Feature: Add completion items for overrides

The bitbake scanner provides the list of active overrides. It is not
recipe specific to be faster.

server/src/BitBakeProjectScanner.ts

@@ -36,6 +36,7 @@ export class BitBakeProjectScanner {
   private _classes: ElementInfo[] = new Array < ElementInfo >()
   private _includes: ElementInfo[] = new Array < ElementInfo >()
   private _recipes: ElementInfo[] = new Array < ElementInfo >()
+  private _overrides: string[] = []
   private _shouldDeepExamine: boolean = false
   private readonly _bitbakeDriver: BitbakeDriver = new BitbakeDriver()
 
@@ -48,6 +49,10 @@ export class BitBakeProjectScanner {
     scanIsPending: false
   }
 
+  get overrides (): string[] {
+    return this._overrides
+  }
+
   get bitbakeDriver (): BitbakeDriver {
     return this._bitbakeDriver
   }
@@ -90,6 +95,7 @@ export class BitBakeProjectScanner {
           this.scanForIncludeFiles()
           this.scanForRecipes()
           this.scanRecipesAppends()
+          this.scanOverrides()
 
           logger.info('scan ready')
           this.printScanStatistic()
@@ -117,6 +123,7 @@ export class BitBakeProjectScanner {
     logger.info(`Recipes:   ${this._recipes.length}`)
     logger.info(`Inc-Files: ${this._includes.length}`)
     logger.info(`bbclass:   ${this._classes.length}`)
+    logger.info(`overrides:   ${this._overrides.length}`)
   }
 
   private scanForClasses (): void {
@@ -231,6 +238,13 @@ export class BitBakeProjectScanner {
     this.scanForRecipesPath()
   }
 
+  scanOverrides (): void {
+    const commandResult = this.executeBitBakeCommand('bitbake-getvar OVERRIDES')
+    const output = commandResult.output.toString()
+    const outerReg = /\nOVERRIDES="(.*)"\n/
+    this._overrides = output.match(outerReg)?.[1].split(':') ?? []
+  }
+
   parseAllRecipes (): boolean {
     logger.debug('parseAllRecipes')
     let parsingSuccess: boolean = true

server/src/connectionHandlers/onCompletion.ts

@@ -18,6 +18,7 @@ import { formatCompletionItems } from '../completions/snippet-utils'
 import { bitBakeDocScanner } from '../BitBakeDocScanner'
 import { BITBAKE_OPERATOR } from '../completions/bitbake-operator'
 import { VARIABLE_FLAGS } from '../completions/variable-flags'
+import bitBakeProjectScanner from '../BitBakeProjectScanner'
 
 export function onCompletionHandler (textDocumentPositionParams: TextDocumentPositionParams): CompletionItem[] {
   logger.debug('onCompletion')
@@ -59,7 +60,16 @@ export function onCompletionHandler (textDocumentPositionParams: TextDocumentPos
         }
       })
 
-      return bitBakeOperatorCompletionItems
+      const bitbakeOverridesCompletionItems: CompletionItem[] = bitBakeProjectScanner.overrides.map((override, index) => {
+        return {
+          label: override,
+          kind: CompletionItemKind.Property,
+          // Present overrides after operators, in order of priority
+          sortText: '~' + String.fromCharCode(21 + index) + override
+        }
+      })
+
+      return [...bitBakeOperatorCompletionItems, ...bitbakeOverridesCompletionItems]
     } else {
       return []
     }