fix(completion): don't complete anything in parameters

Fixes #152

Author: i582

server/src/completion/CompletionContext.ts

@@ -160,6 +160,13 @@ export class CompletionContext {
         if (parent.type.endsWith("_function")) {
             this.isExpression = false
             this.isStatement = false
+            this.inParameter = true
+        }
+
+        if (parent.type === "ERROR" && parent.parent?.type.endsWith("_function")) {
+            this.isExpression = false
+            this.isStatement = false
+            this.inParameter = true
         }
 
         if (parent.type === "trait_list") {

server/src/e2e/suite/testcases/completion/contracts.test

@@ -50,3 +50,37 @@ contract Foo {
 14 try-catch
 14 until
 14 while
+
+========================================================================
+Completion inside `receive()` parameters
+========================================================================
+contract Foo {
+    receive(<caret>) {}
+}
+------------------------------------------------------------------------
+0  contract
+0  Foo
+0  receive
+
+========================================================================
+Completion inside `external()` parameters
+========================================================================
+contract Foo {
+    external(<caret>) {}
+}
+------------------------------------------------------------------------
+0  contract
+0  external
+0  Foo
+
+========================================================================
+Completion inside `fun()` parameters
+========================================================================
+contract Foo {
+    fun foo(<caret>) {}
+}
+------------------------------------------------------------------------
+0  contract
+0  Foo
+0  foo
+0  fun