Method triggerCompletion

src/codemirror.ts:109–166

(
    textModels: CodeMirror.Doc[],
    currentTextModel: CodeMirror.Doc,
    editorOptions: EditorOptions,
    relativePath: string | undefined,
    createDisposables: (() => IDisposable[]) | undefined
  )

  }

  async triggerCompletion(
    textModels: CodeMirror.Doc[],
    currentTextModel: CodeMirror.Doc,
    editorOptions: EditorOptions,
    relativePath: string | undefined,
    createDisposables: (() => IDisposable[]) | undefined
  ): Promise<void> {
    const apiKey = await this.client.apiKeyPoller.apiKey;
    if (apiKey === undefined) {
      return;
    }
    const cursor = currentTextModel.getCursor();
    const { text, utf8ByteOffset, additionalUtf8ByteOffset } = computeTextAndOffsetsForCodeMirror(
      textModels,
      currentTextModel
    );
    const numUtf8Bytes = additionalUtf8ByteOffset + utf8ByteOffset;
    const request = new GetCompletionsRequest({
      metadata: this.client.getMetadata(this.ideInfo, apiKey),
      document: {
        text,
        editorLanguage: editorLanguage(currentTextModel),
        language: language(currentTextModel, relativePath),
        cursorOffset: BigInt(numUtf8Bytes),
        lineEnding: '\n',
        // We could use the regular path which could have a drive: prefix, but
        // this is probably unusual.
        relativePath,
      },
      editorOptions,
    });
    const response = await this.client.getCompletions(request);
    if (response === undefined) {
      return;
    }

    // No more await allowed below this point, given that we've checked for
    // abort, so this must be the latest debounced request.
    this.clearCompletion(
      "about to replace completions if the cursor hasn't moved and we got completions"
    );
    const newCursor = currentTextModel.getCursor();
    if (newCursor.ch !== cursor.ch || newCursor.line !== cursor.line) {
      // TODO(prem): Is this check necessary?
      return;
    }
    if (response.completionItems.length === 0) {
      return;
    }
    const completionItem = response.completionItems[0];
    this.renderCompletion(
      currentTextModel,
      completionItem,
      additionalUtf8ByteOffset,
      apiKey,
      createDisposables ? createDisposables : () => []
    );
  }