Function searchNodeDescending

src/util/nodeFinders.ts:218–243

(
  node: SyntaxNode,
  firstPattern: Pattern,
  patterns: Pattern[]
)

}

function searchNodeDescending(
  node: SyntaxNode,
  firstPattern: Pattern,
  patterns: Pattern[]
): NodePattern {
  let tmpNode = node;
  // Even if descending search we return the "top" node by default.
  let important: NodePattern = [node, firstPattern];
  for (let i = 1; i < patterns.length; ++i) {
    const pattern = patterns[i];
    const children = tmpNode.namedChildren.filter((node) =>
      pattern.typeEquals(node)
    );
    if (children.length !== 1) {
      if (pattern.isOptional) {
        continue;
      }
      return null;
    }
    tmpNode = children[0];
    if (pattern.isImportant) {
      important = [tmpNode, pattern];
    }
  }
  return important;
}

class Pattern {
  type: string;