feat(snip): markup wrapping snippets

lua/typstar/autosnippets.lua

@@ -31,13 +31,19 @@ function M.cap(i)
     return luasnip.function_node(function(_, snip) return snip.captures[i] end)
 end
 
-function M.get_visual(args, parent)
+function M.visual(idx, default)
+    default = default or ''
+    return luasnip.dynamic_node(
+        idx,
+        function(args, parent)
             if (#parent.snippet.env.LS_SELECT_RAW > 0) then
-        return luasnip.snippet_node(nil, luasnip.insert_node(1, parent.snippet.env.LS_SELECT_RAW))
-    else -- If LS_SELECT_RAW is empty, return a blank insert node
-        return luasnip.snippet_node(nil, luasnip.insert_node(1))
+                return luasnip.snippet_node(nil, luasnip.text_node(parent.snippet.env.LS_SELECT_RAW))
+            else -- If LS_SELECT_RAW is empty, return an insert node
+                return luasnip.snippet_node(nil, luasnip.insert_node(1, default))
             end
         end
+    )
+end
 
 function M.ri(insert_node_id)
     return luasnip.function_node(function(args) return args[1][1] end, insert_node_id)
@@ -62,7 +68,7 @@ function M.snip(trigger, expand, insert, condition, priority, wordTrig)
 end
 
 function M.start_snip(trigger, expand, insert, condition, priority)
-    return M.snip('^\\s*' .. trigger, expand, insert, condition, priority)
+    return M.snip('^(\\s*)' .. trigger, '<>' .. expand, { M.cap(1), unpack(insert) }, condition, priority)
 end
 
 function M.engine(trigger, opts)

lua/typstar/config.lua

@@ -19,10 +19,10 @@ local default_config = {
     snippets = {
         enable = true,
         modules = { -- enable modules from ./snippets
-            'document',
             'letters',
             'math',
             'matrix',
+            'markup',
             'visual',
         }
     },

lua/typstar/snippets/document.lua

@@ -1,36 +0,0 @@
-local ls = require('luasnip')
-local i = ls.insert_node
-local d = ls.dynamic_node
-
-local helper = require('typstar.autosnippets')
-local snip = helper.snip
-local start = helper.start_snip
-local markup = helper.in_markup
-
-
-local ctheorems = {
-    { 'tem', 'theorem',    markup },
-    { 'pro', 'proof',      markup },
-    { 'axi', 'axiom',      markup },
-    { 'cor', 'corollary',  markup },
-    { 'lem', 'lemma',      markup },
-    { 'def', 'definition', markup },
-    { 'exa', 'example',    markup },
-    { 'rem', 'remark',     markup },
-}
-
-local ctheoremsstr = '#%s[\n\t<>\n]'
-local document_snippets = {}
-
-for _, val in pairs(ctheorems) do
-    local snippet = start(val[1], string.format(ctheoremsstr, val[2]), { i(1) }, val[3])
-    table.insert(document_snippets, snippet)
-end
-
-return {
-    start('dm', '$\n\t<>\n$', { i(1) }, markup),
-    snip('ll', ' $<>$', { i(1, '1+1') }, markup),
-    start('fla', '#flashcard(0)[<>][\n\t<>\n]', { i(1, "flashcard"), i(2) }, markup),
-    start('flA', '#flashcard(0, "<>")[\n\t<>\n]', { i(1, "flashcard"), i(2) }, markup),
-    unpack(document_snippets),
-}

lua/typstar/snippets/markup.lua

@@ -0,0 +1,52 @@
+local ls = require('luasnip')
+local i = ls.insert_node
+
+local helper = require('typstar.autosnippets')
+local cap = helper.cap
+local markup = helper.in_markup
+local visual = helper.visual
+local snip = helper.snip
+local start = helper.start_snip
+
+
+local ctheorems = {
+    { 'tem', 'theorem' },
+    { 'pro', 'proof' },
+    { 'axi', 'axiom' },
+    { 'cor', 'corollary' },
+    { 'lem', 'lemma' },
+    { 'def', 'definition' },
+    { 'exa', 'example' },
+    { 'rem', 'remark' },
+}
+
+local wrappings = {
+    { 'll',  '$',           '$', '1+1' },
+    { 'BLD', '*',           '*', 'abc' },
+    { 'ITL', '_',           '_', 'abc' },
+    { 'HIG', '#highlight[', ']', 'abc' },
+    { 'UND', '#underline[', ']', 'abc' },
+}
+
+local document_snippets = {}
+local ctheoremsstr = '#%s[\n<>\t<>\n<>]'
+local wrappingsstr = '%s<>%s'
+
+for _, val in pairs(ctheorems) do
+    local snippet = start(val[1], string.format(ctheoremsstr, val[2]), { cap(1), visual(1), cap(1) }, markup)
+    table.insert(document_snippets, snippet)
+end
+
+for _, val in pairs(wrappings) do
+    local snippet = snip(val[1], string.format(wrappingsstr, val[2], val[3]), { visual(1, val[4]) }, markup)
+    table.insert(document_snippets, snippet)
+end
+
+return {
+    start('dm', '$\n<>\t<>\n<>$', { cap(1), visual(1), cap(1) }, markup),
+    start('fla', '#flashcard(0)[<>][\n<>\t<>\n<>]', { i(1, "flashcard"), cap(1), visual(2), cap(1) }, markup),
+    start('flA', '#flashcard(0, "<>")[\n<>\t<>\n<>]', { i(1, "flashcard"), cap(1), visual(2), cap(1) }, markup),
+    snip('IMP', '$=>>$ ', {}, markup),
+    snip('IFF', '$<<=>>$ ', {}, markup),
+    unpack(document_snippets),
+}