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local guide = require 'parser.guide'
local files = require 'files'
local vm = require 'vm'
local define = require 'proto.define'
local function ofLocal(source, callback)
callback(source)
if source.ref then
for _, ref in ipairs(source.ref) do
callback(ref)
end
end
end
local function ofField(source, uri, callback)
local parent = source.parent
if not parent then
return
end
local myKey = vm.getKeyName(source)
if parent.type == 'tableindex'
or parent.type == 'tablefield' then
local tbl = parent.parent
vm.eachField(tbl, function (src)
if vm.getKeyName(src) ~= myKey then
return
end
local destUri = guide.getRoot(src).uri
if destUri ~= uri then
return
end
callback(src)
end)
else
vm.eachField(parent.node, function (src)
if vm.getKeyName(src) ~= myKey then
return
end
local destUri = guide.getRoot(src).uri
if destUri ~= uri then
return
end
callback(src)
end)
end
end
local function ofIndex(source, uri, callback)
local parent = source.parent
if not parent then
return
end
if parent.type == 'setindex'
or parent.type == 'getindex'
or parent.type == 'tableindex' then
ofField(source, uri, callback)
end
end
local function ofLabel(source, callback)
vm.eachRef(source, callback)
end
local function find(source, uri, callback)
if source.type == 'local' then
ofLocal(source, callback)
elseif source.type == 'getlocal'
or source.type == 'setlocal' then
ofLocal(source.node, callback)
elseif source.type == 'field'
or source.type == 'method' then
ofField(source, uri, callback)
elseif source.type == 'string'
or source.type == 'boolean'
or source.type == 'number' then
ofIndex(source, uri, callback)
callback(source)
elseif source.type == 'nil' then
callback(source)
elseif source.type == 'goto'
or source.type == 'label' then
ofLabel(source, callback)
end
end
local function checkInIf(source, text, offset)
-- 检查 end
local endA = source.finish - #'end' + 1
local endB = source.finish
if offset >= endA
and offset <= endB
and text:sub(endA, endB) == 'end' then
return true
end
-- 检查每个子模块
for _, block in ipairs(source) do
for i = 1, #block.keyword, 2 do
local start = block.keyword[i]
local finish = block.keyword[i+1]
if offset >= start and offset <= finish then
return true
end
end
end
return false
end
local function makeIf(source, text, callback)
-- end
local endA = source.finish - #'end' + 1
local endB = source.finish
if text:sub(endA, endB) == 'end' then
callback(endA, endB)
end
-- 每个子模块
for _, block in ipairs(source) do
for i = 1, #block.keyword, 2 do
local start = block.keyword[i]
local finish = block.keyword[i+1]
callback(start, finish)
end
end
return false
end
local function findKeyword(source, text, offset, callback)
if source.type == 'do'
or source.type == 'function'
or source.type == 'loop'
or source.type == 'in'
or source.type == 'while'
or source.type == 'repeat' then
local ok
for i = 1, #source.keyword, 2 do
local start = source.keyword[i]
local finish = source.keyword[i+1]
if offset >= start and offset <= finish then
ok = true
break
end
end
if ok then
for i = 1, #source.keyword, 2 do
local start = source.keyword[i]
local finish = source.keyword[i+1]
callback(start, finish)
end
end
elseif source.type == 'if' then
local ok = checkInIf(source, text, offset)
if ok then
makeIf(source, text, callback)
end
end
end
return function (uri, offset)
local ast = files.getAst(uri)
if not ast then
return nil
end
local text = files.getText(uri)
local results = {}
local mark = {}
guide.eachSourceContain(ast.ast, offset, function (source)
find(source, uri, function (target)
local kind
if target.type == 'getfield' then
target = target.field
kind = define.DocumentHighlightKind.Read
elseif target.type == 'setfield'
or target.type == 'tablefield' then
target = target.field
kind = define.DocumentHighlightKind.Write
elseif target.type == 'getmethod' then
target = target.method
kind = define.DocumentHighlightKind.Read
elseif target.type == 'setmethod' then
target = target.method
kind = define.DocumentHighlightKind.Write
elseif target.type == 'getindex' then
target = target.index
kind = define.DocumentHighlightKind.Read
elseif target.type == 'setindex'
or target.type == 'tableindex' then
target = target.index
kind = define.DocumentHighlightKind.Write
elseif target.type == 'getlocal'
or target.type == 'getglobal'
or target.type == 'goto' then
kind = define.DocumentHighlightKind.Read
elseif target.type == 'setlocal'
or target.type == 'local'
or target.type == 'setglobal'
or target.type == 'label' then
kind = define.DocumentHighlightKind.Write
elseif target.type == 'string'
or target.type == 'boolean'
or target.type == 'number'
or target.type == 'nil' then
kind = define.DocumentHighlightKind.Text
else
log.warn('Unknow target.type:', target.type)
return
end
if mark[target] then
return
end
mark[target] = true
results[#results+1] = {
start = target.start,
finish = target.finish,
kind = kind,
}
end)
findKeyword(source, text, offset, function (start, finish)
results[#results+1] = {
start = start,
finish = finish,
kind = define.DocumentHighlightKind.Write
}
end)
end)
if #results == 0 then
return nil
end
return results
end
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