Merge branch 'main' into zs/web-ui-improvements

1 files changed, 0 insertions, 813 deletions

diff --git a/thirdparty/ryml/test/test_noderef.cpp b/thirdparty/ryml/test/test_noderef.cpp
deleted file mode 100644
index cfd3363c3..000000000
--- a/thirdparty/ryml/test/test_noderef.cpp
+++ /dev/null
@@ -1,813 +0,0 @@
-#ifndef RYML_SINGLE_HEADER
-#include "c4/yml/std/std.hpp"
-#include "c4/yml/parse.hpp"
-#include "c4/yml/emit.hpp"
-#include <c4/format.hpp>
-#include <c4/yml/detail/checks.hpp>
-#include <c4/yml/detail/print.hpp>
-#endif
-#include "./test_case.hpp"
-#include "./callbacks_tester.hpp"
-
-#include <gtest/gtest.h>
-
-#if defined(_MSC_VER)
-#   pragma warning(push)
-#   pragma warning(disable: 4389) // signed/unsigned mismatch
-#elif defined(__clang__)
-#   pragma clang diagnostic push
-#   pragma clang diagnostic ignored "-Wdollar-in-identifier-extension"
-#elif defined(__GNUC__)
-#   pragma GCC diagnostic push
-#endif
-
-namespace c4 {
-namespace yml {
-
-TEST(NodeRef, general)
-{
-    Tree t;
-
-    NodeRef root(&t);
-
-    //using S = csubstr;
-    //using V = NodeScalar;
-    using N = NodeInit;
-
-    root = N{MAP};
-    root.append_child({"a", "0"});
-    root.append_child({MAP, "b"});
-    root["b"].append_child({SEQ, "seq"});
-    root["b"]["seq"].append_child({"0"});
-    root["b"]["seq"].append_child({"1"});
-    root["b"]["seq"].append_child({"2"});
-    root["b"]["seq"].append_child({NodeScalar{"!!str", "3"}});
-    auto ch4 = root["b"]["seq"][3].append_sibling({"4"});
-    EXPECT_EQ(ch4.id(), root["b"]["seq"][4].id());
-    EXPECT_EQ(ch4.get(), root["b"]["seq"][4].get());
-    EXPECT_EQ((type_bits)root["b"]["seq"][4].type(), (type_bits)VAL);
-    EXPECT_EQ(root["b"]["seq"][4].val(), "4");
-    root["b"]["seq"].append_sibling({NodeScalar{"!!str", "aaa"}, NodeScalar{"!!int", "0"}});
-    EXPECT_EQ((type_bits)root["b"]["seq"][4].type(), (type_bits)VAL);
-    EXPECT_EQ(root["b"]["seq"][4].val(), "4");
-
-    root["b"]["key"] = "val";
-    auto seq = root["b"]["seq"];
-    auto seq2 = root["b"]["seq2"];
-    EXPECT_TRUE(seq2.is_seed());
-    root["b"]["seq2"] = N(SEQ);
-    seq2 = root["b"]["seq2"];
-    EXPECT_FALSE(seq2.is_seed());
-    EXPECT_TRUE(seq2.is_seq());
-    EXPECT_EQ(seq2.num_children(), 0);
-    EXPECT_EQ(root["b"]["seq2"].get(), seq2.get());
-    auto seq20 = seq2[0];
-    EXPECT_TRUE(seq20.is_seed());
-    EXPECT_TRUE(seq2[0].is_seed());
-    EXPECT_EQ(seq2.num_children(), 0);
-    EXPECT_TRUE(seq2[0].is_seed());
-    EXPECT_TRUE(seq20.is_seed());
-    EXPECT_NE(seq.get(), seq2.get());
-    seq20 = root["b"]["seq2"][0];
-    EXPECT_TRUE(seq20.is_seed());
-    root["b"]["seq2"][0] = "00";
-    seq20 = root["b"]["seq2"][0];
-    EXPECT_FALSE(seq20.is_seed());
-    NodeRef before = root["b"]["key"];
-    EXPECT_EQ(before.key(), "key");
-    EXPECT_EQ(before.val(), "val");
-    root["b"]["seq2"][1] = "01";
-    NodeRef after = root["b"]["key"];
-    EXPECT_EQ(before.key(), "key");
-    EXPECT_EQ(before.val(), "val");
-    EXPECT_EQ(after.key(), "key");
-    EXPECT_EQ(after.val(), "val");
-    root["b"]["seq2"][2] = "02";
-    root["b"]["seq2"][3] = "03";
-    int iv = 0;
-    root["b"]["seq2"][4] << 55; root["b"]["seq2"][4] >> iv;
-    EXPECT_EQ(iv, 55);
-    size_t zv = 0;
-    root["b"]["seq2"][5] << size_t(55); root["b"]["seq2"][5] >> zv;
-    EXPECT_EQ(zv, size_t(55));
-    float fv = 0;
-    root["b"]["seq2"][6] << 2.0f; root["b"]["seq2"][6] >> fv;
-    EXPECT_EQ(fv, 2.f);
-    float dv = 0;
-    root["b"]["seq2"][7] << 2.0; root["b"]["seq2"][7] >> dv;
-    EXPECT_EQ(dv, 2.0);
-
-    EXPECT_EQ(root["b"]["key"].key(), "key");
-    EXPECT_EQ(root["b"]["key"].val(), "val");
-
-
-    emit_yaml(t);
-
-    EXPECT_TRUE(root.type().is_map());
-    EXPECT_TRUE(root["a"].type().is_keyval());
-    EXPECT_EQ(root["a"].key(), "a");
-    EXPECT_EQ(root["a"].val(), "0");
-
-    EXPECT_TRUE(root["b"].type().has_key());
-    EXPECT_TRUE(root["b"].type().is_map());
-
-    EXPECT_TRUE(root["b"]["seq"].type().has_key());
-    EXPECT_TRUE(root["b"]["seq"].type().is_seq());
-    EXPECT_EQ  (root["b"]["seq"].key(), "seq");
-    EXPECT_TRUE(root["b"]["seq"][0].type().is_val());
-    EXPECT_EQ(  root["b"]["seq"][0].val(), "0");
-    EXPECT_TRUE(root["b"]["seq"][1].type().is_val());
-    EXPECT_EQ(  root["b"]["seq"][1].val(), "1");
-    EXPECT_TRUE(root["b"]["seq"][2].type().is_val());
-    EXPECT_EQ(  root["b"]["seq"][2].val(), "2");
-    EXPECT_TRUE(root["b"]["seq"][3].type().is_val());
-    EXPECT_EQ(  root["b"]["seq"][3].val(), "3");
-    EXPECT_EQ(  root["b"]["seq"][3].val_tag(), "!!str");
-    EXPECT_TRUE(root["b"]["seq"][4].type().is_val());
-    EXPECT_EQ(  root["b"]["seq"][4].val(), "4");
-
-    int tv;
-    EXPECT_EQ(root["b"]["key"].key(), "key");
-    EXPECT_EQ(root["b"]["key"].val(), "val");
-    EXPECT_EQ(root["b"]["seq2"][0].val(), "00"); root["b"]["seq2"][0] >> tv; EXPECT_EQ(tv, 0);
-    EXPECT_EQ(root["b"]["seq2"][1].val(), "01"); root["b"]["seq2"][1] >> tv; EXPECT_EQ(tv, 1);
-    EXPECT_EQ(root["b"]["seq2"][2].val(), "02"); root["b"]["seq2"][2] >> tv; EXPECT_EQ(tv, 2);
-    EXPECT_EQ(root["b"]["seq2"][3].val(), "03"); root["b"]["seq2"][3] >> tv; EXPECT_EQ(tv, 3);
-    EXPECT_EQ(root["b"]["seq2"][4].val(), "55"); EXPECT_EQ(iv, 55);
-    EXPECT_EQ(root["b"]["seq2"][5].val(), "55"); EXPECT_EQ(zv, size_t(55));
-    EXPECT_EQ(root["b"]["seq2"][6].val(), "2"); EXPECT_EQ(fv, 2.f);
-    EXPECT_EQ(root["b"]["seq2"][6].val(), "2"); EXPECT_EQ(dv, 2.);
-
-    root["b"]["seq"][2].set_val_serialized(22);
-
-    emit_yaml(t);
-
-    EXPECT_TRUE(root["b"]["aaa"].type().is_keyval());
-    EXPECT_EQ(root["b"]["aaa"].key_tag(), "!!str");
-    EXPECT_EQ(root["b"]["aaa"].key(), "aaa");
-    EXPECT_EQ(root["b"]["aaa"].val_tag(), "!!int");
-    EXPECT_EQ(root["b"]["aaa"].val(), "0");
-}
-
-
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-//-----------------------------------------------------------------------------
-
-void noderef_check_tree(ConstNodeRef const& root)
-{
-    test_invariants(*root.tree());
-
-    EXPECT_EQ(root.tree()->size(), 7u);
-    EXPECT_EQ(root.num_children(), 6u);
-    EXPECT_EQ(root.is_container(), true);
-    EXPECT_EQ(root.is_seq(), true);
-
-    EXPECT_TRUE(root[0].type().is_val());
-    EXPECT_EQ(  root[0].val(), "0");
-    EXPECT_TRUE(root[1].type().is_val());
-    EXPECT_EQ(  root[1].val(), "1");
-    EXPECT_TRUE(root[2].type().is_val());
-    EXPECT_EQ(  root[2].val(), "2");
-    EXPECT_TRUE(root[3].type().is_val());
-    EXPECT_EQ(  root[3].val(), "3");
-    EXPECT_TRUE(root[4].type().is_val());
-    EXPECT_EQ(  root[4].val(), "4");
-    EXPECT_TRUE(root[5].type().is_val());
-    EXPECT_EQ(  root[5].val(), "5");
-}
-
-TEST(NodeRef, append_child)
-{
-    Tree t;
-
-    NodeRef root(&t);
-
-    root |= SEQ;
-    root.append_child({"0"});
-    root.append_child({"1"});
-    root.append_child({"2"});
-    root.append_child({"3"});
-    root.append_child({"4"});
-    root.append_child({"5"});
-
-    noderef_check_tree(root);
-}
-
-TEST(NodeRef, prepend_child)
-{
-    Tree t;
-
-    NodeRef root(&t);
-
-    root |= SEQ;
-    root.prepend_child({"5"});
-    root.prepend_child({"4"});
-    root.prepend_child({"3"});
-    root.prepend_child({"2"});
-    root.prepend_child({"1"});
-    root.prepend_child({"0"});
-
-    noderef_check_tree(root);
-}
-
-TEST(NodeRef, insert_child)
-{
-    Tree t;
-
-    NodeRef root(&t);
-    NodeRef none(&t, NONE);
-
-    root |= SEQ;
-    root.insert_child({"3"}, none);
-    root.insert_child({"4"}, root[0]);
-    root.insert_child({"0"}, none);
-    root.insert_child({"5"}, root[2]);
-    root.insert_child({"1"}, root[0]);
-    root.insert_child({"2"}, root[1]);
-
-    noderef_check_tree(root);
-}
-
-TEST(NodeRef, remove_child)
-{
-    Tree t;
-
-    NodeRef root(&t);
-    NodeRef none(&t, NONE);
-
-    root |= SEQ;
-    root.insert_child({"3"}, none);
-    root.insert_child({"4"}, root[0]);
-    root.insert_child({"0"}, none);
-    root.insert_child({"5"}, root[2]);
-    root.insert_child({"1"}, root[0]);
-    root.insert_child({"2"}, root[1]);
-
-    std::vector<int> vec({10, 20, 30, 40, 50, 60, 70, 80, 90});
-    root.insert_child(root[0]) << vec; // 1
-    root.insert_child(root[2]) << vec; // 3
-    root.insert_child(root[4]) << vec; // 5
-    root.insert_child(root[6]) << vec; // 7
-    root.insert_child(root[8]) << vec; // 9
-    root.append_child() << vec;        // 10
-
-    root.remove_child(11);
-    root.remove_child(9);
-    root.remove_child(7);
-    root.remove_child(5);
-    root.remove_child(3);
-    root.remove_child(1);
-
-    noderef_check_tree(root);
-
-    std::vector<std::vector<int>> vec2({{100, 200}, {300, 400}, {500, 600}, {700, 800, 900}});
-    root.prepend_child() << vec2; // 0
-    root.insert_child(root[1]) << vec2; // 2
-    root.insert_child(root[3]) << vec2; // 4
-    root.insert_child(root[5]) << vec2; // 6
-    root.insert_child(root[7]) << vec2; // 8
-    root.insert_child(root[9]) << vec2; // 10
-    root.append_child() << vec2;        // 12
-
-    root.remove_child(12);
-    root.remove_child(10);
-    root.remove_child(8);
-    root.remove_child(6);
-    root.remove_child(4);
-    root.remove_child(2);
-    root.remove_child(0);
-
-    noderef_check_tree(root);
-}
-
-TEST(NodeRef, move_in_same_parent)
-{
-    Tree t;
-    NodeRef r = t;
-
-    std::vector<std::vector<int>> vec2({{100, 200}, {300, 400}, {500, 600}, {700, 800, 900}});
-    std::map<std::string, int> map2({{"foo", 100}, {"bar", 200}, {"baz", 300}});
-
-    r |= SEQ;
-    r.append_child() << vec2;
-    r.append_child() << map2;
-    r.append_child() << "elm2";
-    r.append_child() << "elm3";
-
-    auto s = r[0];
-    auto m = r[1];
-    EXPECT_TRUE(s.is_seq());
-    EXPECT_TRUE(m.is_map());
-    EXPECT_EQ(s.num_children(), vec2.size());
-    EXPECT_EQ(m.num_children(), map2.size());
-    //printf("fonix"); print_tree(t); emit_yaml(r);
-    r[0].move(r[1]);
-    //printf("fonix"); print_tree(t); emit_yaml(r);
-    EXPECT_EQ(r[0].get(), m.get());
-    EXPECT_EQ(r[0].num_children(), map2.size());
-    EXPECT_EQ(r[1].get(), s.get());
-    EXPECT_EQ(r[1].num_children(), vec2.size());
-    test_invariants(t);
-}
-
-TEST(NodeRef, move_in_same_parent_to_first_position)
-{
-    Tree t = parse_in_arena("[1, 2, 3, 0, 4]");
-    NodeRef r = t;
-
-    EXPECT_TRUE(r[0].val() == "1");
-    EXPECT_TRUE(r[1].val() == "2");
-    EXPECT_TRUE(r[2].val() == "3");
-    EXPECT_TRUE(r[3].val() == "0");
-    EXPECT_TRUE(r[4].val() == "4");
-    r[3].move({});
-    EXPECT_TRUE(r[0].val() == "0");
-    EXPECT_TRUE(r[1].val() == "1");
-    EXPECT_TRUE(r[2].val() == "2");
-    EXPECT_TRUE(r[3].val() == "3");
-    EXPECT_TRUE(r[4].val() == "4");
-    test_invariants(t);
-    r[0].move({}); // should have no effect
-    EXPECT_TRUE(r[0].val() == "0");
-    EXPECT_TRUE(r[1].val() == "1");
-    EXPECT_TRUE(r[2].val() == "2");
-    EXPECT_TRUE(r[3].val() == "3");
-    EXPECT_TRUE(r[4].val() == "4");
-    test_invariants(t);
-    r[4].move({});
-    EXPECT_TRUE(r[0].val() == "4");
-    EXPECT_TRUE(r[1].val() == "0");
-    EXPECT_TRUE(r[2].val() == "1");
-    EXPECT_TRUE(r[3].val() == "2");
-    EXPECT_TRUE(r[4].val() == "3");
-    test_invariants(t);
-}
-
-TEST(NodeRef, move_to_other_parent)
-{
-    Tree t;
-    NodeRef r = t;
-
-    std::vector<std::vector<int>> vec2({{100, 200}, {300, 400}, {500, 600}, {700, 800, 900}});
-    std::map<std::string, int> map2({{"foo", 100}, {"bar", 200}, {"baz", 300}});
-
-    r |= SEQ;
-    r.append_child() << vec2;
-    r.append_child() << map2;
-    r.append_child() << "elm2";
-    r.append_child() << "elm3";
-
-    NodeData *elm2 = r[2].get();
-    EXPECT_EQ(r[2].val(), "elm2");
-    //printf("fonix"); print_tree(t); emit_yaml(r);
-    r[2].move(r[0], r[0][0]);
-    EXPECT_EQ(r[0][1].get(), elm2);
-    EXPECT_EQ(r[0][1].val(), "elm2");
-    //printf("fonix"); print_tree(t); emit_yaml(r);
-    test_invariants(t);
-}
-
-TEST(NodeRef, move_to_other_parent_to_first_position)
-{
-    Tree t = parse_in_arena("[[0, 1, 2, 3, 4], [00, 10, 20, 30, 40]]");
-    NodeRef r = t;
-
-    EXPECT_TRUE(r[0][0].val() == "0");
-    EXPECT_TRUE(r[0][1].val() == "1");
-    EXPECT_TRUE(r[0][2].val() == "2");
-    EXPECT_TRUE(r[0][3].val() == "3");
-    EXPECT_TRUE(r[0][4].val() == "4");
-    EXPECT_TRUE(r[1][0].val() == "00");
-    EXPECT_TRUE(r[1][1].val() == "10");
-    EXPECT_TRUE(r[1][2].val() == "20");
-    EXPECT_TRUE(r[1][3].val() == "30");
-    EXPECT_TRUE(r[1][4].val() == "40");
-    test_invariants(t);
-    r[0][0].move(r[1], {});
-    EXPECT_TRUE(r[0][0].val() == "1");
-    EXPECT_TRUE(r[0][1].val() == "2");
-    EXPECT_TRUE(r[0][2].val() == "3");
-    EXPECT_TRUE(r[0][3].val() == "4");
-    EXPECT_TRUE(r[1][0].val() == "0");
-    EXPECT_TRUE(r[1][1].val() == "00");
-    EXPECT_TRUE(r[1][2].val() == "10");
-    EXPECT_TRUE(r[1][3].val() == "20");
-    EXPECT_TRUE(r[1][4].val() == "30");
-    EXPECT_TRUE(r[1][5].val() == "40");
-    test_invariants(t);
-    r[1][0].move(r[0], {});
-    EXPECT_TRUE(r[0][0].val() == "0");
-    EXPECT_TRUE(r[0][1].val() == "1");
-    EXPECT_TRUE(r[0][2].val() == "2");
-    EXPECT_TRUE(r[0][3].val() == "3");
-    EXPECT_TRUE(r[0][4].val() == "4");
-    EXPECT_TRUE(r[1][0].val() == "00");
-    EXPECT_TRUE(r[1][1].val() == "10");
-    EXPECT_TRUE(r[1][2].val() == "20");
-    EXPECT_TRUE(r[1][3].val() == "30");
-    EXPECT_TRUE(r[1][4].val() == "40");
-    test_invariants(t);
-}
-
-TEST(NodeRef, move_to_other_tree)
-{
-    Tree t0 = parse_in_arena("[0, 1, 2, 3, 4]");
-    Tree t1 = parse_in_arena("[00, 10, 20, 30, 40]");
-    NodeRef r0 = t0;
-    NodeRef r1 = t1;
-
-    EXPECT_TRUE(r0[0].val() == "0");
-    EXPECT_TRUE(r0[1].val() == "1");
-    EXPECT_TRUE(r0[2].val() == "2");
-    EXPECT_TRUE(r0[3].val() == "3");
-    EXPECT_TRUE(r0[4].val() == "4");
-    EXPECT_TRUE(r1[0].val() == "00");
-    EXPECT_TRUE(r1[1].val() == "10");
-    EXPECT_TRUE(r1[2].val() == "20");
-    EXPECT_TRUE(r1[3].val() == "30");
-    EXPECT_TRUE(r1[4].val() == "40");
-    r0[0].move(r1, r1[0]);
-    test_invariants(t0);
-    test_invariants(t1);
-    EXPECT_TRUE(r0[0].val() == "1");
-    EXPECT_TRUE(r0[1].val() == "2");
-    EXPECT_TRUE(r0[2].val() == "3");
-    EXPECT_TRUE(r0[3].val() == "4");
-    EXPECT_TRUE(r1[0].val() == "00");
-    EXPECT_TRUE(r1[1].val() == "0");
-    EXPECT_TRUE(r1[2].val() == "10");
-    EXPECT_TRUE(r1[3].val() == "20");
-    EXPECT_TRUE(r1[4].val() == "30");
-    EXPECT_TRUE(r1[5].val() == "40");
-    test_invariants(t0);
-    test_invariants(t1);
-    r1[1].move(r0, r0[0]);
-    EXPECT_TRUE(r0[0].val() == "1");
-    EXPECT_TRUE(r0[1].val() == "0");
-    EXPECT_TRUE(r0[2].val() == "2");
-    EXPECT_TRUE(r0[3].val() == "3");
-    EXPECT_TRUE(r0[4].val() == "4");
-    EXPECT_TRUE(r1[0].val() == "00");
-    EXPECT_TRUE(r1[1].val() == "10");
-    EXPECT_TRUE(r1[2].val() == "20");
-    EXPECT_TRUE(r1[3].val() == "30");
-    EXPECT_TRUE(r1[4].val() == "40");
-    test_invariants(t0);
-    test_invariants(t1);
-}
-
-TEST(NodeRef, move_to_other_tree_to_first_position)
-{
-    Tree t0 = parse_in_arena("[0, 1, 2, 3, 4]");
-    Tree t1 = parse_in_arena("[00, 10, 20, 30, 40]");
-    NodeRef r0 = t0;
-    NodeRef r1 = t1;
-
-    EXPECT_TRUE(r0[0].val() == "0");
-    EXPECT_TRUE(r0[1].val() == "1");
-    EXPECT_TRUE(r0[2].val() == "2");
-    EXPECT_TRUE(r0[3].val() == "3");
-    EXPECT_TRUE(r0[4].val() == "4");
-    EXPECT_TRUE(r1[0].val() == "00");
-    EXPECT_TRUE(r1[1].val() == "10");
-    EXPECT_TRUE(r1[2].val() == "20");
-    EXPECT_TRUE(r1[3].val() == "30");
-    EXPECT_TRUE(r1[4].val() == "40");
-    test_invariants(t0);
-    test_invariants(t1);
-    r0[0].move(r1, {});
-    EXPECT_TRUE(r0[0].val() == "1");
-    EXPECT_TRUE(r0[1].val() == "2");
-    EXPECT_TRUE(r0[2].val() == "3");
-    EXPECT_TRUE(r0[3].val() == "4");
-    EXPECT_TRUE(r1[0].val() == "0");
-    EXPECT_TRUE(r1[1].val() == "00");
-    EXPECT_TRUE(r1[2].val() == "10");
-    EXPECT_TRUE(r1[3].val() == "20");
-    EXPECT_TRUE(r1[4].val() == "30");
-    EXPECT_TRUE(r1[5].val() == "40");
-    test_invariants(t0);
-    test_invariants(t1);
-    r1[0].move(r0, {});
-    EXPECT_TRUE(r0[0].val() == "0");
-    EXPECT_TRUE(r0[1].val() == "1");
-    EXPECT_TRUE(r0[2].val() == "2");
-    EXPECT_TRUE(r0[3].val() == "3");
-    EXPECT_TRUE(r0[4].val() == "4");
-    EXPECT_TRUE(r1[0].val() == "00");
-    EXPECT_TRUE(r1[1].val() == "10");
-    EXPECT_TRUE(r1[2].val() == "20");
-    EXPECT_TRUE(r1[3].val() == "30");
-    EXPECT_TRUE(r1[4].val() == "40");
-    test_invariants(t0);
-    test_invariants(t1);
-}
-
-TEST(NodeRef, duplicate_to_same_tree)
-{
-    Tree t = parse_in_arena("[{a0: [b0, c0], a1: [b1, c1], a2: [b2, c2], a3: [b3, c3]}]");
-    auto checkseq = [](ConstNodeRef const& s){
-        ASSERT_EQ(s.num_children(), 4u);
-        ASSERT_EQ(s[0].num_children(), 2u);
-        ASSERT_EQ(s[1].num_children(), 2u);
-        ASSERT_EQ(s[2].num_children(), 2u);
-        ASSERT_EQ(s[3].num_children(), 2u);
-        EXPECT_EQ(s[0].key(), "a0");
-        EXPECT_EQ(s[0][0].val(), "b0");
-        EXPECT_EQ(s[0][1].val(), "c0");
-        EXPECT_EQ(s[1].key(), "a1");
-        EXPECT_EQ(s[1][0].val(), "b1");
-        EXPECT_EQ(s[1][1].val(), "c1");
-        EXPECT_EQ(s[2].key(), "a2");
-        EXPECT_EQ(s[2][0].val(), "b2");
-        EXPECT_EQ(s[2][1].val(), "c2");
-        EXPECT_EQ(s[3].key(), "a3");
-        EXPECT_EQ(s[3][0].val(), "b3");
-        EXPECT_EQ(s[3][1].val(), "c3");
-    };
-    {
-        SCOPED_TRACE("at the beginning");
-        t[0].duplicate({});
-        test_check_emit_check(t, [&checkseq](ConstNodeRef r){
-            checkseq(r[0]);
-            checkseq(r[1]);
-        });
-    }
-    {
-        SCOPED_TRACE("at the end");
-        t[0].duplicate(t.rootref().last_child());
-        test_check_emit_check(t, [&checkseq](ConstNodeRef r){
-            checkseq(r[0]);
-            checkseq(r[1]);
-            checkseq(r[2]);
-        });
-    }
-    {
-        SCOPED_TRACE("in the middle");
-        t[0].duplicate(t.rootref().first_child());
-        test_check_emit_check(t, [&checkseq](ConstNodeRef r){
-            checkseq(r[0]);
-            checkseq(r[1]);
-            checkseq(r[2]);
-        });
-    }
-}
-
-TEST(NodeRef, duplicate_to_different_tree)
-{
-    Tree t = parse_in_arena("[{a0: [b0, c0], a1: [b1, c1], a2: [b2, c2], a3: [b3, c3]}]");
-    auto checkseq = [](ConstNodeRef const& s){
-        ASSERT_EQ(s.num_children(), 4u);
-        ASSERT_EQ(s[0].num_children(), 2u);
-        ASSERT_EQ(s[1].num_children(), 2u);
-        ASSERT_EQ(s[2].num_children(), 2u);
-        ASSERT_EQ(s[3].num_children(), 2u);
-        EXPECT_EQ(s[0].key(), "a0");
-        EXPECT_EQ(s[0][0].val(), "b0");
-        EXPECT_EQ(s[0][1].val(), "c0");
-        EXPECT_EQ(s[1].key(), "a1");
-        EXPECT_EQ(s[1][0].val(), "b1");
-        EXPECT_EQ(s[1][1].val(), "c1");
-        EXPECT_EQ(s[2].key(), "a2");
-        EXPECT_EQ(s[2][0].val(), "b2");
-        EXPECT_EQ(s[2][1].val(), "c2");
-        EXPECT_EQ(s[3].key(), "a3");
-        EXPECT_EQ(s[3][0].val(), "b3");
-        EXPECT_EQ(s[3][1].val(), "c3");
-    };
-    auto check_orig = [&checkseq](ConstNodeRef const& r){
-        ASSERT_TRUE(r.is_seq());
-        ASSERT_GE(r.num_children(), 1u);
-        checkseq(r[0]);
-    };
-    Tree d = parse_in_arena("[]");
-    {
-        SCOPED_TRACE("at the beginning");
-        t[0].duplicate(d, {});
-        test_check_emit_check(t, check_orig);
-        test_check_emit_check(d, check_orig);
-    }
-    {
-        SCOPED_TRACE("at the end");
-        t[0].duplicate(d, d.rootref().last_child());
-        test_check_emit_check(t, check_orig);
-        test_check_emit_check(d, check_orig);
-        test_check_emit_check(d, [&checkseq](ConstNodeRef r){
-            checkseq(r[1]);
-        });
-    }
-    {
-        SCOPED_TRACE("in the middle");
-        t[0].duplicate(d, d.rootref().first_child());
-        test_check_emit_check(t, check_orig);
-        test_check_emit_check(d, check_orig);
-        test_check_emit_check(d, [&checkseq](ConstNodeRef r){
-            checkseq(r[1]);
-            checkseq(r[2]);
-        });
-    }
-}
-
-TEST(NodeRef, intseq)
-{
-    Tree t = parse_in_arena("iseq: [8, 10]");
-    NodeRef n = t["iseq"];
-    int a, b;
-    n[0] >> a;
-    n[1] >> b;
-    EXPECT_EQ(a, 8);
-    EXPECT_EQ(b, 10);
-    test_invariants(t);
-}
-
-TEST(NodeRef, vsConstNodeRef)
-{
-    Tree t = parse_in_arena("iseq: [8, 10]");
-    Tree const& ct = t;
-    NodeRef mseq = t["iseq"];
-    ConstNodeRef seq = t["iseq"];
-    EXPECT_EQ(mseq.tree(), seq.tree());
-    EXPECT_EQ(mseq.id(), seq.id());
-    EXPECT_TRUE(mseq == seq);
-    EXPECT_FALSE(mseq != seq);
-    EXPECT_TRUE(seq == mseq);
-    EXPECT_FALSE(seq != mseq);
-    // mseq = ct["iseq"]; // deliberate compile error
-    seq = ct["iseq"]; // ok
-    // mseq = seq; // deliberate compilation error
-    seq = mseq; // ok
-    {
-        NodeData *nd = mseq.get();
-        // nd = seq.get(); // deliberate compile error
-        C4_UNUSED(nd);
-    }
-    {
-        NodeData const* nd = seq.get();
-        nd = seq.get(); // ok
-        C4_UNUSED(nd);
-    }
-    test_invariants(t);
-}
-
-
-// see https://github.com/biojppm/rapidyaml/issues/294
-TEST(NodeRef, overload_sets)
-{
-    // doc()
-    {
-        Tree t = parse_in_arena("a\n---\nb");
-        NodeRef n = t;
-        NodeRef const nc = t;
-        ConstNodeRef const cn = t;
-        EXPECT_EQ(n.doc(0), nc.doc(0));
-        EXPECT_EQ(n.doc(0), cn.doc(0));
-    }
-    Tree t = parse_in_arena("{iseq: [8, 10], imap: {a: b, c: d}}");
-    NodeRef n = t;
-    NodeRef const nc = t;
-    ConstNodeRef const cn = t;
-    // get()
-    {
-        EXPECT_EQ(n["iseq"].get(), nc["iseq"].get());
-        EXPECT_EQ(n["iseq"].get(), cn["iseq"].get());
-    }
-    // parent()
-    {
-        EXPECT_EQ(n["iseq"].parent(), nc["iseq"].parent());
-        EXPECT_EQ(n["iseq"].parent(), cn["iseq"].parent());
-    }
-    // child_pos()
-    {
-        EXPECT_EQ(n["iseq"].child_pos(n["iseq"][0]), nc["iseq"].child_pos(n["iseq"][0]));
-        EXPECT_EQ(n["iseq"].child_pos(n["iseq"][0]), cn["iseq"].child_pos(n["iseq"][0]));
-    }
-    // num_children()
-    {
-        EXPECT_EQ(n["iseq"].num_children(), nc["iseq"].num_children());
-        EXPECT_EQ(n["iseq"].num_children(), cn["iseq"].num_children());
-    }
-    // first_child()
-    {
-        EXPECT_EQ(n["iseq"].first_child(), nc["iseq"].first_child());
-        EXPECT_EQ(n["iseq"].first_child(), cn["iseq"].first_child());
-    }
-    // last_child()
-    {
-        EXPECT_EQ(n["iseq"].last_child(), nc["iseq"].last_child());
-        EXPECT_EQ(n["iseq"].last_child(), cn["iseq"].last_child());
-    }
-    // child()
-    {
-        EXPECT_EQ(n["iseq"].child(0), nc["iseq"].child(0));
-        EXPECT_EQ(n["iseq"].child(0), cn["iseq"].child(0));
-    }
-    // find_child()
-    {
-        EXPECT_EQ(n.find_child("iseq"), nc.find_child("iseq"));
-        EXPECT_EQ(n.find_child("iseq"), cn.find_child("iseq"));
-    }
-    // prev_sibling()
-    {
-        EXPECT_EQ(n["iseq"][1].prev_sibling(), nc["iseq"][1].prev_sibling());
-        EXPECT_EQ(n["iseq"][1].prev_sibling(), cn["iseq"][1].prev_sibling());
-    }
-    // next_sibling()
-    {
-        EXPECT_EQ(n["iseq"][0].next_sibling(), nc["iseq"][0].next_sibling());
-        EXPECT_EQ(n["iseq"][0].next_sibling(), cn["iseq"][0].next_sibling());
-    }
-    // first_sibling()
-    {
-        EXPECT_EQ(n["iseq"][1].first_sibling(), nc["iseq"][1].first_sibling());
-        EXPECT_EQ(n["iseq"][1].first_sibling(), cn["iseq"][1].first_sibling());
-    }
-    // last_sibling()
-    {
-        EXPECT_EQ(n["iseq"][0].last_sibling(), nc["iseq"][0].last_sibling());
-        EXPECT_EQ(n["iseq"][0].last_sibling(), cn["iseq"][0].last_sibling());
-    }
-    // sibling()
-    {
-        EXPECT_EQ(n["iseq"][1].sibling(0), nc["iseq"][1].sibling(0));
-        EXPECT_EQ(n["iseq"][1].sibling(0), cn["iseq"][1].sibling(0));
-    }
-    // find_sibling()
-    {
-        EXPECT_EQ(n["iseq"].find_sibling("imap"), nc["iseq"].find_sibling("imap"));
-        EXPECT_EQ(n["iseq"].find_sibling("imap"), cn["iseq"].find_sibling("imap"));
-    }
-    // operator[](csubstr)
-    {
-        EXPECT_EQ(n["iseq"].id(), nc["iseq"].id());
-        EXPECT_EQ(n["iseq"].id(), cn["iseq"].id());
-    }
-    // operator[](size_t)
-    {
-        EXPECT_EQ(n["iseq"][0].id(), nc["iseq"][0].id());
-        EXPECT_EQ(n["iseq"][0].id(), cn["iseq"][0].id());
-    }
-    // begin()
-    {
-        EXPECT_EQ(n["iseq"].begin().m_child_id, nc["iseq"].begin().m_child_id);
-        EXPECT_EQ(n["iseq"].begin().m_child_id, cn["iseq"].begin().m_child_id);
-    }
-    // end()
-    {
-        EXPECT_EQ(n["iseq"].end().m_child_id, nc["iseq"].end().m_child_id);
-        EXPECT_EQ(n["iseq"].end().m_child_id, cn["iseq"].end().m_child_id);
-    }
-    // cbegin()
-    {
-        EXPECT_EQ(n["iseq"].cbegin().m_child_id, nc["iseq"].cbegin().m_child_id);
-        EXPECT_EQ(n["iseq"].cbegin().m_child_id, cn["iseq"].cbegin().m_child_id);
-    }
-    // cend()
-    {
-        EXPECT_EQ(n["iseq"].cend().m_child_id, nc["iseq"].cend().m_child_id);
-        EXPECT_EQ(n["iseq"].cend().m_child_id, cn["iseq"].cend().m_child_id);
-    }
-    // children()
-    {
-        EXPECT_EQ(n["iseq"].children().b.m_child_id, nc["iseq"].children().b.m_child_id);
-        EXPECT_EQ(n["iseq"].children().b.m_child_id, cn["iseq"].children().b.m_child_id);
-    }
-    // cchildren()
-    {
-        EXPECT_EQ(n["iseq"].cchildren().b.m_child_id, nc["iseq"].cchildren().b.m_child_id);
-        EXPECT_EQ(n["iseq"].cchildren().b.m_child_id, cn["iseq"].cchildren().b.m_child_id);
-    }
-    // siblings()
-    {
-        EXPECT_EQ(n["iseq"][0].siblings().b.m_child_id, nc["iseq"][0].siblings().b.m_child_id);
-        EXPECT_EQ(n["iseq"][0].siblings().b.m_child_id, cn["iseq"][0].siblings().b.m_child_id);
-        EXPECT_EQ(n.siblings().b.m_child_id, nc.siblings().b.m_child_id);
-        EXPECT_EQ(n.siblings().b.m_child_id, cn.siblings().b.m_child_id);
-    }
-    // csiblings()
-    {
-        EXPECT_EQ(n["iseq"][0].csiblings().b.m_child_id, nc["iseq"][0].csiblings().b.m_child_id);
-        EXPECT_EQ(n["iseq"][0].csiblings().b.m_child_id, cn["iseq"][0].csiblings().b.m_child_id);
-        EXPECT_EQ(n.csiblings().b.m_child_id, nc.csiblings().b.m_child_id);
-        EXPECT_EQ(n.csiblings().b.m_child_id, cn.csiblings().b.m_child_id);
-    }
-}
-
-
-//-------------------------------------------
-// this is needed to use the test case library
-Case const* get_case(csubstr /*name*/)
-{
-    return nullptr;
-}
-
-} // namespace yml
-} // namespace c4
-
-#if defined(_MSC_VER)
-#   pragma warning(pop)
-#elif defined(__clang__)
-#   pragma clang diagnostic pop
-#elif defined(__GNUC__)
-#   pragma GCC diagnostic pop
-#endif