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6 * This code is derived from software contributed to Berkeley by
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36 static char sccsid[] = "@(#)arith_lex.l 8.3 (Berkeley) 5/4/95";
40 #include <sys/cdefs.h>
41 __FBSDID("$FreeBSD$");
59 static struct varname *varnames;
62 #define YY_INPUT(buf,result,max) \
64 result = strnlen(arith_buf, max); \
68 memcpy(buf, arith_buf, result); \
69 arith_buf += result; \
79 yylval.l_value = strtoarith_t(yytext, NULL, 16);
84 yylval.l_value = strtoarith_t(yytext, NULL, 8);
89 yylval.l_value = strtoarith_t(yytext, NULL, 10);
93 [A-Za-z_][A-Za-z0-9_]* {
95 * If variable doesn't exist, we should initialize
99 if (lookupvar(yytext) == NULL)
100 setvarsafe(yytext, "0", 0);
101 temp = ckmalloc(sizeof(struct varname) +
103 temp->next = varnames;
105 yylval.s_value = strcpy(temp->name, yytext);
110 "(" { return ARITH_LPAREN; }
111 ")" { return ARITH_RPAREN; }
112 "||" { return ARITH_OR; }
113 "&&" { return ARITH_AND; }
114 "|" { return ARITH_BOR; }
115 "^" { return ARITH_BXOR; }
116 "&" { return ARITH_BAND; }
117 "==" { return ARITH_EQ; }
118 "!=" { return ARITH_NE; }
119 ">" { return ARITH_GT; }
120 ">=" { return ARITH_GE; }
121 "<" { return ARITH_LT; }
122 "<=" { return ARITH_LE; }
123 "<<" { return ARITH_LSHIFT; }
124 ">>" { return ARITH_RSHIFT; }
125 "*" { return ARITH_MUL; }
126 "/" { return ARITH_DIV; }
127 "%" { return ARITH_REM; }
128 "+" { return ARITH_ADD; }
129 "-" { return ARITH_SUB; }
130 "~" { return ARITH_BNOT; }
131 "!" { return ARITH_NOT; }
132 "=" { return ARITH_ASSIGN; }
133 "+=" { return ARITH_ADDASSIGN; }
134 "-=" { return ARITH_SUBASSIGN; }
135 "*=" { return ARITH_MULASSIGN; }
136 "/=" { return ARITH_DIVASSIGN; }
137 "%=" { return ARITH_REMASSIGN; }
138 ">>=" { return ARITH_RSHASSIGN; }
139 "<<=" { return ARITH_LSHASSIGN; }
140 "&=" { return ARITH_BANDASSIGN; }
141 "^=" { return ARITH_BXORASSIGN; }
142 "|=" { return ARITH_BORASSIGN; }
144 error("arith: syntax error: \"%s\"\n", arith_startbuf);
149 arith_lex_reset(void)
151 struct varname *name, *next;
156 while (name != NULL) {