projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 0dd4a4ec | 1 | %{ |
| 3d987f16 KB |
2 | /*- |
| 3 | * Copyright (c) 1993 | |
| 4 | * The Regents of the University of California. All rights reserved. | |
| 5 | * | |
| 6 | * This code is derived from software contributed to Berkeley by | |
| 7 | * Kenneth Almquist. | |
| 8 | * | |
| 9 | * %sccs.include.redist.c% | |
| 10 | */ | |
| 11 | ||
| 12 | #ifndef lint | |
| 34a1a05a | 13 | static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) %G%"; |
| 3d987f16 KB |
14 | #endif /* not lint */ |
| 15 | ||
| 34a1a05a | 16 | #include <unistd.h> |
| 0dd4a4ec | 17 | #include "y.tab.h" |
| 34a1a05a | 18 | #include "error.h" |
| 3d987f16 | 19 | |
| 0dd4a4ec MT |
20 | extern yylval; |
| 21 | extern char *arith_buf, *arith_startbuf; | |
| 0dd4a4ec MT |
22 | #undef YY_INPUT |
| 23 | #define YY_INPUT(buf,result,max) \ | |
| 24 | result = (*buf = *arith_buf++) ? 1 : YY_NULL; | |
| 25 | %} | |
| 26 | ||
| 27 | %% | |
| 28 | [ \t\n] { ; } | |
| c1cfba10 KB |
29 | [0-9]+ { yylval = atol(yytext); return(ARITH_NUM); } |
| 30 | "(" { return(ARITH_LPAREN); } | |
| 31 | ")" { return(ARITH_RPAREN); } | |
| 32 | "||" { return(ARITH_OR); } | |
| 33 | "&&" { return(ARITH_AND); } | |
| 34 | "|" { return(ARITH_BOR); } | |
| 35 | "^" { return(ARITH_BXOR); } | |
| 36 | "&" { return(ARITH_BAND); } | |
| 37 | "==" { return(ARITH_EQ); } | |
| 38 | "!=" { return(ARITH_NE); } | |
| 39 | ">" { return(ARITH_GT); } | |
| 40 | ">=" { return(ARITH_GE); } | |
| 41 | "<" { return(ARITH_LT); } | |
| 42 | "<=" { return(ARITH_LE); } | |
| 43 | "<<" { return(ARITH_LSHIFT); } | |
| 44 | ">>" { return(ARITH_RSHIFT); } | |
| 45 | "*" { return(ARITH_MUL); } | |
| 46 | "/" { return(ARITH_DIV); } | |
| 47 | "%" { return(ARITH_REM); } | |
| 48 | "+" { return(ARITH_ADD); } | |
| 49 | "-" { return(ARITH_SUB); } | |
| 50 | "~" { return(ARITH_BNOT); } | |
| 51 | "!" { return(ARITH_NOT); } | |
| 0dd4a4ec MT |
52 | . { error("arith: syntax error: \"%s\"\n", arith_startbuf); } |
| 53 | %% | |
| 54 | ||
| 34a1a05a | 55 | void |
| 0dd4a4ec MT |
56 | arith_lex_reset() { |
| 57 | YY_NEW_FILE; | |
| 58 | } |