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message/field: cache the message's sexp

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Keep it in the store; much faster than generating on the fly.
This commit is contained in:
Dirk-Jan C. Binnema
2022-05-01 01:13:17 +03:00
parent 263e122a13
commit fea596ae3b
7 changed files with 90 additions and 49 deletions
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32
lib/message/mu-message.hh
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@ -177,12 +177,11 @@ public:
Contacts bcc() const { return document().contacts_value(Field::Id::Bcc); }
/**
* Get the maildir this message lives in; i.e., if the path is
* Get the maildir this message resides in; i.e., if the path is
* ~/Maildir/foo/bar/cur/msg, the maildir would typically be foo/bar
*
* Note that that only messages that live in the store (i.e., are
* constructed use make_from_document() have a non-empty value for
* this.) until set_maildir() is used.
* This is determined when _storing_ the message (which uses
* set_maildir())
*
* @return the maildir requested or empty */
std::string maildir() const { return document().string_value(Field::Id::Maildir); }
@ -245,7 +244,6 @@ public:
return static_cast<::time_t>(document().integer_value(Field::Id::Modified));
}
/**
* get the flags for this message.
*
@ -291,6 +289,16 @@ public:
std::vector<std::string> tags() const {
return document().string_vec_value(Field::Id::Tags);
}
/**
* Get the cached s-expression for this message, or {} if not available.
*
* @return sexp or empty.
*/
std::string cached_sexp() const {
return document().string_value(Field::Id::XCachedSexp);
}
/*
* Convert to Sexp
*/
@ -299,11 +307,19 @@ public:
* convert the message to a Lisp symbolic expression (for further
* processing in e.g. emacs)
*
*
* @return a Mu::Sexp or a Mu::Sexp::List representing the message.
*/
Mu::Sexp::List to_sexp_list(unsigned docid=0) const;
Mu::Sexp to_sexp(unsigned docid=0) const;
Mu::Sexp::List to_sexp_list() const;
Mu::Sexp to_sexp() const;
/**
* Update the cached sexp for this message which is stored in the
* document.This should be done when the document is complete,
* i.e., immediately before storing it in the database.
*
*/
void update_cached_sexp();
/*
* And some non-const message, for updating an existing