'O':
|
if (rx_p++)
|
if (rx_p++)
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
radix = 8;
|
radix = 8;
|
break;
|
break;
|
case 'd':
|
case 'd':
|
case 'D':
|
case 'D':
|
if (rx_p++)
|
if (rx_p++)
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
radix = 10;
|
radix = 10;
|
break;
|
break;
|
case 'x':
|
case 'x':
|
case 'X':
|
case 'X':
|
if (rx_p++)
|
if (rx_p++)
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
radix = 16;
|
radix = 16;
|
break;
|
break;
|
case 'i':
|
case 'i':
|
case 'I':
|
case 'I':
|
if (ex_p++)
|
if (ex_p++)
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
ex = 2;
|
ex = 2;
|
break;
|
break;
|
case 'e':
|
case 'e':
|
case 'E':
|
case 'E':
|
if (ex_p++)
|
if (ex_p++)
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
ex = 1;
|
ex = 1;
|
break;
|
break;
|
default:
|
default:
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
}
|
}
|
|
|
switch (ex)
|
switch (ex)
|
{
|
{
|
case 1:
|
case 1:
|
return scm_istr2int (&str[i], len - i, radix);
|
return scm_istr2int (&str[i], len - i, radix);
|
case 0:
|
case 0:
|
return scm_istr2int (&str[i], len - i, radix);
|
return scm_istr2int (&str[i], len - i, radix);
|
#if 0
|
#if 0
|
if NFALSEP
|
if NFALSEP
|
(res) return res;
|
(res) return res;
|
#ifdef FLOATS
|
#ifdef FLOATS
|
case 2:
|
case 2:
|
return scm_istr2flo (&str[i], len - i, radix);
|
return scm_istr2flo (&str[i], len - i, radix);
|
#endif
|
#endif
|
#endif
|
#endif
|
}
|
}
|
return SCM_BOOL_F;
|
return SCM_BOOL_F;
|
}
|
}
|
|
|
static void
|
static void
|
scm_read_token (c, weird)
|
scm_read_token (c, weird)
|
int c;
|
int c;
|
int weird;
|
int weird;
|
{
|
{
|
while (1)
|
while (1)
|
{
|
{
|
c = *lexptr++;
|
c = *lexptr++;
|
switch (c)
|
switch (c)
|
{
|
{
|
case '[':
|
case '[':
|
case ']':
|
case ']':
|
case '(':
|
case '(':
|
case ')':
|
case ')':
|
case '\"':
|
case '\"':
|
case ';':
|
case ';':
|
case ' ':
|
case ' ':
|
case '\t':
|
case '\t':
|
case '\r':
|
case '\r':
|
case '\f':
|
case '\f':
|
case '\n':
|
case '\n':
|
if (weird)
|
if (weird)
|
goto default_case;
|
goto default_case;
|
case '\0': /* End of line */
|
case '\0': /* End of line */
|
eof_case:
|
eof_case:
|
--lexptr;
|
--lexptr;
|
return;
|
return;
|
case '\\':
|
case '\\':
|
if (!weird)
|
if (!weird)
|
goto default_case;
|
goto default_case;
|
else
|
else
|
{
|
{
|
c = *lexptr++;
|
c = *lexptr++;
|
if (c == '\0')
|
if (c == '\0')
|
goto eof_case;
|
goto eof_case;
|
else
|
else
|
goto default_case;
|
goto default_case;
|
}
|
}
|
case '}':
|
case '}':
|
if (!weird)
|
if (!weird)
|
goto default_case;
|
goto default_case;
|
|
|
c = *lexptr++;
|
c = *lexptr++;
|
if (c == '#')
|
if (c == '#')
|
return;
|
return;
|
else
|
else
|
{
|
{
|
--lexptr;
|
--lexptr;
|
c = '}';
|
c = '}';
|
goto default_case;
|
goto default_case;
|
}
|
}
|
|
|
default:
|
default:
|
default_case:
|
default_case:
|
;
|
;
|
}
|
}
|
}
|
}
|
}
|
}
|
|
|
static int
|
static int
|
scm_skip_ws ()
|
scm_skip_ws ()
|
{
|
{
|
register int c;
|
register int c;
|
while (1)
|
while (1)
|
switch ((c = *lexptr++))
|
switch ((c = *lexptr++))
|
{
|
{
|
case '\0':
|
case '\0':
|
goteof:
|
goteof:
|
return c;
|
return c;
|
case ';':
|
case ';':
|
lp:
|
lp:
|
switch ((c = *lexptr++))
|
switch ((c = *lexptr++))
|
{
|
{
|
case '\0':
|
case '\0':
|
goto goteof;
|
goto goteof;
|
default:
|
default:
|
goto lp;
|
goto lp;
|
case '\n':
|
case '\n':
|
break;
|
break;
|
}
|
}
|
case ' ':
|
case ' ':
|
case '\t':
|
case '\t':
|
case '\r':
|
case '\r':
|
case '\f':
|
case '\f':
|
case '\n':
|
case '\n':
|
break;
|
break;
|
default:
|
default:
|
return c;
|
return c;
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
scm_lreadparen (skipping)
|
scm_lreadparen (skipping)
|
int skipping;
|
int skipping;
|
{
|
{
|
for (;;)
|
for (;;)
|
{
|
{
|
int c = scm_skip_ws ();
|
int c = scm_skip_ws ();
|
if (')' == c || ']' == c)
|
if (')' == c || ']' == c)
|
return;
|
return;
|
--lexptr;
|
--lexptr;
|
if (c == '\0')
|
if (c == '\0')
|
error ("missing close paren");
|
error ("missing close paren");
|
scm_lreadr (skipping);
|
scm_lreadr (skipping);
|
}
|
}
|
}
|
}
|
|
|
static void
|
static void
|
scm_lreadr (skipping)
|
scm_lreadr (skipping)
|
int skipping;
|
int skipping;
|
{
|
{
|
int c, j;
|
int c, j;
|
struct stoken str;
|
struct stoken str;
|
LONGEST svalue = 0;
|
LONGEST svalue = 0;
|
tryagain:
|
tryagain:
|
c = *lexptr++;
|
c = *lexptr++;
|
switch (c)
|
switch (c)
|
{
|
{
|
case '\0':
|
case '\0':
|
lexptr--;
|
lexptr--;
|
return;
|
return;
|
case '[':
|
case '[':
|
case '(':
|
case '(':
|
scm_lreadparen (skipping);
|
scm_lreadparen (skipping);
|
return;
|
return;
|
case ']':
|
case ']':
|
case ')':
|
case ')':
|
error ("unexpected #\\%c", c);
|
error ("unexpected #\\%c", c);
|
goto tryagain;
|
goto tryagain;
|
case '\'':
|
case '\'':
|
case '`':
|
case '`':
|
str.ptr = lexptr - 1;
|
str.ptr = lexptr - 1;
|
scm_lreadr (skipping);
|
scm_lreadr (skipping);
|
if (!skipping)
|
if (!skipping)
|
{
|
{
|
value_ptr val = scm_evaluate_string (str.ptr, lexptr - str.ptr);
|
value_ptr val = scm_evaluate_string (str.ptr, lexptr - str.ptr);
|
if (!is_scmvalue_type (VALUE_TYPE (val)))
|
if (!is_scmvalue_type (VALUE_TYPE (val)))
|
error ("quoted scm form yields non-SCM value");
|
error ("quoted scm form yields non-SCM value");
|
svalue = extract_signed_integer (VALUE_CONTENTS (val),
|
svalue = extract_signed_integer (VALUE_CONTENTS (val),
|
TYPE_LENGTH (VALUE_TYPE (val)));
|
TYPE_LENGTH (VALUE_TYPE (val)));
|
goto handle_immediate;
|
goto handle_immediate;
|
}
|
}
|
return;
|
return;
|
case ',':
|
case ',':
|
c = *lexptr++;
|
c = *lexptr++;
|
if ('@' != c)
|
if ('@' != c)
|
lexptr--;
|
lexptr--;
|
scm_lreadr (skipping);
|
scm_lreadr (skipping);
|
return;
|
return;
|
case '#':
|
case '#':
|
c = *lexptr++;
|
c = *lexptr++;
|
switch (c)
|
switch (c)
|
{
|
{
|
case '[':
|
case '[':
|
case '(':
|
case '(':
|
scm_lreadparen (skipping);
|
scm_lreadparen (skipping);
|
return;
|
return;
|
case 't':
|
case 't':
|
case 'T':
|
case 'T':
|
svalue = SCM_BOOL_T;
|
svalue = SCM_BOOL_T;
|
goto handle_immediate;
|
goto handle_immediate;
|
case 'f':
|
case 'f':
|
case 'F':
|
case 'F':
|
svalue = SCM_BOOL_F;
|
svalue = SCM_BOOL_F;
|
goto handle_immediate;
|
goto handle_immediate;
|
case 'b':
|
case 'b':
|
case 'B':
|
case 'B':
|
case 'o':
|
case 'o':
|
case 'O':
|
case 'O':
|
case 'd':
|
case 'd':
|
case 'D':
|
case 'D':
|
case 'x':
|
case 'x':
|
case 'X':
|
case 'X':
|
case 'i':
|
case 'i':
|
case 'I':
|
case 'I':
|
case 'e':
|
case 'e':
|
case 'E':
|
case 'E':
|
lexptr--;
|
lexptr--;
|
c = '#';
|
c = '#';
|
goto num;
|
goto num;
|
case '*': /* bitvector */
|
case '*': /* bitvector */
|
scm_read_token (c, 0);
|
scm_read_token (c, 0);
|
return;
|
return;
|
case '{':
|
case '{':
|
scm_read_token (c, 1);
|
scm_read_token (c, 1);
|
return;
|
return;
|
case '\\': /* character */
|
case '\\': /* character */
|
c = *lexptr++;
|
c = *lexptr++;
|
scm_read_token (c, 0);
|
scm_read_token (c, 0);
|
return;
|
return;
|
case '|':
|
case '|':
|
j = 1; /* here j is the comment nesting depth */
|
j = 1; /* here j is the comment nesting depth */
|
lp:
|
lp:
|
c = *lexptr++;
|
c = *lexptr++;
|
lpc:
|
lpc:
|
switch (c)
|
switch (c)
|
{
|
{
|
case '\0':
|
case '\0':
|
error ("unbalanced comment");
|
error ("unbalanced comment");
|
default:
|
default:
|
goto lp;
|
goto lp;
|
case '|':
|
case '|':
|
if ('#' != (c = *lexptr++))
|
if ('#' != (c = *lexptr++))
|
goto lpc;
|
goto lpc;
|
if (--j)
|
if (--j)
|
goto lp;
|
goto lp;
|
break;
|
break;
|
case '#':
|
case '#':
|
if ('|' != (c = *lexptr++))
|
if ('|' != (c = *lexptr++))
|
goto lpc;
|
goto lpc;
|
++j;
|
++j;
|
goto lp;
|
goto lp;
|
}
|
}
|
goto tryagain;
|
goto tryagain;
|
case '.':
|
case '.':
|
default:
|
default:
|
#if 0
|
#if 0
|
callshrp:
|
callshrp:
|
#endif
|
#endif
|
scm_lreadr (skipping);
|
scm_lreadr (skipping);
|
return;
|
return;
|
}
|
}
|
case '\"':
|
case '\"':
|
while ('\"' != (c = *lexptr++))
|
while ('\"' != (c = *lexptr++))
|
{
|
{
|
if (c == '\\')
|
if (c == '\\')
|
switch (c = *lexptr++)
|
switch (c = *lexptr++)
|
{
|
{
|
case '\0':
|
case '\0':
|
error ("non-terminated string literal");
|
error ("non-terminated string literal");
|
case '\n':
|
case '\n':
|
continue;
|
continue;
|
case '0':
|
case '0':
|
case 'f':
|
case 'f':
|
case 'n':
|
case 'n':
|
case 'r':
|
case 'r':
|
case 't':
|
case 't':
|
case 'a':
|
case 'a':
|
case 'v':
|
case 'v':
|
break;
|
break;
|
}
|
}
|
}
|
}
|
return;
|
return;
|
case '0':
|
case '0':
|
case '1':
|
case '1':
|
case '2':
|
case '2':
|
case '3':
|
case '3':
|
case '4':
|
case '4':
|
case '5':
|
case '5':
|
case '6':
|
case '6':
|
case '7':
|
case '7':
|
case '8':
|
case '8':
|
case '9':
|
case '9':
|
case '.':
|
case '.':
|
case '-':
|
case '-':
|
case '+':
|
case '+':
|
num:
|
num:
|
{
|
{
|
str.ptr = lexptr - 1;
|
str.ptr = lexptr - 1;
|
scm_read_token (c, 0);
|
scm_read_token (c, 0);
|
if (!skipping)
|
if (!skipping)
|
{
|
{
|
svalue = scm_istring2number (str.ptr, lexptr - str.ptr, 10);
|
svalue = scm_istring2number (str.ptr, lexptr - str.ptr, 10);
|
if (svalue != SCM_BOOL_F)
|
if (svalue != SCM_BOOL_F)
|
goto handle_immediate;
|
goto handle_immediate;
|
goto tok;
|
goto tok;
|
}
|
}
|
}
|
}
|
return;
|
return;
|
case ':':
|
case ':':
|
scm_read_token ('-', 0);
|
scm_read_token ('-', 0);
|
return;
|
return;
|
#if 0
|
#if 0
|
do_symbol:
|
do_symbol:
|
#endif
|
#endif
|
default:
|
default:
|
str.ptr = lexptr - 1;
|
str.ptr = lexptr - 1;
|
scm_read_token (c, 0);
|
scm_read_token (c, 0);
|
tok:
|
tok:
|
if (!skipping)
|
if (!skipping)
|
{
|
{
|
str.length = lexptr - str.ptr;
|
str.length = lexptr - str.ptr;
|
if (str.ptr[0] == '$')
|
if (str.ptr[0] == '$')
|
{
|
{
|
write_dollar_variable (str);
|
write_dollar_variable (str);
|
return;
|
return;
|
}
|
}
|
write_exp_elt_opcode (OP_NAME);
|
write_exp_elt_opcode (OP_NAME);
|
write_exp_string (str);
|
write_exp_string (str);
|
write_exp_elt_opcode (OP_NAME);
|
write_exp_elt_opcode (OP_NAME);
|
}
|
}
|
return;
|
return;
|
}
|
}
|
handle_immediate:
|
handle_immediate:
|
if (!skipping)
|
if (!skipping)
|
{
|
{
|
write_exp_elt_opcode (OP_LONG);
|
write_exp_elt_opcode (OP_LONG);
|
write_exp_elt_type (builtin_type_scm);
|
write_exp_elt_type (builtin_type_scm);
|
write_exp_elt_longcst (svalue);
|
write_exp_elt_longcst (svalue);
|
write_exp_elt_opcode (OP_LONG);
|
write_exp_elt_opcode (OP_LONG);
|
}
|
}
|
}
|
}
|
|
|
int
|
int
|
scm_parse ()
|
scm_parse ()
|
{
|
{
|
char *start;
|
char *start;
|
while (*lexptr == ' ')
|
while (*lexptr == ' ')
|
lexptr++;
|
lexptr++;
|
start = lexptr;
|
start = lexptr;
|
scm_lreadr (USE_EXPRSTRING);
|
scm_lreadr (USE_EXPRSTRING);
|
#if USE_EXPRSTRING
|
#if USE_EXPRSTRING
|
str.length = lexptr - start;
|
str.length = lexptr - start;
|
str.ptr = start;
|
str.ptr = start;
|
write_exp_elt_opcode (OP_EXPRSTRING);
|
write_exp_elt_opcode (OP_EXPRSTRING);
|
write_exp_string (str);
|
write_exp_string (str);
|
write_exp_elt_opcode (OP_EXPRSTRING);
|
write_exp_elt_opcode (OP_EXPRSTRING);
|
#endif
|
#endif
|
return 0;
|
return 0;
|
}
|
}
|
|
|
