// Lexer Test Example1
// Currently not valid ZINC code

static void print_token(Token token) {
    printf("Token: %-15s | Text: '%.*s'\n",
        (const char *[]){
            "EOF", "IDENTIFIER", "NUMBER", "OPERATOR",
            "LPAREN", "RPAREN", "SEMICOLON", "UNKNOWN"
        }[token.type_],
        (int)token.length, token.start
    );
}

int main(void) {
    const char *filename = "test/example1.zn";
    FILE *file = fopen(filename, "rb");
    if (!file) {
        fprintf(stderr, "Failed to open file: %s\n", filename);
        return 1;
    }
    fseek(file, 0, SEEK_END);
    long filesize = ftell(file);
    fseek(file, 0, SEEK_SET);
    char *source = malloc(filesize + 1);
    if (!source) {
        fprintf(stderr, "Failed to allocate memory.\n");
        fclose(file);
        return 1;
    }
    fread(source, 1, filesize, file);
    source[filesize] = '\0';
    fclose(file);

    Lexer lexer;
    lexer_init(&lexer, filename, source);

    TokenResult result;
    do {
        result = lexer_next(&lexer);
        if (result.type_ == SYNC_RESULT) {
            print_token(result.result);
        } else {
            fprintf(stderr, "Error: %s\n", result.error.message);
        }
    } while (result.type_ != SYNC_ERROR && result.result.type_ != TOKEN_EOF);

    free(source);
    return 0;
}