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Dir : ~/usr/share/doc/re2c/examples/c/eof/

View File Name : 03_eof_rule.re

// re2c $INPUT -o $OUTPUT
#include <assert.h>

// Expect a null-terminated string.
static int lex(const char *str, unsigned int len) {
    const char *YYCURSOR = str, *YYLIMIT = str + len, *YYMARKER;
    int count = 0;

    for (;;) {
    /*!re2c
        re2c:define:YYCTYPE = char;
        re2c:yyfill:enable = 0;
        re2c:eof = 0;

        str = ['] ([^'\\] | [\\][^])* ['];

        *    { return -1; }
        $    { return count; }
        str  { ++count; continue; }
        [ ]+ { continue; }
    */
    }
}

#define TEST(s, r) assert(lex(s, sizeof(s) - 1) == r)
int main() {
    TEST("", 0);
    TEST("'qu\0tes' 'are' 'fine: \\'' ", 3);
    TEST("'unterminated\\'", -1);
    return 0;
}