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248 lines
8.5 KiB
248 lines
8.5 KiB
/*
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This file is part of cpp-ethereum.
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cpp-ethereum is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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cpp-ethereum is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @author Christian <c@ethdev.com>
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* @date 2014
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* Unit tests for the solidity compiler.
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*/
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#include <string>
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#include <iostream>
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#include <boost/test/unit_test.hpp>
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#include <libdevcore/Log.h>
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#include <libsolidity/Scanner.h>
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#include <libsolidity/Parser.h>
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#include <libsolidity/NameAndTypeResolver.h>
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#include <libsolidity/Compiler.h>
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#include <libsolidity/AST.h>
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using namespace std;
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using namespace dev::eth;
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namespace dev
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{
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namespace solidity
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{
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namespace test
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{
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namespace
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{
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bytes compileContract(const string& _sourceCode)
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{
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Parser parser;
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ASTPointer<SourceUnit> sourceUnit;
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BOOST_REQUIRE_NO_THROW(sourceUnit = parser.parse(make_shared<Scanner>(CharStream(_sourceCode))));
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NameAndTypeResolver resolver({});
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resolver.registerDeclarations(*sourceUnit);
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for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
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if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
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{
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BOOST_REQUIRE_NO_THROW(resolver.resolveNamesAndTypes(*contract));
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}
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for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
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if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
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{
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BOOST_REQUIRE_NO_THROW(resolver.checkTypeRequirements(*contract));
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}
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for (ASTPointer<ASTNode> const& node: sourceUnit->getNodes())
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if (ContractDefinition* contract = dynamic_cast<ContractDefinition*>(node.get()))
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{
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Compiler compiler;
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compiler.compileContract(*contract, {}, map<ContractDefinition const*, bytes const*>{});
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// debug
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//compiler.streamAssembly(cout);
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return compiler.getAssembledBytecode();
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}
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BOOST_FAIL("No contract found in source.");
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return bytes();
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}
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/// Checks that @a _compiledCode is present starting from offset @a _offset in @a _expectation.
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/// This is necessary since the compiler will add boilerplate add the beginning that is not
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/// tested here.
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void checkCodePresentAt(bytes const& _compiledCode, bytes const& _expectation, unsigned _offset)
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{
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BOOST_REQUIRE(_compiledCode.size() >= _offset + _expectation.size());
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auto checkStart = _compiledCode.begin() + _offset;
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BOOST_CHECK_EQUAL_COLLECTIONS(checkStart, checkStart + _expectation.size(),
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_expectation.begin(), _expectation.end());
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}
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} // end anonymous namespace
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BOOST_AUTO_TEST_SUITE(SolidityCompiler)
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BOOST_AUTO_TEST_CASE(smoke_test)
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{
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char const* sourceCode = "contract test {\n"
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" function f() { var x = 2; }\n"
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"}\n";
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bytes code = compileContract(sourceCode);
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unsigned boilerplateSize = 40;
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bytes expectation({byte(Instruction::JUMPDEST),
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byte(Instruction::PUSH1), 0x0, // initialize local variable x
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byte(Instruction::PUSH1), 0x2,
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byte(Instruction::SWAP1),
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byte(Instruction::POP),
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byte(Instruction::JUMPDEST),
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byte(Instruction::POP),
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byte(Instruction::JUMP)});
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checkCodePresentAt(code, expectation, boilerplateSize);
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}
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BOOST_AUTO_TEST_CASE(different_argument_numbers)
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{
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char const* sourceCode = "contract test {\n"
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" function f(uint a, uint b, uint c) returns(uint d) { return b; }\n"
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" function g() returns (uint e, uint h) { h = f(1, 2, 3); }\n"
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"}\n";
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bytes code = compileContract(sourceCode);
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unsigned shift = 68;
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unsigned boilerplateSize = 81;
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bytes expectation({byte(Instruction::JUMPDEST),
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byte(Instruction::PUSH1), 0x0, // initialize return variable d
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byte(Instruction::DUP3),
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byte(Instruction::SWAP1), // assign b to d
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byte(Instruction::POP),
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byte(Instruction::PUSH1), byte(0xa + shift), // jump to return
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byte(Instruction::JUMP),
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byte(Instruction::JUMPDEST),
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byte(Instruction::SWAP4), // store d and fetch return address
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byte(Instruction::SWAP3), // store return address
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byte(Instruction::POP),
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byte(Instruction::POP),
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byte(Instruction::POP),
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byte(Instruction::JUMP), // end of f
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byte(Instruction::JUMPDEST), // beginning of g
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byte(Instruction::PUSH1), 0x0,
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byte(Instruction::PUSH1), 0x0, // initialized e and h
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byte(Instruction::PUSH1), byte(0x2a + shift), // ret address
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byte(Instruction::PUSH1), 0x1, byte(Instruction::PUSH1), 0xff, byte(Instruction::AND),
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byte(Instruction::PUSH1), 0x2, byte(Instruction::PUSH1), 0xff, byte(Instruction::AND),
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byte(Instruction::PUSH1), 0x3, byte(Instruction::PUSH1), 0xff, byte(Instruction::AND),
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byte(Instruction::PUSH1), byte(0x1 + shift),
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// stack here: ret e h 0x20 1 2 3 0x1
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byte(Instruction::JUMP),
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byte(Instruction::JUMPDEST),
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// stack here: ret e h f(1,2,3)
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byte(Instruction::SWAP1),
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// stack here: ret e f(1,2,3) h
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byte(Instruction::POP),
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byte(Instruction::DUP1), // retrieve it again as "value of expression"
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byte(Instruction::POP), // end of assignment
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// stack here: ret e f(1,2,3)
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byte(Instruction::JUMPDEST),
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byte(Instruction::SWAP1),
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// ret e f(1,2,3)
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byte(Instruction::SWAP2),
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// f(1,2,3) e ret
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byte(Instruction::JUMP) // end of g
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});
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checkCodePresentAt(code, expectation, boilerplateSize);
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}
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BOOST_AUTO_TEST_CASE(ifStatement)
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{
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char const* sourceCode = "contract test {\n"
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" function f() { bool x; if (x) 77; else if (!x) 78; else 79; }"
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"}\n";
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bytes code = compileContract(sourceCode);
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unsigned shift = 27;
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unsigned boilerplateSize = 40;
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bytes expectation({byte(Instruction::JUMPDEST),
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byte(Instruction::PUSH1), 0x0,
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byte(Instruction::DUP1),
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byte(Instruction::PUSH1), byte(0x1b + shift), // "true" target
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byte(Instruction::JUMPI),
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// new check "else if" condition
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byte(Instruction::DUP1),
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byte(Instruction::ISZERO),
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byte(Instruction::PUSH1), byte(0x13 + shift),
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byte(Instruction::JUMPI),
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// "else" body
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byte(Instruction::PUSH1), 0x4f,
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byte(Instruction::POP),
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byte(Instruction::PUSH1), byte(0x17 + shift), // exit path of second part
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byte(Instruction::JUMP),
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// "else if" body
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byte(Instruction::JUMPDEST),
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byte(Instruction::PUSH1), 0x4e,
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byte(Instruction::POP),
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byte(Instruction::JUMPDEST),
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byte(Instruction::PUSH1), byte(0x1f + shift),
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byte(Instruction::JUMP),
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// "if" body
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byte(Instruction::JUMPDEST),
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byte(Instruction::PUSH1), 0x4d,
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byte(Instruction::POP),
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byte(Instruction::JUMPDEST),
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byte(Instruction::JUMPDEST),
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byte(Instruction::POP),
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byte(Instruction::JUMP)});
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checkCodePresentAt(code, expectation, boilerplateSize);
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}
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BOOST_AUTO_TEST_CASE(loops)
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{
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char const* sourceCode = "contract test {\n"
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" function f() { while(true){1;break;2;continue;3;return;4;} }"
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"}\n";
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bytes code = compileContract(sourceCode);
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unsigned shift = 27;
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unsigned boilerplateSize = 40;
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bytes expectation({byte(Instruction::JUMPDEST),
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byte(Instruction::JUMPDEST),
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byte(Instruction::PUSH1), 0x1,
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byte(Instruction::ISZERO),
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byte(Instruction::PUSH1), byte(0x21 + shift),
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byte(Instruction::JUMPI),
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byte(Instruction::PUSH1), 0x1,
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byte(Instruction::POP),
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byte(Instruction::PUSH1), byte(0x21 + shift),
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byte(Instruction::JUMP), // break
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byte(Instruction::PUSH1), 0x2,
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byte(Instruction::POP),
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byte(Instruction::PUSH1), byte(0x2 + shift),
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byte(Instruction::JUMP), // continue
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byte(Instruction::PUSH1), 0x3,
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byte(Instruction::POP),
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byte(Instruction::PUSH1), byte(0x22 + shift),
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byte(Instruction::JUMP), // return
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byte(Instruction::PUSH1), 0x4,
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byte(Instruction::POP),
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byte(Instruction::PUSH1), byte(0x2 + shift),
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byte(Instruction::JUMP),
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byte(Instruction::JUMPDEST),
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byte(Instruction::JUMPDEST),
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byte(Instruction::JUMP)});
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checkCodePresentAt(code, expectation, boilerplateSize);
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}
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BOOST_AUTO_TEST_SUITE_END()
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}
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}
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} // end namespaces
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