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implemented remove

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This commit is contained in:
Niels 2016-04-20 16:52:00 +02:00
parent fa03cf0c63
commit 397ada22d3
3 changed files with 97 additions and 4 deletions
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26
src/json.hpp
View file

@ -8969,6 +8969,18 @@ basic_json_parser_63:
: reference_tokens(split(s))
{}
std::string pop_back()
{
if (reference_tokens.empty())
{
throw std::domain_error("JSON pointer has no parent");
}
auto last = reference_tokens.back();
reference_tokens.pop_back();
return last;
}
private:
/*!
@brief create and return a reference to the pointed to value
@ -9420,7 +9432,7 @@ basic_json_parser_63:
private:
/// the reference tokens
const std::vector<std::string> reference_tokens {};
std::vector<std::string> reference_tokens {};
};
////////////////////////////
@ -9539,7 +9551,7 @@ basic_json_parser_63:
const std::string op = it_op->second;
const std::string path = it_path->second;
const json_pointer ptr(path);
json_pointer ptr(path);
if (op == "add")
{
@ -9552,6 +9564,16 @@ basic_json_parser_63:
}
else if (op == "remove")
{
const auto last_path = ptr.pop_back();
basic_json& parent = result.at(ptr);
if (parent.is_object())
{
parent.erase(parent.find(last_path));
}
else if (parent.is_array())
{
parent.erase(parent.begin() + std::stoi(last_path));
}
}
else if (op == "replace")
{

26
src/json.hpp.re2c
View file

@ -8279,6 +8279,18 @@ class basic_json
: reference_tokens(split(s))
{}
std::string pop_back()
{
if (reference_tokens.empty())
{
throw std::domain_error("JSON pointer has no parent");
}
auto last = reference_tokens.back();
reference_tokens.pop_back();
return last;
}
private:
/*!
@brief create and return a reference to the pointed to value
@ -8730,7 +8742,7 @@ class basic_json
private:
/// the reference tokens
const std::vector<std::string> reference_tokens {};
std::vector<std::string> reference_tokens {};
};
////////////////////////////
@ -8849,7 +8861,7 @@ class basic_json
const std::string op = it_op->second;
const std::string path = it_path->second;
const json_pointer ptr(path);
json_pointer ptr(path);
if (op == "add")
{
@ -8862,6 +8874,16 @@ class basic_json
}
else if (op == "remove")
{
const auto last_path = ptr.pop_back();
basic_json& parent = result.at(ptr);
if (parent.is_object())
{
parent.erase(parent.find(last_path));
}
else if (parent.is_array())
{
parent.erase(parent.begin() + std::stoi(last_path));
}
}
else if (op == "replace")
{

49
test/unit.cpp
View file

@ -12421,6 +12421,55 @@ TEST_CASE("JSON patch")
CHECK(doc.apply_patch(patch) == expected);
}
SECTION("example A.3 - Removing an Object Member")
{
// An example target JSON document:
json doc = R"(
{
"baz": "qux",
"foo": "bar"
}
)"_json;
// A JSON Patch document:
json patch = R"(
[
{ "op": "remove", "path": "/baz" }
]
)"_json;
// The resulting JSON document:
json expected = R"(
{ "foo": "bar" }
)"_json;
// check if patched value is as expected
CHECK(doc.apply_patch(patch) == expected);
}
SECTION("example A.4 - Removing an Array Element")
{
// An example target JSON document:
json doc = R"(
{ "foo": [ "bar", "qux", "baz" ] }
)"_json;
// A JSON Patch document:
json patch = R"(
[
{ "op": "remove", "path": "/foo/1" }
]
)"_json;
// The resulting JSON document:
json expected = R"(
{ "foo": [ "bar", "baz" ] }
)"_json;
// check if patched value is as expected
CHECK(doc.apply_patch(patch) == expected);
}
SECTION("example A.5 - Replacing a Value")
{
// An example target JSON document: