Ever more repotting.

1 files changed, 59 insertions, 0 deletions

diff --git a/CodeLocation.cpp b/CodeLocation.cpp
new file mode 100644
index 00000000..2c9ca264
--- /dev/null
+++ b/CodeLocation.cpp
@@ -0,0 +1,59 @@
+/*
+	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 CodeLocation.cpp
+ * @author Gav Wood <i@gavwood.com>
+ * @date 2014
+ */
+
+#include "CodeLocation.h"
+#include "CodeFragment.h"
+using namespace std;
+using namespace eth;
+
+CodeLocation::CodeLocation(CodeFragment* _f)
+{
+	m_f = _f;
+	m_pos = _f->m_code.size();
+}
+
+unsigned CodeLocation::get() const
+{
+	assert(m_f->m_code[m_pos - 1] == (byte)Instruction::PUSH4);
+	bytesConstRef r(&m_f->m_code[m_pos], 4);
+	return fromBigEndian<uint32_t>(r);
+}
+
+void CodeLocation::set(unsigned _val)
+{
+	assert(m_f->m_code[m_pos - 1] == (byte)Instruction::PUSH4);
+	assert(!get());
+	bytesRef r(&m_f->m_code[m_pos], 4);
+	toBigEndian(_val, r);
+}
+
+void CodeLocation::anchor()
+{
+	set(m_f->m_code.size());
+}
+
+void CodeLocation::increase(unsigned _val)
+{
+	assert(m_f->m_code[m_pos - 1] == (byte)Instruction::PUSH4);
+	bytesRef r(&m_f->m_code[m_pos], 4);
+	toBigEndian(get() + _val, r);
+}
+