Adds way to skip header file provider

With the VsCode C++ extension 0.17, it now automatically handles #include providers when properly set up.

This shouldn't be completely removed from this extension as there are still some use cases, but this adds a way to disable the arduino extensions provider if the user wants to.

Author: ThadHouse

package.json

@@ -454,6 +454,10 @@
         "arduino.ignoreBoards": {
           "type": "array",
           "default": []
+        },
+        "arduino.skipHeaderProvider": {
+          "type": "boolean",
+          "default": false
         }
       }
     },

src/arduino/vscodeSettings.ts

@@ -12,6 +12,7 @@ const configKeys = {
     ENABLE_USB_DETECTOIN: "arduino.enableUSBDetection",
     DISABLE_TESTING_OPEN: "arduino.disableTestingOpen",
     IGNORE_BOARDS: "arduino.ignoreBoards",
+    SKIP_HEADER_PROVIDER: "arduino.skipHeaderProvider",
 };
 
 export interface IVscodeSettings {
@@ -22,6 +23,7 @@ export interface IVscodeSettings {
     enableUSBDetection: boolean;
     disableTestingOpen: boolean;
     ignoreBoards: string[];
+    skipHeaderProvider: boolean;
     updateAdditionalUrls(urls: string | string[]): void;
 }
 
@@ -69,6 +71,10 @@ export class VscodeSettings implements IVscodeSettings {
         this.setConfigValue(configKeys.IGNORE_BOARDS, value, true);
     }
 
+    public get skipHeaderProvider(): boolean {
+        return this.getConfigValue<boolean>(configKeys.SKIP_HEADER_PROVIDER);
+    }
+
     public async updateAdditionalUrls(value) {
         await this.setConfigValue(configKeys.ADDITIONAL_URLS, value, true);
     }

src/langService/completionProvider.ts

@@ -7,6 +7,7 @@ import * as vscode from "vscode";
 import * as constants from "../common/constants";
 import * as util from "../common/util";
 
+import { VscodeSettings } from "../arduino/vscodeSettings";
 import ArduinoActivator from "../arduinoActivator";
 import ArduinoContext from "../arduinoContext";
 import { ArduinoWorkspace } from "../common/workspace";
@@ -35,6 +36,9 @@ export class CompletionProvider implements vscode.CompletionItemProvider {
 
     public async provideCompletionItems(document: vscode.TextDocument, position: vscode.Position):
          Promise<vscode.CompletionItem[]> {
+        if (VscodeSettings.getInstance().skipHeaderProvider) {
+            return [];
+        }
         if (!ArduinoContext.initialized) {
             await ArduinoActivator.activate();
         }