Rev 2714 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2714 | cejka | 1 | %{ |
| 2 | /* $NetBSD: arith_lex.l,v 1.10 1999/02/05 07:52:52 christos Exp $ */ |
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| 3 | |||
| 4 | /*- |
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| 5 | * Copyright (c) 1993 |
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| 6 | * The Regents of the University of California. All rights reserved. |
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| 7 | * |
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| 8 | * This code is derived from software contributed to Berkeley by |
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| 9 | * Kenneth Almquist. |
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| 10 | * |
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| 11 | * Redistribution and use in source and binary forms, with or without |
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| 12 | * modification, are permitted provided that the following conditions |
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| 13 | * are met: |
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| 14 | * 1. Redistributions of source code must retain the above copyright |
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| 15 | * notice, this list of conditions and the following disclaimer. |
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| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 17 | * notice, this list of conditions and the following disclaimer in the |
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| 18 | * documentation and/or other materials provided with the distribution. |
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| 19 | * 3. All advertising materials mentioning features or use of this software |
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| 20 | * must display the following acknowledgement: |
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| 21 | * This product includes software developed by the University of |
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| 22 | * California, Berkeley and its contributors. |
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| 23 | * 4. Neither the name of the University nor the names of its contributors |
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| 24 | * may be used to endorse or promote products derived from this software |
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| 25 | * without specific prior written permission. |
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| 26 | * |
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| 27 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 28 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 29 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 30 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 31 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 32 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 33 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 34 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 35 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 36 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 37 | * SUCH DAMAGE. |
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| 38 | */ |
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| 39 | |||
| 40 | #include <sys/cdefs.h> |
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| 41 | #ifndef lint |
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| 42 | #if 0 |
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| 43 | static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95"; |
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| 44 | #else |
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| 45 | __RCSID("$NetBSD: arith_lex.l,v 1.10 1999/02/05 07:52:52 christos Exp $"); |
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| 46 | #endif |
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| 47 | #endif /* not lint */ |
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| 48 | |||
| 49 | #include <unistd.h> |
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| 50 | #include "arith.h" |
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| 51 | #include "error.h" |
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| 52 | #include "expand.h" |
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| 53 | |||
| 54 | extern int yylval; |
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| 55 | extern char *arith_buf, *arith_startbuf; |
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| 56 | #undef YY_INPUT |
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| 57 | #define YY_INPUT(buf,result,max) \ |
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| 58 | result = (*buf = *arith_buf++) ? 1 : YY_NULL; |
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| 59 | #define YY_NO_UNPUT |
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| 60 | %} |
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| 61 | |||
| 62 | %% |
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| 63 | [ \t\n] { ; } |
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| 64 | [0-9]+ { yylval = atol(yytext); return(ARITH_NUM); } |
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| 65 | "(" { return(ARITH_LPAREN); } |
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| 66 | ")" { return(ARITH_RPAREN); } |
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| 67 | "||" { return(ARITH_OR); } |
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| 68 | "&&" { return(ARITH_AND); } |
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| 69 | "|" { return(ARITH_BOR); } |
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| 70 | "^" { return(ARITH_BXOR); } |
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| 71 | "&" { return(ARITH_BAND); } |
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| 72 | "==" { return(ARITH_EQ); } |
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| 73 | "!=" { return(ARITH_NE); } |
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| 74 | ">" { return(ARITH_GT); } |
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| 75 | ">=" { return(ARITH_GE); } |
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| 76 | "<" { return(ARITH_LT); } |
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| 77 | "<=" { return(ARITH_LE); } |
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| 78 | "<<" { return(ARITH_LSHIFT); } |
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| 79 | ">>" { return(ARITH_RSHIFT); } |
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| 80 | "*" { return(ARITH_MUL); } |
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| 81 | "/" { return(ARITH_DIV); } |
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| 82 | "%" { return(ARITH_REM); } |
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| 83 | "+" { return(ARITH_ADD); } |
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| 84 | "-" { return(ARITH_SUB); } |
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| 85 | "~" { return(ARITH_BNOT); } |
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| 86 | "!" { return(ARITH_NOT); } |
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| 87 | . { error("arith: syntax error: \"%s\"\n", arith_startbuf); } |
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| 88 | %% |
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| 89 | |||
| 90 | void |
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| 91 | arith_lex_reset() { |
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| 92 | #ifdef YY_NEW_FILE |
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| 93 | YY_NEW_FILE; |
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| 94 | #endif |
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| 95 | } |