1 files changed, 132 insertions, 0 deletions
diff --git a/liblangutil/Exceptions.h b/liblangutil/Exceptions.h
new file mode 100644
index 00000000..69efd6dd
--- /dev/null
+++ b/liblangutil/Exceptions.h
@@ -0,0 +1,132 @@
+/*
+    This file is part of solidity.
+
+    solidity 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.
+
+    solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
+*/
+/**
+ * @author Christian <c@ethdev.com>
+ * @date 2014
+ * Solidity exception hierarchy.
+ */
+
+#pragma once
+
+#include <string>
+#include <utility>
+#include <libdevcore/Exceptions.h>
+#include <libdevcore/Assertions.h>
+#include <liblangutil/SourceLocation.h>
+
+namespace dev
+{
+namespace solidity
+{
+class Error;
+using ErrorList = std::vector<std::shared_ptr<Error const>>;
+
+struct CompilerError: virtual Exception {};
+struct InternalCompilerError: virtual Exception {};
+struct FatalError: virtual Exception {};
+struct UnimplementedFeatureError: virtual Exception{};
+
+/// Assertion that throws an InternalCompilerError containing the given description if it is not met.
+#define solAssert(CONDITION, DESCRIPTION) \
+        assertThrow(CONDITION, ::dev::solidity::InternalCompilerError, DESCRIPTION)
+
+#define solUnimplementedAssert(CONDITION, DESCRIPTION) \
+        assertThrow(CONDITION, ::dev::solidity::UnimplementedFeatureError, DESCRIPTION)
+
+#define solUnimplemented(DESCRIPTION) \
+        solUnimplementedAssert(false, DESCRIPTION)
+
+class Error: virtual public Exception
+{
+public:
+	enum class Type
+	{
+		DeclarationError,
+		DocstringParsingError,
+		ParserError,
+		TypeError,
+		SyntaxError,
+		Warning
+	};
+
+	explicit Error(
+		Type _type,
+		SourceLocation const& _location = SourceLocation(),
+		std::string const& _description = std::string()
+	);
+
+	Error(Type _type, std::string const& _description, SourceLocation const& _location = SourceLocation());
+
+	Type type() const { return m_type; }
+	std::string const& typeName() const { return m_typeName; }
+
+	/// helper functions
+	static Error const* containsErrorOfType(ErrorList const& _list, Error::Type _type)
+	{
+		for (auto e: _list)
+		{
+			if (e->type() == _type)
+				return e.get();
+		}
+		return nullptr;
+	}
+	static bool containsOnlyWarnings(ErrorList const& _list)
+	{
+		for (auto e: _list)
+		{
+			if (e->type() != Type::Warning)
+				return false;
+		}
+		return true;
+	}
+private:
+	Type m_type;
+	std::string m_typeName;
+};
+
+
+using errorSourceLocationInfo = std::pair<std::string, SourceLocation>;
+
+class SecondarySourceLocation
+{
+public:
+	SecondarySourceLocation& append(std::string const& _errMsg, SourceLocation const& _sourceLocation)
+	{
+		infos.push_back(std::make_pair(_errMsg, _sourceLocation));
+		return *this;
+	}
+	/// Limits the number of secondary source locations to 32 and appends a notice to the
+	/// error message.
+	void limitSize(std::string& _message)
+	{
+		size_t occurrences = infos.size();
+		if (occurrences > 32)
+		{
+			infos.resize(32);
+			_message += " Truncated from " + std::to_string(occurrences) + " to the first 32 occurrences.";
+		}
+	}
+
+	std::vector<errorSourceLocationInfo> infos;
+};
+
+
+using errinfo_sourceLocation = boost::error_info<struct tag_sourceLocation, SourceLocation>;
+using errinfo_secondarySourceLocation = boost::error_info<struct tag_secondarySourceLocation, SecondarySourceLocation>;
+
+}
+}