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LibLine: Correctly track the completion start and end

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To achieve this, the API was tweaked a bit to allow for easier tracking
of completions.
This API change is non-disruptive to any application that does not use
anchored styles.
This commit is contained in:
AnotherTest 2020-05-21 05:14:34 +04:30 • committed by Andreas Kling
parent 5358608a94
commit 0751592a18
3 changed files with 29 additions and 7 deletions
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14
Libraries/LibLine/Editor.h
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@ -169,9 +169,17 @@ public:
void stylize(const Span&, const Style&);
void strip_styles(bool strip_anchored = false);
void suggest(size_t invariant_offset = 0, size_t index = 0) const
// Invariant Offset is an offset into the suggested data, hinting the editor what parts of the suggestion will not change
// Static Offset is an offset into the token, signifying where the suggestions start
// e.g.
// foobar<suggestion initiated>, on_tab_complete returns "barx", "bary", "barz"
// ^ ^
// +-|- static offset: the suggestions start here
// +- invariant offset: the suggestions do not change up to here
void suggest(size_t invariant_offset = 0, size_t static_offset = 0) const
{
m_next_suggestion_index = index;
m_next_suggestion_index = 0;
m_next_suggestion_static_offset = static_offset;
m_next_suggestion_invariant_offset = invariant_offset;
}
@ -207,6 +215,7 @@ private:
enum class ModificationKind {
Insertion,
Removal,
ForcedOverlapRemoval,
};
void readjust_anchored_styles(size_t hint_index, ModificationKind);
@ -322,6 +331,7 @@ private:
bool m_last_shown_suggestion_was_complete { false };
mutable size_t m_next_suggestion_index { 0 };
mutable size_t m_next_suggestion_invariant_offset { 0 };
mutable size_t m_next_suggestion_static_offset { 0 };
size_t m_largest_common_suggestion_prefix_length { 0 };
size_t m_last_displayed_suggestion_index { 0 };