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Copy pathrender_state.lua
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871 lines (764 loc) · 24 KB
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---@class RenderedMessage
---@field message OpencodeMessage Direct reference to message in state.messages
---@field line_start integer? Line where message header starts
---@field line_end integer? Line where message header ends
---@field actions OutputAction[] Actions associated with this message
---@class RenderedPart
---@field part OpencodeMessagePart Direct reference to part in state.messages
---@field message_id string ID of parent message
---@field line_start integer? Line where part starts
---@field line_end integer? Line where part ends
---@field actions table[] Actions associated with this part
---@field targets RenderedTarget[] Targets associated with this part
---@field has_extmarks boolean? Whether the part currently has extmarks applied
---@class RenderState
---@field _messages table<string, RenderedMessage> Message ID -> rendered message
---@field _parts table<string, RenderedPart> Part ID -> rendered part
---@field _part_ranges {[1]: integer, [2]: integer, [3]: string}[] Sorted [line_start, line_end, part_id] for binary search
---@field _message_ranges {[1]: integer, [2]: integer, [3]: string}[] Sorted [line_start, line_end, message_id] for binary search
---@field _ranges_valid boolean Whether range arrays are sorted and up-to-date
---@field _max_line_end integer
---@field _max_line_end_valid boolean
local RenderState = {}
RenderState.__index = RenderState
---@return RenderState
function RenderState.new()
local self = setmetatable({}, RenderState)
self:reset()
return self
end
function RenderState:reset()
self._messages = {}
self._parts = {}
self._orphan_parts = {}
self._orphan_parts_index = {}
self._part_ranges = {}
self._message_ranges = {}
self._ranges_valid = false
self._max_line_end = 0
self._max_line_end_valid = true
self._child_session_parts = {}
self._child_session_parts_index = {} -- session_id -> part_id -> list_index
self._child_session_task_parts = {}
self._task_part_child_sessions = {}
self._snapshot_id_index = {} -- snapshot_id -> OpencodeMessagePart
end
function RenderState:_recompute_max_line_end()
local max_line_end = 0
for _, msg_data in pairs(self._messages) do
if msg_data.line_end and msg_data.line_end > max_line_end then
max_line_end = msg_data.line_end
end
end
for _, part_data in pairs(self._parts) do
if part_data.line_end and part_data.line_end > max_line_end then
max_line_end = part_data.line_end
end
end
self._max_line_end = max_line_end
self._max_line_end_valid = true
return max_line_end
end
---@return integer
function RenderState:_get_max_line_end()
if not self._max_line_end_valid then
return self:_recompute_max_line_end()
end
return self._max_line_end
end
---@param part OpencodeMessagePart?
---@return string?
local function get_child_session_id_for_task_part(part)
if not part or part.tool ~= 'task' then
return nil
end
local part_state = part.state
local metadata = part_state and part_state.metadata
return metadata and metadata.sessionId or nil
end
---@param part_id string
function RenderState:_clear_task_part_child_session(part_id)
local child_session_id = self._task_part_child_sessions[part_id]
if not child_session_id then
return
end
if self._child_session_task_parts[child_session_id] == part_id then
self._child_session_task_parts[child_session_id] = nil
end
self._task_part_child_sessions[part_id] = nil
end
---@param part_id string
---@param part OpencodeMessagePart
function RenderState:_index_task_part_child_session(part_id, part)
self:_clear_task_part_child_session(part_id)
local child_session_id = get_child_session_id_for_task_part(part)
if not child_session_id then
return
end
self._child_session_task_parts[child_session_id] = part_id
self._task_part_child_sessions[part_id] = child_session_id
end
---@param ranges {[1]: integer, [2]: integer, [3]: string}[]
---@param line integer
---@return string?
local function range_lookup(ranges, line)
local lo, hi = 1, #ranges
while lo <= hi do
local mid = math.floor((lo + hi) / 2)
local r = ranges[mid]
if line < r[1] then
hi = mid - 1
elseif line > r[2] then
lo = mid + 1
else
return r[3]
end
end
return nil
end
local function range_before_or_at(ranges, line)
local lo, hi = 1, #ranges
local result = nil
while lo <= hi do
local mid = math.floor((lo + hi) / 2)
local range = ranges[mid]
if range[1] <= line then
result = range[3]
lo = mid + 1
else
hi = mid - 1
end
end
return result
end
function RenderState:_rebuild_ranges()
local part_ranges = {}
for part_id, part_data in pairs(self._parts) do
if part_data.line_start and part_data.line_end then
part_ranges[#part_ranges + 1] = { part_data.line_start, part_data.line_end, part_id }
end
end
table.sort(part_ranges, function(a, b)
return a[1] < b[1]
end)
self._part_ranges = part_ranges
local msg_ranges = {}
for msg_id, msg_data in pairs(self._messages) do
if msg_data.line_start and msg_data.line_end then
msg_ranges[#msg_ranges + 1] = { msg_data.line_start, msg_data.line_end, msg_id }
end
end
table.sort(msg_ranges, function(a, b)
return a[1] < b[1]
end)
self._message_ranges = msg_ranges
self._ranges_valid = true
end
function RenderState:_ensure_ranges()
if not self._ranges_valid then
self:_rebuild_ranges()
end
end
---@param session_id string
---@return OpencodeMessagePart[]?
function RenderState:get_child_session_parts(session_id)
if not session_id then
return nil
end
return self._child_session_parts[session_id]
end
---@param session_id string
---@return string?
function RenderState:get_task_part_by_child_session(session_id)
if not session_id then
return nil
end
return self._child_session_task_parts[session_id]
end
---@param session_id string
---@param part OpencodeMessagePart
function RenderState:upsert_child_session_part(session_id, part)
if not session_id or not part or not part.id then
return
end
local session_parts = self._child_session_parts[session_id]
if not session_parts then
session_parts = {}
self._child_session_parts[session_id] = session_parts
self._child_session_parts_index[session_id] = {}
end
local idx = self._child_session_parts_index[session_id][part.id]
if idx then
session_parts[idx] = part
else
session_parts[#session_parts + 1] = part
self._child_session_parts_index[session_id][part.id] = #session_parts
end
end
---@param message_id string
---@return RenderedMessage?
function RenderState:get_message(message_id)
return self._messages[message_id]
end
---@param messages OpencodeMessage[]
---@param message_id string
---@return RenderedMessage?
function RenderState:get_previous_message(messages, message_id)
for i = #messages, 2, -1 do
local message = messages[i]
if message and message.info and message.info.id == message_id then
local previous_message = messages[i - 1]
return previous_message and previous_message.info and self._messages[previous_message.info.id] or nil
end
end
return nil
end
---@param message_id string
---@param part OpencodeMessagePart
function RenderState:upsert_orphan_part(message_id, part)
if not message_id or not part or not part.id then
return
end
local orphan_parts = self._orphan_parts[message_id]
if not orphan_parts then
orphan_parts = {}
self._orphan_parts[message_id] = orphan_parts
self._orphan_parts_index[message_id] = {}
end
local orphan_index = self._orphan_parts_index[message_id]
local idx = orphan_index[part.id]
if idx then
orphan_parts[idx] = part
else
orphan_parts[#orphan_parts + 1] = part
orphan_index[part.id] = #orphan_parts
end
end
---@param message_id string
---@return OpencodeMessagePart[]
function RenderState:consume_orphan_parts(message_id)
if not message_id then
return {}
end
local orphan_parts = self._orphan_parts[message_id] or {}
self._orphan_parts[message_id] = nil
self._orphan_parts_index[message_id] = nil
return orphan_parts
end
---@param message_id string
---@param part_id string
---@return boolean
function RenderState:remove_orphan_part(message_id, part_id)
local orphan_parts = message_id and self._orphan_parts[message_id]
local orphan_index = message_id and self._orphan_parts_index[message_id]
local idx = orphan_index and orphan_index[part_id]
if not idx then
return false
end
table.remove(orphan_parts, idx)
orphan_index[part_id] = nil
for i = idx, #orphan_parts do
local part = orphan_parts[i]
if part and part.id then
orphan_index[part.id] = i
end
end
if #orphan_parts == 0 then
self._orphan_parts[message_id] = nil
self._orphan_parts_index[message_id] = nil
end
return true
end
---@param message_id string
function RenderState:clear_orphan_parts(message_id)
if not message_id then
return
end
self._orphan_parts[message_id] = nil
self._orphan_parts_index[message_id] = nil
end
---@param line integer 1-indexed
---@return RenderedMessage?
function RenderState:get_message_at_line(line)
self:_ensure_ranges()
local msg_id = range_lookup(self._message_ranges, line)
return msg_id and self._messages[msg_id] or nil
end
---@param part_id string
---@return RenderedPart?
function RenderState:get_part(part_id)
return self._parts[part_id]
end
---@param line integer 1-indexed
---@return RenderedPart?
function RenderState:get_part_at_line(line)
self:_ensure_ranges()
local part_id = range_lookup(self._part_ranges, line)
return part_id and self._parts[part_id] or nil
end
---@param call_id string
---@param message_id string
---@return string?
function RenderState:get_part_by_call_id(call_id, message_id)
local rendered_message = self._messages[message_id]
if rendered_message and rendered_message.message and rendered_message.message.parts then
for _, part in ipairs(rendered_message.message.parts) do
if part.callID == call_id then
return part.id
end
end
end
return nil
end
---@param snapshot_id string
---@return OpencodeMessagePart?
function RenderState:get_part_by_snapshot_id(snapshot_id)
return self._snapshot_id_index[snapshot_id]
end
---@param line integer
---@return table[]
function RenderState:get_actions_at_line(line)
self:_ensure_ranges()
local actions = {}
local message_id = range_before_or_at(self._message_ranges, line)
local message_data = message_id and self._messages[message_id]
for _, action in ipairs(message_data and message_data.actions or {}) do
if action.range and action.range.from <= line and action.range.to >= line then
actions[#actions + 1] = action
end
end
local part_id = range_lookup(self._part_ranges, line)
local part_data = part_id and self._parts[part_id]
for _, action in ipairs(part_data and part_data.actions or {}) do
if action.range and action.range.from <= line and action.range.to >= line then
actions[#actions + 1] = action
end
end
return actions
end
---@param target RenderedTarget
---@param line integer 1-indexed
---@param col integer 0-indexed
---@return boolean
local function target_contains_position(target, line, col)
local range = target.range
return range.line == line and col >= range.start_col and col < range.end_col
end
---@param target RenderedTarget
---@return integer
local function target_priority(target)
if target.kind == 'file' or target.kind == 'diff' then
return 1
end
if target.kind == 'symbol' then
return 2
end
return 3
end
---@param target RenderedTarget
---@return integer
local function target_width(target)
return target.range.end_col - target.range.start_col
end
---@param part_id string
---@param targets OutputTarget[]
---@param offset? integer Line offset to apply to target line numbers
function RenderState:add_targets(part_id, targets, offset)
local part_data = self._parts[part_id]
if not part_data then
return
end
offset = offset or 0
for _, target in ipairs(targets) do
local rendered_target = vim.deepcopy(target)
rendered_target.range.line = rendered_target.range.line + offset
rendered_target.part_id = part_id
rendered_target.message_id = part_data.message_id
part_data.targets[#part_data.targets + 1] = rendered_target
end
end
---@param part_id string
function RenderState:clear_targets(part_id)
local part_data = self._parts[part_id]
if part_data then
part_data.targets = {}
end
end
---@param line integer 1-indexed
---@param col integer 0-indexed
---@param filter? fun(target: RenderedTarget): boolean
---@return RenderedTarget?
function RenderState:get_target_at_position(line, col, filter)
local best = nil
local best_priority = nil
local best_width = nil
for _, part_data in pairs(self._parts) do
for _, target in ipairs(part_data.targets or {}) do
if target_contains_position(target, line, col) and (not filter or filter(target)) then
local priority = target_priority(target)
local width = target_width(target)
if not best or priority < best_priority or (priority == best_priority and width < best_width) then
best = target
best_priority = priority
best_width = width
end
end
end
end
return best and vim.deepcopy(best) or nil
end
---@param part_id string
---@param actions table[]
---@param offset? integer Line offset to apply to action line numbers
function RenderState:add_actions(part_id, actions, offset)
local part_data = self._parts[part_id]
if not part_data then
return
end
offset = offset or 0
for _, action in ipairs(actions) do
if offset ~= 0 then
if action.display_line then
action.display_line = action.display_line + offset
end
if action.range then
action.range.from = action.range.from + offset
action.range.to = action.range.to + offset
end
end
part_data.actions[#part_data.actions + 1] = action
end
end
---@param part_id string
function RenderState:clear_actions(part_id)
local part_data = self._parts[part_id]
if part_data then
part_data.actions = {}
end
end
---@return table[]
function RenderState:get_all_actions()
local all_actions = {}
for _, message_data in pairs(self._messages) do
for _, action in ipairs(message_data.actions or {}) do
all_actions[#all_actions + 1] = action
end
end
for _, part_data in pairs(self._parts) do
if part_data.actions then
for _, action in ipairs(part_data.actions) do
all_actions[#all_actions + 1] = action
end
end
end
return all_actions
end
local function is_actionable_user_message(message)
local info = message and message.info
if not info or info.role ~= 'user' or type(info.id) ~= 'string' or info.id == '' then
return false
end
for _, part in ipairs(message.parts or {}) do
if part.type == 'text' and part.synthetic ~= true and type(part.text) == 'string' and vim.trim(part.text) ~= '' then
return true
end
end
return false
end
function RenderState:_refresh_message_actions(message_id)
local message_data = self._messages[message_id]
if not message_data or not message_data.line_start or not message_data.line_end then
return
end
if not is_actionable_user_message(message_data.message) then
message_data.actions = {}
return
end
local line_end = message_data.line_end
for _, part in ipairs(message_data.message.parts or {}) do
local part_data = part.id and self._parts[part.id]
if part_data and part_data.line_end then
line_end = math.max(line_end, part_data.line_end)
end
end
local id = message_data.message.info.id
local function action(text, action_type, key)
return {
text = text,
type = action_type,
args = { id },
key = key,
display_line = line_end,
range = { from = message_data.line_start, to = line_end },
}
end
message_data.actions = {
action('[R]evert', 'undo', 'R'),
action('[C]opy', 'copy_message', 'C'),
action('[F]ork', 'fork_session', 'F'),
}
end
---@param targets RenderedTarget[]
---@param delta integer
local function shift_targets(targets, delta)
for _, target in ipairs(targets or {}) do
target.range.line = target.range.line + delta
end
end
---@param message OpencodeMessage
---@param line_start integer?
---@param line_end integer?
function RenderState:set_message(message, line_start, line_end)
if not message or not message.info or not message.info.id then
return
end
local message_id = message.info.id
local existing = self._messages[message_id]
if not existing then
self._messages[message_id] = {
message = message,
line_start = line_start,
line_end = line_end,
actions = {},
}
else
existing.message = message
if line_start then
existing.line_start = line_start
end
if line_end then
existing.line_end = line_end
end
end
if line_start and line_end then
self._ranges_valid = false
if self._max_line_end_valid and line_end > self._max_line_end then
self._max_line_end = line_end
end
end
self:_refresh_message_actions(message_id)
end
---@param part OpencodeMessagePart
---@param line_start integer?
---@param line_end integer?
function RenderState:set_part(part, line_start, line_end)
if not part or not part.id then
return
end
local part_id = part.id
local message_id = part.messageID or 'special'
local existing = self._parts[part_id]
if not existing then
self._parts[part_id] = {
part = part,
message_id = message_id,
line_start = line_start,
line_end = line_end,
actions = {},
targets = {},
has_extmarks = false,
}
else
existing.part = part
if message_id then
existing.message_id = message_id
end
if line_start and existing.line_start and existing.line_start ~= line_start then
shift_targets(existing.targets, line_start - existing.line_start)
end
if line_start then
existing.line_start = line_start
end
if line_end then
existing.line_end = line_end
end
end
if line_start and line_end then
self._ranges_valid = false
if self._max_line_end_valid and line_end > self._max_line_end then
self._max_line_end = line_end
end
end
if part.type == 'patch' and part.hash then
self._snapshot_id_index[part.hash] = part
end
self:_index_task_part_child_session(part_id, part)
self:_refresh_message_actions(message_id)
end
---@param part_id string
---@param new_line_start integer
---@param new_line_end integer
---@return boolean
function RenderState:update_part_lines(part_id, new_line_start, new_line_end)
local part_data = self._parts[part_id]
if not part_data or not part_data.line_start or not part_data.line_end then
return false
end
if part_data.line_start == new_line_start and part_data.line_end == new_line_end then
return true
end
local old_line_end = part_data.line_end
local old_line_start = part_data.line_start
local old_line_count = old_line_end - part_data.line_start + 1
local new_line_count = new_line_end - new_line_start + 1
local delta = new_line_count - old_line_count
part_data.line_start = new_line_start
part_data.line_end = new_line_end
if old_line_start ~= new_line_start then
shift_targets(part_data.targets, new_line_start - old_line_start)
end
self._ranges_valid = false
if self._max_line_end_valid then
if old_line_end == self._max_line_end and new_line_end < old_line_end then
self._max_line_end_valid = false
elseif new_line_end > self._max_line_end then
self._max_line_end = new_line_end
end
end
if delta ~= 0 then
self:shift_all(old_line_end + 1, delta)
end
self:_refresh_message_actions(part_data.message_id)
return true
end
---@param part_ref OpencodeMessagePart
---@return RenderedPart?
function RenderState:update_part_data(part_ref)
if not part_ref or not part_ref.id then
return
end
local rendered_part = self._parts[part_ref.id]
if not rendered_part then
return
end
rendered_part.part = part_ref
if part_ref.type == 'patch' and part_ref.hash then
self._snapshot_id_index[part_ref.hash] = part_ref
end
self:_index_task_part_child_session(part_ref.id, part_ref)
self:_refresh_message_actions(rendered_part.message_id)
return rendered_part
end
---@param part_id string
---@return boolean
function RenderState:remove_part(part_id)
local part_data = self._parts[part_id]
if not part_data then
return false
end
if part_data.part and part_data.part.type == 'patch' and part_data.part.hash then
self._snapshot_id_index[part_data.part.hash] = nil
end
self:_clear_task_part_child_session(part_id)
if not part_data.line_start or not part_data.line_end then
self._parts[part_id] = nil
self:_refresh_message_actions(part_data.message_id)
return true
end
local line_count = part_data.line_end - part_data.line_start + 1
local shift_from = part_data.line_end + 1
self._parts[part_id] = nil
self._ranges_valid = false
if self._max_line_end_valid and part_data.line_end == self._max_line_end then
self._max_line_end_valid = false
end
self:shift_all(shift_from, -line_count)
self:_refresh_message_actions(part_data.message_id)
return true
end
---@param message_id string
---@return boolean
function RenderState:remove_message(message_id)
local msg_data = self._messages[message_id]
if not msg_data or not msg_data.line_start or not msg_data.line_end then
return false
end
local line_count = msg_data.line_end - msg_data.line_start + 1
local shift_from = msg_data.line_end + 1
self._messages[message_id] = nil
self._ranges_valid = false
if self._max_line_end_valid and msg_data.line_end == self._max_line_end then
self._max_line_end_valid = false
end
self:shift_all(shift_from, -line_count)
return true
end
local function shift_action(action, delta)
if action.display_line then
action.display_line = action.display_line + delta
end
if action.range then
action.range.from = action.range.from + delta
action.range.to = action.range.to + delta
end
end
--- Binary-search sorted ranges for the first entry whose line_start >= from_line.
--- Returns the index, or #ranges + 1 if none qualify.
---@param ranges {[1]: integer, [2]: integer, [3]: string}[]
---@param from_line integer
---@return integer
local function first_range_at_or_after(ranges, from_line)
local lo, hi = 1, #ranges
local result = #ranges + 1
while lo <= hi do
local mid = math.floor((lo + hi) / 2)
if ranges[mid][1] >= from_line then
result = mid
hi = mid - 1
else
lo = mid + 1
end
end
return result
end
function RenderState:shift_all(from_line, delta)
if delta == 0 then
return
end
if from_line > self:_get_max_line_end() then
return
end
-- Build fresh sorted ranges so we can search for the first entry at
-- or after from_line, then iterate only the suffix that needs shifting.
self:_rebuild_ranges()
local shifted = false
local action_messages = {}
local msg_ranges = self._message_ranges
local first_msg = first_range_at_or_after(msg_ranges, from_line)
for i = first_msg, #msg_ranges do
local msg_data = self._messages[msg_ranges[i][3]]
if msg_data then
msg_data.line_start = msg_data.line_start + delta
msg_data.line_end = msg_data.line_end + delta
shifted = true
for _, action in ipairs(msg_data.actions or {}) do
shift_action(action, delta)
end
end
end
local part_ranges = self._part_ranges
local first_part = first_range_at_or_after(part_ranges, from_line)
for i = first_part, #part_ranges do
local part_data = self._parts[part_ranges[i][3]]
if part_data then
part_data.line_start = part_data.line_start + delta
part_data.line_end = part_data.line_end + delta
shifted = true
action_messages[part_data.message_id] = true
for _, action in ipairs(part_data.actions) do
shift_action(action, delta)
end
shift_targets(part_data.targets, delta)
end
end
if shifted then
self._ranges_valid = false
if self._max_line_end_valid then
self._max_line_end = self._max_line_end + delta
end
end
for message_id in pairs(action_messages) do
self:_refresh_message_actions(message_id)
end
end
return RenderState