eval/src/vespa/eval/eval/delete_node.cpp


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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.

#include "key_gen.h"
#include "node_visitor.h"
#include "node_traverser.h"

namespace vespalib::eval {

namespace {

struct ChildReaper : public NodeTraverser, public NodeHandler {
    void handle(nodes::Node_UP) override {}
    bool open(const nodes::Node &) override { return true; }
    void close(const nodes::Node &node) override {
        nodes::Node &mutable_node = const_cast<nodes::Node&>(node);
        mutable_node.detach_children(*this);
    }
};

} // namespace vespalib::nodes::<unnamed>

void
delete_node(nodes::Node_UP node)
{
    if (node) {
        ChildReaper reaper;
        node->traverse(reaper);
    }
}

}