diff options
| -rw-r--r-- | script/core/fix-indent.lua | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/script/core/fix-indent.lua b/script/core/fix-indent.lua new file mode 100644 index 00000000..9389072d --- /dev/null +++ b/script/core/fix-indent.lua @@ -0,0 +1,170 @@ +local files = require 'files' +local guide = require 'parser.guide' +local lookBackward = require 'core.look-backward' +local proto = require 'proto.proto' + +---@param state parser.state +local function insertIndentation(state, position, edits) + local text = state.originText or state.lua + local lines = state.originLines or state.lines + local row = guide.rowColOf(position) + if not lines or not text then + return + end + local offset = lines[row] + local indent = text:match('^%s*', offset) + for _, edit in ipairs(edits) do + edit.text = edit.text:gsub('\n', '\n' .. indent) + end +end + +---@param state parser.state +local function findForward(state, position, ...) + local lines = state.originLines or state.lines + local offset = guide.positionToOffsetByLines(lines, position) + local firstOffset = state.originText:match('^[ \t]*()', offset + 1) + if not firstOffset then + return nil + end + for _, symbol in ipairs { ... } do + if state.originText:sub(firstOffset, firstOffset + #symbol - 1) == symbol then + return guide.offsetToPositionByLines(lines, firstOffset - 1), symbol + end + end + return nil +end + +---@param state parser.state +local function findBackward(state, position, ...) + local text = state.originText or state.lua + local lines = state.originLines or state.lines + if not text or not lines then + return nil + end + local offset = guide.positionToOffsetByLines(lines, position) + local lastOffset = lookBackward.findAnyOffset(text, offset) + if not lastOffset then + return nil + end + for _, symbol in ipairs { ... } do + if text:sub(lastOffset - #symbol + 1, lastOffset) == symbol then + return guide.offsetToPositionByLines(lines, lastOffset) + end + end + return nil +end + +---@param state parser.state +---@param change table +---@param result any[] +local function checkSplitOneLine(state, change, result) + if change.text ~= '\r\n' + and change.text ~= '\n' then + return + end + + local lines = state.originLines or state.lines + local position = lines[change.range.start.line + 1] + + local fPosition, fSymbol = findForward(state, position, 'end', '}') + if not fPosition or not fSymbol then + return + end + local bPosition = findBackward(state, position, 'then', 'do', ')', '{') + if not bPosition then + return + end + local edits = {} + edits[#edits+1] = { + start = bPosition, + finish = position, + text = '\n\t', + } + edits[#edits+1] = { + start = position, + finish = fPosition + 1, + text = '', + } + edits[#edits+1] = { + start = fPosition + 1, + finish = fPosition + 1, + text = '\n' .. fSymbol:sub(1, 1) + } + insertIndentation(state, bPosition, edits) + for _, edit in ipairs(edits) do + result[#result+1] = edit + end +end + +---@param state parser.state +local function applyEdits(state, edits) + if #edits == 0 then + return + end + + local lines = state.originLines or state.lines + + local results = {} + for i, edit in ipairs(edits) do + local startPos = guide.offsetToPositionByLines(lines, edit.start) + local endPos = guide.offsetToPositionByLines(lines, edit.finish) + local startRow, startCol = guide.rowColOf(startPos) + local endRow, endCol = guide.rowColOf(endPos) + results[i] = { + range = { + start = { + line = startRow, + character = startCol, + }, + ['end'] = { + line = endRow, + character = endCol, + } + }, + newText = edit.text, + } + end + + proto.request('workspace/applyEdit', { + label = 'Fix Indent', + edit = { + changes = { + [state.uri] = { + { + range = { + start = { + line = 1, + character = 0, + }, + ['end'] = { + line = 1, + character = 0, + } + }, + newText = '\t', + }, + } + } + }, + }) + proto.notify('$/command', { + command = 'cursorMove', + }) +end + +return function (uri, changes) + do return end + local state = files.compileState(uri) + if not state then + return + end + + local edits = {} + for _, change in ipairs(changes) do + if change.range then + checkSplitOneLine(state, change, edits) + end + end + + applyEdits(state, edits) +end |