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local searcher = require 'core.searcher'
local files = require 'files'
local vm = require 'vm'
local define = require 'proto.define'
local findSource = require 'core.find-source'
local function eachRef(source, callback)
local results = searcher.requestReference(source)
for i = 1, #results do
callback(results[i])
end
end
local function eachField(source, callback)
if not source then
return
end
local isGlobal = searcher.isGlobal(source)
local results = searcher.requestReference(source)
for i = 1, #results do
local res = results[i]
if isGlobal == searcher.isGlobal(res) then
callback(res)
end
end
end
local function eachLocal(source, callback)
callback(source)
if source.ref then
for _, ref in ipairs(source.ref) do
callback(ref)
end
end
end
local function find(source, uri, callback)
if source.type == 'local' then
eachLocal(source, callback)
elseif source.type == 'getlocal'
or source.type == 'setlocal' then
eachLocal(source.node, callback)
elseif source.type == 'field'
or source.type == 'method' then
eachField(source.parent, callback)
elseif source.type == 'getindex'
or source.type == 'setindex'
or source.type == 'tableindex' then
eachField(source, callback)
elseif source.type == 'setglobal'
or source.type == 'getglobal' then
eachField(source, callback)
elseif source.type == 'goto'
or source.type == 'label' then
eachRef(source, callback)
elseif source.type == 'string'
and source.parent
and source.parent.index == source then
eachField(source.parent, callback)
elseif source.type == 'string'
or source.type == 'boolean'
or source.type == 'number'
or source.type == 'nil' then
callback(source)
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(ast, text, offset, callback)
searcher.eachSourceContain(ast.ast, offset, function (source)
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)
end
local accept = {
['label'] = true,
['goto'] = true,
['local'] = true,
['setlocal'] = true,
['getlocal'] = true,
['field'] = true,
['method'] = true,
['tablefield'] = true,
['setglobal'] = true,
['getglobal'] = true,
['string'] = true,
['boolean'] = true,
['number'] = true,
['nil'] = true,
}
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 = {}
local source = findSource(ast, offset, accept)
if source then
find(source, uri, function (target)
if target.dummy then
return
end
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 == 'field' then
if target.parent.type == 'getfield' then
kind = define.DocumentHighlightKind.Read
else
kind = define.DocumentHighlightKind.Write
end
elseif target.type == 'method' then
if target.parent.type == 'getmethod' then
kind = define.DocumentHighlightKind.Read
else
kind = define.DocumentHighlightKind.Write
end
elseif target.type == 'index' then
if target.parent.type == 'getindex' then
kind = define.DocumentHighlightKind.Read
else
kind = define.DocumentHighlightKind.Write
end
elseif target.type == 'index' then
if target.parent.type == 'getindex' then
kind = define.DocumentHighlightKind.Read
else
kind = define.DocumentHighlightKind.Write
end
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
return
end
if not target then
return
end
if mark[target] then
return
end
mark[target] = true
results[#results+1] = {
start = target.start,
finish = target.finish,
kind = kind,
}
end)
end
findKeyWord(ast, text, offset, function (start, finish)
results[#results+1] = {
start = start,
finish = finish,
kind = define.DocumentHighlightKind.Write
}
end)
if #results == 0 then
return nil
end
return results
end
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