Overflow-checked addition.

libsolidity/codegen/ir/IRGeneratorForStatements.h

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+/*
+	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/>.
+*/
+/**
+ * Component that translates Solidity code into Yul at statement level and below.
+ */
+
+#pragma once
+
+#include <libsolidity/ast/ASTVisitor.h>
+
+namespace dev
+{
+namespace solidity
+{
+
+class IRGenerationContext;
+class YulUtilFunctions;
+
+/**
+ * Component that translates Solidity's AST into Yul at statement level and below.
+ * It is an AST visitor that appends to an internal string buffer.
+ */
+class IRGeneratorForStatements: public ASTConstVisitor
+{
+public:
+	IRGeneratorForStatements(IRGenerationContext& _context, YulUtilFunctions& _utils):
+		m_context(_context),
+		m_utils(_utils)
+	{}
+
+	std::string code() const { return m_code.str(); }
+
+	bool visit(VariableDeclarationStatement const& _variableDeclaration) override;
+	bool visit(Assignment const& _assignment) override;
+	void endVisit(BinaryOperation const& _binOp) override;
+	bool visit(Identifier const& _identifier) override;
+
+private:
+	std::ostringstream m_code;
+	IRGenerationContext& m_context;
+	YulUtilFunctions& m_utils;
+};
+
+}
+}