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FunctionCallGraph.cpp
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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/>.
*/
// SPDX-License-Identifier: GPL-3.0
/// Unit tests for libsolidity/analysis/FunctionCallGraph.h
#include <libsolidity/analysis/FunctionCallGraph.h>
#include <test/Common.h>
#include <test/libsolidity/util/SoltestErrors.h>
#include <libsolutil/CommonData.h>
#include <libsolidity/ast/AST.h>
#include <libsolidity/interface/CompilerStack.h>
#include <boost/test/unit_test.hpp>
#include <range/v3/action/sort.hpp>
#include <range/v3/algorithm/all_of.hpp>
#include <range/v3/range/conversion.hpp>
#include <range/v3/view/join.hpp>
#include <range/v3/view/map.hpp>
#include <range/v3/view/remove_if.hpp>
#include <range/v3/view/set_algorithm.hpp>
#include <range/v3/view/transform.hpp>
#include <memory>
#include <ostream>
#include <set>
#include <string>
#include <tuple>
#include <vector>
using namespace solidity::util;
using namespace solidity::langutil;
using namespace solidity::frontend;
using namespace std::string_literals;
using EdgeMap = std::map<
CallGraph::Node,
std::set<CallGraph::Node, CallGraph::CompareByID>,
CallGraph::CompareByID
>;
using EdgeNames = std::set<std::tuple<std::string, std::string>>;
using CallGraphMap = std::map<std::string, CallGraph const*>;
namespace
{
std::unique_ptr<CompilerStack> parseAndAnalyzeContracts(std::string _sourceCode)
{
ReadCallback::Callback fileReader = [](std::string const&, std::string const&)
{
soltestAssert(false, "For simplicity this test suite supports only files without imports.");
return ReadCallback::Result{true, ""};
};
auto compilerStack = std::make_unique<CompilerStack>(fileReader);
compilerStack->setSources({{"", _sourceCode}});
// NOTE: The code in test cases is expected to be correct so we can keep error handling simple
// here and just assert that there are no errors.
bool success = compilerStack->parseAndAnalyze();
soltestAssert(success, "");
soltestAssert(
ranges::all_of(
compilerStack->ast("").nodes(),
[](auto const& _node){ return !dynamic_cast<ImportDirective const*>(_node.get()); }
),
"For simplicity this test suite supports only files without imports."
);
return compilerStack;
}
EdgeNames edgeNames(EdgeMap const& _edgeMap)
{
EdgeNames names;
for (auto const& [edgeStart, allEnds]: _edgeMap)
for (auto const& edgeEnd: allEnds)
names.emplace(toString(edgeStart), toString(edgeEnd));
return names;
}
std::tuple<CallGraphMap, CallGraphMap> collectGraphs(CompilerStack const& _compilerStack)
{
soltestAssert(_compilerStack.state() >= CompilerStack::State::AnalysisSuccessful);
std::tuple<CallGraphMap, CallGraphMap> graphs;
for (std::string const& fullyQualifiedContractName: _compilerStack.contractNames())
{
soltestAssert(std::get<0>(graphs).count(fullyQualifiedContractName) == 0 && std::get<1>(graphs).count(fullyQualifiedContractName) == 0, "");
// This relies on two assumptions: (1) CompilerStack received an empty string as a path for
// the contract and (2) contracts used in test cases have no imports.
soltestAssert(fullyQualifiedContractName.size() > 0 && fullyQualifiedContractName[0] == ':', "");
std::string contractName = fullyQualifiedContractName.substr(1);
std::get<0>(graphs).emplace(contractName, _compilerStack.contractDefinition(fullyQualifiedContractName).annotation().creationCallGraph->get());
std::get<1>(graphs).emplace(contractName, _compilerStack.contractDefinition(fullyQualifiedContractName).annotation().deployedCallGraph->get());
}
return graphs;
}
void checkCallGraphExpectations(
CallGraphMap const& _callGraphs,
std::map<std::string, EdgeNames> const& _expectedEdges,
std::map<std::string, std::set<std::string>> const& _expectedCreatedContractSets = {},
std::map<std::string, std::set<std::string>> const& _expectedEmittedEventSets = {}
)
{
auto getContractName = [](ContractDefinition const* _contract){ return _contract->name(); };
auto eventToString = [](EventDefinition const* _event){ return toString(CallGraph::Node(_event)); };
auto notEmpty = [](std::set<std::string> const& _set){ return !_set.empty(); };
soltestAssert(
(_expectedCreatedContractSets | ranges::views::values | ranges::views::remove_if(notEmpty)).empty(),
"Contracts that are not expected to create other contracts should not be included in _expectedCreatedContractSets."
);
soltestAssert(
(_expectedEdges | ranges::views::keys | ranges::to<std::set>()) == (_callGraphs | ranges::views::keys | ranges::to<std::set>()) &&
(ranges::views::set_difference(_expectedCreatedContractSets | ranges::views::keys, _expectedEdges | ranges::views::keys)).empty(),
"Contracts listed in expectations do not match contracts actually found in the source file or in other expectations."
);
for (std::string const& contractName: _expectedEdges | ranges::views::keys)
{
soltestAssert(
(ranges::views::set_difference(valueOrDefault(_expectedCreatedContractSets, contractName, {}), _expectedEdges | ranges::views::keys)).empty(),
"Inconsistent expectations: contract expected to be created but not to be present in the source file."
);
}
std::map<std::string, EdgeNames> edges;
std::map<std::string, std::set<std::string>> createdContractSets;
std::map<std::string, std::set<std::string>> emittedEventSets;
for (std::string const& contractName: _expectedEdges | ranges::views::keys)
{
soltestAssert(_callGraphs.at(contractName) != nullptr, "");
CallGraph const& callGraph = *_callGraphs.at(contractName);
edges[contractName] = edgeNames(callGraph.edges);
if (!callGraph.bytecodeDependency.empty())
createdContractSets[contractName] = callGraph.bytecodeDependency |
ranges::views::keys |
ranges::views::transform(getContractName) |
ranges::to<std::set<std::string>>();
if (!callGraph.emittedEvents.empty())
emittedEventSets[contractName] = callGraph.emittedEvents |
ranges::views::transform(eventToString) |
ranges::to<std::set<std::string>>();
}
BOOST_CHECK_EQUAL(edges, _expectedEdges);
BOOST_CHECK_EQUAL(createdContractSets, _expectedCreatedContractSets);
BOOST_CHECK_EQUAL(emittedEventSets, _expectedEmittedEventSets);
}
std::ostream& operator<<(std::ostream& _out, EdgeNames const& _edgeNames)
{
for (auto const& [from, to]: _edgeNames)
_out << " " << from << " -> " << to << std::endl;
return _out;
}
std::ostream& operator<<(std::ostream& _out, std::set<std::string> const& _set)
{
_out << "{" << (_set | ranges::views::join(", ") | ranges::to<std::string>()) << "}";
return _out;
}
std::ostream& operator<<(std::ostream& _out, std::map<std::string, EdgeNames> const& _edgeSets)
{
// Extra newline for error report readability. Otherwise the first line does not start at the first column.
_out << std::endl;
for (auto const &[contractName, edges]: _edgeSets)
{
_out << contractName << ":" << std::endl;
_out << edges;
}
return _out;
}
std::ostream& operator<<(std::ostream& _out, std::map<std::string, std::set<std::string>> const& _map)
{
// Extra newline for error report readability. Otherwise the first line does not start at the first column.
_out << std::endl;
for (auto const &[key, value]: _map)
_out << key << ": " << value << std::endl;
return _out;
}
} // namespace
namespace boost::test_tools::tt_detail
{
// Boost won't find the << operator unless we put it in the std namespace which is illegal.
// The recommended solution is to overload print_log_value<> struct and make it use our operator.
template<>
struct print_log_value<EdgeNames>
{
void operator()(std::ostream& _output, EdgeNames const& _edgeNames) { ::operator<<(_output, _edgeNames); }
};
template<>
struct print_log_value<std::set<std::string>>
{
void operator()(std::ostream& _output, std::set<std::string> const& _set) { ::operator<<(_output, _set); }
};
template<>
struct print_log_value<std::map<std::string, EdgeNames>>
{
void operator()(std::ostream& _output, std::map<std::string, EdgeNames> const& _edgeSets) { ::operator<<(_output, _edgeSets); }
};
template<>
struct print_log_value<std::map<std::string, std::set<std::string>>>
{
void operator()(std::ostream& _output, std::map<std::string, std::set<std::string>> const& _map) { ::operator<<(_output, _map); }
};
} // namespace boost::test_tools::tt_detail
namespace solidity::frontend::test
{
BOOST_AUTO_TEST_SUITE(FunctionCallGraphTest)
BOOST_AUTO_TEST_CASE(only_definitions)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
function free() {}
library L {
function ext() external {}
function pub() public {}
function inr() internal {}
function prv() private {}
}
contract C {
function ext() external {}
function pub() public {}
function inr() internal {}
function prv() private {}
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {}},
{"L", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.ext()"},
{"Entry", "function C.pub()"},
}},
{"L", {
{"Entry", "function L.ext()"},
{"Entry", "function L.pub()"},
}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges);
}
BOOST_AUTO_TEST_CASE(ordinary_calls)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
function free() {}
library L {
function ext() external { pub(); inr(); }
function pub() public { inr(); }
function inr() internal { prv(); }
function prv() private { free(); free(); }
}
contract C {
function ext() external { pub(); }
function pub() public { inr(); prv(); free(); }
function inr() internal { prv(); L.inr(); }
function prv() private { free(); free(); }
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {}},
{"L", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.ext()"},
{"Entry", "function C.pub()"},
{"function C.ext()", "function C.pub()"},
{"function C.pub()", "function C.inr()"},
{"function C.pub()", "function C.prv()"},
{"function C.pub()", "function free()"},
{"function C.inr()", "function C.prv()"},
{"function C.inr()", "function L.inr()"},
{"function C.prv()", "function free()"},
{"function L.inr()", "function L.prv()"},
{"function L.prv()", "function free()"},
}},
{"L", {
{"Entry", "function L.ext()"},
{"Entry", "function L.pub()"},
{"function L.ext()", "function L.pub()"},
{"function L.ext()", "function L.inr()"},
{"function L.pub()", "function L.inr()"},
{"function L.inr()", "function L.prv()"},
{"function L.prv()", "function free()"},
}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges);
}
BOOST_AUTO_TEST_CASE(call_chains_through_externals)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
library L {
function ext() external { C(address(0x0)).ext(); }
function pub() public {}
function inr() internal {}
function prv() private {}
}
contract C {
function ext() external {}
function pub() public {}
function inr() internal {}
function prv() private {}
function ext2() external { this.ext(); this.pub(); L.ext(); L.pub(); }
function pub2() public { this.ext(); this.pub(); L.ext(); L.pub(); }
function pub3() public { C(address(0x0)).ext(); }
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {}},
{"L", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.ext()"},
{"Entry", "function C.ext2()"},
{"Entry", "function C.pub()"},
{"Entry", "function C.pub2()"},
{"Entry", "function C.pub3()"},
}},
{"L", {
{"Entry", "function L.ext()"},
{"Entry", "function L.pub()"},
}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges);
}
BOOST_AUTO_TEST_CASE(calls_from_constructors)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
function free() returns (uint) {}
library L {
function ext() external {}
}
contract C {
constructor() { this.ext(); inr(); L.ext(); free(); }
function ext() external {}
function inr() internal {}
}
contract D {
uint a = this.ext();
uint b = inr();
uint c = free();
function ext() external returns (uint) {}
function inr() internal returns (uint) {}
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {
{"Entry", "constructor of C"},
{"constructor of C", "function C.inr()"},
{"constructor of C", "function free()"},
}},
{"D", {
{"Entry", "function D.inr()"},
{"Entry", "function free()"},
}},
{"L", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.ext()"},
}},
{"D", {
{"Entry", "function D.ext()"},
}},
{"L", {
{"Entry", "function L.ext()"},
}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges);
}
BOOST_AUTO_TEST_CASE(calls_to_constructors)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
function free() { new D(); }
library L {
function ext() external { new C(); new D(); inr(); }
function inr() internal { new C(); new D(); free(); }
}
contract C {
constructor() { new D(); }
function ext() external { new D(); inr(); }
function inr() internal { new D(); free(); }
}
contract D {}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {
{"Entry", "constructor of C"},
}},
{"D", {}},
{"L", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.ext()"},
{"function C.ext()", "function C.inr()"},
{"function C.inr()", "function free()"},
}},
{"D", {}},
{"L", {
{"Entry", "function L.ext()"},
{"function L.ext()", "function L.inr()"},
{"function L.inr()", "function free()"},
}},
};
std::map<std::string, std::set<std::string>> expectedCreatedContractsAtCreation = {
{"C", {"D"}},
};
std::map<std::string, std::set<std::string>> expectedCreatedContractsAfterDeployment = {
{"C", {"D"}},
{"L", {"C", "D"}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges, expectedCreatedContractsAtCreation);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges, expectedCreatedContractsAfterDeployment);
}
BOOST_AUTO_TEST_CASE(inherited_constructors)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
function free() {}
library L {
function ext() external { inr(); }
function inr() internal { free(); }
}
contract C {
constructor() { inrC(); free(); }
function extC() external returns (uint) { inrC(); }
function inrC() internal returns (uint) { free(); }
}
contract D {
constructor() { L.ext(); }
}
contract E is C {
uint e2 = this.extE();
uint i2 = inrE();
function extE() external returns (uint) { inrE(); }
function inrE() internal returns (uint) { free(); }
}
contract F is C, D(), E {
uint e3 = this.extF();
uint i3 = inrF();
constructor() E() C() {}
function extF() external returns (uint) { inrF(); }
function inrF() internal returns (uint) { free(); }
}
contract G is E() {
function extG() external returns (uint) { new F(); }
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {
{"Entry", "constructor of C"},
{"constructor of C", "function C.inrC()"},
{"constructor of C", "function free()"},
{"function C.inrC()", "function free()"},
}},
{"D", {
{"Entry", "constructor of D"},
}},
{"E", {
{"Entry", "constructor of C"},
{"Entry", "function E.inrE()"},
{"constructor of C", "function C.inrC()"},
{"constructor of C", "function free()"},
{"function C.inrC()", "function free()"},
{"function E.inrE()", "function free()"},
}},
{"F", {
{"Entry", "constructor of C"},
{"Entry", "constructor of D"},
{"Entry", "constructor of F"},
{"Entry", "function E.inrE()"},
{"Entry", "function F.inrF()"},
{"constructor of C", "function C.inrC()"},
{"constructor of C", "function free()"},
{"function C.inrC()", "function free()"},
{"function E.inrE()", "function free()"},
{"function F.inrF()", "function free()"},
}},
{"G", {
{"Entry", "constructor of C"},
{"Entry", "function E.inrE()"},
{"constructor of C", "function C.inrC()"},
{"constructor of C", "function free()"},
{"function C.inrC()", "function free()"},
{"function E.inrE()", "function free()"},
}},
{"L", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.extC()"},
{"function C.extC()", "function C.inrC()"},
{"function C.inrC()", "function free()"},
}},
{"D", {}},
{"E", {
{"Entry", "function C.extC()"},
{"Entry", "function E.extE()"},
{"function C.extC()", "function C.inrC()"},
{"function E.extE()", "function E.inrE()"},
{"function C.inrC()", "function free()"},
{"function E.inrE()", "function free()"},
}},
{"F", {
{"Entry", "function C.extC()"},
{"Entry", "function E.extE()"},
{"Entry", "function F.extF()"},
{"function C.extC()", "function C.inrC()"},
{"function E.extE()", "function E.inrE()"},
{"function F.extF()", "function F.inrF()"},
{"function C.inrC()", "function free()"},
{"function E.inrE()", "function free()"},
{"function F.inrF()", "function free()"},
}},
{"G", {
{"Entry", "function C.extC()"},
{"Entry", "function E.extE()"},
{"Entry", "function G.extG()"},
{"function C.extC()", "function C.inrC()"},
{"function E.extE()", "function E.inrE()"},
{"function C.inrC()", "function free()"},
{"function E.inrE()", "function free()"},
}},
{"L", {
{"Entry", "function L.ext()"},
{"function L.ext()", "function L.inr()"},
{"function L.inr()", "function free()"},
}},
};
std::map<std::string, std::set<std::string>> expectedCreatedContractsAtCreation = {};
std::map<std::string, std::set<std::string>> expectedCreatedContractsAfterDeployment = {
{"G", {"F"}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges, expectedCreatedContractsAtCreation);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges, expectedCreatedContractsAfterDeployment);
}
BOOST_AUTO_TEST_CASE(inheritance_specifiers)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
function fD() returns (uint) {}
function fE() returns (uint) {}
function fFD() returns (uint) {}
function fFE() returns (uint) {}
function fG() returns (uint) {}
function fVarC() returns (uint) {}
function fVarD() returns (uint) {}
function fVarE() returns (uint) {}
function fVarF() returns (uint) {}
contract C {
uint c = fVarC();
constructor (uint) {}
}
contract D is C(fD()) {
uint d = fVarD();
constructor (uint) {}
}
abstract contract E is C {
uint e = fVarE();
constructor (uint) {}
}
contract F is D(fFD()), E {
uint f = fVarF();
constructor (uint) E(fFE()) {}
}
contract G is D(fG()), E(fG()) {}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {
{"Entry", "constructor of C"},
{"Entry", "function fVarC()"},
}},
{"D", {
{"Entry", "constructor of C"},
{"Entry", "constructor of D"},
{"Entry", "function fVarC()"},
{"Entry", "function fVarD()"},
{"constructor of D", "function fD()"},
}},
{"E", {
{"Entry", "constructor of C"},
{"Entry", "constructor of E"},
{"Entry", "function fVarC()"},
{"Entry", "function fVarE()"},
}},
{"F", {
{"Entry", "constructor of C"},
{"Entry", "constructor of D"},
{"Entry", "constructor of E"},
{"Entry", "constructor of F"},
{"Entry", "function fVarC()"},
{"Entry", "function fVarD()"},
{"Entry", "function fVarE()"},
{"Entry", "function fVarF()"},
{"constructor of D", "function fD()"},
{"constructor of F", "function fFD()"},
{"constructor of F", "function fFE()"},
}},
{"G", {
{"Entry", "constructor of C"},
{"Entry", "constructor of D"},
{"Entry", "constructor of E"},
// G, unlike F, has no constructor so fG() gets an edge from Entry.
{"Entry", "function fG()"},
{"Entry", "function fVarC()"},
{"Entry", "function fVarD()"},
{"Entry", "function fVarE()"},
{"constructor of D", "function fD()"},
}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {}},
{"D", {}},
{"E", {}},
{"F", {}},
{"G", {}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges);
}
BOOST_AUTO_TEST_CASE(inherited_functions_virtual_and_super)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
contract C {
function f() internal {}
function g() internal virtual {}
function h() internal virtual {}
function ext() external virtual {}
}
contract D {
function h() internal virtual {}
function ext() external virtual {}
}
contract E is C, D {
function g() internal override {}
function h() internal override(C, D) {}
function i() internal {}
function ext() external override(C, D) {}
function callF() external { f(); }
function callG() external { g(); }
function callH() external { h(); }
function callI() external { i(); }
function callCF() external { C.f(); }
function callCG() external { C.g(); }
function callCH() external { C.h(); }
function callDH() external { D.h(); }
function callEI() external { E.i(); }
function callSuperF() external { super.f(); }
function callSuperG() external { super.g(); }
function callSuperH() external { super.h(); }
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {}},
{"D", {}},
{"E", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.ext()"},
}},
{"D", {
{"Entry", "function D.ext()"},
}},
{"E", {
{"Entry", "function E.callF()"},
{"Entry", "function E.callG()"},
{"Entry", "function E.callH()"},
{"Entry", "function E.callI()"},
{"Entry", "function E.callCF()"},
{"Entry", "function E.callCG()"},
{"Entry", "function E.callCH()"},
{"Entry", "function E.callDH()"},
{"Entry", "function E.callEI()"},
{"Entry", "function E.callSuperF()"},
{"Entry", "function E.callSuperG()"},
{"Entry", "function E.callSuperH()"},
{"Entry", "function E.ext()"},
{"function E.callF()", "function C.f()"},
{"function E.callG()", "function E.g()"},
{"function E.callH()", "function E.h()"},
{"function E.callI()", "function E.i()"},
{"function E.callCF()", "function C.f()"},
{"function E.callCG()", "function C.g()"},
{"function E.callCH()", "function C.h()"},
{"function E.callDH()", "function D.h()"},
{"function E.callEI()", "function E.i()"},
{"function E.callSuperF()", "function C.f()"},
{"function E.callSuperG()", "function C.g()"},
{"function E.callSuperH()", "function D.h()"},
}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges);
}
BOOST_AUTO_TEST_CASE(overloaded_functions)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
enum E {E1, E2, E3}
function free() {}
function free(uint) {}
function free(bytes memory) {}
function free(E) {}
contract C {
function f(E) internal {}
function f(bool) external {}
}
contract D is C {
function ext1() external { free(); free(123); free("123"); }
function ext2() external { f(); f(123); f("123"); }
function ext3() external { free(E.E2); f(E.E2); }
function ext4() external { this.f(false); }
function f() internal {}
function f(uint) internal {}
function f(bytes memory) internal {}
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {}},
{"D", {}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {
{"Entry", "function C.f(bool)"},
}},
{"D", {
{"Entry", "function C.f(bool)"},
{"Entry", "function D.ext1()"},
{"Entry", "function D.ext2()"},
{"Entry", "function D.ext3()"},
{"Entry", "function D.ext4()"},
{"function D.ext1()", "function free()"},
{"function D.ext1()", "function free(uint256)"},
{"function D.ext1()", "function free(bytes)"},
{"function D.ext2()", "function D.f()"},
{"function D.ext2()", "function D.f(uint256)"},
{"function D.ext2()", "function D.f(bytes)"},
{"function D.ext3()", "function free(enum E)"},
{"function D.ext3()", "function C.f(enum E)"},
}},
};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges);
}
BOOST_AUTO_TEST_CASE(modifiers)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
library L {
modifier m() { g(); _; }
function f() m internal {}
function g() internal {}
}
contract C {
modifier m1() virtual { _; }
function q() m1 internal virtual { L.f(); }
}
contract D is C {
modifier m2() { q(); _; new C(); }
function p() m2 internal { C.q(); }
function q() m2 internal override virtual {}
}
contract E is D {
modifier m1() override { _; }
modifier m3() { p(); _; }
constructor() D() m1 E.m3 {}
function ext() external m1 E.m3 { inr(); }
function inr() internal m1 E.m3 { L.f(); }
function q() internal override {}
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);
std::map<std::string, EdgeNames> expectedCreationEdges = {
{"C", {}},
{"D", {}},
{"L", {}},
{"E", {
{"Entry", "constructor of E"},
{"constructor of E", "modifier E.m1"},
{"constructor of E", "modifier E.m3"},
{"function C.q()", "modifier E.m1"},
{"function C.q()", "function L.f()"},
{"function D.p()", "modifier D.m2"},
{"function D.p()", "function C.q()"},
{"function L.f()", "modifier L.m"},
{"modifier L.m", "function L.g()"},
{"modifier D.m2", "function E.q()"},
{"modifier E.m3", "function D.p()"},
}},
};
std::map<std::string, EdgeNames> expectedDeployedEdges = {
{"C", {}},
{"D", {}},
{"L", {}},
{"E", {
{"Entry", "function E.ext()"},
{"function C.q()", "modifier E.m1"},
{"function C.q()", "function L.f()"},
{"function D.p()", "modifier D.m2"},
{"function D.p()", "function C.q()"},
{"function L.f()", "modifier L.m"},
{"function E.ext()", "function E.inr()"},
{"function E.ext()", "modifier E.m1"},
{"function E.ext()", "modifier E.m3"},
{"function E.inr()", "modifier E.m1"},
{"function E.inr()", "modifier E.m3"},
{"function E.inr()", "function L.f()"},
{"modifier L.m", "function L.g()"},
{"modifier D.m2", "function E.q()"},
{"modifier E.m3", "function D.p()"},
}},
};
std::map<std::string, std::set<std::string>> expectedCreatedContractsAtCreation = {{"E", {"C"}}};
std::map<std::string, std::set<std::string>> expectedCreatedContractsAfterDeployment = {{"E", {"C"}}};
checkCallGraphExpectations(std::get<0>(graphs), expectedCreationEdges, expectedCreatedContractsAtCreation);
checkCallGraphExpectations(std::get<1>(graphs), expectedDeployedEdges, expectedCreatedContractsAfterDeployment);
}
BOOST_AUTO_TEST_CASE(events)
{
std::unique_ptr<CompilerStack> compilerStack = parseAndAnalyzeContracts(R"(
function free() { emit L.Ev(); }
library L {
event Ev();
event Ev(bytes4, string indexed);
function ext() external { emit Ev(); }
function inr() internal { emit Ev(0x12345678, "a"); emit L.Ev(); }
}
contract C {
event EvC(uint) anonymous;
modifier m() { emit EvC(1); _; }
}
contract D is C {
event EvD1(uint);
event EvD2(uint);
function ext() m external { emit D.EvD1(1); emit EvC(f()); inr(); }
function inr() m internal { emit EvD1(1); emit C.EvC(f()); L.inr(); free(); EvD2; }
function f() internal returns (uint) {}
}
)"s);
std::tuple<CallGraphMap, CallGraphMap> graphs = collectGraphs(*compilerStack);