Transition from bytecode to more general linker objects.

1 files changed, 62 insertions, 0 deletions

diff --git a/LinkerObject.cpp b/LinkerObject.cpp
new file mode 100644
index 00000000..ceb864a1
--- /dev/null
+++ b/LinkerObject.cpp
@@ -0,0 +1,62 @@
+/*
+	This file is part of cpp-ethereum.
+
+	cpp-ethereum is free software: you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+
+	cpp-ethereum is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/** @file LinkerObject.cpp
+ * @author Christian R <c@ethdev.com>
+ * @date 2015
+ */
+
+#include <libevmasm/LinkerObject.h>
+#include <libdevcore/CommonData.h>
+
+using namespace dev;
+using namespace dev::eth;
+using namespace std;
+
+void LinkerObject::append(LinkerObject const& _other)
+{
+	for (auto const& ref: _other.linkReferences)
+		linkReferences[ref.first + bytecode.size()] = ref.second;
+	bytecode += _other.bytecode;
+}
+
+void LinkerObject::link(map<string, h160> const& _libraryAddresses)
+{
+	std::map<size_t, std::string> remainingRefs;
+	for (auto const& linkRef: linkReferences)
+	{
+		auto it = _libraryAddresses.find(linkRef.second);
+		if (it == _libraryAddresses.end())
+			remainingRefs.insert(linkRef);
+		else
+			it->second.ref().copyTo(ref(bytecode).cropped(linkRef.first, 20));
+	}
+	linkReferences.swap(remainingRefs);
+}
+
+string LinkerObject::toHex() const
+{
+	string hex = dev::toHex(bytecode);
+	for (auto const& ref: linkReferences)
+	{
+		size_t pos = ref.first * 2;
+		string const& name = ref.second;
+		hex[pos] = hex[pos + 1] = hex[pos + 38] = hex[pos + 39] = '_';
+		for (size_t i = 0; i < 36; ++i)
+			hex[pos + 2 + i] = i < name.size() ? name[i] : '_';
+	}
+	return hex;
+}