/*

* Copyright 2024 WebAssembly Community Group participants

*

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

*

* http://www.apache.org/licenses/LICENSE-2.0

*

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

*/

#include "support/json.h"

#include "support/string.h"

namespace json {

void Value::stringify(std::ostream& os, bool pretty, int indent) {

auto doIndent = [&]() {

for (int i = 0; i < indent; i++) {

os << ' ';

}

};

auto maybeNewline = [&]() {

if (pretty) {

os << '\n';

doIndent();

}

};

switch (type) {

case String: {

std::stringstream wtf16;

[[maybe_unused]] bool valid =

wasm::String::convertWTF8ToWTF16(wtf16, getIString().view());

assert(valid);

// TODO: Use wtf16.view() once we have C++20.

wasm::String::printEscapedJSON(os, wtf16.str());

return;

}

case Array: {

os << '[';

indent++;

auto first = true;

for (auto& item : getArray()) {

if (first) {

first = false;

} else {

os << ',';

}

maybeNewline();

item->stringify(os, pretty, indent);

}

indent--;

maybeNewline();

os << ']';

return;

}

case Object: {

os << '{';

indent++;

auto first = true;

for (auto& [key, value] : getObject()) {

if (first) {

first = false;

} else {

os << ',';

}

maybeNewline();

os << "\"" << key << "\":";

if (pretty) {

os << ' ';

}

value->stringify(os, pretty, indent);

}

indent--;

maybeNewline();

os << '}';

return;

}

case Number:

os << getNumber();

return;

case Null:

os << "null";

return;

case Bool:

os << (getBool() ? "true" : "false");

return;

};

}

} // namespace json