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LibLine+Userland: Make suggestion offsets per-suggestion

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This allows the user to modify different parts of the input with
different suggestions.
This commit is contained in:
Ali Mohammad Pur 2022-02-28 17:28:47 +03:30 • committed by Andreas Kling
parent 1fcef99ff7
commit 118590325a
6 changed files with 79 additions and 51 deletions
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20
Userland/Libraries/LibLine/SuggestionManager.cpp
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@ -84,10 +84,12 @@ CompletionSuggestion const& SuggestionManager::suggest()
void SuggestionManager::set_current_suggestion_initiation_index(size_t index)
{
auto& suggestion = m_suggestions[m_next_suggestion_index];
if (m_last_shown_suggestion_display_length)
m_last_shown_suggestion.start_index = index - m_next_suggestion_static_offset - m_last_shown_suggestion_display_length;
m_last_shown_suggestion.start_index = index - suggestion.static_offset - m_last_shown_suggestion_display_length;
else
m_last_shown_suggestion.start_index = index - m_next_suggestion_static_offset - m_next_suggestion_invariant_offset;
m_last_shown_suggestion.start_index = index - suggestion.static_offset - suggestion.invariant_offset;
m_last_shown_suggestion_display_length = m_last_shown_suggestion.text_view.length();
m_last_shown_suggestion_was_complete = true;
@ -98,7 +100,9 @@ SuggestionManager::CompletionAttemptResult SuggestionManager::attempt_completion
CompletionAttemptResult result { mode };
if (m_next_suggestion_index < m_suggestions.size()) {
auto can_complete = m_next_suggestion_invariant_offset <= m_largest_common_suggestion_prefix_length;
auto& next_suggestion = m_suggestions[m_next_suggestion_index];
auto can_complete = next_suggestion.invariant_offset <= m_largest_common_suggestion_prefix_length;
ssize_t actual_offset;
size_t shown_length = m_last_shown_suggestion_display_length;
switch (mode) {
@ -106,7 +110,7 @@ SuggestionManager::CompletionAttemptResult SuggestionManager::attempt_completion
actual_offset = 0;
break;
case ShowSuggestions:
actual_offset = 0 - m_largest_common_suggestion_prefix_length + m_next_suggestion_invariant_offset;
actual_offset = 0 - m_largest_common_suggestion_prefix_length + next_suggestion.invariant_offset;
if (can_complete)
shown_length = m_largest_common_suggestion_prefix_length + m_last_shown_suggestion.trivia_view.length();
break;
@ -114,11 +118,11 @@ SuggestionManager::CompletionAttemptResult SuggestionManager::attempt_completion
if (m_last_shown_suggestion_display_length == 0)
actual_offset = 0;
else
actual_offset = 0 - m_last_shown_suggestion_display_length + m_next_suggestion_invariant_offset;
actual_offset = 0 - m_last_shown_suggestion_display_length + next_suggestion.invariant_offset;
break;
}
result.offset_region_to_remove = { m_next_suggestion_invariant_offset, shown_length };
result.offset_region_to_remove = { next_suggestion.invariant_offset, shown_length };
result.new_cursor_offset = actual_offset;
auto& suggestion = suggest();
@ -127,7 +131,7 @@ SuggestionManager::CompletionAttemptResult SuggestionManager::attempt_completion
if (mode == CompletePrefix) {
// Only auto-complete *if possible*.
if (can_complete) {
result.insert.append(suggestion.text_view.substring_view(m_next_suggestion_invariant_offset, m_largest_common_suggestion_prefix_length - m_next_suggestion_invariant_offset));
result.insert.append(suggestion.text_view.substring_view(suggestion.invariant_offset, m_largest_common_suggestion_prefix_length - suggestion.invariant_offset));
m_last_shown_suggestion_display_length = m_largest_common_suggestion_prefix_length;
// Do not increment the suggestion index, as the first tab should only be a *peek*.
if (m_suggestions.size() == 1) {
@ -147,7 +151,7 @@ SuggestionManager::CompletionAttemptResult SuggestionManager::attempt_completion
m_last_shown_suggestion_was_complete = false;
m_last_shown_suggestion = String::empty();
} else {
result.insert.append(suggestion.text_view.substring_view(m_next_suggestion_invariant_offset, suggestion.text_view.length() - m_next_suggestion_invariant_offset));
result.insert.append(suggestion.text_view.substring_view(suggestion.invariant_offset, suggestion.text_view.length() - suggestion.invariant_offset));
// Add in the trivia of the last selected suggestion.
result.insert.append(suggestion.trivia_view);
m_last_shown_suggestion_display_length += suggestion.trivia_view.length();