Include version number in lsp and cli

Fixes #61.

blueprint-compiler.py

@@ -26,7 +26,13 @@ dirname = os.path.join(os.path.dirname(os.path.dirname(__file__)), "share", "blu
 if os.path.isdir(os.path.join(dirname, "blueprintcompiler")):
     sys.path.insert(0, dirname)
 
+# Get the configured (or, if running from source, not configured) version number
+version = "@VERSION@"
+
+def literal(key):
+    return "@" + key + "@"
+
 from blueprintcompiler import main
 
 if __name__ == "__main__":
-    main.main()
+    main.main("uninstalled" if version == literal("VERSION") else version)

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 = "uninstalled"
-VERSION = "0.1.0"
-
 
 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()

meson.build

@@ -17,13 +17,16 @@ configure_file(
   install_dir: join_paths(datadir, 'pkgconfig'),
 )
 
-install_data(
+blueprint_compiler = configure_file(
-  'blueprint-compiler.py',
+  input: 'blueprint-compiler.py',
+  output: 'blueprint-compiler',
+  configuration: {
+    'VERSION': meson.project_version(),
+  },
   install_dir: get_option('bindir'),
-  rename: 'blueprint-compiler',
 )
 
-meson.override_find_program('blueprint-compiler', find_program('blueprint-compiler.py'))
+meson.override_find_program('blueprint-compiler', blueprint_compiler)
 
 if not meson.is_subproject()
   install_subdir('blueprintcompiler', install_dir: datadir / 'blueprint-compiler')