From cfd3bebfcc081e0a1f53e218ee69ae4984a07423 Mon Sep 17 00:00:00 2001
From: Francesco Abbate <francesco.bbt@gmail.com>
Date: Fri, 18 Jun 2021 12:00:24 +0200
Subject: [PATCH] Provide specific syntax plugin for C++

We have only the problem to attribute the .h either to C or C++ but
we don't have currently any way to discriminate them.
---
 data/plugins/language_c.lua   |  2 +-
 data/plugins/language_cpp.lua | 69 +++++++++++++++++++++++++++++++++++
 2 files changed, 70 insertions(+), 1 deletion(-)
 create mode 100644 data/plugins/language_cpp.lua

diff --git a/data/plugins/language_c.lua b/data/plugins/language_c.lua
index b311884b..836e1692 100644
--- a/data/plugins/language_c.lua
+++ b/data/plugins/language_c.lua
@@ -2,7 +2,7 @@
 local syntax = require "core.syntax"
 
 syntax.add {
-  files = { "%.c$", "%.h$", "%.inl$", "%.cpp$", "%.hpp$" },
+  files = { "%.c$", "%.h$", "%.inl$" },
   comment = "//",
   patterns = {
     { pattern = "//.-\n",                type = "comment" },
diff --git a/data/plugins/language_cpp.lua b/data/plugins/language_cpp.lua
new file mode 100644
index 00000000..2e3b7924
--- /dev/null
+++ b/data/plugins/language_cpp.lua
@@ -0,0 +1,69 @@
+-- mod-version:1 -- lite-xl 1.16
+local syntax = require "core.syntax"
+
+syntax.add {
+  files = { "%.cpp$", "%.h$", "%.hpp$", "%.inl$" },
+  comment = "//",
+  patterns = {
+    { pattern = "//.-\n",                type = "comment" },
+    { pattern = { "/%*", "%*/" },        type = "comment" },
+    { pattern = { '"', '"', '\\' },      type = "string"  },
+    { pattern = { "'", "'", '\\' },      type = "string"  },
+    { pattern = "0x%x+",                 type = "number"  },
+    { pattern = "%d+[%d%.eE]*f?",        type = "number"  },
+    { pattern = "%.?%d+f?",              type = "number"  },
+    { pattern = "[%+%-=/%*%^%%<>!~|&]",  type = "operator" },
+    { pattern = "struct%s()[%a_][%w_]*", type = {"keyword", "keyword2"} },
+    { pattern = "class%s()[%a_][%w_]*",  type = {"keyword", "keyword2"} },
+    { pattern = "union%s()[%a_][%w_]*",  type = {"keyword", "keyword2"} },
+    { pattern = "namespace%s()[%a_][%w_]*",  type = {"keyword", "keyword2"} },
+    { pattern = "[%a_][%w_]*::",         type = "symbol" },
+    { pattern = "::",                    type = "symbol" },
+    -- { pattern = "[%a_][%w_]*%f[(]",      type = "function" },
+    { pattern = "[%a_][%w_]*",           type = "symbol" },
+    { pattern = "#include%s()<.->",      type = {"keyword", "string"} },
+    { pattern = "#[%a_][%w_]*",          type = "keyword" },
+  },
+  symbols = {
+    ["if"]       = "keyword",
+    ["then"]     = "keyword",
+    ["else"]     = "keyword",
+    ["elseif"]   = "keyword",
+    ["do"]       = "keyword",
+    ["while"]    = "keyword",
+    ["for"]      = "keyword",
+    ["break"]    = "keyword",
+    ["continue"] = "keyword",
+    ["return"]   = "keyword",
+    ["goto"]     = "keyword",
+    ["typedef"]  = "keyword",
+    ["enum"]     = "keyword",
+    ["extern"]   = "keyword",
+    ["static"]   = "keyword",
+    ["volatile"] = "keyword",
+    ["const"]    = "keyword",
+    ["inline"]   = "keyword",
+    ["switch"]   = "keyword",
+    ["case"]     = "keyword",
+    ["default"]  = "keyword",
+    ["auto"]     = "keyword",
+    ["void"]     = "keyword",
+    ["template"] = "keyword",
+    ["typename"] = "keyword",
+    ["int"]      = "keyword2",
+    ["short"]    = "keyword2",
+    ["long"]     = "keyword2",
+    ["float"]    = "keyword2",
+    ["double"]   = "keyword2",
+    ["char"]     = "keyword2",
+    ["unsigned"] = "keyword2",
+    ["bool"]     = "keyword2",
+    ["true"]     = "literal",
+    ["false"]    = "literal",
+    ["nullptr"]  = "literal",
+    ["public"]   = "keyword",
+    ["private"]  = "keyword",
+    ["protected"] = "keyword",
+  },
+}
+