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feat(kernel): add static_assert for update_metavar

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2013-10-01 17:56:10 -07:00
parent 61ccaf741c
commit 827c65b5e9
1 changed files with 4 additions and 0 deletions
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4
src/kernel/expr.h
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@ -587,6 +587,8 @@ template<typename F> expr update_eq(expr const & e, F f) {
return e;
}
template<typename F> expr update_metavar(expr const & e, name const & n, F f) {
static_assert(std::is_same<typename std::result_of<F(local_entry const &)>::type, local_entry>::value,
"update_metavar: return type of f(local_entry) is not local_entry");
buffer<local_entry> new_entries;
bool modified = n != metavar_name(e);
for (local_entry const & me : metavar_lctx(e)) {
@ -607,6 +609,8 @@ template<typename F> expr update_metavar(expr const & e, name const & n, F f) {
return e;
}
template<typename F> expr update_metavar(expr const & e, F f) {
static_assert(std::is_same<typename std::result_of<F(local_entry const &)>::type, local_entry>::value,
"update_metavar: return type of f(local_entry) is not local_entry");
return update_metavar(e, metavar_name(e), f);
}
inline expr update_metavar(expr const & e, local_context const & lctx) {