0,0 → 1,428 |
/* $NetBSD: mksyntax.c,v 1.23 2000/07/18 19:13:21 cgd Exp $ */ |
|
/*- |
* Copyright (c) 1991, 1993 |
* The Regents of the University of California. All rights reserved. |
* |
* This code is derived from software contributed to Berkeley by |
* Kenneth Almquist. |
* |
* Redistribution and use in source and binary forms, with or without |
* modification, are permitted provided that the following conditions |
* are met: |
* 1. Redistributions of source code must retain the above copyright |
* notice, this list of conditions and the following disclaimer. |
* 2. Redistributions in binary form must reproduce the above copyright |
* notice, this list of conditions and the following disclaimer in the |
* documentation and/or other materials provided with the distribution. |
* 3. All advertising materials mentioning features or use of this software |
* must display the following acknowledgement: |
* This product includes software developed by the University of |
* California, Berkeley and its contributors. |
* 4. Neither the name of the University nor the names of its contributors |
* may be used to endorse or promote products derived from this software |
* without specific prior written permission. |
* |
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
* SUCH DAMAGE. |
*/ |
|
#ifndef lint |
static const char copyright[] = |
"@(#) Copyright (c) 1991, 1993\n\ |
The Regents of the University of California. All rights reserved.\n"; |
#endif /* not lint */ |
|
#ifndef lint |
#if 0 |
static char sccsid[] = "@(#)mksyntax.c 8.2 (Berkeley) 5/4/95"; |
#else |
static const char rcsid[] = |
"$NetBSD: mksyntax.c,v 1.23 2000/07/18 19:13:21 cgd Exp $"; |
#endif |
#endif /* not lint */ |
|
/* |
* This program creates syntax.h and syntax.c. |
*/ |
|
#include <stdio.h> |
#include <stdlib.h> |
#include <string.h> |
#include <sys/types.h> |
#include "../parser.h" |
|
|
struct synclass { |
char *name; |
char *comment; |
}; |
|
/* Syntax classes */ |
struct synclass synclass[] = { |
{ "CWORD", "character is nothing special" }, |
{ "CNL", "newline character" }, |
{ "CBACK", "a backslash character" }, |
{ "CSQUOTE", "single quote" }, |
{ "CDQUOTE", "double quote" }, |
{ "CENDQUOTE", "a terminating quote" }, |
{ "CBQUOTE", "backwards single quote" }, |
{ "CVAR", "a dollar sign" }, |
{ "CENDVAR", "a '}' character" }, |
{ "CLP", "a left paren in arithmetic" }, |
{ "CRP", "a right paren in arithmetic" }, |
{ "CEOF", "end of file" }, |
{ "CCTL", "like CWORD, except it must be escaped" }, |
{ "CSPCL", "these terminate a word" }, |
{ NULL, NULL } |
}; |
|
|
/* |
* Syntax classes for is_ functions. Warning: if you add new classes |
* you may have to change the definition of the is_in_name macro. |
*/ |
struct synclass is_entry[] = { |
{ "ISDIGIT", "a digit" }, |
{ "ISUPPER", "an upper case letter" }, |
{ "ISLOWER", "a lower case letter" }, |
{ "ISUNDER", "an underscore" }, |
{ "ISSPECL", "the name of a special parameter" }, |
{ NULL, NULL } |
}; |
|
static char writer[] = "\ |
/*\n\ |
* This file was generated by the mksyntax program.\n\ |
*/\n\ |
\n"; |
|
|
static FILE *cfile; |
static FILE *hfile; |
static char *syntax[513]; |
static int base; |
static int size; /* number of values which a char variable can have */ |
static int nbits; /* number of bits in a character */ |
static int digit_contig;/* true if digits are contiguous */ |
|
static void filltable(char *); |
static void init(void); |
static void add(char *, char *); |
static void print(char *); |
static void output_type_macros(void); |
static void digit_convert(void); |
int main(int, char **); |
|
int |
main(argc, argv) |
int argc; |
char **argv; |
{ |
#ifdef TARGET_CHAR |
TARGET_CHAR c; |
TARGET_CHAR d; |
#else |
char c; |
char d; |
#endif |
int sign; |
int i; |
char buf[80]; |
int pos; |
static char digit[] = "0123456789"; |
|
/* Create output files */ |
if ((cfile = fopen("syntax.c", "w")) == NULL) { |
perror("syntax.c"); |
exit(2); |
} |
if ((hfile = fopen("syntax.h", "w")) == NULL) { |
perror("syntax.h"); |
exit(2); |
} |
fputs(writer, hfile); |
fputs(writer, cfile); |
|
/* Determine the characteristics of chars. */ |
c = -1; |
if (c <= 0) |
sign = 1; |
else |
sign = 0; |
for (nbits = 1 ; ; nbits++) { |
d = (1 << nbits) - 1; |
if (d == c) |
break; |
} |
printf("%s %d bit chars\n", sign? "signed" : "unsigned", nbits); |
if (nbits > 9) { |
fputs("Characters can't have more than 9 bits\n", stderr); |
exit(2); |
} |
size = (1 << nbits) + 1; |
base = 1; |
if (sign) |
base += 1 << (nbits - 1); |
digit_contig = 1; |
for (i = 0 ; i < 10 ; i++) { |
if (digit[i] != '0' + i) |
digit_contig = 0; |
} |
|
fputs("#include <sys/cdefs.h>\n", hfile); |
fputs("#include <ctype.h>\n", hfile); |
|
/* Generate the #define statements in the header file */ |
fputs("/* Syntax classes */\n", hfile); |
for (i = 0 ; synclass[i].name ; i++) { |
sprintf(buf, "#define %s %d", synclass[i].name, i); |
fputs(buf, hfile); |
for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07) |
putc('\t', hfile); |
fprintf(hfile, "/* %s */\n", synclass[i].comment); |
} |
putc('\n', hfile); |
fputs("/* Syntax classes for is_ functions */\n", hfile); |
for (i = 0 ; is_entry[i].name ; i++) { |
sprintf(buf, "#define %s %#o", is_entry[i].name, 1 << i); |
fputs(buf, hfile); |
for (pos = strlen(buf) ; pos < 32 ; pos = (pos + 8) & ~07) |
putc('\t', hfile); |
fprintf(hfile, "/* %s */\n", is_entry[i].comment); |
} |
putc('\n', hfile); |
fprintf(hfile, "#define SYNBASE %d\n", base); |
fprintf(hfile, "#define PEOF %d\n\n", -base); |
if (sign) |
fprintf(hfile, "#define UPEOF %d\n\n", -base); |
else |
fprintf(hfile, "#define UPEOF ((unsigned char) %d)\n\n", -base); |
putc('\n', hfile); |
fputs("#define BASESYNTAX (basesyntax + SYNBASE)\n", hfile); |
fputs("#define DQSYNTAX (dqsyntax + SYNBASE)\n", hfile); |
fputs("#define SQSYNTAX (sqsyntax + SYNBASE)\n", hfile); |
fputs("#define ARISYNTAX (arisyntax + SYNBASE)\n", hfile); |
putc('\n', hfile); |
output_type_macros(); /* is_digit, etc. */ |
putc('\n', hfile); |
|
/* Generate the syntax tables. */ |
fputs("#include \"shell.h\"\n", cfile); |
fputs("#include \"syntax.h\"\n\n", cfile); |
init(); |
fputs("/* syntax table used when not in quotes */\n", cfile); |
add("\n", "CNL"); |
add("\\", "CBACK"); |
add("'", "CSQUOTE"); |
add("\"", "CDQUOTE"); |
add("`", "CBQUOTE"); |
add("$", "CVAR"); |
add("}", "CENDVAR"); |
add("<>();&| \t", "CSPCL"); |
print("basesyntax"); |
init(); |
fputs("\n/* syntax table used when in double quotes */\n", cfile); |
add("\n", "CNL"); |
add("\\", "CBACK"); |
add("\"", "CENDQUOTE"); |
add("`", "CBQUOTE"); |
add("$", "CVAR"); |
add("}", "CENDVAR"); |
/* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ |
add("!*?[=~:/-]", "CCTL"); |
print("dqsyntax"); |
init(); |
fputs("\n/* syntax table used when in single quotes */\n", cfile); |
add("\n", "CNL"); |
add("'", "CENDQUOTE"); |
/* ':/' for tilde expansion, '-' for [a\-x] pattern ranges */ |
add("!*?[=~:/-]\\", "CCTL"); |
print("sqsyntax"); |
init(); |
fputs("\n/* syntax table used when in arithmetic */\n", cfile); |
add("\n", "CNL"); |
add("\\", "CBACK"); |
add("`", "CBQUOTE"); |
add("'", "CSQUOTE"); |
add("\"", "CDQUOTE"); |
add("$", "CVAR"); |
add("}", "CENDVAR"); |
add("(", "CLP"); |
add(")", "CRP"); |
print("arisyntax"); |
filltable("0"); |
fputs("\n/* character classification table */\n", cfile); |
add("0123456789", "ISDIGIT"); |
add("abcdefghijklmnopqrstucvwxyz", "ISLOWER"); |
add("ABCDEFGHIJKLMNOPQRSTUCVWXYZ", "ISUPPER"); |
add("_", "ISUNDER"); |
add("#?$!-*@", "ISSPECL"); |
print("is_type"); |
if (! digit_contig) |
digit_convert(); |
exit(0); |
/* NOTREACHED */ |
} |
|
|
|
/* |
* Clear the syntax table. |
*/ |
|
static void |
filltable(dftval) |
char *dftval; |
{ |
int i; |
|
for (i = 0 ; i < size ; i++) |
syntax[i] = dftval; |
} |
|
|
/* |
* Initialize the syntax table with default values. |
*/ |
|
static void |
init() |
{ |
filltable("CWORD"); |
syntax[0] = "CEOF"; |
#ifdef TARGET_CHAR |
syntax[base + (TARGET_CHAR)CTLESC] = "CCTL"; |
syntax[base + (TARGET_CHAR)CTLVAR] = "CCTL"; |
syntax[base + (TARGET_CHAR)CTLENDVAR] = "CCTL"; |
syntax[base + (TARGET_CHAR)CTLBACKQ] = "CCTL"; |
syntax[base + (TARGET_CHAR)CTLBACKQ + (TARGET_CHAR)CTLQUOTE] = "CCTL"; |
syntax[base + (TARGET_CHAR)CTLARI] = "CCTL"; |
syntax[base + (TARGET_CHAR)CTLENDARI] = "CCTL"; |
syntax[base + (TARGET_CHAR)CTLQUOTEMARK] = "CCTL"; |
#else |
syntax[base + CTLESC] = "CCTL"; |
syntax[base + CTLVAR] = "CCTL"; |
syntax[base + CTLENDVAR] = "CCTL"; |
syntax[base + CTLBACKQ] = "CCTL"; |
syntax[base + CTLBACKQ + CTLQUOTE] = "CCTL"; |
syntax[base + CTLARI] = "CCTL"; |
syntax[base + CTLENDARI] = "CCTL"; |
syntax[base + CTLQUOTEMARK] = "CCTL"; |
#endif /* TARGET_CHAR */ |
} |
|
|
/* |
* Add entries to the syntax table. |
*/ |
|
static void |
add(p, type) |
char *p, *type; |
{ |
while (*p) |
syntax[*p++ + base] = type; |
} |
|
|
|
/* |
* Output the syntax table. |
*/ |
|
static void |
print(name) |
char *name; |
{ |
int i; |
int col; |
|
fprintf(hfile, "extern const char %s[];\n", name); |
fprintf(cfile, "const char %s[%d] = {\n", name, size); |
col = 0; |
for (i = 0 ; i < size ; i++) { |
if (i == 0) { |
fputs(" ", cfile); |
} else if ((i & 03) == 0) { |
fputs(",\n ", cfile); |
col = 0; |
} else { |
putc(',', cfile); |
while (++col < 9 * (i & 03)) |
putc(' ', cfile); |
} |
fputs(syntax[i], cfile); |
col += strlen(syntax[i]); |
} |
fputs("\n};\n", cfile); |
} |
|
|
|
/* |
* Output character classification macros (e.g. is_digit). If digits are |
* contiguous, we can test for them quickly. |
*/ |
|
static char *macro[] = { |
"#define is_digit(c)\t((is_type+SYNBASE)[c] & ISDIGIT)", |
"#define is_alpha(c)\t((c) != UPEOF && ((c) < CTLESC || (c) > CTLENDARI) && isalpha((unsigned char) (c)))", |
"#define is_name(c)\t((c) != UPEOF && ((c) < CTLESC || (c) > CTLENDARI) && ((c) == '_' || isalpha((unsigned char) (c))))", |
"#define is_in_name(c)\t((c) != UPEOF && ((c) < CTLESC || (c) > CTLENDARI) && ((c) == '_' || isalnum((unsigned char) (c))))", |
"#define is_special(c)\t((is_type+SYNBASE)[c] & (ISSPECL|ISDIGIT))", |
NULL |
}; |
|
static void |
output_type_macros() |
{ |
char **pp; |
|
if (digit_contig) |
macro[0] = "#define is_digit(c)\t((unsigned)((c) - '0') <= 9)"; |
for (pp = macro ; *pp ; pp++) |
fprintf(hfile, "%s\n", *pp); |
if (digit_contig) |
fputs("#define digit_val(c)\t((c) - '0')\n", hfile); |
else |
fputs("#define digit_val(c)\t(digit_value[c])\n", hfile); |
} |
|
|
|
/* |
* Output digit conversion table (if digits are not contiguous). |
*/ |
|
static void |
digit_convert() |
{ |
int maxdigit; |
static char digit[] = "0123456789"; |
char *p; |
int i; |
|
maxdigit = 0; |
for (p = digit ; *p ; p++) |
if (*p > maxdigit) |
maxdigit = *p; |
fputs("extern const char digit_value[];\n", hfile); |
fputs("\n\nconst char digit_value[] = {\n", cfile); |
for (i = 0 ; i <= maxdigit ; i++) { |
for (p = digit ; *p && *p != i ; p++); |
if (*p == '\0') |
p = digit; |
fprintf(cfile, " %ld,\n", (long)(p - digit)); |
} |
fputs("};\n", cfile); |
} |