1  -- luasnip.lua
  2  
  3  local M = {}
  4  local ls = require('luasnip')
  5  -- local lsnip = require('luasnip.loaders.from_vscode').lazy_load()
  6  
  7  local s = ls.snippet
  8  local t = ls.text_node
  9  local i = ls.insert_node
 10  local extras = require('luasnip.extras')
 11  local rep = extras.rep
 12  local fmt = require('luasnip.extras.fmt').fmt
 13  local c = ls.choice_node
 14  local f = ls.function_node
 15  local d = ls.dynamic_node
 16  -- local sn = ls.snippet_node
 17  
 18  vim.keymap.set({ 'i', 's' }, '<A-n>', function()
 19    if ls.choice_active() then
 20      ls.change_choice(1)
 21    end
 22  end, { desc = 'Luasnip: next choice' })
 23  
 24  vim.keymap.set({ 'i', 's' }, '<A-k>', function()
 25    if ls.expand_or_jumpable() then
 26      ls.expand_or_jump()
 27    end
 28  end, { silent = true, desc = 'Luasnip: expand or jump forward' })
 29  
 30  vim.keymap.set({ 'i', 's' }, '<A-j>', function()
 31    if ls.jumpable(-1) then
 32      ls.jump(-1)
 33    end
 34  end, { silent = true, desc = 'Luasnip: jump backward' })
 35  
 36  ls.add_snippets('lua', {
 37    s('hello', {
 38      t('print("hello '),
 39      i(1),
 40      t(' world")'),
 41    }),
 42  
 43    s('if', {
 44      t('if '),
 45      i(1, 'true'),
 46      t(' then '),
 47      i(2),
 48      t(' end'),
 49    }),
 50  })
 51  
 52  ls.add_snippets('tex', {
 53    s('beg', {
 54      t('\\begin{'),
 55      i(1),
 56      t('}'),
 57      t({ '', '\t' }),
 58      i(0),
 59      t({ '', '\\end{' }),
 60      rep(1),
 61      t('}'),
 62    }),
 63  })
 64  
 65  ls.add_snippets('cs', {
 66    s(
 67      'logc',
 68      fmt([[Debug.Log($"<color={}>{}</color>");]], {
 69        c(1, {
 70          t('red'),
 71          t('green'),
 72          t('blue'),
 73          t('cyan'),
 74          t('magenta'),
 75        }),
 76        i(2),
 77      })
 78    ),
 79  })
 80  
 81  ls.add_snippets('typescriptreact', {
 82  
 83    -- 1st version
 84    s('co', {
 85      t('position(['),
 86      f(function()
 87        local register_data = vim.fn.getreg() .. ''
 88        if string.match(register_data, '[%d-]+,%s*[%d-]+') then
 89          return register_data
 90        else
 91          print('register does not contain the pattern')
 92        end
 93      end),
 94      t('])'),
 95    }),
 96  
 97    s('co', {
 98      d(function()
 99        local register_data = vim.fn.getreg() .. ''
100        if string.match(register_data, '[%d-]+,%s*[%d-]+') then
101          return M.sn(nil, {
102            M.t('position([' .. register_data .. '])'),
103          })
104        else
105          print('register does not contain the pattern')
106          return M.sn(nil, {})
107        end
108      end),
109      i(1),
110    }),
111  })
112  
113  return M