Merge remote-tracking branch 'ethereum/develop' into sol_overloadingFunctions

1 files changed, 197 insertions, 0 deletions

diff --git a/libsolidity/SolidityCompiler.cpp b/libsolidity/SolidityCompiler.cpp
new file mode 100644
index 00000000..bb16c88c
--- /dev/null
+++ b/libsolidity/SolidityCompiler.cpp
@@ -0,0 +1,197 @@
+/*
+	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 solidity compiler.
+ */
+
+#if ETH_SOLIDITY
+
+#include <string>
+#include <iostream>
+#include <boost/test/unit_test.hpp>
+#include <libdevcore/Log.h>
+#include <libsolidity/Scanner.h>
+#include <libsolidity/Parser.h>
+#include <libsolidity/NameAndTypeResolver.h>
+#include <libsolidity/Compiler.h>
+#include <libsolidity/AST.h>
+
+using namespace std;
+using namespace dev::eth;
+
+namespace dev
+{
+namespace solidity
+{
+namespace test
+{
+
+namespace
+{
+
+bytes compileContract(const string& _sourceCode)
+{
+	Parser parser;
+	ASTPointer<SourceUnit> sourceUnit;
+	BOOST_REQUIRE_NO_THROW(sourceUnit = parser.parse(make_shared<Scanner>(CharStream(_sourceCode))));
+	NameAndTypeResolver resolver({});
+	resolver.registerDeclarations(*sourceUnit);
+	for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
+		if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
+		{
+			BOOST_REQUIRE_NO_THROW(resolver.resolveNamesAndTypes(*contract));
+		}
+	for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
+		if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
+		{
+			BOOST_REQUIRE_NO_THROW(resolver.checkTypeRequirements(*contract));
+		}
+	for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
+		if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
+		{
+			Compiler compiler;
+			compiler.compileContract(*contract, map<ContractDefinition const*, bytes const*>{});
+
+			// debug
+			//compiler.streamAssembly(cout);
+			return compiler.getAssembledBytecode();
+		}
+	BOOST_FAIL("No contract found in source.");
+	return bytes();
+}
+
+/// Checks that @a _compiledCode is present starting from offset @a _offset in @a _expectation.
+/// This is necessary since the compiler will add boilerplate add the beginning that is not
+/// tested here.
+void checkCodePresentAt(bytes const& _compiledCode, bytes const& _expectation, unsigned _offset)
+{
+	BOOST_REQUIRE(_compiledCode.size() >= _offset + _expectation.size());
+	auto checkStart = _compiledCode.begin() + _offset;
+	BOOST_CHECK_EQUAL_COLLECTIONS(checkStart, checkStart + _expectation.size(),
+								  _expectation.begin(), _expectation.end());
+}
+
+} // end anonymous namespace
+
+BOOST_AUTO_TEST_SUITE(SolidityCompiler)
+
+BOOST_AUTO_TEST_CASE(smoke_test)
+{
+	char const* sourceCode = "contract test {\n"
+							 "  function f() { var x = 2; }\n"
+							 "}\n";
+	bytes code = compileContract(sourceCode);
+
+	unsigned boilerplateSize = 70;
+	bytes expectation({byte(Instruction::JUMPDEST),
+					   byte(Instruction::PUSH1), 0x0, // initialize local variable x
+					   byte(Instruction::PUSH1), 0x2,
+					   byte(Instruction::SWAP1),
+					   byte(Instruction::POP),
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::POP),
+					   byte(Instruction::JUMP)});
+	checkCodePresentAt(code, expectation, boilerplateSize);
+}
+
+BOOST_AUTO_TEST_CASE(ifStatement)
+{
+	char const* sourceCode = "contract test {\n"
+							 "  function f() { bool x; if (x) 77; else if (!x) 78; else 79; }"
+							 "}\n";
+	bytes code = compileContract(sourceCode);
+	unsigned shift = 57;
+	unsigned boilerplateSize = 70;
+	bytes expectation({byte(Instruction::JUMPDEST),
+					   byte(Instruction::PUSH1), 0x0,
+					   byte(Instruction::DUP1),
+					   byte(Instruction::PUSH1), byte(0x1b + shift), // "true" target
+					   byte(Instruction::JUMPI),
+					   // new check "else if" condition
+					   byte(Instruction::DUP1),
+					   byte(Instruction::ISZERO),
+					   byte(Instruction::PUSH1), byte(0x13 + shift),
+					   byte(Instruction::JUMPI),
+					   // "else" body
+					   byte(Instruction::PUSH1), 0x4f,
+					   byte(Instruction::POP),
+					   byte(Instruction::PUSH1), byte(0x17 + shift), // exit path of second part
+					   byte(Instruction::JUMP),
+					   // "else if" body
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::PUSH1), 0x4e,
+					   byte(Instruction::POP),
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::PUSH1), byte(0x1f + shift),
+					   byte(Instruction::JUMP),
+					   // "if" body
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::PUSH1), 0x4d,
+					   byte(Instruction::POP),
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::POP),
+					   byte(Instruction::JUMP)});
+	checkCodePresentAt(code, expectation, boilerplateSize);
+}
+
+BOOST_AUTO_TEST_CASE(loops)
+{
+	char const* sourceCode = "contract test {\n"
+							 "  function f() { while(true){1;break;2;continue;3;return;4;} }"
+							 "}\n";
+	bytes code = compileContract(sourceCode);
+	unsigned shift = 57;
+	unsigned boilerplateSize = 70;
+	bytes expectation({byte(Instruction::JUMPDEST),
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::PUSH1), 0x1,
+					   byte(Instruction::ISZERO),
+					   byte(Instruction::PUSH1), byte(0x21 + shift),
+					   byte(Instruction::JUMPI),
+					   byte(Instruction::PUSH1), 0x1,
+					   byte(Instruction::POP),
+					   byte(Instruction::PUSH1), byte(0x21 + shift),
+					   byte(Instruction::JUMP), // break
+					   byte(Instruction::PUSH1), 0x2,
+					   byte(Instruction::POP),
+					   byte(Instruction::PUSH1), byte(0x2 + shift),
+					   byte(Instruction::JUMP), // continue
+					   byte(Instruction::PUSH1), 0x3,
+					   byte(Instruction::POP),
+					   byte(Instruction::PUSH1), byte(0x22 + shift),
+					   byte(Instruction::JUMP), // return
+					   byte(Instruction::PUSH1), 0x4,
+					   byte(Instruction::POP),
+					   byte(Instruction::PUSH1), byte(0x2 + shift),
+					   byte(Instruction::JUMP),
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::JUMPDEST),
+					   byte(Instruction::JUMP)});
+
+	checkCodePresentAt(code, expectation, boilerplateSize);
+}
+
+BOOST_AUTO_TEST_SUITE_END()
+
+}
+}
+} // end namespaces
+
+#endif