Method readDocument

yaml/_loader_state.ts:1794–1853

()

  }

  readDocument() {
    const documentStart = this.#scanner.position;

    this.checkLineBreaks = false;
    this.tagMap = new Map();
    this.anchorMap = new Map();

    const hasDirectives = this.readDirectives();

    this.skipSeparationSpace(true, -1);

    let result = null;

    if (
      this.lineIndent === 0 &&
      this.#scanner.peek() === MINUS &&
      this.#scanner.peek(1) === MINUS &&
      this.#scanner.peek(2) === MINUS
    ) {
      this.#scanner.position += 3;
      this.skipSeparationSpace(true, -1);
    } else if (hasDirectives) {
      throw this.#createError(
        "Cannot read document: directives end mark is expected",
      );
    }

    const newState = this.composeNode({
      parentIndent: this.lineIndent - 1,
      nodeContext: CONTEXT_BLOCK_OUT,
      allowToSeek: false,
      allowCompact: true,
    });
    if (newState) result = newState.result;
    this.skipSeparationSpace(true, -1);

    if (
      this.checkLineBreaks &&
      PATTERN_NON_ASCII_LINE_BREAKS_REGEXP.test(
        this.#scanner.source.slice(documentStart, this.#scanner.position),
      )
    ) {
      this.dispatchWarning("non-ASCII line breaks are interpreted as content");
    }

    if (
      this.#scanner.position === this.lineStart && this.testDocumentSeparator()
    ) {
      if (this.#scanner.peek() === DOT) {
        this.#scanner.position += 3;
        this.skipSeparationSpace(true, -1);
      }
    } else if (!this.#scanner.eof()) {
      throw this.#createError(
        "Cannot read document: end of the stream or a document separator is expected",
      );
    }