1 files changed, 120 insertions, 0 deletions
diff --git a/bin/sh/arith_tokens.h b/bin/sh/arith_tokens.h
new file mode 100644
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+++ b/bin/sh/arith_tokens.h
@@ -0,0 +1,120 @@
+/*	$NetBSD: arith_tokens.h,v 1.3 2017/07/24 13:21:14 kre Exp $	*/
+
+/*-
+ * Copyright (c) 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 2007
+ *	Herbert Xu <herbert@gondor.apana.org.au>.  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.
+ *
+ * From FreeBSD who obtained it from dash (modified both times.)
+ */
+
+/*
+ * Tokens returned from arith_token()
+ *
+ * Caution, values are not arbitrary.
+ */
+
+#define	ARITH_BAD	0
+
+#define	ARITH_ASS	1
+
+#define	ARITH_OR	2
+#define	ARITH_AND	3
+#define	ARITH_NUM	5
+#define	ARITH_VAR	6
+#define	ARITH_NOT	7
+
+#define	ARITH_BINOP_MIN	8
+
+#define	ARITH_LE	8
+#define	ARITH_GE	9
+#define	ARITH_LT	10
+#define	ARITH_GT	11
+#define	ARITH_EQ	12	/* Must be ARITH_ASS + ARITH_ASS_GAP */
+
+#define	ARITH_ASS_BASE	13
+
+#define	ARITH_REM	13
+#define	ARITH_BAND	14
+#define	ARITH_LSHIFT	15
+#define	ARITH_RSHIFT	16
+#define	ARITH_MUL	17
+#define	ARITH_ADD	18
+#define	ARITH_BOR	19
+#define	ARITH_SUB	20
+#define	ARITH_BXOR	21
+#define	ARITH_DIV	22
+
+#define	ARITH_NE	23
+
+#define	ARITH_BINOP_MAX	24
+
+#define	ARITH_ASS_MIN	ARITH_BINOP_MAX
+#define	ARITH_ASS_GAP	(ARITH_ASS_MIN - ARITH_ASS_BASE)
+
+#define	ARITH_REMASS	(ARITH_ASS_GAP + ARITH_REM)
+#define	ARITH_BANDASS	(ARITH_ASS_GAP + ARITH_BAND)
+#define	ARITH_LSHIFTASS	(ARITH_ASS_GAP + ARITH_LSHIFT)
+#define	ARITH_RSHIFTASS	(ARITH_ASS_GAP + ARITH_RSHIFT)
+#define	ARITH_MULASS	(ARITH_ASS_GAP + ARITH_MUL)
+#define	ARITH_ADDASS	(ARITH_ASS_GAP + ARITH_ADD)
+#define	ARITH_BORASS	(ARITH_ASS_GAP + ARITH_BOR)
+#define	ARITH_SUBASS	(ARITH_ASS_GAP + ARITH_SUB)
+#define	ARITH_BXORASS	(ARITH_ASS_GAP + ARITH_BXOR)
+#define	ARITH_DIVASS	(ARITH_ASS_GAP + ARITH_BXOR)
+
+#define	ARITH_ASS_MAX	34
+
+#define	ARITH_LPAREN	34
+#define	ARITH_RPAREN	35
+#define	ARITH_BNOT	36
+#define	ARITH_QMARK	37
+#define	ARITH_COLON	38
+#define	ARITH_INCR	39
+#define	ARITH_DECR	40
+#define	ARITH_COMMA	41
+
+/*
+ * Globals shared between arith parser, and lexer
+ */
+
+extern const char *arith_buf;
+
+union a_token_val {
+	intmax_t val;
+	char *name;
+};
+
+extern union a_token_val a_t_val;
+
+extern int arith_lno, arith_var_lno;
+
+int arith_token(void);