35 lines
916 B
C++
35 lines
916 B
C++
#include <iostream>
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#include <nlohmann/json_view.hpp>
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using json_document = nlohmann::json_document;
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using json_pointer = nlohmann::json::json_pointer;
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int main()
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{
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json_document doc = json_document::parse(R"({"region": "eu", "servers": ["eu-1", "eu-2"]})");
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const auto root = doc.root();
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std::cout << root.at(json_pointer("/servers/1")).materialize().dump() << '\n';
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// at() throws for every resolution failure -- with the very same
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// message json::at(ptr) would throw for the same pointer and the same
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// document
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try
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{
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static_cast<void>(root.at(json_pointer("/servers/5")));
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}
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catch (const nlohmann::json::out_of_range& e)
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{
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std::cout << e.what() << '\n';
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}
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try
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{
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static_cast<void>(root.at(json_pointer("/missing")));
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}
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catch (const nlohmann::json::out_of_range& e)
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{
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std::cout << e.what() << '\n';
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}
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}
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