summaryrefslogtreecommitdiff
path: root/script/vm/sign.lua
blob: 0022538a4c9deec13c2d291bb6adefe6c19ee4dd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
local guide         = require 'parser.guide'
---@class vm
local vm            = require 'vm.vm'

---@class vm.sign
---@field parent   parser.object
---@field signList vm.node[]
local mt = {}
mt.__index = mt
mt.type = 'sign'

---@param node vm.node
function mt:addSign(node)
    self.signList[#self.signList+1] = node
end

---@param uri uri
---@param args parser.object
---@param removeGeneric true?
---@return table<string, vm.node>?
function mt:resolve(uri, args, removeGeneric)
    if not args then
        return nil
    end
    local resolved = {}

    ---@param object vm.node.object
    ---@param node   vm.node
    local function resolve(object, node)
        if object.type == 'doc.generic.name' then
            local key = object[1]
            if object.literal then
                -- 'number' -> `T`
                for n in node:eachObject() do
                    if n.type == 'string' then
                        ---@cast n parser.object
                        local type = vm.declareGlobal('type', n[1], guide.getUri(n))
                        resolved[key] = vm.createNode(type, resolved[key])
                    end
                end
            else
                -- number -> T
                resolved[key] = vm.createNode(node, resolved[key])
            end
        end
        if object.type == 'doc.type.array' then
            for n in node:eachObject() do
                if n.type == 'doc.type.array' then
                    -- number[] -> T[]
                    resolve(object.node, vm.compileNode(n.node))
                end
                if n.type == 'doc.type.table' then
                    -- { [integer]: number } -> T[]
                    local tvalueNode = vm.getTableValue(uri, node, 'integer')
                    if tvalueNode then
                        resolve(object.node, tvalueNode)
                    end
                end
                if n.type == 'global' and n.cate == 'type' then
                    -- ---@field [integer]: number -> T[]
                    ---@cast n vm.global
                    vm.getClassFields(uri, n, vm.declareGlobal('type', 'integer'), false, function (field)
                        resolve(object.node, vm.compileNode(field.extends))
                    end)
                end
            end
        end
        if object.type == 'doc.type.table' then
            for _, ufield in ipairs(object.fields) do
                local ufieldNode = vm.compileNode(ufield.name)
                local uvalueNode = vm.compileNode(ufield.extends)
                local firstField = ufieldNode:get(1)
                local firstValue = uvalueNode:get(1)
                if not firstField or not firstValue then
                    goto CONTINUE
                end
                if firstField.type == 'doc.generic.name' and firstValue.type == 'doc.generic.name' then
                    -- { [number]: number} -> { [K]: V }
                    local tfieldNode = vm.getTableKey(uri, node, 'any')
                    local tvalueNode = vm.getTableValue(uri, node, 'any')
                    if tfieldNode then
                        resolve(firstField, tfieldNode)
                    end
                    if tvalueNode then
                        resolve(firstValue, tvalueNode)
                    end
                else
                    if ufieldNode:get(1).type == 'doc.generic.name' then
                        -- { [number]: number}|number[] -> { [K]: number }
                        local tnode = vm.getTableKey(uri, node, uvalueNode)
                        if tnode then
                            resolve(firstField, tnode)
                        end
                    elseif uvalueNode:get(1).type == 'doc.generic.name' then
                        -- { [number]: number}|number[] -> { [number]: V }
                        local tnode = vm.getTableValue(uri, node, ufieldNode)
                        if tnode then
                            resolve(firstValue, tnode)
                        end
                    end
                end
                ::CONTINUE::
            end
        end
    end

    ---@param sign vm.node
    ---@return table<string, true>
    ---@return table<string, true>
    local function getSignInfo(sign)
        local knownTypes = {}
        local genericsNames   = {}
        for obj in sign:eachObject() do
            if obj.type == 'doc.generic.name' then
                genericsNames[obj[1]] = true
                goto CONTINUE
            end
            if obj.type == 'doc.type.table'
            or obj.type == 'doc.type.function'
            or obj.type == 'doc.type.array' then
                ---@cast obj parser.object
                local hasGeneric
                guide.eachSourceType(obj, 'doc.generic.name', function (src)
                    hasGeneric = true
                    genericsNames[src[1]] = true
                end)
                if hasGeneric then
                    goto CONTINUE
                end
            end
            local view = vm.viewObject(obj, uri)
            if view then
                knownTypes[view] = true
            end
            ::CONTINUE::
        end
        return knownTypes, genericsNames
    end

    -- remove un-generic type
    ---@param argNode vm.node
    ---@param sign vm.node
    ---@param knownTypes table<string, true>
    ---@return vm.node
    local function buildArgNode(argNode, sign, knownTypes)
        local newArgNode = vm.createNode()
        local needRemoveNil = sign:hasFalsy()
        for n in argNode:eachObject() do
            if needRemoveNil then
                if n.type == 'nil' then
                    goto CONTINUE
                end
                if n.type == 'global' and n.cate == 'type' and n.name == 'nil' then
                    goto CONTINUE
                end
            end
            local view = vm.viewObject(n, uri)
            if knownTypes[view] then
                goto CONTINUE
            end
            newArgNode:merge(n)
            ::CONTINUE::
        end
        if not needRemoveNil and argNode:isOptional() then
            newArgNode:addOptional()
        end
        return newArgNode
    end

    ---@param genericNames table<string, true>
    local function isAllResolved(genericNames)
        for n in pairs(genericNames) do
            if not resolved[n] then
                return false
            end
        end
        return true
    end

    for i, arg in ipairs(args) do
        local sign = self.signList[i]
        if not sign then
            break
        end
        local argNode = vm.compileNode(arg)
        local knownTypes, genericNames = getSignInfo(sign)
        if not isAllResolved(genericNames) then
            local newArgNode = buildArgNode(argNode,sign, knownTypes)
            for n in sign:eachObject() do
                resolve(n, newArgNode)
            end
        end
    end

    return resolved
end

---@return vm.sign
function vm.createSign()
    local genericMgr = setmetatable({
        signList = {},
    }, mt)
    return genericMgr
end