-
Notifications
You must be signed in to change notification settings - Fork 0
/
LuaSnip_info_b.txt
216 lines (133 loc) · 6.34 KB
/
LuaSnip_info_b.txt
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
How to write snippets for LuaSnip using Lua with dynamic nodes.
:help luasnip-variables
:help luasnip-dynamicnode
Creating LaTeX tables in Neovim using LuaSnip snippets
https://stackoverflow.com/questions/77069143/creating-latex-tables-in-neovim-using-luasnip-snippets
https://evesdropper.dev/files/luasnip/choice-dynamic/
local ls = require("luasnip")
local util = require("luasnip.util.util")
local node_util = require("luasnip.nodes.util")
local function find_dynamic_node(node)
-- the dynamicNode-key is set on snippets generated by a dynamicNode only (its'
-- actual use is to refer to the dynamicNode that generated the snippet).
while not node.dynamicNode do
node = node.parent
end
return node.dynamicNode
end
local external_update_id = 0
-- func_indx to update the dynamicNode with different functions.
function dynamic_node_external_update(func_indx)
-- most of this function is about restoring the cursor to the correct
-- position+mode, the important part are the few lines from
-- `dynamic_node.snip:store()`.
-- find current node and the innermost dynamicNode it is inside.
local current_node = ls.session.current_nodes[vim.api.nvim_get_current_buf()]
local dynamic_node = find_dynamic_node(current_node)
-- to identify current node in new snippet, if it is available.
external_update_id = external_update_id + 1
current_node.external_update_id = external_update_id
-- store which mode we're in to restore later.
local insert_pre_call = vim.fn.mode() == "i"
-- is byte-indexed! Doesn't matter here, but important to be aware of.
local cursor_pos_pre_relative = util.pos_sub(
util.get_cursor_0ind(),
current_node.mark:pos_begin_raw()
)
-- leave current generated snippet.
node_util.leave_nodes_between(dynamic_node.snip, current_node)
-- call update-function.
local func = dynamic_node.user_args[func_indx]
if func then
-- the same snippet passed to the dynamicNode-function. Any output from func
-- should be stored in it under some unused key.
func(dynamic_node.parent.snippet)
end
-- last_args is used to store the last args that were used to generate the
-- snippet. If this function is called, these will most probably not have
-- changed, so they are set to nil, which will force an update.
dynamic_node.last_args = nil
dynamic_node:update()
-- everything below here isn't strictly necessary, but it's pretty nice to have.
-- try to find the node we marked earlier.
local target_node = dynamic_node:find_node(function(test_node)
return test_node.external_update_id == external_update_id
end)
if target_node then
-- the node that the cursor was in when changeChoice was called exists
-- in the active choice! Enter it and all nodes between it and this choiceNode,
-- then set the cursor.
node_util.enter_nodes_between(dynamic_node, target_node)
if insert_pre_call then
util.set_cursor_0ind(
util.pos_add(
target_node.mark:pos_begin_raw(),
cursor_pos_pre_relative
)
)
else
node_util.select_node(target_node)
end
-- set the new current node correctly.
ls.session.current_nodes[vim.api.nvim_get_current_buf()] = target_node
else
-- the marked node wasn't found, just jump into the new snippet noremally.
ls.session.current_nodes[vim.api.nvim_get_current_buf()] = dynamic_node.snip:jump_into(1)
end
end
---------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------
vim.api.nvim_set_keymap('i', "<C-t>", '<cmd>lua _G.dynamic_node_external_update(1)<Cr>', {noremap = true})
vim.api.nvim_set_keymap('s', "<C-t>", '<cmd>lua _G.dynamic_node_external_update(1)<Cr>', {noremap = true})
vim.api.nvim_set_keymap('i', "<C-g>", '<cmd>lua _G.dynamic_node_external_update(2)<Cr>', {noremap = true})
vim.api.nvim_set_keymap('s', "<C-g>", '<cmd>lua _G.dynamic_node_external_update(2)<Cr>', {noremap = true}
---------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------------------------------
local function column_count_from_string(descr)
-- this won't work for all cases, but it's simple to improve
-- (feel free to do so! :D )
return #(descr:gsub("[^clm]", ""))
end
-- function for the dynamicNode.
local tab = function(args, snip)
local cols = column_count_from_string(args[1][1])
-- snip.rows will not be set by default, so handle that case.
-- it's also the value set by the functions called from dynamic_node_external_update().
if not snip.rows then
snip.rows = 1
end
local nodes = {}
-- keep track of which insert-index we're at.
local ins_indx = 1
for j = 1, snip.rows do
-- use restoreNode to not lose content when updating.
table.insert(nodes, r(ins_indx, tostring(j).."x1", i(1)))
ins_indx = ins_indx+1
for k = 2, cols do
table.insert(nodes, t" & ")
table.insert(nodes, r(ins_indx, tostring(j).."x"..tostring(k), i(1)))
ins_indx = ins_indx+1
end
table.insert(nodes, t{"\\\\", ""})
end
-- fix last node.
nodes[#nodes] = t""
return sn(nil, nodes)
end
s("tab", fmt([[
\begin{{tabular}}{{{}}}
{}
\end{{tabular}}
]], {i(1, "c"), d(2, tab, {1}, {
user_args = {
-- Pass the functions used to manually update the dynamicNode as user args.
-- The n-th of these functions will be called by dynamic_node_external_update(n).
-- These functions are pretty simple, there's probably some cool stuff one could do
-- with `ui.input`
function(snip) snip.rows = snip.rows + 1 end,
-- don't drop below one.
function(snip) snip.rows = math.max(snip.rows - 1, 1) end
}
} )}))