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|
local error = error
local type = type
---@class parser.guide.object
---@class guide
---@field debugMode boolean
local m = {}
m.ANY = {"<ANY>"}
local blockTypes = {
['while'] = true,
['in'] = true,
['loop'] = true,
['repeat'] = true,
['do'] = true,
['function'] = true,
['ifblock'] = true,
['elseblock'] = true,
['elseifblock'] = true,
['main'] = true,
}
local breakBlockTypes = {
['while'] = true,
['in'] = true,
['loop'] = true,
['repeat'] = true,
}
m.childMap = {
['main'] = {'#', 'docs'},
['repeat'] = {'#', 'filter'},
['while'] = {'filter', '#'},
['in'] = {'keys', '#'},
['loop'] = {'loc', 'max', 'step', '#'},
['if'] = {'#'},
['ifblock'] = {'filter', '#'},
['elseifblock'] = {'filter', '#'},
['elseblock'] = {'#'},
['setfield'] = {'node', 'field', 'value'},
['setglobal'] = {'value'},
['local'] = {'attrs', 'value'},
['setlocal'] = {'value'},
['return'] = {'#'},
['do'] = {'#'},
['select'] = {'vararg'},
['table'] = {'#'},
['tableindex'] = {'index', 'value'},
['tablefield'] = {'field', 'value'},
['function'] = {'args', '#'},
['funcargs'] = {'#'},
['setmethod'] = {'node', 'method', 'value'},
['getmethod'] = {'node', 'method'},
['setindex'] = {'node', 'index', 'value'},
['getindex'] = {'node', 'index'},
['paren'] = {'exp'},
['call'] = {'node', 'args'},
['callargs'] = {'#'},
['getfield'] = {'node', 'field'},
['list'] = {'#'},
['binary'] = {1, 2},
['unary'] = {1},
['doc'] = {'#'},
['doc.class'] = {'class', '#extends', 'comment'},
['doc.type'] = {'#types', '#enums', '#resumes', 'name', 'comment'},
['doc.alias'] = {'alias', 'extends', 'comment'},
['doc.param'] = {'param', 'extends', 'comment'},
['doc.return'] = {'#returns', 'comment'},
['doc.field'] = {'field', 'extends', 'comment'},
['doc.generic'] = {'#generics', 'comment'},
['doc.generic.object'] = {'generic', 'extends', 'comment'},
['doc.vararg'] = {'vararg', 'comment'},
['doc.type.array'] = {'node'},
['doc.type.table'] = {'tkey', 'tvalue', 'comment'},
['doc.type.function'] = {'#args', '#returns', 'comment'},
['doc.type.literal'] = {'node'},
['doc.type.arg'] = {'extends'},
['doc.overload'] = {'overload', 'comment'},
['doc.see'] = {'name', 'field'},
}
m.actionMap = {
['main'] = {'#'},
['repeat'] = {'#'},
['while'] = {'#'},
['in'] = {'#'},
['loop'] = {'#'},
['if'] = {'#'},
['ifblock'] = {'#'},
['elseifblock'] = {'#'},
['elseblock'] = {'#'},
['do'] = {'#'},
['function'] = {'#'},
['funcargs'] = {'#'},
}
local inf = 1 / 0
local nan = 0 / 0
local function isInteger(n)
if math.type then
return math.type(n) == 'integer'
else
return type(n) == 'number' and n % 1 == 0
end
end
local function formatNumber(n)
if n == inf
or n == -inf
or n == nan
or n ~= n then -- IEEE 标准中,NAN 不等于自己。但是某些实现中没有遵守这个规则
return ('%q'):format(n)
end
if isInteger(n) then
return tostring(n)
end
local str = ('%.10f'):format(n)
str = str:gsub('%.?0*$', '')
return str
end
--- 是否是字面量
---@param obj parser.guide.object
---@return boolean
function m.isLiteral(obj)
local tp = obj.type
return tp == 'nil'
or tp == 'boolean'
or tp == 'string'
or tp == 'number'
or tp == 'table'
or tp == 'function'
end
--- 获取字面量
---@param obj parser.guide.object
---@return any
function m.getLiteral(obj)
local tp = obj.type
if tp == 'boolean' then
return obj[1]
elseif tp == 'string' then
return obj[1]
elseif tp == 'number' then
return obj[1]
end
return nil
end
--- 寻找父函数
---@param obj parser.guide.object
---@return parser.guide.object
function m.getParentFunction(obj)
for _ = 1, 1000 do
obj = obj.parent
if not obj then
break
end
local tp = obj.type
if tp == 'function' or tp == 'main' then
return obj
end
end
return nil
end
--- 寻找所在区块
---@param obj parser.guide.object
---@return parser.guide.object
function m.getBlock(obj)
for _ = 1, 1000 do
if not obj then
return nil
end
local tp = obj.type
if blockTypes[tp] then
return obj
end
if obj == obj.parent then
error('obj == obj.parent?', obj.type)
end
obj = obj.parent
end
error('guide.getBlock overstack')
end
--- 寻找所在父区块
---@param obj parser.guide.object
---@return parser.guide.object
function m.getParentBlock(obj)
for _ = 1, 1000 do
obj = obj.parent
if not obj then
return nil
end
local tp = obj.type
if blockTypes[tp] then
return obj
end
end
error('guide.getParentBlock overstack')
end
--- 寻找所在可break的父区块
---@param obj parser.guide.object
---@return parser.guide.object
function m.getBreakBlock(obj)
for _ = 1, 1000 do
obj = obj.parent
if not obj then
return nil
end
local tp = obj.type
if breakBlockTypes[tp] then
return obj
end
if tp == 'function' then
return nil
end
end
error('guide.getBreakBlock overstack')
end
--- 寻找doc的主体
---@param obj parser.guide.object
---@return parser.guide.object
function m.getDocState(obj)
for _ = 1, 1000 do
local parent = obj.parent
if not parent then
return obj
end
if parent.type == 'doc' then
return obj
end
obj = parent
end
error('guide.getDocState overstack')
end
--- 寻找所在父类型
---@param obj parser.guide.object
---@return parser.guide.object
function m.getParentType(obj, want)
for _ = 1, 1000 do
obj = obj.parent
if not obj then
return nil
end
if want == obj.type then
return obj
end
end
error('guide.getParentType overstack')
end
--- 寻找根区块
---@param obj parser.guide.object
---@return parser.guide.object
function m.getRoot(obj)
local source = obj
if source._root then
return source._root
end
for _ = 1, 1000 do
if obj.type == 'main' then
source._root = obj
return obj
end
if obj._root then
source._root = obj._root
return source._root
end
local parent = obj.parent
if not parent then
return nil
end
obj = parent
end
error('guide.getRoot overstack')
end
---@param obj parser.guide.object
---@return string
function m.getUri(obj)
if obj.uri then
return obj.uri
end
local root = m.getRoot(obj)
if root then
return root.uri
end
return ''
end
function m.getENV(source, start)
if not start then
start = 1
end
return m.getLocal(source, '_ENV', start)
or m.getLocal(source, '@fenv', start)
end
--- 寻找函数的不定参数,返回不定参在第几个参数上,以及该参数对象。
--- 如果函数是主函数,则返回`0, nil`。
---@return table
---@return integer
function m.getFunctionVarArgs(func)
if func.type == 'main' then
return 0, nil
end
if func.type ~= 'function' then
return nil, nil
end
local args = func.args
if not args then
return nil, nil
end
for i = 1, #args do
local arg = args[i]
if arg.type == '...' then
return i, arg
end
end
return nil, nil
end
--- 获取指定区块中可见的局部变量
---@param block table
---@param name string {comment = '变量名'}
---@param pos integer {comment = '可见位置'}
function m.getLocal(block, name, pos)
block = m.getBlock(block)
for _ = 1, 1000 do
if not block then
return nil
end
local locals = block.locals
local res
if not locals then
goto CONTINUE
end
for i = 1, #locals do
local loc = locals[i]
if loc.effect > pos then
break
end
if loc[1] == name then
if not res or res.effect < loc.effect then
res = loc
end
end
end
if res then
return res, res
end
::CONTINUE::
block = m.getParentBlock(block)
end
error('guide.getLocal overstack')
end
--- 获取指定区块中所有的可见局部变量名称
function m.getVisibleLocals(block, pos)
local result = {}
m.eachSourceContain(m.getRoot(block), pos, function (source)
local locals = source.locals
if locals then
for i = 1, #locals do
local loc = locals[i]
local name = loc[1]
if loc.effect <= pos then
result[name] = loc
end
end
end
end)
return result
end
--- 获取指定区块中可见的标签
---@param block table
---@param name string {comment = '标签名'}
function m.getLabel(block, name)
block = m.getBlock(block)
for _ = 1, 1000 do
if not block then
return nil
end
local labels = block.labels
if labels then
local label = labels[name]
if label then
return label
end
end
if block.type == 'function' then
return nil
end
block = m.getParentBlock(block)
end
error('guide.getLocal overstack')
end
function m.getStartFinish(source)
local start = source.start
local finish = source.finish
if not start then
local first = source[1]
if not first then
return nil, nil
end
local last = source[#source]
start = first.start
finish = last.finish
end
return start, finish
end
function m.getRange(source)
local start = source.vstart or source.start
local finish = source.range or source.finish
if not start then
local first = source[1]
if not first then
return nil, nil
end
local last = source[#source]
start = first.vstart or first.start
finish = last.range or last.finish
end
return start, finish
end
--- 判断source是否包含offset
function m.isContain(source, offset)
local start, finish = m.getStartFinish(source)
if not start then
return false
end
return start <= offset and finish >= offset
end
--- 判断offset在source的影响范围内
---
--- 主要针对赋值等语句时,key包含value
function m.isInRange(source, offset)
local start, finish = m.getRange(source)
if not start then
return false
end
return start <= offset and finish >= offset
end
function m.isBetween(source, tStart, tFinish)
local start, finish = m.getStartFinish(source)
if not start then
return false
end
return start <= tFinish and finish >= tStart
end
function m.isBetweenRange(source, tStart, tFinish)
local start, finish = m.getRange(source)
if not start then
return false
end
return start <= tFinish and finish >= tStart
end
--- 添加child
function m.addChilds(list, obj, map)
local keys = map[obj.type]
if keys then
for i = 1, #keys do
local key = keys[i]
if key == '#' then
for j = 1, #obj do
list[#list+1] = obj[j]
end
elseif obj[key] then
list[#list+1] = obj[key]
elseif type(key) == 'string'
and key:sub(1, 1) == '#' then
key = key:sub(2)
if obj[key] then
for j = 1, #obj[key] do
list[#list+1] = obj[key][j]
end
end
end
end
end
end
--- 遍历所有包含offset的source
function m.eachSourceContain(ast, offset, callback)
local list = { ast }
local mark = {}
while true do
local len = #list
if len == 0 then
return
end
local obj = list[len]
list[len] = nil
if not mark[obj] then
mark[obj] = true
if m.isInRange(obj, offset) then
if m.isContain(obj, offset) then
local res = callback(obj)
if res ~= nil then
return res
end
end
m.addChilds(list, obj, m.childMap)
end
end
end
end
--- 遍历所有在某个范围内的source
function m.eachSourceBetween(ast, start, finish, callback)
local list = { ast }
local mark = {}
while true do
local len = #list
if len == 0 then
return
end
local obj = list[len]
list[len] = nil
if not mark[obj] then
mark[obj] = true
if m.isBetweenRange(obj, start, finish) then
if m.isBetween(obj, start, finish) then
local res = callback(obj)
if res ~= nil then
return res
end
end
m.addChilds(list, obj, m.childMap)
end
end
end
end
--- 遍历所有指定类型的source
function m.eachSourceType(ast, type, callback)
local cache = ast.typeCache
if not cache then
cache = {}
ast.typeCache = cache
m.eachSource(ast, function (source)
local tp = source.type
if not tp then
return
end
local myCache = cache[tp]
if not myCache then
myCache = {}
cache[tp] = myCache
end
myCache[#myCache+1] = source
end)
end
local myCache = cache[type]
if not myCache then
return
end
for i = 1, #myCache do
callback(myCache[i])
end
end
--- 遍历所有的source
function m.eachSource(ast, callback)
local list = { ast }
local mark = {}
local index = 1
while true do
local obj = list[index]
if not obj then
return
end
list[index] = false
index = index + 1
if not mark[obj] then
mark[obj] = true
local res = callback(obj)
if res == true then
goto CONTINUE
end
if res == false then
return
end
m.addChilds(list, obj, m.childMap)
end
::CONTINUE::
end
end
--- 获取指定的 special
function m.eachSpecialOf(ast, name, callback)
local root = m.getRoot(ast)
if not root.specials then
return
end
local specials = root.specials[name]
if not specials then
return
end
for i = 1, #specials do
callback(specials[i])
end
end
--- 获取偏移对应的坐标
---@param lines table
---@return integer {name = 'row'}
---@return integer {name = 'col'}
function m.positionOf(lines, offset)
if offset < 1 then
return 0, 0
end
local lastLine = lines[#lines]
if offset > lastLine.finish then
return #lines, offset - lastLine.start
end
local min = 1
local max = #lines
for _ = 1, 100 do
if max <= min then
local line = lines[min]
return min, offset - line.start + 1
end
local row = (max - min) // 2 + min
local line = lines[row]
if offset < line.start then
max = row - 1
elseif offset > line.finish then
min = row + 1
else
return row, offset - line.start + 1
end
end
error('Stack overflow!')
end
--- 获取坐标对应的偏移
---@param lines table
---@param row integer
---@param col integer
---@return integer {name = 'offset'}
function m.offsetOf(lines, row, col)
if row < 1 then
return 0
end
if row > #lines then
local lastLine = lines[#lines]
return lastLine.finish
end
local line = lines[row]
local len = line.finish - line.start + 1
if col < 0 then
return line.start
elseif col > len then
return line.finish
else
return line.start + col - 1
end
end
function m.lineContent(lines, text, row, ignoreNL)
local line = lines[row]
if not line then
return ''
end
if ignoreNL then
return text:sub(line.start, line.range)
else
return text:sub(line.start, line.finish)
end
end
function m.lineRange(lines, row, ignoreNL)
local line = lines[row]
if not line then
return 0, 0
end
if ignoreNL then
return line.start, line.range
else
return line.start, line.finish
end
end
function m.lineData(lines, row)
return lines[row]
end
function m.isSet(source)
local tp = source.type
if tp == 'setglobal'
or tp == 'local'
or tp == 'setlocal'
or tp == 'setfield'
or tp == 'setmethod'
or tp == 'setindex'
or tp == 'tablefield'
or tp == 'tableindex' then
return true
end
if tp == 'call' then
local special = m.getSpecial(source.node)
if special == 'rawset' then
return true
end
end
return false
end
function m.isGet(source)
local tp = source.type
if tp == 'getglobal'
or tp == 'getlocal'
or tp == 'getfield'
or tp == 'getmethod'
or tp == 'getindex' then
return true
end
if tp == 'call' then
local special = m.getSpecial(source.node)
if special == 'rawget' then
return true
end
end
return false
end
function m.getSpecial(source)
if not source then
return nil
end
return source.special
end
function m.getKeyNameOfLiteral(obj)
if not obj then
return nil
end
local tp = obj.type
if tp == 'field'
or tp == 'method' then
return obj[1]
elseif tp == 'string' then
local s = obj[1]
if s then
return s
end
elseif tp == 'number' then
local n = obj[1]
if n then
return ('%s'):format(formatNumber(obj[1]))
end
elseif tp == 'boolean' then
local b = obj[1]
if b then
return tostring(b)
end
end
end
function m.getKeyName(obj)
if not obj then
return nil
end
local tp = obj.type
if tp == 'getglobal'
or tp == 'setglobal' then
return obj[1]
elseif tp == 'local'
or tp == 'getlocal'
or tp == 'setlocal' then
return obj[1]
elseif tp == 'getfield'
or tp == 'setfield'
or tp == 'tablefield' then
if obj.field then
return obj.field[1]
end
elseif tp == 'getmethod'
or tp == 'setmethod' then
if obj.method then
return obj.method[1]
end
elseif tp == 'getindex'
or tp == 'setindex'
or tp == 'tableindex' then
return m.getKeyNameOfLiteral(obj.index)
elseif tp == 'field'
or tp == 'method'
or tp == 'doc.see.field' then
return obj[1]
elseif tp == 'doc.class' then
return obj.class[1]
elseif tp == 'doc.alias' then
return obj.alias[1]
elseif tp == 'doc.field' then
return obj.field[1]
elseif tp == 'doc.field.name' then
return obj[1]
elseif tp == 'dummy' then
return obj[1]
end
return m.getKeyNameOfLiteral(obj)
end
function m.getKeyTypeOfLiteral(obj)
if not obj then
return nil
end
local tp = obj.type
if tp == 'field'
or tp == 'method' then
return 'string'
elseif tp == 'string' then
return 'string'
elseif tp == 'number' then
return 'number'
elseif tp == 'boolean' then
return 'boolean'
end
end
function m.getKeyType(obj)
if not obj then
return nil
end
local tp = obj.type
if tp == 'getglobal'
or tp == 'setglobal' then
return 'string'
elseif tp == 'local'
or tp == 'getlocal'
or tp == 'setlocal' then
return 'local'
elseif tp == 'getfield'
or tp == 'setfield'
or tp == 'tablefield' then
return 'string'
elseif tp == 'getmethod'
or tp == 'setmethod' then
return 'string'
elseif tp == 'getindex'
or tp == 'setindex'
or tp == 'tableindex' then
return m.getKeyTypeOfLiteral(obj.index)
elseif tp == 'field'
or tp == 'method'
or tp == 'doc.see.field' then
return 'string'
elseif tp == 'doc.class' then
return 'string'
elseif tp == 'doc.alias' then
return 'string'
elseif tp == 'doc.field' then
return 'string'
elseif tp == 'dummy' then
return 'string'
end
if tp == 'doc.field.name' then
return 'string'
end
return m.getKeyTypeOfLiteral(obj)
end
--- 测试 a 到 b 的路径(不经过函数,不考虑 goto),
--- 每个路径是一个 block 。
---
--- 如果 a 在 b 的前面,返回 `"before"` 加上 2个`list<block>`
---
--- 如果 a 在 b 的后面,返回 `"after"` 加上 2个`list<block>`
---
--- 否则返回 `false`
---
--- 返回的2个 `list` 分别为基准block到达 a 与 b 的路径。
---@param a table
---@param b table
---@return string|boolean mode
---@return table pathA?
---@return table pathB?
function m.getPath(a, b, sameFunction)
--- 首先测试双方在同一个函数内
if sameFunction and m.getParentFunction(a) ~= m.getParentFunction(b) then
return false
end
local mode
local objA
local objB
if a.finish < b.start then
mode = 'before'
objA = a
objB = b
elseif a.start > b.finish then
mode = 'after'
objA = b
objB = a
else
return 'equal', {}, {}
end
local pathA = {}
local pathB = {}
for _ = 1, 1000 do
objA = m.getParentBlock(objA)
pathA[#pathA+1] = objA
if (not sameFunction and objA.type == 'function') or objA.type == 'main' then
break
end
end
for _ = 1, 1000 do
objB = m.getParentBlock(objB)
pathB[#pathB+1] = objB
if (not sameFunction and objA.type == 'function') or objB.type == 'main' then
break
end
end
-- pathA: {1, 2, 3, 4, 5}
-- pathB: {5, 6, 2, 3}
local top = #pathB
local start
for i = #pathA, 1, -1 do
local currentBlock = pathA[i]
if currentBlock == pathB[top] then
start = i
break
end
end
if not start then
return nil
end
-- pathA: { 1, 2, 3}
-- pathB: {5, 6, 2, 3}
local extra = 0
local align = top - start
for i = start, 1, -1 do
local currentA = pathA[i]
local currentB = pathB[i+align]
if currentA ~= currentB then
extra = i
break
end
end
-- pathA: {1}
local resultA = {}
for i = extra, 1, -1 do
resultA[#resultA+1] = pathA[i]
end
-- pathB: {5, 6}
local resultB = {}
for i = extra + align, 1, -1 do
resultB[#resultB+1] = pathB[i]
end
return mode, resultA, resultB
end
---是否是全局变量(包括 _G.XXX 形式)
---@param source parser.guide.object
---@return boolean
function m.isGlobal(source)
if source.type == 'setglobal'
or source.type == 'getglobal' then
if source.node and source.node.tag == '_ENV' then
return true
end
end
if source.type == 'field' then
source = source.parent
end
if source.special == '_G' then
return true
end
return false
end
return m
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