Function append_args_json

src/pipeline/pass_parallel.c:1486–1519

}

static size_t append_args_json(char *buf, size_t bufsize, size_t pos, const CBMCall *call) {
    if (call->arg_count == 0 || pos >= bufsize - PP_ARGS_MARGIN) {
        return pos;
    }
    int n = snprintf(buf + pos, bufsize - pos, ",\"args\":[");
    if (n <= 0) {
        return pos;
    }
    pos += (size_t)n;
    for (int i = 0; i < call->arg_count && pos < bufsize - CBM_ARG_JSON_GUARD; i++) {
        const CBMCallArg *a = &call->args[i];
        size_t mark = pos; /* rollback point (before the separator) */
        if (i > 0 && pos < bufsize - SKIP_ONE) {
            buf[pos++] = ',';
        }
        char expr_buf[CBM_SZ_128];
        sanitize_expr(expr_buf, a->expr);
        n = format_call_arg(buf + pos, bufsize - pos, a, expr_buf);
        /* snprintf returns the UNtruncated length: if the arg did not fully
         * fit, advancing pos by n would push it past buf and the buf[pos]
         * writes below would overflow. Drop the arg whole (atomic field —
         * keeps the array valid) and stop appending. */
        if (n <= 0 || (size_t)n >= bufsize - pos) {
            pos = mark;
            break;
        }
        pos += (size_t)n;
    }
    if (pos < bufsize - SKIP_ONE) {
        buf[pos++] = ']';
    }
    buf[pos] = '\0';
    return pos;
}

/* Scan call args for a URL-like route path and handler reference. */
static bool is_path_keyword(const char *keyword) {