78 lines
2 KiB
C++
78 lines
2 KiB
C++
/*
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Copyright (c) 2013 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#include <string>
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#include <limits>
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#include <stdio.h>
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#include <ios>
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#include "util/serializer.h"
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#include "util/exception.h"
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namespace lean {
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void serializer_core::write_unsigned(unsigned i) {
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static_assert(sizeof(i) == 4, "unexpected unsigned size");
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m_out.put((i >> 24) & 0xff);
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m_out.put((i >> 16) & 0xff);
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m_out.put((i >> 8) & 0xff);
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m_out.put(i & 0xff);
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}
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void serializer_core::write_int(int i) {
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static_assert(sizeof(i) == 4, "unexpected int size");
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write_unsigned(i);
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}
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#define BIG_BUFFER 1024
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corrupted_stream_exception::corrupted_stream_exception():
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exception("corrupted binary file") {}
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void serializer_core::write_double(double d) {
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std::ostringstream out;
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// TODO(Leo): the following code may miss precision.
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// We should use std::ios::hexfloat, but it is not supported by
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// g++ yet.
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out.flags (std::ios::scientific);
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out.precision(std::numeric_limits<double>::digits10 + 1);
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out << std::hex << d;
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write_string(out.str());
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}
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std::string deserializer_core::read_string() {
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std::string r;
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while (true) {
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char c = m_in.get();
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if (c == 0)
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break;
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if (c == EOF)
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throw corrupted_stream_exception();
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r += c;
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}
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return r;
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}
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unsigned deserializer_core::read_unsigned() {
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unsigned r;
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static_assert(sizeof(r) == 4, "unexpected unsigned size");
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r = static_cast<unsigned>(m_in.get()) << 24;
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r |= static_cast<unsigned>(m_in.get()) << 16;
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r |= static_cast<unsigned>(m_in.get()) << 8;
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r |= static_cast<unsigned>(m_in.get());
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return r;
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}
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int deserializer_core::read_int() {
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return read_unsigned();
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}
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double deserializer_core::read_double() {
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// TODO(Leo): use std::hexfloat as soon as it is supported by g++
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std::istringstream in(read_string());
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double r;
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in >> r;
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return r;
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}
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}
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