kakoune/src/highlighter_group.cc

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#include "highlighter_group.hh"
namespace Kakoune
{
static constexpr Codepoint path_separator = '/';
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void HighlighterGroup::operator()(const Context& context, HighlightFlags flags, DisplayBuffer& display_buffer) const
{
for (auto& hl : m_highlighters)
hl.second(context, flags, display_buffer);
}
void HighlighterGroup::append(HighlighterAndId&& hl)
{
if (m_highlighters.contains(hl.first))
throw runtime_error("duplicate id: " + hl.first);
m_highlighters.append(std::move(hl));
}
void HighlighterGroup::remove(StringView id)
{
m_highlighters.remove(id);
}
HighlighterGroup& HighlighterGroup::get_group(StringView path)
{
auto sep_it = find(path, path_separator);
StringView id(path.begin(), sep_it);
auto it = m_highlighters.find(id);
if (it == m_highlighters.end())
throw group_not_found("no such id: "_str + id);
if (auto* group = it->second.target<HighlighterGroup>())
{
if (sep_it != path.end())
return group->get_group({sep_it+1, path.end()});
return *group;
}
else if (auto* hier_group = it->second.target<HierachicalHighlighter>())
{
if (sep_it == path.end())
throw group_not_found("not a leaf group: "_str + id);
return hier_group->get_group({sep_it+1, path.end()});
}
else
throw group_not_found("not a group: "_str + id);
}
HighlighterFunc HighlighterGroup::get_highlighter(StringView path) const
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{
auto sep_it = find(path, path_separator);
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StringView id(path.begin(), sep_it);
auto it = m_highlighters.find(id);
if (it == m_highlighters.end())
throw group_not_found("no such id: "_str + id);
if (sep_it == path.end())
return HighlighterFunc{std::ref(it->second)};
else if (auto* group = it->second.target<HighlighterGroup>())
return group->get_highlighter({sep_it+1, path.end()});
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else if (auto* hier_group = it->second.target<HierachicalHighlighter>())
return hier_group->get_highlighter({sep_it+1, path.end()});
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else
throw group_not_found("not a group: "_str + id);
}
template<Completions (HighlighterGroup::*hg_complete)(StringView path, ByteCount cursor_pos) const,
Completions (HierachicalHighlighter::*hh_complete)(StringView path, ByteCount cursor_pos) const,
typename Condition>
Completions complete_impl(const id_map<HighlighterFunc>& highlighters, Condition condition,
StringView path, ByteCount cursor_pos)
{
auto sep_it = find(path, path_separator);
StringView id(path.begin(), sep_it);
if (sep_it == path.end())
return { 0_byte, path.length(), highlighters.complete_id_if(path, cursor_pos, condition) };
auto it = highlighters.find(id);
if (it != highlighters.end())
{
const ByteCount offset = (int)(sep_it + 1 - path.begin());
cursor_pos -= offset;
if (auto* group = it->second.target<HighlighterGroup>())
return offset_pos((group->*hg_complete)({sep_it+1, path.end()}, cursor_pos), offset);
if (auto* hier_group = it->second.target<HierachicalHighlighter>())
return offset_pos((hier_group->*hh_complete)({sep_it+1, path.end()}, cursor_pos), offset);
}
return {};
}
Completions HighlighterGroup::complete_id(StringView path, ByteCount cursor_pos) const
{
return complete_impl<
&HighlighterGroup::complete_id,
&HierachicalHighlighter::complete_id
>(m_highlighters, [](const HighlighterAndId&) { return true; }, path, cursor_pos);
}
Completions HighlighterGroup::complete_group_id(StringView path, ByteCount cursor_pos) const
{
return complete_impl<
&HighlighterGroup::complete_group_id,
&HierachicalHighlighter::complete_group_id
>(m_highlighters, [](const HighlighterAndId& func) {
return func.second.target<HighlighterGroup>() or
func.second.target<HierachicalHighlighter>();
}, path, cursor_pos);
}
HighlighterGroup& HierachicalHighlighter::get_group(StringView path)
{
auto sep_it = find(path, path_separator);
StringView id(path.begin(), sep_it);
auto it = m_groups.find(id);
if (it == m_groups.end())
throw group_not_found("no such id: "_str + id);
if (sep_it != path.end())
return it->second.get_group(StringView(sep_it+1, path.end()));
else
return it->second;
}
HighlighterFunc HierachicalHighlighter::get_highlighter(StringView path) const
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{
auto sep_it = find(path, path_separator);
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StringView id(path.begin(), sep_it);
auto it = m_groups.find(id);
if (it == m_groups.end())
throw group_not_found("no such id: "_str + id);
if (sep_it != path.end())
return it->second.get_highlighter(StringView(sep_it+1, path.end()));
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else
return HighlighterFunc(std::ref(it->second));
}
template<Completions (HighlighterGroup::*complete)(StringView path, ByteCount cursor_pos) const>
Completions complete_impl(const HierachicalHighlighter::GroupMap& groups,
StringView path, ByteCount cursor_pos)
{
auto sep_it = find(path, path_separator);
StringView id(path.begin(), sep_it);
auto it = groups.find(id);
if (sep_it == path.end())
return { 0_byte, id.length(), groups.complete_id(id, cursor_pos) };
if (it != groups.end())
{
const ByteCount offset = (int)(sep_it + 1- path.begin());
return offset_pos(
(it->second.*complete)({sep_it+1, path.end()},
cursor_pos - offset), offset);
}
return {};
}
Completions HierachicalHighlighter::complete_id(StringView path, ByteCount cursor_pos) const
{
return complete_impl<&HighlighterGroup::complete_id>(m_groups, path, cursor_pos);
}
Completions HierachicalHighlighter::complete_group_id(StringView path, ByteCount cursor_pos) const
{
return complete_impl<&HighlighterGroup::complete_group_id>(m_groups, path, cursor_pos);
}
}