From 9c9a529b9d08e28a000ba537488aad136bfe9789 Mon Sep 17 00:00:00 2001
From: Christian <c@ethdev.com>
Date: Mon, 13 Oct 2014 15:07:21 +0200
Subject: [PATCH] Name resolution.

---
 solidityNameAndTypeResolution.cpp | 113 ++++++++++++++++++++++++++++++
 1 file changed, 113 insertions(+)
 create mode 100644 solidityNameAndTypeResolution.cpp

diff --git a/solidityNameAndTypeResolution.cpp b/solidityNameAndTypeResolution.cpp
new file mode 100644
index 000000000..568025e5a
--- /dev/null
+++ b/solidityNameAndTypeResolution.cpp
@@ -0,0 +1,113 @@
+/*
+    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
+ * Unit tests for the name and type resolution of the solidity parser.
+ */
+
+#include <string>
+
+#include <libdevcore/Log.h>
+#include <libsolidity/Scanner.h>
+#include <libsolidity/Parser.h>
+#include <libsolidity/NameAndTypeResolver.h>
+#include <boost/test/unit_test.hpp>
+
+namespace dev {
+namespace solidity {
+namespace test {
+
+namespace {
+	void parseTextAndResolveNames(const std::string& _source)
+	{
+		Parser parser;
+		ptr<ContractDefinition> contract = parser.parse(
+												std::make_shared<Scanner>(CharStream(_source)));
+		NameAndTypeResolver resolver;
+		resolver.resolveNamesAndTypes(*contract);
+	}
+}
+
+BOOST_AUTO_TEST_SUITE(SolidityNameAndTypeResolution)
+
+BOOST_AUTO_TEST_CASE(smoke_test)
+{
+	char const* text = "contract test {\n"
+					   "  uint256 stateVariable1;\n"
+					   "  function fun(uint256 arg1) { var x = 2; uint256 y = 3; x = 1; }"
+					   "}\n";
+	BOOST_CHECK_NO_THROW(parseTextAndResolveNames(text));
+}
+
+BOOST_AUTO_TEST_CASE(double_stateVariable_declaration)
+{
+	char const* text = "contract test {\n"
+					   "  uint256 variable;\n"
+					   "  uint128 variable;\n"
+					   "}\n";
+	BOOST_CHECK_THROW(parseTextAndResolveNames(text), std::exception);
+}
+
+BOOST_AUTO_TEST_CASE(double_function_declaration)
+{
+	char const* text = "contract test {\n"
+					   "  function fun() { var x = 2; }\n"
+					   "  function fun() { var y = 9; }\n"
+					   "}\n";
+	BOOST_CHECK_THROW(parseTextAndResolveNames(text), std::exception);
+}
+
+BOOST_AUTO_TEST_CASE(double_variable_declaration)
+{
+	char const* text = "contract test {\n"
+					   "  function f() { uint256 x = 9; if (true)  { uint256 x = 2;} x = 3; }\n"
+					   "}\n";
+	BOOST_CHECK_THROW(parseTextAndResolveNames(text), std::exception);
+}
+
+BOOST_AUTO_TEST_CASE(name_shadowing)
+{
+	char const* text = "contract test {\n"
+					   "  uint256 variable;\n"
+					   "  function f() { uint8 variable = 2; }"
+					   "}\n";
+	BOOST_CHECK_NO_THROW(parseTextAndResolveNames(text));
+}
+
+BOOST_AUTO_TEST_CASE(name_references)
+{
+	char const* text = "contract test {\n"
+					   "  uint256 variable;\n"
+					   "  function f() { variable = 2; f(); test; }"
+					   "}\n";
+	BOOST_CHECK_NO_THROW(parseTextAndResolveNames(text));
+}
+
+BOOST_AUTO_TEST_CASE(undeclared_name)
+{
+	char const* text = "contract test {\n"
+					   "  uint256 variable;\n"
+					   "  function f() { notfound = 2; }"
+					   "}\n";
+	BOOST_CHECK_THROW(parseTextAndResolveNames(text), std::exception);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+} } } // end namespaces
+