diff options
Diffstat (limited to 'bin/cash/arith_yylex.c')
| -rw-r--r-- | bin/cash/arith_yylex.c | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/bin/cash/arith_yylex.c b/bin/cash/arith_yylex.c deleted file mode 100644 index 0f38c878..00000000 --- a/bin/cash/arith_yylex.c +++ /dev/null @@ -1,248 +0,0 @@ -/*- - * Copyright (c) 2002 - * Herbert Xu. - * Copyright (c) 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. 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. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD: releng/12.0/bin/sh/arith_yylex.c 279503 2015-03-01 21:46:55Z jilles $"); - -#include <inttypes.h> -#include <stdlib.h> -#include <string.h> -#include "shell.h" -#include "arith_yacc.h" -#include "expand.h" -#include "error.h" -#include "memalloc.h" -#include "parser.h" -#include "syntax.h" - -#if ARITH_BOR + 11 != ARITH_BORASS || ARITH_ASS + 11 != ARITH_EQ -#error Arithmetic tokens are out of order. -#endif - -int -yylex(void) -{ - int value; - const char *buf = arith_buf; - char *end; - const char *p; - - for (;;) { - value = *buf; - switch (value) { - case ' ': - case '\t': - case '\n': - buf++; - continue; - default: - return ARITH_BAD; - case '0': - case '1': - case '2': - case '3': - case '4': - case '5': - case '6': - case '7': - case '8': - case '9': - yylval.val = strtoarith_t(buf, &end, 0); - arith_buf = end; - return ARITH_NUM; - case 'A': - case 'B': - case 'C': - case 'D': - case 'E': - case 'F': - case 'G': - case 'H': - case 'I': - case 'J': - case 'K': - case 'L': - case 'M': - case 'N': - case 'O': - case 'P': - case 'Q': - case 'R': - case 'S': - case 'T': - case 'U': - case 'V': - case 'W': - case 'X': - case 'Y': - case 'Z': - case '_': - case 'a': - case 'b': - case 'c': - case 'd': - case 'e': - case 'f': - case 'g': - case 'h': - case 'i': - case 'j': - case 'k': - case 'l': - case 'm': - case 'n': - case 'o': - case 'p': - case 'q': - case 'r': - case 's': - case 't': - case 'u': - case 'v': - case 'w': - case 'x': - case 'y': - case 'z': - p = buf; - while (buf++, is_in_name(*buf)) - ; - yylval.name = stalloc(buf - p + 1); - memcpy(yylval.name, p, buf - p); - yylval.name[buf - p] = '\0'; - value = ARITH_VAR; - goto out; - case '=': - value += ARITH_ASS - '='; -checkeq: - buf++; -checkeqcur: - if (*buf != '=') - goto out; - value += 11; - break; - case '>': - switch (*++buf) { - case '=': - value += ARITH_GE - '>'; - break; - case '>': - value += ARITH_RSHIFT - '>'; - goto checkeq; - default: - value += ARITH_GT - '>'; - goto out; - } - break; - case '<': - switch (*++buf) { - case '=': - value += ARITH_LE - '<'; - break; - case '<': - value += ARITH_LSHIFT - '<'; - goto checkeq; - default: - value += ARITH_LT - '<'; - goto out; - } - break; - case '|': - if (*++buf != '|') { - value += ARITH_BOR - '|'; - goto checkeqcur; - } - value += ARITH_OR - '|'; - break; - case '&': - if (*++buf != '&') { - value += ARITH_BAND - '&'; - goto checkeqcur; - } - value += ARITH_AND - '&'; - break; - case '!': - if (*++buf != '=') { - value += ARITH_NOT - '!'; - goto out; - } - value += ARITH_NE - '!'; - break; - case 0: - goto out; - case '(': - value += ARITH_LPAREN - '('; - break; - case ')': - value += ARITH_RPAREN - ')'; - break; - case '*': - value += ARITH_MUL - '*'; - goto checkeq; - case '/': - value += ARITH_DIV - '/'; - goto checkeq; - case '%': - value += ARITH_REM - '%'; - goto checkeq; - case '+': - if (buf[1] == '+') - return ARITH_BAD; - value += ARITH_ADD - '+'; - goto checkeq; - case '-': - if (buf[1] == '-') - return ARITH_BAD; - value += ARITH_SUB - '-'; - goto checkeq; - case '~': - value += ARITH_BNOT - '~'; - break; - case '^': - value += ARITH_BXOR - '^'; - goto checkeq; - case '?': - value += ARITH_QMARK - '?'; - break; - case ':': - value += ARITH_COLON - ':'; - break; - } - break; - } - - buf++; -out: - arith_buf = buf; - return value; -} |