Add language_csharp.lua

2 files changed, 114 insertions, 0 deletions

diff --git a/README.md b/README.md
index 3e509f0..c53be00 100644
--- a/README.md
+++ b/README.md
@@ -24,6 +24,7 @@ Plugin | Description
 [`indentguide`](plugins/indentguide.lua?raw=1) | Adds indent guides *([screenshot](https://user-images.githubusercontent.com/3920290/79640716-f9860000-818a-11ea-9c3b-26d10dd0e0c0.png))*
 [`language_angelscript`](plugins/language_angelscript.lua?raw=1) | Syntax for the [Angelscript](https://www.angelcode.com/angelscript/) programming language
 [`language_cpp`](plugins/language_cpp.lua?raw=1) | Syntax for the [C++](https://isocpp.org/) programming language
+[`language_csharp`](plugins/language_csharp.lua?raw=1) | Syntax for the [C#](http://csharp.net) programming language 
 [`language_fe`](plugins/language_fe.lua?raw=1) | Syntax for the [fe](https://github.com/rxi/fe) programming language
 [`language_go`](plugins/language_go.lua?raw=1) | Syntax for the [Go](https://golang.org/) programming language
 [`language_jiyu`](plugins/language_jiyu.lua?raw=1) | Syntax for the [jiyu](https://github.com/machinamentum/jiyu) programming language
diff --git a/plugins/language_csharp.lua b/plugins/language_csharp.lua
new file mode 100644
index 0000000..85c9cf4
--- /dev/null
+++ b/plugins/language_csharp.lua
@@ -0,0 +1,113 @@
+local syntax = require "core.syntax"
+local common = require "core.common"
+local style = require "core.style"
+
+-- additional syntax highlighting for character (same as string)
+style.syntax["character"] = style.syntax["string"]
+
+syntax.add {
+  files = "%.cs$",
+  comment = "//",
+  patterns = {
+    { pattern = "//.-\n",               type = "comment"  },
+    { pattern = { "/%*", "%*/" },       type = "comment"  },
+    { pattern = { '"', '"', '\\' },     type = "string"   },
+    { pattern = "'\\x%x?%x?%x?%x'",     type = "character"}, -- hexadecimal escape sequence
+    { pattern = "'\\u%x%x%x%x'",        type = "character"}, -- unicode escape sequence
+    { pattern = "'\\?.'",               type = "character"}, -- character literal
+    { pattern = "-?0x%x+",              type = "number"   },
+    { pattern = "-?%d+[%d%.eE]*f?",     type = "number"   },
+    { pattern = "-?%.?%d+f?",           type = "number"   },
+    { pattern = "[%+%-=/%*%^%%<>!~|&]", type = "operator" },
+    { pattern = "%?%?",                 type = "operator" }, -- ?? null-coalescing
+    { pattern = "%?%.",                 type = "operator" }, -- ?. null-conditional
+    { pattern = "[%a_][%w_]*%f[(]",     type = "function" },
+    { pattern = "[%a_][%w_]*",          type = "symbol"   },
+  },
+  symbols = {
+    -- keywords
+    ["abstract"]   = "keyword",
+    ["as"]         = "keyword",
+    ["await"]      = "keyword",
+    ["base"]       = "keyword",
+    ["break"]      = "keyword",
+    ["case"]       = "keyword",
+    ["catch"]      = "keyword",
+    ["checked"]    = "keyword",
+    ["class"]      = "keyword",
+    ["const"]      = "keyword",
+    ["continue"]   = "keyword",
+    ["default"]    = "keyword",
+    ["delegate"]   = "keyword",
+    ["do"]         = "keyword",
+    ["else"]       = "keyword",
+    ["enum"]       = "keyword",
+    ["event"]      = "keyword",
+    ["explicit"]   = "keyword",
+    ["extern"]     = "keyword",
+    ["finally"]    = "keyword",
+    ["fixed"]      = "keyword",
+    ["for"]        = "keyword",
+    ["foreach"]    = "keyword",
+    ["goto"]       = "keyword",
+    ["if"]         = "keyword",
+    ["implicit"]   = "keyword",
+    ["in"]         = "keyword",
+    ["interface"]  = "keyword",
+    ["internal"]   = "keyword",
+    ["is"]         = "keyword",
+    ["lock"]       = "keyword",
+    ["namespace"]  = "keyword",
+    ["new"]        = "keyword",
+    ["object"]     = "keyword",
+    ["operator"]   = "keyword",
+    ["out"]        = "keyword",
+    ["override"]   = "keyword",
+    ["params"]     = "keyword",
+    ["private"]    = "keyword",
+    ["protected"]  = "keyword",
+    ["public"]     = "keyword",
+    ["readonly"]   = "keyword",
+    ["ref"]        = "keyword",
+    ["return"]     = "keyword",
+    ["sealed"]     = "keyword",
+    ["sizeof"]     = "keyword",
+    ["stackalloc"] = "keyword",
+    ["static"]     = "keyword",
+    ["struct"]     = "keyword",
+    ["switch"]     = "keyword",
+    ["this"]       = "keyword",
+    ["throw"]      = "keyword",
+    ["try"]        = "keyword",
+    ["typeof"]     = "keyword",
+    ["unchecked"]  = "keyword",
+    ["unsafe"]     = "keyword",
+    ["using"]      = "keyword",
+    ["var"]        = "keyword",
+    ["virtual"]    = "keyword",
+    ["volatile"]   = "keyword",
+    ["while"]      = "keyword",
+    ["yield"]      = "keyword",
+    -- types
+    ["bool"]       = "keyword2",
+    ["byte"]       = "keyword2",
+    ["char"]       = "keyword2",
+    ["decimal"]    = "keyword2",
+    ["double"]     = "keyword2",
+    ["float"]      = "keyword2",
+    ["int"]        = "keyword2",
+    ["long"]       = "keyword2",
+    ["sbyte"]      = "keyword2",
+    ["short"]      = "keyword2",
+    ["string"]     = "keyword2",
+    ["uint"]       = "keyword2",
+    ["ulong"]      = "keyword2",
+    ["ushort"]     = "keyword2",
+    ["void"]       = "keyword2",
+    -- literals
+    ["true"]       = "literal",
+    ["false"]      = "literal",
+    ["null"]       = "literal",
+  },
+}
+