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local guide = require 'parser.guide'
local files = require 'files'
local encoder = require 'encoder'
local offsetEncoding = 'utf16'
---@class converter
local m = {}
---@alias position {line: integer, character: integer}
---@param row integer
---@param col integer
---@return position
function m.position(row, col)
return {
line = row,
character = col,
}
end
---@param state parser.state
---@param pos integer
---@return position
local function rawPackPosition(state, pos)
local row, col = guide.rowColOf(pos)
if col > 0 then
local text = state.lua
if state and text then
local lineOffset = state.lines[row]
if lineOffset then
local start = lineOffset
local finish = lineOffset + col - 1
if start <= #text and finish <= #text then
col = encoder.len(offsetEncoding, text, lineOffset, lineOffset + col - 1)
end
else
col = 0
end
end
end
return {
line = row,
character = col,
}
end
---@param state parser.state
---@param pos integer
---@return position
local function diffedPackPosition(state, pos)
local offset = guide.positionToOffset(state, pos)
local originOffset = files.diffedOffsetBack(state, offset)
local originPos = guide.offsetToPositionByLines(state.originLines, originOffset)
local row, col = guide.rowColOf(originPos)
if col > 0 then
local text = state.originText
if text then
local lineOffset = state.originLines[row]
local finalOffset = math.min(lineOffset + col - 1, #text + 1)
col = encoder.len(offsetEncoding, text, lineOffset, finalOffset)
end
end
return {
line = row,
character = col,
}
end
---@param state parser.state
---@param pos integer
---@return position
function m.packPosition(state, pos)
if files.hasDiffed(state) then
return diffedPackPosition(state, pos)
else
return rawPackPosition(state, pos)
end
end
---@param state parser.state
---@param position position
---@return integer
local function rawUnpackPosition(state, position)
local row, col = position.line, position.character
if col > 0 then
local text = state.lua
if state and text then
local lineOffset = state.lines[row]
local textOffset = encoder.offset(offsetEncoding, text, col + 1, lineOffset)
if textOffset and lineOffset then
col = textOffset - lineOffset
end
end
end
local pos = guide.positionOf(row, col)
return pos
end
---@param state parser.state
---@param position position
---@return integer
local function diffedUnpackPosition(state, position)
local row, col = position.line, position.character
if col > 0 then
local lineOffset = state.originLines[row]
if lineOffset then
local textOffset = encoder.offset(offsetEncoding, state.originText, col + 1, lineOffset)
if textOffset and lineOffset then
col = textOffset - lineOffset
end
end
end
local originPos = guide.positionOf(row, col)
local originOffset = guide.positionToOffsetByLines(state.originLines, originPos)
local offset = files.diffedOffset(state, originOffset)
local pos = guide.offsetToPosition(state, offset)
return pos
end
---@param state parser.state
---@param position position
---@return integer
function m.unpackPosition(state, position)
if files.hasDiffed(state) then
return diffedUnpackPosition(state, position)
else
return rawUnpackPosition(state, position)
end
end
---@alias range {start: position, end: position}
---@param state parser.state
---@param start integer
---@param finish integer
---@return range
function m.packRange(state, start, finish)
local range = {
start = m.packPosition(state, start),
['end'] = m.packPosition(state, finish),
}
return range
end
---@param start position
---@param finish position
---@return range
function m.range(start, finish)
return {
start = start,
['end'] = finish,
}
end
---@param state parser.state
---@param range range
---@return integer start
---@return integer finish
function m.unpackRange(state, range)
local start = m.unpackPosition(state, range.start)
local finish = m.unpackPosition(state, range['end'])
return start, finish
end
---@alias location {uri: uri, range: range}
---@param uri string
---@param range range
---@return location
function m.location(uri, range)
return {
uri = uri,
range = range,
}
end
---@alias locationLink {targetUri:uri, targetRange: range, targetSelectionRange: range, originSelectionRange: range}
---@param uri string
---@param range range
---@param selection range
---@param origin range
---@return locationLink
function m.locationLink(uri, range, selection, origin)
return {
targetUri = uri,
targetRange = range,
targetSelectionRange = selection,
originSelectionRange = origin,
}
end
---@alias textEdit {range: range, newText: string}
---@param range range
---@param newtext string
---@return textEdit
function m.textEdit(range, newtext)
return {
range = range,
newText = newtext,
}
end
function m.setOffsetEncoding(encoding)
offsetEncoding = encoding:lower():gsub('%-', '')
end
---@class proto.command
---@field title string
---@field command string
---@field arguments any[]
---@param title string
---@param command string
---@param arguments any[]
---@return proto.command
function m.command(title, command, arguments)
return {
title = title,
command = command,
arguments = arguments,
}
end
return m
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