diff options
Diffstat (limited to 'usr.bin/window/parser1.c')
| -rw-r--r-- | usr.bin/window/parser1.c | 224 |
1 files changed, 0 insertions, 224 deletions
diff --git a/usr.bin/window/parser1.c b/usr.bin/window/parser1.c deleted file mode 100644 index ac9f9d358fb5..000000000000 --- a/usr.bin/window/parser1.c +++ /dev/null @@ -1,224 +0,0 @@ -/* - * Copyright (c) 1983, 1993 - * The Regents of the University of California. All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Edward Wang at The University of California, Berkeley. - * - * 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 char sccsid[] = "@(#)parser1.c 8.1 (Berkeley) 6/6/93"; -static char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - -#include "parser.h" - -p_start() -{ - char flag = 1; - - (void) s_gettok(); - for (;;) { - p_statementlist(flag); - if (token == T_EOF || p_abort()) - break; - flag = 0; - p_synerror(); - while (token != T_EOL && token != T_EOF) { - if (token == T_STR) - str_free(token_str); - (void) s_gettok(); - } - if (token == T_EOL) - (void) s_gettok(); - p_clearerr(); - } -} - -p_statementlist(flag) -char flag; -{ - for (; p_statement(flag) >= 0; p_clearerr()) - ; -} - -p_statement(flag) -char flag; -{ - switch (token) { - case T_EOL: - (void) s_gettok(); - return 0; - case T_IF: - return p_if(flag); - default: - return p_expression(flag); - } -} - -p_if(flag) -char flag; -{ - struct value t; - char true = 0; - -top: - (void) s_gettok(); - - if (p_expr(&t, flag) < 0) { - p_synerror(); - return -1; - } - switch (t.v_type) { - case V_NUM: - true = !true && t.v_num != 0; - break; - case V_STR: - p_error("if: Numeric value required."); - str_free(t.v_str); - case V_ERR: - flag = 0; - break; - } - - if (token != T_THEN) { - p_synerror(); - return -1; - } - - (void) s_gettok(); - p_statementlist(flag && true); - if (p_erred()) - return -1; - - if (token == T_ELSIF) - goto top; - - if (token == T_ELSE) { - (void) s_gettok(); - p_statementlist(flag && !true); - if (p_erred()) - return -1; - } - - if (token == T_ENDIF) { - (void) s_gettok(); - return 0; - } - - p_synerror(); - return -1; -} - -p_expression(flag) -char flag; -{ - struct value t; - char *cmd; - int p_function(), p_assign(); - - switch (token) { - case T_NUM: - t.v_type = V_NUM; - t.v_num = token_num; - (void) s_gettok(); - break; - case T_STR: - t.v_type = V_STR; - t.v_str = token_str; - (void) s_gettok(); - break; - default: - if (p_expr(&t, flag) < 0) - return -1; - if (token == T_EOF) { - val_free(t); - return 0; - } - } - if (token != T_ASSIGN && p_convstr(&t) < 0) - return -1; - cmd = t.v_type == V_STR ? t.v_str : 0; - if ((*(token == T_ASSIGN ? p_assign : p_function))(cmd, &t, flag) < 0) { - if (cmd) - str_free(cmd); - return -1; - } - if (cmd) - str_free(cmd); - val_free(t); - if (token == T_EOL) - (void) s_gettok(); - else if (token != T_EOF) { - p_synerror(); - return -1; - } - return 0; -} - -p_convstr(v) -register struct value *v; -{ - if (v->v_type != V_NUM) - return 0; - if ((v->v_str = str_itoa(v->v_num)) == 0) { - p_memerror(); - v->v_type = V_ERR; - return -1; - } - v->v_type = V_STR; - return 0; -} - -p_synerror() -{ - if (!cx.x_synerred) { - cx.x_synerred = cx.x_erred = 1; - error("Syntax error."); - } -} - -/*VARARGS1*/ -p_error(msg, a, b, c) -char *msg; -{ - if (!cx.x_erred) { - cx.x_erred = 1; - error(msg, a, b, c); - } -} - -p_memerror() -{ - cx.x_erred = cx.x_abort = 1; - error("Out of memory."); -} |