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1 /*-
2  * Copyright (c) 2016
3  *	mirabilos <m@mirbsd.org>
4  *
5  * Provided that these terms and disclaimer and all copyright notices
6  * are retained or reproduced in an accompanying document, permission
7  * is granted to deal in this work without restriction, including un-
8  * limited rights to use, publicly perform, distribute, sell, modify,
9  * merge, give away, or sublicence.
10  *
11  * This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
12  * the utmost extent permitted by applicable law, neither express nor
13  * implied; without malicious intent or gross negligence. In no event
14  * may a licensor, author or contributor be held liable for indirect,
15  * direct, other damage, loss, or other issues arising in any way out
16  * of dealing in the work, even if advised of the possibility of such
17  * damage or existence of a defect, except proven that it results out
18  * of said person's immediate fault when using the work as intended.
19  */
20 
21 #if defined(EXPRTOK_DEFNS)
22 __RCSID("$MirOS: src/bin/mksh/exprtok.h,v 1.2 2016/08/12 16:48:05 tg Exp $");
23 /* see range comment below */
24 #define IS_ASSIGNOP(op) ((int)(op) >= (int)O_ASN && (int)(op) <= (int)O_BORASN)
25 #define FN(name, len, prec, enum)	/* nothing */
26 #define F1(enum)			/* nothing */
27 #elif defined(EXPRTOK_ENUM)
28 #define F0(name, len, prec, enum)	enum = 0,
29 #define FN(name, len, prec, enum)	enum,
30 #define F1(enum)			enum,
31 #define F2(enum)			enum,
32 #define F9(enum)			enum
33 #elif defined(EXPRTOK_NAME)
34 #define FN(name, len, prec, enum)	name,
35 #define F1(enum)			""
36 #elif defined(EXPRTOK_LEN)
37 #define FN(name, len, prec, enum)	len,
38 #define F1(enum)			0
39 #elif defined(EXPRTOK_PREC)
40 #define FN(name, len, prec, enum)	prec,
41 #define F1(enum)			P_PRIMARY
42 #endif
43 
44 #ifndef F0
45 #define F0 FN
46 #endif
47 
48 #ifndef F2
49 #define F2(enum)			/* nothing */
50 #define F9(enum)			/* nothing */
51 #endif
52 
53 /* tokens must be ordered so the longest are first (e.g. += before +) */
54 
55 /* some (long) unary operators */
56 FN("++", 2, P_PRIMARY, O_PLUSPLUS = 0)	/* before + */
57 FN("--", 2, P_PRIMARY, O_MINUSMINUS)	/* before - */
58 /* binary operators */
59 FN("==", 2, P_EQUALITY, O_EQ)		/* before = */
60 FN("!=", 2, P_EQUALITY, O_NE)		/* before ! */
61 /* assignments are assumed to be in range O_ASN .. O_BORASN */
62 FN("=", 1, P_ASSIGN, O_ASN)
63 FN("*=", 2, P_ASSIGN, O_TIMESASN)
64 FN("/=", 2, P_ASSIGN, O_DIVASN)
65 FN("%=", 2, P_ASSIGN, O_MODASN)
66 FN("+=", 2, P_ASSIGN, O_PLUSASN)
67 FN("-=", 2, P_ASSIGN, O_MINUSASN)
68 #ifndef MKSH_LEGACY_MODE
69 FN("^<=", 3, P_ASSIGN, O_ROLASN)	/* before ^< */
70 FN("^>=", 3, P_ASSIGN, O_RORASN)	/* before ^> */
71 #endif
72 FN("<<=", 3, P_ASSIGN, O_LSHIFTASN)
73 FN(">>=", 3, P_ASSIGN, O_RSHIFTASN)
74 FN("&=", 2, P_ASSIGN, O_BANDASN)
75 FN("^=", 2, P_ASSIGN, O_BXORASN)
76 FN("|=", 2, P_ASSIGN, O_BORASN)
77 /* binary non-assignment operators */
78 #ifndef MKSH_LEGACY_MODE
79 FN("^<", 2, P_SHIFT, O_ROL)		/* before ^ */
80 FN("^>", 2, P_SHIFT, O_ROR)		/* before ^ */
81 #endif
82 FN("<<", 2, P_SHIFT, O_LSHIFT)
83 FN(">>", 2, P_SHIFT, O_RSHIFT)
84 FN("<=", 2, P_RELATION, O_LE)
85 FN(">=", 2, P_RELATION, O_GE)
86 FN("<", 1, P_RELATION, O_LT)
87 FN(">", 1, P_RELATION, O_GT)
88 FN("&&", 2, P_LAND, O_LAND)
89 FN("||", 2, P_LOR, O_LOR)
90 FN("*", 1, P_MULT, O_TIMES)
91 FN("/", 1, P_MULT, O_DIV)
92 FN("%", 1, P_MULT, O_MOD)
93 FN("+", 1, P_ADD, O_PLUS)
94 FN("-", 1, P_ADD, O_MINUS)
95 FN("&", 1, P_BAND, O_BAND)
96 FN("^", 1, P_BXOR, O_BXOR)
97 FN("|", 1, P_BOR, O_BOR)
98 FN("?", 1, P_TERN, O_TERN)
99 FN(",", 1, P_COMMA, O_COMMA)
100 /* things after this aren't used as binary operators */
101 /* unary that are not also binaries */
102 FN("~", 1, P_PRIMARY, O_BNOT)
103 FN("!", 1, P_PRIMARY, O_LNOT)
104 /* misc */
105 FN("(", 1, P_PRIMARY, OPEN_PAREN)
106 FN(")", 1, P_PRIMARY, CLOSE_PAREN)
107 FN(":", 1, P_PRIMARY, CTERN)
108 /* things that don't appear in the opinfo[] table */
109 F1(VAR)				/*XXX should be F2 */
110 F2(LIT)
111 F2(END)
112 F9(BAD)
113 
114 #undef FN
115 #undef F0
116 #undef F1
117 #undef F2
118 #undef F9
119 #undef EXPRTOK_DEFNS
120 #undef EXPRTOK_ENUM
121 #undef EXPRTOK_NAME
122 #undef EXPRTOK_LEN
123 #undef EXPRTOK_PREC
124