From efcea3a80da7c4479d5fe168435ecc9fd06bdc72 Mon Sep 17 00:00:00 2001 From: John Turner Date: Sun, 14 Sep 2025 00:16:10 -0400 Subject: Squashed 'subprojects/boost-sqlite/' content from commit 3378e35 git-subtree-dir: subprojects/boost-sqlite git-subtree-split: 3378e353705271e569cf4ba15c467b840a39798c --- doc/reference/result.adoc | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 doc/reference/result.adoc (limited to 'doc/reference/result.adoc') diff --git a/doc/reference/result.adoc b/doc/reference/result.adoc new file mode 100644 index 0000000..0471b95 --- /dev/null +++ b/doc/reference/result.adoc @@ -0,0 +1,40 @@ +== `sqlite/result.hpp` + +The result header is used by functions and vtables to turn resulting values into +sqlite values. The `tag_invoke` interface is public and meant to extended. + +That is, implementing `tag_invoke(sqlite::set_result_tag, sqlite3_context, T);` +will enable `T` to be used as a result by sqlite. + +[source,cpp] +---- +// The tag +struct set_result_tag {}; + +// built-in result type +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, blob b); +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, zero_blob zb); +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, double dbl) { sqlite3_result_double(ctx, dbl); } +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, sqlite3_int64 value);inline void tag_invoke(set_result_tag, sqlite3_context * ctx, std::int64_t value); +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, std::nullptr_t); +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, string_view str); +template +inline auto tag_invoke(set_result_tag, sqlite3_context * ctx, String && str); +inline void tag_invoke(set_result_tag, sqlite3_context * , variant2::monostate); +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, const value & val); +template +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, const variant2::variant & var); + +template +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, std::unique_ptr ptr); +template +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, std::unique_ptr ptr); +template +inline auto tag_invoke(set_result_tag, sqlite3_context * ctx, std::unique_ptr ptr); +inline void tag_invoke(set_result_tag, sqlite3_context * ctx, error err); +template +inline void tag_invoke(set_result_tag tag, sqlite3_context * ctx, result res); +inline void tag_invoke(set_result_tag tag, sqlite3_context * ctx, result res): +---- + + -- cgit v1.2.3