summaryrefslogtreecommitdiff
path: root/Master/texmf-dist/tex/context/base/mkiv/node-ser.lua
blob: 6fc2b7ea4cfcc88a8c44d158d83265e523037a5e (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
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
if not modules then modules = { } end modules ['node-ser'] = {
    version   = 1.001,
    comment   = "companion to node-ini.mkiv",
    author    = "Hans Hagen, PRAGMA-ADE, Hasselt NL",
    copyright = "PRAGMA ADE / ConTeXt Development Team",
    license   = "see context related readme files"
}

-- beware, some field names will change in a next releases
-- of luatex; this is pretty old code that needs an overhaul

local type, tostring = type, tostring
local concat, tohash, sortedkeys, printtable, serialize = table.concat, table.tohash, table.sortedkeys, table.print, table.serialize
local formatters, format, rep = string.formatters, string.format, string.rep

local allocate = utilities.storage.allocate

local context     = context
local nodes       = nodes
local node        = node

local traverse    = nodes.traverse
local is_node     = nodes.is_node

local nodecodes   = nodes.nodecodes
local subtcodes   = nodes.codes
local getfields   = nodes.fields

local tonode      = nodes.tonode
local tonut       = nodes.tonut

local hlist_code  = nodecodes.hlist
local vlist_code  = nodecodes.vlist

----- utfchar     = utf.char
local f_char      = formatters["%U"]
local f_attr      = formatters["<%i>"]
----- fontchars   = { } table.setmetatableindex(fontchars,function(t,k) fontchars = fonts.hashes.characters return fontchars[k] end)

----- f_char      = utilities.strings.chkuni -- formatters["%!chkuni!"]

-- this needs checking with the latest state of affairs:

local expand = allocate ( tohash {
    -- text:
    "list",         -- list_ptr & ins_ptr & adjust_ptr
    "pre",          --
    "post",         --
    "replace",      -- nobreak
    "top_skip",     --
    "attr",         --
    "components",   -- lig_ptr
    "box_left",     --
    "box_right",    --
    "glyph",        -- margin_char
    "leader",       -- leader_ptr
    "action",       -- action_ptr
    "value",        -- user_defined nodes with subtype 'a' en 'n'
    "head",
    -- math:
    "nucleus",
    "sup",
    "sub",
    "list",
    "num",
    "denom",
    "left",
    "right",
    "display",
    "text",
    "script",
    "scriptscript",
    "delim",
    "degree",
    "accent",
    "bot_accent",
} )

-- page_insert: "height", "last_ins_ptr", "best_ins_ptr"
-- split_insert:  "height", "last_ins_ptr", "best_ins_ptr", "broken_ptr", "broken_ins"

local ignore = allocate ( tohash {
    "page_insert",
    "split_insert",
    "ref_count",
} )

local dimension = allocate ( tohash {
    "width", "height", "depth", "shift",
    "stretch", "shrink",
    "xoffset", "yoffset",
    "surround",
    "kern",
    "box_left_width", "box_right_width"
} )

-- flat    : don't use next, but indexes
-- verbose : also add type
-- todo    : speed up

nodes.dimensionfields = dimension
nodes.listablefields  = expand
nodes.ignorablefields = ignore

-- not ok yet:

local function astable(n,sparse) -- not yet ok, might get obsolete anyway
    n = tonode(n)
    local f = getfields(n)
    local t = { }
    for i=1,#f do
        local v = f[i]
        local d = n[v]
        if d then
            if ignore[v] or v == "id" then
                -- skip
            elseif expand[v] then -- or: type(n[v]) ~= "string" or type(n[v]) ~= "number" or type(n[v]) ~= "table"
                t[v] = "<list>"
            elseif sparse then
                if (type(d) == "number" and d ~= 0) or (type(d) == "string" and d ~= "") then
                    t[v] = d
                end
            else
                t[v] = d
            end
        end
    end
    t.type = nodecodes[n.id]
    return t
end

nodes.astable = astable

setinspector("node",function(v) if is_node(v) then printtable(astable(v),tostring(v)) return true end end)

-- under construction:

local function totable(n,flat,verbose,noattributes) -- nicest: n,true,true,true
    local function to_table(n,flat,verbose,noattributes) -- no need to pass
        local f  = getfields(n)
        local tt = { }
        for k=1,#f do
            local v = f[k]
            local nv = v and n[v]
            if nv then
                if ignore[v] then
                    -- skip
                elseif noattributes and v == "attr" then
                    tt[v] = f_attr(tonut(nv))
                    -- skip
                elseif v == "prev" then
                    tt[v] = "<node>"
                elseif expand[v] then
                    if type(nv) == "number" or type(nv) == "string" then
                        tt[v] = nv
                    else
                        tt[v] = totable(nv,flat,verbose,noattributes)
                    end
                elseif type(nv) == "table" then
                    tt[v] = nv -- totable(nv,flat,verbose) -- data
                else
                    tt[v] = nv
                end
            end
        end
        if verbose then
            local subtype = tt.subtype
            local id = tt.id
            local nodename = nodecodes[id]
            tt.id = nodename
            local subtypes = subtcodes[nodename]
            if subtypes then
                tt.subtype = subtypes[subtype]
            elseif subtype == 0 then
                tt.subtype = nil
            else
                -- we need a table
            end
            if tt.char then
                tt.char = f_char(tt.char)
            end
            if tt.small_char then
                tt.small_char = f_char(tt.small_char)
            end
            if tt.large_char then
                tt.large_char = f_char(tt.large_char)
            end
        end
        return tt
    end
    if n then
        if flat then
            local t, tn = { }, 0
            while n do
                tn = tn + 1
                local nt = to_table(n,flat,verbose,noattributes)
                t[tn] = nt
                nt.next = nil
                nt.prev = nil
                n = n.next
            end
            return t
        else
            local t = to_table(n,flat,verbose,noattributes)
            local n = n.next
            if n then
                t.next = totable(n,flat,verbose,noattributes)
            end
            return t
        end
    else
        return { }
    end
end

nodes.totable = function(n,...) return totable(tonode(n),...) end
nodes.totree  = function(n)     return totable(tonode(n),true,true,true) end -- no attributes, todo: attributes in k,v list

local function key(k)
    return ((type(k) == "number") and "["..k.."]") or k
end

function nodes.serialize(root,flat,verbose,noattributes,name)
    return serialize(totable(tonode(root),flat,verbose,noattributes),name)
end

function nodes.serializebox(n,flat,verbose,noattributes,name)
    return serialize(totable(tex.box[n],flat,verbose,noattributes),name)
end

function nodes.visualizebox(n,flat,verbose,noattributes,name)
    context.tocontext(totable(tex.box[n],flat,verbose,noattributes),name)
end

function nodes.list(head,n) -- name might change to nodes.type -- to be checked .. will move to module anyway
    head = tonode(head)
    if not n then
        context.starttyping(true)
    end
    while head do
        local id = head.id
        context(rep(" ",n or 0) .. tostring(head) .. "\n")
        if id == hlist_code or id == vlist_code then
            nodes.list(head.list,(n or 0)+1)
        end
        head = head.next
    end
    if not n then
        context.stoptyping(true)
    end
end

function nodes.print(head,n)
    head = tonode(head)
    while head do
        local id = head.id
        logs.writer(string.formatters["%w%S"],n or 0,head)
        if id == hlist_code or id == vlist_code then
            nodes.print(head.list,(n or 0)+1)
        end
        head = head.next
    end
end

-- quick hack, nicer is to have a proper expand per node type
-- already prepared

local function apply(n,action)
    while n do
        action(n)
        local id = n.id
        if id == hlist_code or id == vlist_code then
            apply(n.list,action)
        end
        n = n.next
    end
end

nodes.apply = apply

local nuts    = nodes.nuts
local getid   = nuts.getid
local getlist = nuts.getlist
local getnext = nuts.getnext

local function apply(n,action)
    while n do
        action(n)
        local id = getid(n)
        if id == hlist_code or id == vlist_code then
            local list = getlist(n,action)
            if list then
                apply(list,action)
            end
        end
        n = getnext(n)
    end
end

nuts.apply = apply