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Expose "and_then" on coral::expected

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kayomn 2023-02-28 14:08:14 +00:00
parent d6f6bc246e
commit d6f08efd55
1 changed files with 9 additions and 2 deletions
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11
source/coral.cpp
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@ -446,7 +446,7 @@ export namespace coral {
template<typename value> using rebound = expected<value, errors>; template<typename value> using rebound = expected<value, errors>;
/** /**
* Constructs from `value`, creating an [expected] that contains the expected type. * Constructs from `value`, creating an [expected] with the expected type.
*/ */
expected(expects const & value) { expected(expects const & value) {
(*reinterpret_cast<expects *>(this->buffer)) = value; (*reinterpret_cast<expects *>(this->buffer)) = value;
@ -454,12 +454,19 @@ export namespace coral {
} }
/** /**
* Constructs from `error`, creating an [expected] that does not contain the expected type. * Constructs from `error`, creating an [expected] with an error.
*/ */
expected(errors const & error) { expected(errors const & error) {
(*reinterpret_cast<errors *>(this->buffer)) = error; (*reinterpret_cast<errors *>(this->buffer)) = error;
} }
/**
* Invokes the `apply` procedure if the expected is not ok, otherwise having no side-effects.
*/
void and_then(closure<void(expects &)> const & apply) {
if (this->is_ok()) apply(**this);
}
/** /**
* Returns the contained error as an [optional]. * Returns the contained error as an [optional].
*/ */