summaryrefslogtreecommitdiff
path: root/script/core/hover/table.lua
blob: e2c439af48df99616111c41517d2bccb9e5385e0 (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
local vm       = require 'vm'
local util     = require 'utility'
local config   = require 'config'
local infer    = require 'vm.infer'
local await    = require 'await'
local guide    = require 'parser.guide'

local function formatKey(key)
    if type(key) == 'string' then
        if key:match '^[%a_][%w_]*$' then
            return key
        else
            return ('[%s]'):format(util.viewLiteral(key))
        end
    end
    return ('[%s]'):format(key)
end

local function buildAsHash(keys, inferMap, literalMap, optMap, reachMax)
    local lines = {}
    lines[#lines+1] = '{'
    for _, key in ipairs(keys) do
        local inferView   = inferMap[key]
        local literalView = literalMap[key]
        if literalView then
            lines[#lines+1] = ('    %s%s: %s = %s,'):format(
                formatKey(key),
                optMap[key] and '?' or '',
                inferView,
                literalView)
        else
            lines[#lines+1] = ('    %s%s: %s,'):format(
                formatKey(key),
                optMap[key] and '?' or '',
                inferView
            )
        end
    end
    if reachMax > 0 then
        lines[#lines+1] = ('    ...(+%d)'):format(reachMax)
    end
    lines[#lines+1] = '}'
    return table.concat(lines, '\n')
end

local function buildAsConst(keys, inferMap, literalMap, optMap, reachMax)
    table.sort(keys, function (a, b)
        return tonumber(literalMap[a]) < tonumber(literalMap[b])
    end)
    local lines = {}
    lines[#lines+1] = '{'
    for _, key in ipairs(keys) do
        local inferView   = inferMap[key]
        local literalView = literalMap[key]
        if literalView then
            lines[#lines+1] = ('    %s%s: %s = %s,'):format(
                formatKey(key),
                optMap[key] and '?' or '',
                inferView,
                literalView
            )
        else
            lines[#lines+1] = ('    %s%s: %s,'):format(
                formatKey(key),
                optMap[key] and '?' or '',
                inferView
            )
        end
    end
    if reachMax > 0 then
        lines[#lines+1] = ('    ...(+%d)'):format(reachMax)
    end
    lines[#lines+1] = '}'
    return table.concat(lines, '\n')
end

local typeSorter = {
    ['string']  = 1,
    ['number']  = 2,
    ['boolean'] = 3,
}

local function getKeyMap(fields)
    local keys = {}
    local mark = {}
    for _, field in ipairs(fields) do
        local key = vm.getKeyName(field)
        local tp  = vm.getKeyType(field)
        if     tp == 'number' or tp == 'integer' then
            key = tonumber(key)
        elseif tp == 'boolean' then
            key = key == 'true'
        end
        if key and not mark[key] then
            mark[key] = true
            keys[#keys+1] = key
        end
    end
    table.sort(keys, function (a, b)
        if a == b then
            return false
        end
        local ta  = type(a)
        local tb  = type(b)
        local tsa = typeSorter[ta]
        local tsb = typeSorter[tb]
        if tsa == tsb then
            if ta == 'boolean' then
                return a == true
            end
            return a < b
        else
            return tsa < tsb
        end
    end)
    return keys
end

local function getOptionalMap(fields)
    local optionals = {}
    for _, field in ipairs(fields) do
        if field.type == 'doc.field.name' then
            if field.parent.optional then
                local key = vm.getKeyName(field)
                local tp  = vm.getKeyType(field)
                if     tp == 'number' or tp == 'integer' then
                    key = tonumber(key)
                elseif tp == 'boolean' then
                    key = key == 'true'
                end
                optionals[key] = true
            end
        end
        if field.type == 'doc.type.field' then
            if field.optional then
                local key = vm.getKeyName(field)
                local tp  = vm.getKeyType(field)
                if     tp == 'number' or tp == 'integer' then
                    key = tonumber(key)
                elseif tp == 'boolean' then
                    key = key == 'true'
                end
                optionals[key] = true
            end
        end
    end
    return optionals
end

---@async
return function (source)
    local maxFields = config.get(guide.getUri(source), 'Lua.hover.previewFields')
    if maxFields <= 0 then
        return 'table'
    end

    local fields = vm.getRefs(source, '*')
    local keys   = getKeyMap(fields)
    local optMap = getOptionalMap(fields)

    if #keys == 0 then
        return '{}'
    end

    local inferMap   = {}
    local literalMap = {}

    local reachMax = #keys - maxFields
    if #keys > maxFields then
        for i = maxFields + 1, #keys do
            keys[i] = nil
        end
    end

    local isConsts = true
    for i = 1, #keys do
        await.delay()
        local key = keys[i]

        inferMap[key]   = infer.viewType(source, key)
        literalMap[key] = infer.viewLiterals(source, key)
        if not tonumber(literalMap[key]) then
            isConsts = false
        end
    end

    local result

    if isConsts then
        result = buildAsConst(keys, inferMap, literalMap, optMap, reachMax)
    else
        result = buildAsHash(keys, inferMap, literalMap, optMap, reachMax)
    end

    --if timeUp then
    --    result = ('\n--%s\n%s'):format(lang.script.HOVER_TABLE_TIME_UP, result)
    --end

    return result
end