Add json support to wpiutil.

This is a modified version of https://github.com/nlohmann/json. It's been moved into the wpi namespace as many of the changes are not compatible. The amount of template code has been significantly reduced, enabling many functions to be moved out-of-line, and for the result to build on older compiler versions (in particular GCC 4.8).
2026-06-21 01:01:43 +00:00 · 2017-06-15 13:22:55 -07:00
parent de9dd1180b
commit 301442ee43
35 changed files with 28635 additions and 2 deletions
--- a/src/test/native/cpp/json/unit-convenience.cpp
+++ b/src/test/native/cpp/json/unit-convenience.cpp
@@ -0,0 +1,121 @@
+/*----------------------------------------------------------------------------*/
+/* Modifications Copyright (c) FIRST 2017. All Rights Reserved.               */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+/*
+    __ _____ _____ _____
+ __|  |   __|     |   | |  JSON for Modern C++ (test suite)
+|  |  |__   |  |  | | | |  version 2.1.1
+|_____|_____|_____|_|___|  https://github.com/nlohmann/json
+
+Licensed under the MIT License <http://opensource.org/licenses/MIT>.
+Copyright (c) 2013-2017 Niels Lohmann <http://nlohmann.me>.
+
+Permission is hereby  granted, free of charge, to any  person obtaining a copy
+of this software and associated  documentation files (the "Software"), to deal
+in the Software  without restriction, including without  limitation the rights
+to  use, copy,  modify, merge,  publish, distribute,  sublicense, and/or  sell
+copies  of  the Software,  and  to  permit persons  to  whom  the Software  is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE  IS PROVIDED "AS  IS", WITHOUT WARRANTY  OF ANY KIND,  EXPRESS OR
+IMPLIED,  INCLUDING BUT  NOT  LIMITED TO  THE  WARRANTIES OF  MERCHANTABILITY,
+FITNESS FOR  A PARTICULAR PURPOSE AND  NONINFRINGEMENT. IN NO EVENT  SHALL THE
+AUTHORS  OR COPYRIGHT  HOLDERS  BE  LIABLE FOR  ANY  CLAIM,  DAMAGES OR  OTHER
+LIABILITY, WHETHER IN AN ACTION OF  CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE  OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+
+#include "gtest/gtest.h"
+
+#include "llvm/SmallString.h"
+
+#include "unit-json.h"
+
+#include "support/json_serializer.h"
+
+using wpi::json;
+
+class JsonTypeNameTest
+    : public ::testing::TestWithParam<std::pair<json::value_t, const char*>> {};
+TEST_P(JsonTypeNameTest, Case)
+{
+    EXPECT_EQ(json(GetParam().first).type_name(), GetParam().second);
+}
+
+static const std::pair<json::value_t, const char*> type_name_cases[] = {
+    {json::value_t::null, "null"},
+    {json::value_t::object, "object"},
+    {json::value_t::array, "array"},
+    {json::value_t::number_integer, "number"},
+    {json::value_t::number_unsigned, "number"},
+    {json::value_t::number_float, "number"},
+    {json::value_t::boolean, "boolean"},
+    {json::value_t::string, "string"},
+    {json::value_t::discarded, "discarded"},
+};
+
+INSTANTIATE_TEST_CASE_P(JsonTypeNameTests, JsonTypeNameTest,
+                        ::testing::ValuesIn(type_name_cases));
+
+class JsonStringEscapeTest
+    : public ::testing::TestWithParam<std::pair<const char*, const char*>> {};
+TEST_P(JsonStringEscapeTest, Case)
+{
+    llvm::SmallString<32> buf;
+    llvm::raw_svector_ostream ss(buf);
+    json::serializer s(ss);
+    s.dump_escaped(GetParam().first);
+    EXPECT_EQ(ss.str(), llvm::StringRef(GetParam().second));
+}
+
+static const std::pair<const char*, const char*> string_escape_cases[] = {
+    {"\"", "\\\""},
+    {"\\", "\\\\"},
+    {"\b", "\\b"},
+    {"\f", "\\f"},
+    {"\n", "\\n"},
+    {"\r", "\\r"},
+    {"\t", "\\t"},
+
+    {"\x01", "\\u0001"},
+    {"\x02", "\\u0002"},
+    {"\x03", "\\u0003"},
+    {"\x04", "\\u0004"},
+    {"\x05", "\\u0005"},
+    {"\x06", "\\u0006"},
+    {"\x07", "\\u0007"},
+    {"\x08", "\\b"},
+    {"\x09", "\\t"},
+    {"\x0a", "\\n"},
+    {"\x0b", "\\u000b"},
+    {"\x0c", "\\f"},
+    {"\x0d", "\\r"},
+    {"\x0e", "\\u000e"},
+    {"\x0f", "\\u000f"},
+    {"\x10", "\\u0010"},
+    {"\x11", "\\u0011"},
+    {"\x12", "\\u0012"},
+    {"\x13", "\\u0013"},
+    {"\x14", "\\u0014"},
+    {"\x15", "\\u0015"},
+    {"\x16", "\\u0016"},
+    {"\x17", "\\u0017"},
+    {"\x18", "\\u0018"},
+    {"\x19", "\\u0019"},
+    {"\x1a", "\\u001a"},
+    {"\x1b", "\\u001b"},
+    {"\x1c", "\\u001c"},
+    {"\x1d", "\\u001d"},
+    {"\x1e", "\\u001e"},
+    {"\x1f", "\\u001f"},
+};
+
+INSTANTIATE_TEST_CASE_P(JsonStringEscapeTests, JsonStringEscapeTest,
+                        ::testing::ValuesIn(string_escape_cases));