mirror of
https://github.com/msgpack/msgpack-c.git
synced 2025-10-13 22:50:19 +02:00
lang/c/msgpack: reimplemented C++ binding with template-based static resolution design
git-svn-id: file:///Users/frsyuki/project/msgpack-git/svn/x@67 5a5092ae-2292-43ba-b2d5-dcab9c1a2731
This commit is contained in:
frsyuki
497
cpp/object.cpp
497
cpp/object.cpp
@@ -16,417 +16,128 @@
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// limitations under the License.
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//
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#include "msgpack/object.hpp"
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#include "msgpack/pack.hpp"
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#include <string.h>
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namespace msgpack {
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namespace {
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template <typename T, typename X, bool TSigned, bool XSigned>
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struct numeric_overflow_signed_impl;
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std::ostream& operator<< (std::ostream& s, const object o)
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{
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switch(o.type) {
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case type::NIL:
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s << "nil";
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break;
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template <typename T, typename X>
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struct numeric_overflow_signed_impl<T, X, true, true> {
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static int test(X x) {
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if( ( std::numeric_limits<T>::is_integer && std::numeric_limits<X>::is_integer) ||
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(!std::numeric_limits<T>::is_integer && !std::numeric_limits<X>::is_integer) ) {
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if( sizeof(T) < sizeof(X) ) {
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if( static_cast<X>( std::numeric_limits<T>::max()) < x ) { return 1; }
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if( static_cast<X>(-std::numeric_limits<T>::max()) > x ) { return -1; }
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case type::BOOLEAN:
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s << (o.via.boolean ? "true" : "false");
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break;
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case type::POSITIVE_INTEGER:
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s << o.via.u64;
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break;
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case type::NEGATIVE_INTEGER:
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s << o.via.i64;
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break;
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case type::RAW:
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(s << '"').write(o.via.ref.ptr, o.via.ref.size) << '"';
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break;
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case type::ARRAY:
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s << "[";
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if(o.via.container.size != 0) {
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object* p(o.via.container.ptr);
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s << *p;
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++p;
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for(object* const pend(o.via.container.ptr + o.via.container.size);
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p < pend; ++p) {
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s << ", " << *p;
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}
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} else if(std::numeric_limits<T>::is_integer) {
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if( static_cast<X>( std::numeric_limits<T>::max()) < x) { return 1; }
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if( static_cast<X>(-std::numeric_limits<T>::max()) > x) { return -1; }
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}
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return 0;
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}
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};
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s << "]";
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break;
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// FIXME loop optimiziation
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template <typename T, typename X>
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struct numeric_overflow_signed_impl<T, X, true, false> {
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static int test(X x) {
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if( ( std::numeric_limits<T>::is_integer && std::numeric_limits<X>::is_integer) ||
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(!std::numeric_limits<T>::is_integer && !std::numeric_limits<X>::is_integer) ) {
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if( sizeof(T) <= sizeof(X) ) {
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if( static_cast<X>(std::numeric_limits<T>::max()) < x ) { return 1; }
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case type::MAP:
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s << "{";
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if(o.via.container.size != 0) {
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object* p(o.via.container.ptr);
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object* const pend(o.via.container.ptr + o.via.container.size*2);
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s << *p; ++p;
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s << "=>";
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s << *p; ++p;
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while(p < pend) {
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s << ", ";
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s << *p; ++p;
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s << "=>";
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s << *p; ++p;
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}
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} else if(std::numeric_limits<T>::is_integer) {
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if( static_cast<X>( std::numeric_limits<T>::max()) < x) { return 1; }
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}
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return 0;
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}
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};
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s << "}";
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break;
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// FIXME loop optimiziation
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template <typename T, typename X>
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struct numeric_overflow_signed_impl<T, X, false, true> {
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static int test(X x) {
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if( static_cast<X>(0) > x ) { return -1; }
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if( ( std::numeric_limits<T>::is_integer && std::numeric_limits<X>::is_integer) ||
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(!std::numeric_limits<T>::is_integer && !std::numeric_limits<X>::is_integer) ) {
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if( sizeof(T) < sizeof(X) ) {
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if( static_cast<X>(std::numeric_limits<T>::max()) < x ) { return 1; }
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}
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} else if(std::numeric_limits<T>::is_integer) {
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if( static_cast<X>( std::numeric_limits<T>::max()) < x) { return 1; }
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default:
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// FIXME
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s << "#<UNKNOWN " << (uint16_t)o.type << ">" << std::endl;
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}
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return s;
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}
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bool operator==(const object x, const object y)
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{
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if(x.type != y.type) { return false; }
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switch(x.type) {
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case type::NIL:
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return true;
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case type::BOOLEAN:
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return x.via.boolean == y.via.boolean;
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case type::POSITIVE_INTEGER:
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return x.via.u64 == y.via.u64;
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case type::NEGATIVE_INTEGER:
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return x.via.i64 == y.via.i64;
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case type::RAW:
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return x.via.ref.size == y.via.ref.size &&
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memcmp(x.via.ref.ptr, y.via.ref.ptr, x.via.ref.size) == 0;
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case type::ARRAY:
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if(x.via.container.size != y.via.container.size) { return false; }
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for(object* px(x.via.container.ptr),
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* const pxend(x.via.container.ptr + x.via.container.size),
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* py(y.via.container.ptr);
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px != pxend; ++px, ++py) {
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if(*px != *py) { return false; }
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}
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return 0;
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}
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};
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return true;
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// FIXME loop optimiziation
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template <typename T, typename X>
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struct numeric_overflow_signed_impl<T, X, false, false> {
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static int test(X x) {
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if( ( std::numeric_limits<T>::is_integer && std::numeric_limits<X>::is_integer) ||
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(!std::numeric_limits<T>::is_integer && !std::numeric_limits<X>::is_integer) ) {
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if( sizeof(T) < sizeof(X) ) {
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if( static_cast<X>(std::numeric_limits<T>::max()) < x ) { return 1; }
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}
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} else if(std::numeric_limits<T>::is_integer) {
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if( static_cast<X>(std::numeric_limits<T>::max()) < x ) { return 1; }
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case type::MAP:
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if(x.via.container.size != y.via.container.size) { return false; }
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for(object* px(x.via.container.ptr),
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* const pxend(x.via.container.ptr + x.via.container.size*2),
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* py(y.via.container.ptr);
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px != pxend; ++px, ++py) {
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if(*px != *py) { return false; }
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}
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return 0;
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return true;
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default:
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return false;
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}
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};
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template <typename T, typename X>
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struct numeric_overflow {
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static int test(X x) {
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return numeric_overflow_signed_impl<T, X, std::numeric_limits<T>::is_signed, std::numeric_limits<X>::is_signed>::test(x);
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}
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static void check(X x) {
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int r = test(x);
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if(r == 1) { throw positive_overflow_error(); }
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if(r == -1) { throw negative_overflow_error(); }
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}
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};
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template <typename T, typename X>
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struct numeric_underflow {
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static bool test(X x) {
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return static_cast<X>(static_cast<T>(x)) != x;
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}
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static void check(X x) {
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if(test(x)) { throw underflow_error(); }
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}
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};
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template <typename T, typename X>
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inline T integer_cast(X x) {
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numeric_overflow<T,X>::check(x);
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return static_cast<T>(x); }
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template <typename T, typename X>
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inline T float_cast(X x) {
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numeric_overflow<T,X>::check(x);
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numeric_underflow<T,X>::check(x);
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return static_cast<T>(x); }
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template <typename V>
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inline bool numequal(V v, const object_class* x)
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try { return v == static_cast<V>(*x); }
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catch (type_error&) { return false; }
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template <typename V>
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inline bool numless(V v, const object_class* x)
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try { return v < static_cast<V>(*x); }
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catch (positive_overflow_error&) { return true; }
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catch (overflow_error&) { return false; }
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template <typename V>
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inline bool numgreater(V v, const object_class* x)
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try { return v > static_cast<V>(*x); }
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catch (negative_overflow_error&) { return true; }
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catch (overflow_error&) { return false; }
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template <typename V>
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inline void numeric_inspect(V v, std::ostream& s)
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{ s << v; }
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template <>
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inline void numeric_inspect<uint8_t>(uint8_t v, std::ostream& s)
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{ s << (uint16_t)v; }
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template <>
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inline void numeric_inspect<int8_t>(int8_t v, std::ostream& s)
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{ s << (int16_t)v; }
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template <typename V>
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inline void numeric_pack(dynamic_packer& p, V v);
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template <>
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inline void numeric_pack<uint8_t>(dynamic_packer& p, uint8_t v)
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{ p.pack_uint8(v); }
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template <>
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inline void numeric_pack<uint16_t>(dynamic_packer& p, uint16_t v)
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{ p.pack_uint16(v); }
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template <>
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inline void numeric_pack<uint32_t>(dynamic_packer& p, uint32_t v)
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{ p.pack_uint32(v); }
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template <>
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inline void numeric_pack<uint64_t>(dynamic_packer& p, uint64_t v)
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{ p.pack_uint64(v); }
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template <>
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inline void numeric_pack<int8_t>(dynamic_packer& p, int8_t v)
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{ p.pack_int8(v); }
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template <>
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inline void numeric_pack<int16_t>(dynamic_packer& p, int16_t v)
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{ p.pack_int16(v); }
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template <>
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inline void numeric_pack<int32_t>(dynamic_packer& p, int32_t v)
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{ p.pack_int32(v); }
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template <>
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inline void numeric_pack<int64_t>(dynamic_packer& p, int64_t v)
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{ p.pack_int64(v); }
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template <>
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inline void numeric_pack<float>(dynamic_packer& p, float v)
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{ p.pack_float(v); }
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template <>
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inline void numeric_pack<double>(dynamic_packer& p, double v)
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{ p.pack_double(v); }
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} // noname namespace
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bool object_nil::isnil() const { return true; }
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bool object_nil::operator== (const object_class* x) const
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{ return typeid(*this) == typeid(*x); }
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void object_nil::pack(dynamic_packer& p) const
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{ p.pack_nil(); }
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const object_class* object_nil::inspect(std::ostream& s) const
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{ s << "nil"; return this; }
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bool object_true::xbool() const { return true; }
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bool object_true::operator== (const object_class* x) const
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{ return typeid(*this) == typeid(*x); }
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void object_true::pack(dynamic_packer& p) const
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{ p.pack_true(); }
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const object_class* object_true::inspect(std::ostream& s) const
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{ s << "true"; return this; }
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bool object_false::xbool() const { return false; }
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bool object_false::operator== (const object_class* x) const
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{ return typeid(*this) == typeid(*x); }
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void object_false::pack(dynamic_packer& p) const
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{ p.pack_false(); }
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const object_class* object_false::inspect(std::ostream& s) const
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{ s << "false"; return this; }
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#define INTEGER_OBJECT(NAME) \
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uint8_t object_##NAME::xu8 () const { return val; } \
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uint16_t object_##NAME::xu16 () const { return integer_cast<uint16_t>(val); } \
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uint32_t object_##NAME::xu32 () const { return integer_cast<uint32_t>(val); } \
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uint64_t object_##NAME::xu64 () const { return integer_cast<uint64_t>(val); } \
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int8_t object_##NAME::xi8 () const { return integer_cast<int8_t>(val); } \
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int16_t object_##NAME::xi16 () const { return integer_cast<int16_t>(val); } \
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int32_t object_##NAME::xi32 () const { return integer_cast<int32_t>(val); } \
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int64_t object_##NAME::xi64 () const { return integer_cast<int64_t>(val); } \
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float object_##NAME::xfloat () const { return integer_cast<float>(val); } \
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double object_##NAME::xdouble() const { return integer_cast<double>(val); } \
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bool object_##NAME::operator== (const object_class* x) const \
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try { return val == x->x##NAME(); } \
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catch (type_error&) { return false; } \
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bool object_##NAME::operator< (const object_class* x) const \
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try { return val < x->x##NAME(); } \
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catch (positive_overflow_error&) { return true; } \
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catch (overflow_error&) { return false; } \
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bool object_##NAME::operator> (const object_class* x) const \
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try { return val > x->x##NAME(); } \
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catch (negative_overflow_error&) { return true; } \
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catch (overflow_error&) { return false; } \
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void object_##NAME::pack(dynamic_packer& p) const \
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{ numeric_pack(p, val); } \
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const object_class* object_##NAME::inspect(std::ostream& s) const \
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{ numeric_inspect(val, s); return this; } \
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INTEGER_OBJECT(u8)
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INTEGER_OBJECT(u16)
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INTEGER_OBJECT(u32)
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INTEGER_OBJECT(u64)
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INTEGER_OBJECT(i8)
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INTEGER_OBJECT(i16)
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INTEGER_OBJECT(i32)
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INTEGER_OBJECT(i64)
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#undef INTEGER_OBJECT
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#define FLOAT_OBJECT(NAME) \
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uint8_t object_##NAME::xu8 () const { return val; } \
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uint16_t object_##NAME::xu16 () const { return integer_cast<uint16_t>(val); } \
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uint32_t object_##NAME::xu32 () const { return integer_cast<uint32_t>(val); } \
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uint64_t object_##NAME::xu64 () const { return integer_cast<uint64_t>(val); } \
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int8_t object_##NAME::xi8 () const { return integer_cast<int8_t>(val); } \
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int16_t object_##NAME::xi16 () const { return integer_cast<int16_t>(val); } \
|
||||
int32_t object_##NAME::xi32 () const { return integer_cast<int32_t>(val); } \
|
||||
int64_t object_##NAME::xi64 () const { return integer_cast<int64_t>(val); } \
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||||
float object_##NAME::xfloat () const { return float_cast<float>(val); } \
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||||
double object_##NAME::xdouble() const { return float_cast<double>(val); } \
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bool object_##NAME::operator== (const object_class* x) const \
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try { return val == x->x##NAME(); } \
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||||
catch (type_error&) { return false; } \
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bool object_##NAME::operator< (const object_class* x) const { \
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try { return val < x->xdouble(); } \
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||||
catch (positive_overflow_error&) { return true; } \
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||||
catch (overflow_error&) { return false; } \
|
||||
catch (underflow_error&) { \
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||||
if(val < 0.0) { \
|
||||
if(numeric_overflow<int64_t, double>::test(val) == -1) { return true; } \
|
||||
try { return static_cast<int64_t>(val) < x->xi64(); } \
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||||
catch (type_error&) { return true; } \
|
||||
} else { \
|
||||
if(numeric_overflow<uint64_t, double>::test(val) == 1) { return false; } \
|
||||
try { return static_cast<uint64_t>(val) < x->xu64(); } \
|
||||
catch (type_error&) { return false; } \
|
||||
} \
|
||||
} } \
|
||||
bool object_##NAME::operator> (const object_class* x) const { \
|
||||
try { return val > x->xdouble(); } \
|
||||
catch (negative_overflow_error&) { return true; } \
|
||||
catch (overflow_error&) { return false; } \
|
||||
catch (underflow_error&) { \
|
||||
if(val < 0.0) { \
|
||||
if(numeric_overflow<int64_t, double>::test(val) == -1) { return false; } \
|
||||
try { return static_cast<int64_t>(val) > x->xi64(); } \
|
||||
catch (type_error&) { return false; } \
|
||||
} else { \
|
||||
if(numeric_overflow<uint64_t, double>::test(val) == 1) { return true; } \
|
||||
try { return static_cast<uint64_t>(val) > x->xu64(); } \
|
||||
catch (type_error&) { return true; } \
|
||||
} \
|
||||
} } \
|
||||
void object_##NAME::pack(dynamic_packer& p) const \
|
||||
{ numeric_pack(p, val); } \
|
||||
const object_class* object_##NAME::inspect(std::ostream& s) const \
|
||||
{ s << val; return this; } \
|
||||
|
||||
FLOAT_OBJECT(float)
|
||||
FLOAT_OBJECT(double)
|
||||
|
||||
#undef FLOAT_OBJECT
|
||||
|
||||
|
||||
#define RAW_OBJECT(NAME, EXTRA) \
|
||||
EXTRA \
|
||||
bool object_##NAME::operator== (const object_class* x) const \
|
||||
try { \
|
||||
raw xr(x->xraw()); \
|
||||
return len == xr.len && (ptr == xr.ptr || memcmp(ptr, xr.ptr, len) == 0); \
|
||||
} catch (type_error&) { return false; } \
|
||||
bool object_##NAME::operator< (const object_class* x) const { \
|
||||
raw xr(x->xraw()); \
|
||||
if(len == xr.len) { return ptr != xr.ptr && memcmp(ptr, xr.ptr, len) < 0; } \
|
||||
else { return len < xr.len; } } \
|
||||
bool object_##NAME::operator> (const object_class* x) const { \
|
||||
raw xr(x->xraw()); \
|
||||
if(len == xr.len) { return ptr != xr.ptr && memcmp(ptr, xr.ptr, len) > 0; } \
|
||||
else { return len > xr.len; } } \
|
||||
void object_##NAME::pack(dynamic_packer& p) const \
|
||||
{ p.pack_raw(ptr, len); } \
|
||||
const object_class* object_##NAME::inspect(std::ostream& s) const \
|
||||
{ (s << '"').write(ptr, len) << '"'; return this; } // FIXME escape
|
||||
}
|
||||
|
||||
|
||||
// FIXME
|
||||
RAW_OBJECT(mutable_raw_ref,
|
||||
/*mutable_raw object_mutable_raw_ref::xraw() { return mutable_raw(ptr, len); }*/
|
||||
raw object_mutable_raw_ref::xraw() const { return raw(ptr, len); } )
|
||||
|
||||
RAW_OBJECT(raw_ref,
|
||||
raw object_raw_ref::xraw() const { return raw(ptr, len); } )
|
||||
|
||||
#undef RAW_OBJECT
|
||||
|
||||
|
||||
array& object_array::xarray() { return val; }
|
||||
const array& object_array::xarray() const { return val; }
|
||||
bool object_array::operator== (const object_class* x) const
|
||||
try {
|
||||
const std::vector<object>& xa(x->xarray());
|
||||
if(val.size() != xa.size()) { return false; }
|
||||
for(std::vector<object>::const_iterator iv(val.begin()), iv_end(val.end()), ix(xa.begin());
|
||||
iv != iv_end;
|
||||
++iv, ++ix) {
|
||||
if(*iv != *ix) { return false; }
|
||||
}
|
||||
return true;
|
||||
} catch (type_error&) { return false; }
|
||||
const object_class* object_array::inspect(std::ostream& s) const
|
||||
{
|
||||
s << '[';
|
||||
if(!val.empty()) {
|
||||
std::vector<object>::const_iterator it(val.begin());
|
||||
s << *it;
|
||||
++it;
|
||||
for(std::vector<object>::const_iterator it_end(val.end());
|
||||
it != it_end;
|
||||
++it) {
|
||||
s << ", " << *it;
|
||||
}
|
||||
}
|
||||
s << ']';
|
||||
return this;
|
||||
}
|
||||
void object_array::pack(dynamic_packer& p) const
|
||||
{
|
||||
p.pack_array(val.size());
|
||||
for(std::vector<object>::const_iterator it(val.begin()), it_end(val.end());
|
||||
it != it_end;
|
||||
++it) {
|
||||
it->pack(p);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
map& object_map::xmap() { return val; }
|
||||
const map& object_map::xmap() const { return val; }
|
||||
bool object_map::operator== (const object_class* x) const
|
||||
try {
|
||||
const std::map<object, object>& xm(x->xmap());
|
||||
if(val.size() != xm.size()) { return false; }
|
||||
for(std::map<object, object>::const_iterator iv(val.begin()), iv_end(val.end()), ix(xm.begin());
|
||||
iv != iv_end;
|
||||
++iv, ++ix) {
|
||||
if(iv->first != ix->first || iv->second != ix->first) { return false; }
|
||||
}
|
||||
return true;
|
||||
} catch (type_error&) { return false; }
|
||||
const object_class* object_map::inspect(std::ostream& s) const
|
||||
{
|
||||
s << '{';
|
||||
if(!val.empty()) {
|
||||
std::map<object, object>::const_iterator it(val.begin());
|
||||
s << it->first << "=>" << it->second;
|
||||
++it;
|
||||
for(std::map<object, object>::const_iterator it_end(val.end());
|
||||
it != it_end;
|
||||
++it) {
|
||||
s << ", " << it->first << "=>" << it->second;
|
||||
}
|
||||
}
|
||||
s << '}';
|
||||
return this;
|
||||
}
|
||||
void object_map::pack(dynamic_packer& p) const
|
||||
{
|
||||
p.pack_map(val.size());
|
||||
for(std::map<object, object>::const_iterator it(val.begin()), it_end(val.end());
|
||||
it != it_end;
|
||||
++it) {
|
||||
it->first.pack(p);
|
||||
it->second.pack(p);
|
||||
}
|
||||
}
|
||||
//template <typename Stream>
|
||||
//const object& operator>> (const object& v, packer<Stream>& o);
|
||||
|
||||
|
||||
} // namespace msgpack
|
||||
|
||||
Reference in New Issue
Block a user