Include version number in lsp and cli

Fixes #61.

blueprintcompiler/lsp.py

@@ -151,6 +151,8 @@ class LanguageServer:
 
     @command("initialize")
     def initialize(self, id, params):
+        from . import main
+
         self.client_capabilities = params.get("capabilities")
         self._send_response(id, {
             "capabilities": {
@@ -167,7 +169,11 @@ class LanguageServer:
                 "completionProvider": {},
                 "codeActionProvider": {},
                 "hoverProvider": True,
-            }
+            },
+            "serverInfo": {
+                "name": "Blueprint",
+                "version": main.VERSION,
+            },
         })
 
     @command("textDocument/didOpen")

blueprintcompiler/main.py

@@ -27,9 +27,7 @@ from . import parser, tokenizer, decompiler, interactive_port
 from .utils import Colors
 from .xml_emitter import XmlEmitter
 
-
-VERSION = "0.1.0"
-
+VERSION = "uninstalled"
 
 class BlueprintApp:
     def main(self):
@@ -53,6 +51,8 @@ class BlueprintApp:
 
         self.add_subcommand("help", "Show this message", self.cmd_help)
 
+        self.parser.add_argument("--version", action="version", version=VERSION)
+
         try:
             opts = self.parser.parse_args()
             opts.func(opts)
@@ -144,5 +144,7 @@ class BlueprintApp:
         return ast.generate(), warnings
 
 
-def main():
+def main(version):
+    global VERSION
+    VERSION = version
     BlueprintApp().main()