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问题描述
使用Eclise JDT,我需要检索任何ASTNode的子节点。
有没有一个可以使用的实用方法?
Using Eclise JDT, I need to retrieve the children of any ASTNode.Is there a utility method somewhere that I could use ?
现在我可以想到的唯一方法是将ASTVisitor子类化并手动处理各种节点找到自己的孩子。但是,要研究每一个节点类型都是很多的工作。
The only way I can think of right now is to subclass ASTVisitor and treat each kind of node manually to find its children. But it's a lot of work to study every node type.
推荐答案
我将从,因为这也是一样的。
I would start by looking at source of ASTView Plugin, since that also does the same thing.
根据
- org.eclipse.jdt.astview.views.ASTViewContentProvider.getNodeChildren(ASTNode)
- org.eclipse.jdt.astview.views.NodeProperty.getChildren()
所需的代码应该看起来像这样
the required code should look something like this
public Object[] getChildren(ASTNode node) {
List list= node.structuralPropertiesForType();
for (int i= 0; i < list.size(); i++) {
StructuralPropertyDescriptor curr= (StructuralPropertyDescriptor) list.get(i);
Object child= node.getStructuralProperty(curr);
if (child instanceof List) {
return ((List) child).toArray();
} else if (child instanceof ASTNode) {
return new Object[] { child };
}
return new Object[0];
}
}
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