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uses_mutated_vars <- function(dots, select) {
if (is_null(select)) {
return(TRUE)
}
vars <- set_names(select$expr, select$name)
mutated_vars <- names(purrr::discard(vars, is_symbol))
if (is_empty(mutated_vars)) {
return(FALSE)
}
any(purrr::map_lgl(dots, expr_uses_var, mutated_vars))
}
expr_uses_var <- function(x, vars) {
if (is.sql(x)) return(TRUE)
if (is_call(x, "sql")) return(TRUE)
if (is_quosure(x)) return(expr_uses_var(quo_get_expr(x), vars))
if (is_symbol(x)) {
return(is_symbol(x, vars))
}
any(purrr::map_lgl(as.list(x[-1]), expr_uses_var, vars))
}
any_expr_uses_sql <- function(dots) {
purrr::some(dots, expr_uses_sql)
}
expr_uses_sql <- function(x) {
if (is.sql(x)) return(TRUE)
if (is_call(x, "sql")) return(TRUE)
if (is_quosure(x)) return(expr_uses_sql(quo_get_expr(x)))
if (!is_call(x)) return(FALSE)
any(purrr::map_lgl(as.list(x[-1]), expr_uses_sql))
}
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