Refactoring: Check types outside of AST and recover from some errors.

libsolidity/ReferencesResolver.h

@@ -0,0 +1,69 @@
+/*
+    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/>.
+*/
+/**
+ * @author Christian <c@ethdev.com>
+ * @date 2014
+ * Component that resolves type names to types and annotates the AST accordingly.
+ */
+
+#pragma once
+
+#include <map>
+#include <list>
+#include <boost/noncopyable.hpp>
+#include <libsolidity/ASTVisitor.h>
+#include <libsolidity/ASTAnnotations.h>
+
+namespace dev
+{
+namespace solidity
+{
+
+class NameAndTypeResolver;
+
+/**
+ * Resolves references to declarations (of variables and types) and also establishes the link
+ * between a return statement and the return parameter list.
+ */
+class ReferencesResolver: private ASTConstVisitor
+{
+public:
+	ReferencesResolver(
+		ASTNode& _root,
+		NameAndTypeResolver& _resolver,
+		ContractDefinition const* _currentContract,
+		ParameterList const* _returnParameters,
+		bool _resolveInsideCode = false
+	);
+
+private:
+	virtual bool visit(Block const&) override { return m_resolveInsideCode; }
+	virtual bool visit(Identifier const& _identifier) override;
+	virtual bool visit(UserDefinedTypeName const& _typeName) override;
+	virtual bool visit(Return const& _return) override;
+	virtual void endVisit(VariableDeclaration const& _variable) override;
+
+	TypePointer typeFor(TypeName const& _typeName);
+
+	NameAndTypeResolver& m_resolver;
+	ContractDefinition const* m_currentContract;
+	ParameterList const* m_returnParameters;
+	bool m_resolveInsideCode;
+};
+
+}
+}