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//
// Copyright (c) 2019 Vinnie Falco (vinnie.falco@gmail.com)
//
// Distributed under the Boost Software License, Version 1.0. (See accompanying
// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
//
// Official repository: https://github.com/boostorg/json
//
// Test that header file is self-contained.
#include <boost/json/value_stack.hpp>
#include <boost/json/serialize.hpp>
#include <boost/json/static_resource.hpp>
#include "test_suite.hpp"
namespace boost {
namespace json {
BOOST_STATIC_ASSERT( std::is_nothrow_destructible<value_stack>::value );
class value_stack_test
{
public:
// This is from the javadoc
void
testValueStack()
{
//----------------------------------
// value_stack
{
// This example builds a json::value without any dynamic memory allocations:
// Construct the value stack using a local buffer
unsigned char temp[4096];
value_stack st( storage_ptr(), temp, sizeof(temp) );
// Create a static resource with a local initial buffer
unsigned char buf[4096];
static_resource mr( buf, sizeof(buf) );
// All values on the stack will use `mr`
st.reset(&mr);
// Push the key/value pair "a":1.
st.push_key("a");
st.push_int64(1);
// Push "b":null
st.push_key("b");
st.push_null();
// Push "c":"hello"
st.push_key("c");
st.push_string("hello");
// Pop the three key/value pairs and push an object with those three values.
st.push_object(3);
// Pop the object from the stack and take ownership.
value jv = st.release();
assert( serialize(jv) == "{\"a\":1,\"b\":null,\"c\":\"hello\"}" );
// At this point we could re-use the stack by calling reset
}
//----------------------------------
// value_stack::push_array
{
value_stack st;
// reset must be called first or else the behavior is undefined
st.reset();
// Place three values on the stack
st.push_int64( 1 );
st.push_int64( 2 );
st.push_int64( 3 );
// Remove the 3 values, and push an array with those 3 elements on the stack
st.push_array( 3 );
// Pop the object from the stack and take ownership.
value jv = st.release();
assert( serialize(jv) == "[1,2,3]" );
// At this point, reset must be called again to use the stack
}
//----------------------------------
// value_stack::push_object
{
value_stack st;
// reset must be called first or else the behavior is undefined
st.reset();
// Place a key/value pair onto the stack
st.push_key( "x" );
st.push_bool( true );
// Replace the key/value pair with an object containing a single element
st.push_object( 1 );
// Pop the object from the stack and take ownership.
value jv = st.release();
assert( serialize(jv) == "{\"x\":true}" );
// At this point, reset must be called again to use the stack
}
}
void
run()
{
testValueStack();
}
};
TEST_SUITE(value_stack_test, "boost.json.value_stack");
} // namespace json
} // namespace boost
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