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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 | } |