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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
Notes: sideshowbarker 2024-07-17 17:53:03 +09:00 
Author: https://github.com/alimpfard
Commit: https://github.com/SerenityOS/serenity/commit/118590325a
Pull-request: https://github.com/SerenityOS/serenity/pull/12903
6 changed files with 79 additions and 51 deletions
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7
Userland/Libraries/LibLine/Editor.cpp
View file

@ -489,7 +489,7 @@ void Editor::stylize(Span const& span, Style const& style)
ending_map.set(start, style);
}
void Editor::suggest(size_t invariant_offset, size_t static_offset, Span::Mode offset_mode) const
void Editor::transform_suggestion_offsets(size_t& invariant_offset, size_t& static_offset, Span::Mode offset_mode) const
{
auto internal_static_offset = static_offset;
auto internal_invariant_offset = invariant_offset;
@ -501,7 +501,8 @@ void Editor::suggest(size_t invariant_offset, size_t static_offset, Span::Mode o
internal_static_offset = offsets.start;
internal_invariant_offset = offsets.end - offsets.start;
}
m_suggestion_manager.set_suggestion_variants(internal_static_offset, internal_invariant_offset, 0);
invariant_offset = internal_invariant_offset;
static_offset = internal_static_offset;
}
void Editor::initialize()
@ -1141,7 +1142,6 @@ void Editor::handle_read_event()
// We have none, or just one suggestion,
// we should just commit that and continue
// after it, as if it were auto-completed.
suggest(0, 0, Span::CodepointOriented);
m_times_tab_pressed = 0;
m_suggestion_manager.reset();
m_suggestion_display->finish();
@ -1180,7 +1180,6 @@ void Editor::cleanup_suggestions()
m_refresh_needed = true;
}
m_suggestion_manager.reset();
suggest(0, 0, Span::CodepointOriented);
m_suggestion_display->finish();
}
m_times_tab_pressed = 0; // Safe to say if we get here, the user didn't press TAB

2
Userland/Libraries/LibLine/Editor.h
View file

@ -221,7 +221,7 @@ public:
// +-|- 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, Span::Mode offset_mode = Span::ByteOriented) const;
void transform_suggestion_offsets(size_t& invariant_offset, size_t& static_offset, Span::Mode offset_mode = Span::ByteOriented) const;
const struct termios& termios() const { return m_termios; }
const struct termios& default_termios() const { return m_default_termios; }

20
Userland/Libraries/LibLine/SuggestionManager.cpp
View file

@ -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();

10
Userland/Libraries/LibLine/SuggestionManager.h
View file

@ -53,6 +53,8 @@ public:
Style style;
size_t start_index { 0 };
size_t input_offset { 0 };
size_t static_offset { 0 };
size_t invariant_offset { 0 };
Utf32View text_view;
Utf32View trivia_view;
@ -102,12 +104,6 @@ public:
void next();
void previous();
void set_suggestion_variants(size_t static_offset, size_t invariant_offset, size_t suggestion_index) const
{
m_next_suggestion_index = suggestion_index;
m_next_suggestion_static_offset = static_offset;
m_next_suggestion_invariant_offset = invariant_offset;
}
CompletionSuggestion const& suggest();
CompletionSuggestion const& current_suggestion() const { return m_last_shown_suggestion; }
@ -131,8 +127,6 @@ private:
size_t m_last_shown_suggestion_display_length { 0 };
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 };
mutable size_t m_last_displayed_suggestion_index { 0 };
size_t m_selected_suggestion_index { 0 };

82
Userland/Shell/Shell.cpp
View file

@ -1416,8 +1416,10 @@ Vector<Line::CompletionSuggestion> Shell::complete_path(StringView base,
// since we are not suggesting anything starting with
// `/foo/', but rather just `bar...'
auto token_length = escape_token(token).length();
size_t static_offset = last_slash + 1;
auto invariant_offset = token_length;
if (m_editor)
m_editor->suggest(token_length, last_slash + 1);
m_editor->transform_suggestion_offsets(invariant_offset, static_offset);
// only suggest dot-files if path starts with a dot
Core::DirIterator files(path,
@ -1440,6 +1442,8 @@ Vector<Line::CompletionSuggestion> Shell::complete_path(StringView base,
suggestions.append({ escape_token(file), " " });
}
suggestions.last().input_offset = token_length;
suggestions.last().invariant_offset = invariant_offset;
suggestions.last().static_offset = static_offset;
}
}
}
@ -1465,8 +1469,10 @@ Vector<Line::CompletionSuggestion> Shell::complete_program_name(StringView name,
String completion = *match;
auto token_length = escape_token(name).length();
auto invariant_offset = token_length;
size_t static_offset = 0;
if (m_editor)
m_editor->suggest(token_length, 0);
m_editor->transform_suggestion_offsets(invariant_offset, static_offset);
// Now that we have a program name starting with our token, we look at
// other program names starting with our token and cut off any mismatching
@ -1475,16 +1481,17 @@ Vector<Line::CompletionSuggestion> Shell::complete_program_name(StringView name,
Vector<Line::CompletionSuggestion> suggestions;
int index = match - cached_path.data();
for (int i = index - 1; i >= 0 && cached_path[i].starts_with(name); --i) {
for (int i = index - 1; i >= 0 && cached_path[i].starts_with(name); --i)
suggestions.append({ cached_path[i], " " });
suggestions.last().input_offset = token_length;
}
for (size_t i = index + 1; i < cached_path.size() && cached_path[i].starts_with(name); ++i) {
for (size_t i = index + 1; i < cached_path.size() && cached_path[i].starts_with(name); ++i)
suggestions.append({ cached_path[i], " " });
suggestions.last().input_offset = token_length;
}
suggestions.append({ cached_path[index], " " });
suggestions.last().input_offset = token_length;
for (auto& entry : suggestions) {
entry.input_offset = token_length;
entry.invariant_offset = invariant_offset;
entry.static_offset = static_offset;
}
return suggestions;
}
@ -1494,8 +1501,10 @@ Vector<Line::CompletionSuggestion> Shell::complete_variable(StringView name, siz
Vector<Line::CompletionSuggestion> suggestions;
auto pattern = offset ? name.substring_view(0, offset) : "";
auto invariant_offset = offset;
size_t static_offset = 0;
if (m_editor)
m_editor->suggest(offset);
m_editor->transform_suggestion_offsets(invariant_offset, static_offset);
// Look at local variables.
for (auto& frame : m_local_frames) {
@ -1516,10 +1525,15 @@ Vector<Line::CompletionSuggestion> Shell::complete_variable(StringView name, siz
if (suggestions.contains_slow(name))
continue;
suggestions.append(move(name));
suggestions.last().input_offset = offset;
}
}
for (auto& entry : suggestions) {
entry.input_offset = offset;
entry.invariant_offset = invariant_offset;
entry.static_offset = static_offset;
}
return suggestions;
}
@ -1528,8 +1542,10 @@ Vector<Line::CompletionSuggestion> Shell::complete_user(StringView name, size_t
Vector<Line::CompletionSuggestion> suggestions;
auto pattern = offset ? name.substring_view(0, offset) : "";
auto invariant_offset = offset;
size_t static_offset = 0;
if (m_editor)
m_editor->suggest(offset);
m_editor->transform_suggestion_offsets(invariant_offset, static_offset);
Core::DirIterator di("/home", Core::DirIterator::SkipParentAndBaseDir);
@ -1540,7 +1556,10 @@ Vector<Line::CompletionSuggestion> Shell::complete_user(StringView name, size_t
String name = di.next_path();
if (name.starts_with(pattern)) {
suggestions.append(name);
suggestions.last().input_offset = offset;
auto& suggestion = suggestions.last();
suggestion.input_offset = offset;
suggestion.invariant_offset = invariant_offset;
suggestion.static_offset = static_offset;
}
}
@ -1553,8 +1572,10 @@ Vector<Line::CompletionSuggestion> Shell::complete_option(StringView program_nam
while (start < option.length() && option[start] == '-' && start < 2)
++start;
auto option_pattern = offset > start ? option.substring_view(start, offset - start) : "";
auto invariant_offset = offset;
size_t static_offset = 0;
if (m_editor)
m_editor->suggest(offset);
m_editor->transform_suggestion_offsets(invariant_offset, static_offset);
Vector<Line::CompletionSuggestion> suggestions;
@ -1579,13 +1600,18 @@ Vector<Line::CompletionSuggestion> Shell::complete_option(StringView program_nam
return builder.to_string();
};
#define __ENUMERATE_SHELL_OPTION(name, d_, descr_) \
if (#name##sv.starts_with(option_pattern)) { \
suggestions.append(maybe_negate(#name)); \
suggestions.last().input_offset = offset; \
}
if (#name##sv.starts_with(option_pattern)) \
suggestions.append(maybe_negate(#name));
ENUMERATE_SHELL_OPTIONS();
#undef __ENUMERATE_SHELL_OPTION
for (auto& entry : suggestions) {
entry.input_offset = offset;
entry.invariant_offset = invariant_offset;
entry.static_offset = static_offset;
}
return suggestions;
}
}
@ -1596,18 +1622,24 @@ Vector<Line::CompletionSuggestion> Shell::complete_immediate_function_name(Strin
{
Vector<Line::CompletionSuggestion> suggestions;
#define __ENUMERATE_SHELL_IMMEDIATE_FUNCTION(fn_name) \
if (auto name_view = #fn_name##sv; name_view.starts_with(name)) { \
suggestions.append({ name_view, " " }); \
suggestions.last().input_offset = offset; \
}
auto invariant_offset = offset;
size_t static_offset = 0;
if (m_editor)
m_editor->transform_suggestion_offsets(invariant_offset, static_offset);
#define __ENUMERATE_SHELL_IMMEDIATE_FUNCTION(fn_name) \
if (auto name_view = #fn_name##sv; name_view.starts_with(name)) \
suggestions.append({ name_view, " " });
ENUMERATE_SHELL_IMMEDIATE_FUNCTIONS();
#undef __ENUMERATE_SHELL_IMMEDIATE_FUNCTION
if (m_editor)
m_editor->suggest(offset);
for (auto& entry : suggestions) {
entry.input_offset = offset;
entry.invariant_offset = invariant_offset;
entry.static_offset = static_offset;
}
return suggestions;
}

9
Userland/Utilities/js.cpp
View file

@ -1580,6 +1580,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
Line::CompletionSuggestion completion { key, Line::CompletionSuggestion::ForSearch };
if (!results.contains_slow(completion)) { // hide duplicates
results.append(String(key));
results.last().invariant_offset = property_pattern.length();
}
}
}
@ -1605,8 +1606,6 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
auto const* object = MUST(variable.to_object(interpreter->global_object()));
auto const& shape = object->shape();
list_all_properties(shape, property_name);
if (results.size())
editor.suggest(property_name.length());
break;
}
case CompleteVariable: {
@ -1614,12 +1613,12 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
list_all_properties(variable.shape(), variable_name);
for (String& name : global_environment.declarative_record().bindings()) {
if (name.starts_with(variable_name))
if (name.starts_with(variable_name)) {
results.empend(name);
results.last().invariant_offset = variable_name.length();
}
}
if (results.size())
editor.suggest(variable_name.length());
break;
}
default: