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local guide = require 'parser.guide'
local files = require 'files'
local vm = require 'vm.vm'
local function checkNext(source)
local nextSrc = source.next
if not nextSrc then
return nil
end
local ntype = nextSrc.type
if ntype == 'setfield'
or ntype == 'setmethod'
or ntype == 'setindex' then
return nextSrc, 'set'
elseif ntype == 'getfield'
or ntype == 'getmethod'
or ntype == 'getindex' then
return nextSrc, 'get'
end
return nil
end
local function findFieldInTable(value, callback)
if not value then
return
end
if value.type ~= 'table' then
return
end
for i = 1, #value do
local field = value[i]
if field.type == 'tablefield'
or field.type == 'tableindex' then
callback {
source = field,
key = guide.getKeyName(field),
value = field.value,
mode = 'set',
}
end
end
end
local function ofENV(source, callback)
local refs = source.ref
if not refs then
return
end
for i = 1, #refs do
local ref = refs[i]
if ref.type == 'getglobal' then
callback {
source = ref,
key = guide.getKeyName(ref),
mode = 'get',
}
elseif ref.type == 'setglobal' then
callback {
source = ref,
key = guide.getKeyName(ref),
mode = 'set',
}
end
findFieldInTable(ref.value, callback)
end
end
local function ofLocal(source, callback)
if source.tag == '_ENV' then
ofENV(source, callback)
else
vm.eachRef(source, function (info)
local src = info.source
findFieldInTable(src.value, callback)
local nextSrc, mode = checkNext(src)
if not nextSrc then
return
end
callback {
source = nextSrc,
key = guide.getKeyName(nextSrc),
mode = mode,
}
end)
end
end
local function ofGlobal(source, callback)
vm.eachRef(source, function (info)
local src = info.source
local nextSrc, mode = checkNext(src)
if not nextSrc then
return
end
callback {
source = nextSrc,
key = guide.getKeyName(nextSrc),
mode = mode,
}
findFieldInTable(src.value, callback)
end)
end
local function ofTable(source, callback)
local parent = source.parent
if parent and parent.value == source then
return vm.eachField(parent, callback)
else
findFieldInTable(source, callback)
end
end
function vm.eachField(source, callback)
local stype = source.type
if stype == 'local' then
ofLocal(source, callback)
elseif stype == 'getlocal'
or stype == 'setlocal' then
ofLocal(source.node, callback)
elseif stype == 'getglobal'
or stype == 'setglobal' then
ofGlobal(source, callback)
elseif stype == 'table' then
ofTable(source, callback)
end
end
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