feat(cpp): add more snippets

Author: TwIStOy

README.md

@@ -53,6 +53,8 @@ ls.setup({
 | `\|filter`  | Expand to ranges::views::filter pipe.                                                            |        No        |
 |    `cpo`    | Expand to customize point object.                                                                |        No        |
 | `ns%s(%S+)` | Expand to namespace block (including comments).                                                  |        No        |
+|    `itf`    | Expand to a struct with default virtual destruction.                                             |        No        |
+|    `pvf`    | Expand to a pure virtual function declaration.                                                   |        No        |
 
 #### Auto-snippets
 
@@ -75,6 +77,8 @@ ls.setup({
 |  `i32`   | Expand to `int32_t`.                                     |              No               |
 |  `i64`   | Expand to `int64_t`.                                     |              No               |
 | `t(%s)!` | Evaluate (QET) marker, and expand to typename.           |              No               |
+|   `#"`   | Expand to include statement with quotes. `#include ""`.  |              No               |
+|   `#<`   | Expand to include statement with `<>`. `#include <>`.    |              No               |
 
 ##### Quick Expand Type markers
 

lua/luasnip-snippets/snippets/cpp/default.lua

@@ -177,6 +177,30 @@ return {
     },
   },
 
+  -- include short cuts
+  snippet {
+    '#"',
+    name = 'include ""',
+    dscr = "#include with quotes",
+    mode = "bA",
+    nodes = {
+      t('#include "'),
+      i(1, "header"),
+      t('"'),
+    },
+  },
+  snippet {
+    "#<",
+    name = "include <>",
+    dscr = "#include with <>",
+    mode = "bA",
+    nodes = {
+      t("#include <"),
+      i(1, "header"),
+      t(">"),
+    },
+  },
+
   -- fast int types
   int_type_snippet(8, true),
   int_type_snippet(8, false),

lua/luasnip-snippets/snippets/cpp/statements.lua

@@ -4,6 +4,10 @@ local d = ls.dynamic_node
 local sn = ls.snippet_node
 local t = ls.text_node
 local fmta = require("luasnip.extras.fmt").fmta
+local snippet = require("luasnip-snippets.nodes").construct_snippet
+local i = require("luasnip-snippets.nodes").insert_node
+local c = require("luasnip-snippets.nodes").choice_node
+local rep = require("luasnip.extras").rep
 
 local function inject_class_name(_, line_to_cursor, match, captures)
   -- check if at the line begin
@@ -135,4 +139,36 @@ return {
     <cls>(<cls>&&) = delete;
     ]]
   ),
+  snippet {
+    "itf",
+    name = "Interface",
+    dscr = "Declare interface",
+    mode = "bw",
+    nodes = fmta(
+      [[
+        struct <> {
+          virtual ~<>() = default;
+
+          <>
+        };
+        ]],
+      {
+        i(1, "Interface"),
+        rep(1),
+        i(0),
+      }
+    ),
+  },
+  snippet {
+    "pvf",
+    name = "Pure virtual function",
+    dscr = "Declare pure virtual function",
+    mode = "bw",
+    nodes = fmta("virtual <ret_t> <name>(<args>) <specifier> = 0;", {
+      name = i(1, "func", { dscr = "Function name" }),
+      args = i(2, "args", { dscr = "Function arguments" }),
+      specifier = i(3, "const", { dscr = "Function specifier" }),
+      ret_t = i(4, "void", { dscr = "Return type" }),
+    }),
+  },
 }