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Diffstat (limited to 'yaml-cpp/util/api.cpp')
-rwxr-xr-x | yaml-cpp/util/api.cpp | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/yaml-cpp/util/api.cpp b/yaml-cpp/util/api.cpp deleted file mode 100755 index e5180a8a..00000000 --- a/yaml-cpp/util/api.cpp +++ /dev/null @@ -1,129 +0,0 @@ -// a sketch of what the new API might look like - -#include "yaml-cpp/yaml.h" -#include <iostream> - -int main() -{ - { - // test.yaml - // - foo - // - primes: [2, 3, 5, 7, 11] - // odds: [1, 3, 5, 7, 9, 11] - // - [x, y] - - // move-like semantics - YAML::Value root = YAML::Parse("test.yaml"); - - std::cout << root[0].as<std::string>(); // "foo" - std::cout << str(root[0]); // "foo", shorthand? - std::cout << root[1]["primes"][3].as<int>(); // "7" - std::cout << root[1]["odds"][6].as<int>(); // throws? - - root[2].push_back(5); - root[3] = "Hello, World"; - root[0].reset(); - root[0]["key"] = "value"; - - std::cout << root; - // # not sure about formatting - // - {key: value} - // - primes: [2, 3, 5, 7, 11] - // odds: [1, 3, 5, 7, 9, 11] - // - [x, y, 5] - // - Hello, World - } - - { - // for all copy-like commands, think of python's "name/value" semantics - YAML::Value root = "Hello"; // Hello - root = YAML::Sequence(); // [] - root[0] = 0; // [0] - root[2] = "two"; // [0, ~, two] # forces root[1] to be initialized to null - - YAML::Value other = root; // both point to the same thing - other[0] = 5; // now root[0] is 0 also - other.push_back(root); // &1 [5, ~, two, *1] - other[3][0] = 0; // &1 [0, ~, two, *1] # since it's a true alias - other.push_back(Copy(root)); // &1 [0, ~, two, *1, &2 [0, ~, two, *2]] - other[4][0] = 5; // &1 [0, ~, two, *1, &2 [5, ~, two, *2]] # they're really different - } - - { - YAML::Value node; // ~ - node[0] = 1; // [1] # auto-construct a sequence - node["key"] = 5; // {0: 1, key: 5} # auto-turn it into a map - node.push_back(10); // error, can't turn a map into a sequence - node.erase("key"); // {0: 1} # still a map, even if we remove the key that caused the problem - node = "Hello"; // Hello # assignment overwrites everything, so it's now just a plain scalar - } - - { - YAML::Value map; // ~ - map[3] = 1; // {3: 1} # auto-constructs a map, *not* a sequence - - YAML::Value seq; // ~ - seq = YAML::Sequence(); // [] - seq[3] = 1; // [~, ~, ~, 1] - } - - { - YAML::Value node; // ~ - node[0] = node; // &1 [*1] # fun stuff - } - - { - YAML::Value node; - YAML::Value subnode = node["key"]; // 'subnode' is not instantiated ('node' is still null) - subnode = "value"; // {key: value} # now it is - YAML::Value subnode2 = node["key2"]; - node["key3"] = subnode2; // subnode2 is still not instantiated, but node["key3"] is "pseudo" aliased to it - subnode2 = "monkey"; // {key: value, key2: &1 monkey, key3: *1} # bam! it instantiates both - } - - { - YAML::Value seq = YAML::Sequence(); - seq[0] = "zero"; // [zero] - seq[1] = seq[0]; // [&1 zero, *1] - seq[0] = seq[1]; // [&1 zero, *1] # no-op (they both alias the same thing, so setting them equal is nothing) - Is(seq[0], seq[1]); // true - seq[1] = "one"; // [&1 one, *1] - UnAlias(seq[1]); // [one, one] - Is(seq[0], seq[1]); // false - } - - { - YAML::Value root; - root.push_back("zero"); - root.push_back("one"); - root.push_back("two"); - YAML::Value two = root[2]; - root = "scalar"; // 'two' is still "two", even though 'root' is "scalar" (the sequence effectively no longer exists) - - // Note: in all likelihood, the memory for nodes "zero" and "one" is still allocated. How can it go away? Weak pointers? - } - - { - YAML::Value root; // ~ - root[0] = root; // &1 [*1] - root[0] = 5; // [5] - } - - { - YAML::Value root; - YAML::Value key; - key["key"] = "value"; - root[key] = key; // &1 {key: value}: *1 - } - - { - YAML::Value root; - root[0] = "hi"; - root[1][0] = "bye"; - root[1][1] = root; // &1 [hi, [bye, *1]] # root - YAML::Value sub = root[1]; // &1 [bye, [hi, *1]] # sub - root = "gone"; // [bye, gone] # sub - } - - return 0; -} |