Make the Solidity repository standalone.

This commit is the culmination of several months of work to decouple Solidity from the webthree-umbrella so that it can be developed in parallel with cpp-ethereum (the Ethereum C++ runtime) and so that even for the Solidity unit-tests there is no hard-dependency onto the C++ runtime.

The Tests-over-IPC refactoring was a major step in the same process which was already committed.

This commit contains the following changes:

- A subset of the CMake functionality in webthree-helpers was extracted and tailored for Solidity into ./cmake.   Further cleanup is certainly possible.
- A subset of the libdevcore functionality in libweb3core was extracted and tailored for Solidity into ./libdevcore.   Further cleanup is certainly possible
- The gas price constants in EVMSchedule were orphaned into libevmasm.
- Some other refactorings and cleanups were made to sever unnecessary EVM dependencies in the Solidity unit-tests.
- TravisCI and Appveyor support was added, covering builds and running of the unit-tests (Linux and macOS only for now)
- A bug-fix was made to get the Tests-over-IPC running on macOS.
- There are still reliability issues in the unit-tests, which need immediate attention.    The Travis build has been flipped to run the unit-tests 5 times, to try to flush these out.
- The Emscripten automation which was previously in webthree-umbrella was merged into the TravisCI automation here.
- The development ZIP deployment step has been commented out, but we will want to read that ONLY for release branch.

Further iteration on these changes will definitely be needed, but I feel these have got to sufficient maturity than holding them back further isn't winning us anything.    It is go time :-)

1 files changed, 54 insertions, 0 deletions

diff --git a/libdevcore/CommonIO.h b/libdevcore/CommonIO.h
new file mode 100644
index 00000000..8238fe0f
--- /dev/null
+++ b/libdevcore/CommonIO.h
@@ -0,0 +1,54 @@
+/*
+	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 CommonIO.h
+ * @author Gav Wood <i@gavwood.com>
+ * @date 2014
+ *
+ * File & stream I/O routines.
+ */
+
+#pragma once
+
+#include <sstream>
+#include <string>
+#include "Common.h"
+
+namespace dev
+{
+
+/// Retrieve and returns the contents of the given file as a std::string.
+/// If the file doesn't exist or isn't readable, returns an empty container / bytes.
+std::string contentsString(std::string const& _file);
+
+/// Write the given binary data into the given file, replacing the file if it pre-exists.
+/// Throws exception on error.
+/// @param _writeDeleteRename useful not to lose any data: If set, first writes to another file in
+/// the same directory and then moves that file.
+void writeFile(std::string const& _file, bytesConstRef _data, bool _writeDeleteRename = false);
+/// Write the given binary data into the given file, replacing the file if it pre-exists.
+inline void writeFile(std::string const& _file, bytes const& _data, bool _writeDeleteRename = false) { writeFile(_file, bytesConstRef(&_data), _writeDeleteRename); }
+inline void writeFile(std::string const& _file, std::string const& _data, bool _writeDeleteRename = false) { writeFile(_file, bytesConstRef(_data), _writeDeleteRename); }
+/// Converts arbitrary value to string representation using std::stringstream.
+template <class _T>
+std::string toString(_T const& _t)
+{
+	std::ostringstream o;
+	o << _t;
+	return o.str();
+}
+
+}