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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/>.
*/
/**
* Unit tests for the expression breaker.
*/
#include <test/libjulia/Common.h>
#include <libjulia/optimiser/ExpressionBreaker.h>
#include <libjulia/optimiser/NameCollector.h>
#include <libsolidity/inlineasm/AsmPrinter.h>
#include <boost/test/unit_test.hpp>
#include <boost/range/adaptors.hpp>
#include <boost/algorithm/string/join.hpp>
using namespace std;
using namespace dev;
using namespace dev::julia;
using namespace dev::julia::test;
using namespace dev::solidity;
#define CHECK(_original, _expectation)\
do\
{\
auto result = parse(_original, false);\
NameDispenser nameDispenser;\
nameDispenser.m_usedNames = NameCollector(*result.first).names();\
ExpressionBreaker{nameDispenser}(*result.first);\
BOOST_CHECK_EQUAL(assembly::AsmPrinter{}(*result.first), format(_expectation, false));\
}\
while(false)
BOOST_AUTO_TEST_SUITE(YulExpressionBreaker)
BOOST_AUTO_TEST_CASE(smoke_test)
{
CHECK("{ }", "{ }");
}
BOOST_AUTO_TEST_CASE(trivial)
{
CHECK(
"{ mstore(add(calldataload(2), mload(3)), 8) }",
"{ let _1 := mload(3) let _2 := calldataload(2) let _3 := add(_2, _1) mstore(_3, 8) }"
);
}
BOOST_AUTO_TEST_CASE(control_flow)
{
string input = R"({
let x := calldataload(0)
if mul(add(x, 2), 3) {
for { let a := 2 } lt(a, mload(a)) { a := add(a, mul(a, 2)) } {
let b := mul(add(a, 2), 4)
sstore(b, mul(b, 2))
}
}
})";
string expectation = R"({
let x := calldataload(0)
let _1 := add(x, 2)
let _2 := mul(_1, 3)
if _2
{
for { let a := 2 } lt(a, mload(a))
{
let _3 := mul(a, 2)
a := add(a, _3)
}
{
let _4 := add(a, 2)
let b := mul(_4, 4)
let _5 := mul(b, 2)
sstore(b, _5)
}
}
})";
CHECK(input, expectation);
}
BOOST_AUTO_TEST_CASE(switch_)
{
string input = R"({
let x := 8
switch add(2, calldataload(0))
case 0 { sstore(0, mload(2)) }
default { mstore(0, mload(3)) }
x := add(mload(3), 4)
})";
string expectation = R"({
let x := 8
let _1 := calldataload(0)
let _2 := add(2, _1)
switch _2
case 0 {
let _3 := mload(2)
sstore(0, _3)
}
default {
let _4 := mload(3)
mstore(0, _4)
}
let _5 := mload(3)
x := add(_5, 4)
})";
CHECK(input, expectation);
}
BOOST_AUTO_TEST_CASE(inside_function)
{
string input = R"({
let x := mul(f(0, mload(7)), 3)
function f(a, b) -> c {
c := mul(a, mload(add(b, c)))
}
sstore(x, f(mload(2), mload(2)))
})";
string expectation = R"({
let _1 := mload(7)
let _2 := f(0, _1)
let x := mul(_2, 3)
function f(a, b) -> c
{
let _3 := add(b, c)
let _4 := mload(_3)
c := mul(a, _4)
}
let _5 := mload(2)
let _6 := mload(2)
let _7 := f(_6, _5)
sstore(x, _7)
})";
CHECK(input, expectation);
}
BOOST_AUTO_TEST_SUITE_END()
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