add debounce

vyper_lsp/debounce.py

@@ -0,0 +1,19 @@
+import threading
+
+
+class Debouncer:
+    def __init__(self, wait):
+        self.wait = wait
+        self.timer = None
+        self.lock = threading.Lock()
+
+    def debounce(self, func):
+        def debounced(*args, **kwargs):
+            with self.lock:
+                if self.timer is not None:
+                    self.timer.cancel()  # Cancel the existing timer if there is one
+                # Create a new timer that will call func with the latest arguments
+                self.timer = threading.Timer(self.wait, lambda: func(*args, **kwargs))
+                self.timer.start()
+
+        return debounced

vyper_lsp/main.py

@@ -29,10 +29,12 @@
 from pygls.server import LanguageServer
 from vyper_lsp.analyzer.AstAnalyzer import AstAnalyzer
 from vyper_lsp.analyzer.SourceAnalyzer import SourceAnalyzer
+from vyper_lsp.debounce import Debouncer
 
 from vyper_lsp.navigation import ASTNavigator
 from vyper_lsp.utils import get_installed_vyper_version
 
+
 from .ast import AST
 
 server = LanguageServer("vyper", "v0.0.1")
@@ -48,6 +50,8 @@
 
 ast = AST()
 
+debouncer = Debouncer(wait=0.5)
+
 
 def check_minimum_vyper_version():
     vy_version = get_installed_vyper_version()
@@ -58,6 +62,7 @@ def check_minimum_vyper_version():
         )
 
 
+@debouncer.debounce
 def validate_doc(ls, params):
     text_doc = ls.workspace.get_document(params.text_document.uri)
     source_diagnostics = source_analyzer.get_diagnostics(text_doc)