mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
ef6ff2f055
Deprecates `block.difficulty` and disallow `difficulty()` in inline assembly for EVM versions >= paris. The change is due to the renaming introduced by EIP-4399 (see: https://eips.ethereum.org/EIPS/eip-4399). Introduces `block.prevrandao` in Solidity and `prevrandao()` in inline assembly for EVM versions >= paris. Co-authored-by: Alex Beregszaszi <alex@rtfs.hu> Co-authored-by: Daniel <daniel@ekpyron.org> Co-authored-by: matheusaaguiar <95899911+matheusaaguiar@users.noreply.github.com> Co-authored-by: Nikola Matić <nikola.matic@ethereum.org>
422 lines
17 KiB
C++
422 lines
17 KiB
C++
/*
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This file is part of solidity.
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solidity 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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solidity 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 solidity. If not, see <http://www.gnu.org/licenses/>.
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*/
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// SPDX-License-Identifier: GPL-3.0
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/**
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* @author Alex Beregszaszi
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* @date 2018
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* Tests for the assembler.
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*/
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#include <test/Common.h>
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#include <libevmasm/Assembly.h>
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#include <libsolutil/JSON.h>
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#include <libevmasm/Disassemble.h>
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#include <libyul/Exceptions.h>
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#include <boost/test/unit_test.hpp>
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#include <algorithm>
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#include <memory>
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#include <string>
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#include <tuple>
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using namespace std;
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using namespace solidity::langutil;
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using namespace solidity::evmasm;
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namespace solidity::frontend::test
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{
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namespace
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{
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void checkCompilation(evmasm::Assembly const& _assembly)
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{
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LinkerObject output = _assembly.assemble();
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BOOST_CHECK(output.bytecode.size() > 0);
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BOOST_CHECK(output.toHex().length() > 0);
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}
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}
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BOOST_AUTO_TEST_SUITE(Assembler)
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BOOST_AUTO_TEST_CASE(all_assembly_items)
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{
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map<string, unsigned> indices = {
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{ "root.asm", 0 },
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{ "sub.asm", 1 },
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{ "verbatim.asm", 2 }
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};
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EVMVersion evmVersion = solidity::test::CommonOptions::get().evmVersion();
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Assembly _assembly{evmVersion, false, {}};
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auto root_asm = make_shared<string>("root.asm");
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_assembly.setSourceLocation({1, 3, root_asm});
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Assembly _subAsm{evmVersion, false, {}};
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auto sub_asm = make_shared<string>("sub.asm");
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_subAsm.setSourceLocation({6, 8, sub_asm});
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Assembly _verbatimAsm(evmVersion, true, "");
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auto verbatim_asm = make_shared<string>("verbatim.asm");
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_verbatimAsm.setSourceLocation({8, 18, verbatim_asm});
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// PushImmutable
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_subAsm.appendImmutable("someImmutable");
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_subAsm.append(AssemblyItem(PushTag, 0));
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_subAsm.append(Instruction::INVALID);
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shared_ptr<Assembly> _subAsmPtr = make_shared<Assembly>(_subAsm);
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_verbatimAsm.appendVerbatim({0xff,0xff}, 0, 0);
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_verbatimAsm.appendVerbatim({0x74, 0x65, 0x73, 0x74}, 0, 1);
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_verbatimAsm.append(Instruction::MSTORE);
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shared_ptr<Assembly> _verbatimAsmPtr = make_shared<Assembly>(_verbatimAsm);
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// Tag
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auto tag = _assembly.newTag();
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_assembly.append(tag);
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// Operation
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_assembly.append(u256(1));
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_assembly.append(u256(2));
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// Push
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auto keccak256 = AssemblyItem(Instruction::KECCAK256);
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_assembly.m_currentModifierDepth = 1;
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_assembly.append(keccak256);
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_assembly.m_currentModifierDepth = 0;
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// PushProgramSize
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_assembly.appendProgramSize();
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// PushLibraryAddress
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_assembly.appendLibraryAddress("someLibrary");
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// PushTag + Operation
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_assembly.appendJump(tag);
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// PushData
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_assembly.append(bytes{0x1, 0x2, 0x3, 0x4});
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// PushSubSize
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auto sub = _assembly.appendSubroutine(_subAsmPtr);
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// PushSub
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_assembly.pushSubroutineOffset(static_cast<size_t>(sub.data()));
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// PushSubSize
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auto verbatim_sub = _assembly.appendSubroutine(_verbatimAsmPtr);
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// PushSub
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_assembly.pushSubroutineOffset(static_cast<size_t>(verbatim_sub.data()));
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// PushDeployTimeAddress
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_assembly.append(PushDeployTimeAddress);
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// AssignImmutable.
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// Note that since there is no reference to "someOtherImmutable", this will just compile to two POPs in the hex output.
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_assembly.appendImmutableAssignment("someOtherImmutable");
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_assembly.append(u256(2));
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_assembly.appendImmutableAssignment("someImmutable");
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// Operation
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_assembly.append(Instruction::STOP);
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_assembly.appendToAuxiliaryData(bytes{0x42, 0x66});
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_assembly.appendToAuxiliaryData(bytes{0xee, 0xaa});
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_assembly.m_currentModifierDepth = 2;
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_assembly.appendJump(tag);
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_assembly.m_currentModifierDepth = 0;
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checkCompilation(_assembly);
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BOOST_CHECK_EQUAL(
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_assembly.assemble().toHex(),
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"5b6001600220607f73__$bf005014d9d0f534b8fcb268bd84c491a2$__"
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"60005660776024604c600760707300000000000000000000000000000000000000005050"
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"600260010152"
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"006000"
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"56fe"
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"7f0000000000000000000000000000000000000000000000000000000000000000"
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"6000feffff7465737452010203044266eeaa"
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);
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BOOST_CHECK_EQUAL(
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_assembly.assemblyString(),
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" /* \"root.asm\":1:3 */\n"
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"tag_1:\n"
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" keccak256(0x02, 0x01)\n"
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" bytecodeSize\n"
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" linkerSymbol(\"bf005014d9d0f534b8fcb268bd84c491a2380f4acd260d1ccfe9cd8201f7e994\")\n"
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" jump(tag_1)\n"
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" data_a6885b3731702da62e8e4a8f584ac46a7f6822f4e2ba50fba902f67b1588d23b\n"
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" dataSize(sub_0)\n"
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" dataOffset(sub_0)\n"
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" dataSize(sub_1)\n"
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" dataOffset(sub_1)\n"
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" deployTimeAddress()\n"
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" assignImmutable(\"0xc3978657661c4d8e32e3d5f42597c009f0d3859e9f9d0d94325268f9799e2bfb\")\n"
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" 0x02\n"
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" assignImmutable(\"0x26f2c0195e9d408feff3abd77d83f2971f3c9a18d1e8a9437c7835ae4211fc9f\")\n"
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" stop\n"
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" jump(tag_1)\n"
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"stop\n"
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"data_a6885b3731702da62e8e4a8f584ac46a7f6822f4e2ba50fba902f67b1588d23b 01020304\n"
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"\n"
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"sub_0: assembly {\n"
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" /* \"sub.asm\":6:8 */\n"
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" immutable(\"0x26f2c0195e9d408feff3abd77d83f2971f3c9a18d1e8a9437c7835ae4211fc9f\")\n"
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" tag_0\n"
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" invalid\n"
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"}\n"
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"\n"
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"sub_1: assembly {\n"
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" /* \"verbatim.asm\":8:18 */\n"
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" verbatimbytecode_ffff\n"
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" verbatimbytecode_74657374\n"
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" mstore\n"
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"}\n"
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"\n"
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"auxdata: 0x4266eeaa\n"
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);
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string json{
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"{\".auxdata\":\"4266eeaa\",\".code\":["
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"{\"begin\":1,\"end\":3,\"name\":\"tag\",\"source\":0,\"value\":\"1\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"JUMPDEST\",\"source\":0},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH\",\"source\":0,\"value\":\"1\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH\",\"source\":0,\"value\":\"2\"},"
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"{\"begin\":1,\"end\":3,\"modifierDepth\":1,\"name\":\"KECCAK256\",\"source\":0},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSHSIZE\",\"source\":0},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSHLIB\",\"source\":0,\"value\":\"someLibrary\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH [tag]\",\"source\":0,\"value\":\"1\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"JUMP\",\"source\":0},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH data\",\"source\":0,\"value\":\"A6885B3731702DA62E8E4A8F584AC46A7F6822F4E2BA50FBA902F67B1588D23B\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH #[$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000000\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH [$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000000\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH #[$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000001\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH [$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000001\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSHDEPLOYADDRESS\",\"source\":0},"
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"{\"begin\":1,\"end\":3,\"name\":\"ASSIGNIMMUTABLE\",\"source\":0,\"value\":\"someOtherImmutable\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"PUSH\",\"source\":0,\"value\":\"2\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"ASSIGNIMMUTABLE\",\"source\":0,\"value\":\"someImmutable\"},"
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"{\"begin\":1,\"end\":3,\"name\":\"STOP\",\"source\":0},"
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"{\"begin\":1,\"end\":3,\"modifierDepth\":2,\"name\":\"PUSH [tag]\",\"source\":0,\"value\":\"1\"},{\"begin\":1,\"end\":3,\"modifierDepth\":2,\"name\":\"JUMP\",\"source\":0}"
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"],\".data\":{\"0\":{\".code\":["
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"{\"begin\":6,\"end\":8,\"name\":\"PUSHIMMUTABLE\",\"source\":1,\"value\":\"someImmutable\"},"
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"{\"begin\":6,\"end\":8,\"name\":\"PUSH [ErrorTag]\",\"source\":1},"
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"{\"begin\":6,\"end\":8,\"name\":\"INVALID\",\"source\":1}"
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"]},"
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"\"1\":{\".code\":["
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"{\"begin\":8,\"end\":18,\"name\":\"VERBATIM\",\"source\":2,\"value\":\"ffff\"},"
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"{\"begin\":8,\"end\":18,\"name\":\"VERBATIM\",\"source\":2,\"value\":\"74657374\"},"
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"{\"begin\":8,\"end\":18,\"name\":\"MSTORE\",\"source\":2}"
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"]},\"A6885B3731702DA62E8E4A8F584AC46A7F6822F4E2BA50FBA902F67B1588D23B\":\"01020304\"},\"sourceList\":[\"root.asm\",\"sub.asm\",\"verbatim.asm\"]}"
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};
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Json::Value jsonValue;
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BOOST_CHECK(util::jsonParseStrict(json, jsonValue));
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BOOST_CHECK_EQUAL(util::jsonCompactPrint(_assembly.assemblyJSON(indices)), util::jsonCompactPrint(jsonValue));
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}
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BOOST_AUTO_TEST_CASE(immutables_and_its_source_maps)
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{
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EVMVersion evmVersion = solidity::test::CommonOptions::get().evmVersion();
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// Tests for 1, 2, 3 number of immutables.
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for (int numImmutables = 1; numImmutables <= 3; ++numImmutables)
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{
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BOOST_TEST_MESSAGE("NumImmutables: "s + to_string(numImmutables));
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// Tests for the cases 1, 2, 3 occurrences of an immutable reference.
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for (int numActualRefs = 1; numActualRefs <= 3; ++numActualRefs)
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{
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BOOST_TEST_MESSAGE("NumActualRefs: "s + to_string(numActualRefs));
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auto const NumExpectedMappings =
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(
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2 + // PUSH <a> PUSH <b>
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(numActualRefs - 1) * 5 + // DUP DUP PUSH <n> ADD MTOSRE
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3 // PUSH <n> ADD MSTORkhbE
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) * numImmutables;
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auto constexpr NumSubs = 1;
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auto constexpr NumOpcodesWithoutMappings =
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NumSubs + // PUSH <addr> for every sub assembly
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1; // INVALID
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auto assemblyName = make_shared<string>("root.asm");
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auto subName = make_shared<string>("sub.asm");
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map<string, unsigned> indices = {
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{ *assemblyName, 0 },
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{ *subName, 1 }
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};
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auto subAsm = make_shared<Assembly>(evmVersion, false, string{});
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for (char i = 0; i < numImmutables; ++i)
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{
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for (int r = 0; r < numActualRefs; ++r)
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{
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subAsm->setSourceLocation(SourceLocation{10*i, 10*i + 6 + r, subName});
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subAsm->appendImmutable(string(1, char('a' + i))); // "a", "b", ...
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}
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}
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Assembly assembly{evmVersion, true, {}};
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for (char i = 1; i <= numImmutables; ++i)
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{
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assembly.setSourceLocation({10*i, 10*i + 3+i, assemblyName});
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assembly.append(u256(0x71)); // immutble value
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assembly.append(u256(0)); // target... modules?
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assembly.appendImmutableAssignment(string(1, char('a' + i - 1)));
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}
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assembly.appendSubroutine(subAsm);
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checkCompilation(assembly);
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string const sourceMappings = AssemblyItem::computeSourceMapping(assembly.items(), indices);
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auto const numberOfMappings = std::count(sourceMappings.begin(), sourceMappings.end(), ';');
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LinkerObject const& obj = assembly.assemble();
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string const disassembly = disassemble(obj.bytecode, evmVersion, "\n");
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auto const numberOfOpcodes = std::count(disassembly.begin(), disassembly.end(), '\n');
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#if 0 // {{{ debug prints
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{
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LinkerObject const& subObj = assembly.sub(0).assemble();
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string const subDisassembly = disassemble(subObj.bytecode, "\n");
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cout << '\n';
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cout << "### immutables: " << numImmutables << ", refs: " << numActualRefs << '\n';
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cout << " - srcmap: \"" << sourceMappings << "\"\n";
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cout << " - src mappings: " << numberOfMappings << '\n';
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cout << " - opcodes: " << numberOfOpcodes << '\n';
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cout << " - subs: " << assembly.numSubs() << '\n';
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cout << " - sub opcodes " << std::count(subDisassembly.begin(), subDisassembly.end(), '\n') << '\n';
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cout << " - sub srcmaps " << AssemblyItem::computeSourceMapping(subAsm->items(), indices) << '\n';
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cout << " - main bytecode:\n\t" << disassemble(obj.bytecode, "\n\t");
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cout << "\r - sub bytecode:\n\t" << disassemble(subObj.bytecode, "\n\t");
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}
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#endif // }}}
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BOOST_REQUIRE_EQUAL(NumExpectedMappings, numberOfMappings);
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BOOST_REQUIRE_EQUAL(NumExpectedMappings, numberOfOpcodes - NumOpcodesWithoutMappings);
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}
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}
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}
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BOOST_AUTO_TEST_CASE(immutable)
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{
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map<string, unsigned> indices = {
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{ "root.asm", 0 },
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{ "sub.asm", 1 }
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};
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EVMVersion evmVersion = solidity::test::CommonOptions::get().evmVersion();
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Assembly _assembly{evmVersion, true, {}};
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auto root_asm = make_shared<string>("root.asm");
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_assembly.setSourceLocation({1, 3, root_asm});
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Assembly _subAsm{evmVersion, false, {}};
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auto sub_asm = make_shared<string>("sub.asm");
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_subAsm.setSourceLocation({6, 8, sub_asm});
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_subAsm.appendImmutable("someImmutable");
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_subAsm.appendImmutable("someOtherImmutable");
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_subAsm.appendImmutable("someImmutable");
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shared_ptr<Assembly> _subAsmPtr = make_shared<Assembly>(_subAsm);
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_assembly.append(u256(42));
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_assembly.append(u256(0));
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_assembly.appendImmutableAssignment("someImmutable");
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_assembly.append(u256(23));
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_assembly.append(u256(0));
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_assembly.appendImmutableAssignment("someOtherImmutable");
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auto sub = _assembly.appendSubroutine(_subAsmPtr);
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_assembly.pushSubroutineOffset(static_cast<size_t>(sub.data()));
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checkCompilation(_assembly);
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BOOST_CHECK_EQUAL(
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_assembly.assemble().toHex(),
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// root.asm
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// assign "someImmutable"
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"602a" // PUSH1 42 - value for someImmutable
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"6000" // PUSH1 0 - offset of code into which to insert the immutable
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"8181" // DUP2 DUP2
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"6001" // PUSH1 1 - offset of first someImmutable in sub_0
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"01" // ADD - add offset of immutable to offset of code
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"52" // MSTORE
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"6043" // PUSH1 67 - offset of second someImmutable in sub_0
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"01" // ADD - add offset of immutable to offset of code
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"52" // MSTORE
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// assign "someOtherImmutable"
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"6017" // PUSH1 23 - value for someOtherImmutable
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"6000" // PUSH1 0 - offset of code into which to insert the immutable
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"6022" // PUSH1 34 - offset of someOtherImmutable in sub_0
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"01" // ADD - add offset of immutable to offset of code
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"52" // MSTORE
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"6063" // PUSH1 0x63 - dataSize(sub_0)
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"601b" // PUSH1 0x23 - dataOffset(sub_0)
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"fe" // INVALID
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// end of root.asm
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// sub.asm
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"7f0000000000000000000000000000000000000000000000000000000000000000" // PUSHIMMUTABLE someImmutable - data at offset 1
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"7f0000000000000000000000000000000000000000000000000000000000000000" // PUSHIMMUTABLE someOtherImmutable - data at offset 34
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"7f0000000000000000000000000000000000000000000000000000000000000000" // PUSHIMMUTABLE someImmutable - data at offset 67
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);
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BOOST_CHECK_EQUAL(
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_assembly.assemblyString(),
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" /* \"root.asm\":1:3 */\n"
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" 0x2a\n"
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" 0x00\n"
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" assignImmutable(\"0x26f2c0195e9d408feff3abd77d83f2971f3c9a18d1e8a9437c7835ae4211fc9f\")\n"
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" 0x17\n"
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" 0x00\n"
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" assignImmutable(\"0xc3978657661c4d8e32e3d5f42597c009f0d3859e9f9d0d94325268f9799e2bfb\")\n"
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" dataSize(sub_0)\n"
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" dataOffset(sub_0)\n"
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"stop\n"
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"\n"
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"sub_0: assembly {\n"
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" /* \"sub.asm\":6:8 */\n"
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" immutable(\"0x26f2c0195e9d408feff3abd77d83f2971f3c9a18d1e8a9437c7835ae4211fc9f\")\n"
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" immutable(\"0xc3978657661c4d8e32e3d5f42597c009f0d3859e9f9d0d94325268f9799e2bfb\")\n"
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" immutable(\"0x26f2c0195e9d408feff3abd77d83f2971f3c9a18d1e8a9437c7835ae4211fc9f\")\n"
|
|
"}\n"
|
|
);
|
|
BOOST_CHECK_EQUAL(
|
|
util::jsonCompactPrint(_assembly.assemblyJSON(indices)),
|
|
"{\".code\":["
|
|
"{\"begin\":1,\"end\":3,\"name\":\"PUSH\",\"source\":0,\"value\":\"2A\"},"
|
|
"{\"begin\":1,\"end\":3,\"name\":\"PUSH\",\"source\":0,\"value\":\"0\"},"
|
|
"{\"begin\":1,\"end\":3,\"name\":\"ASSIGNIMMUTABLE\",\"source\":0,\"value\":\"someImmutable\"},"
|
|
"{\"begin\":1,\"end\":3,\"name\":\"PUSH\",\"source\":0,\"value\":\"17\"},"
|
|
"{\"begin\":1,\"end\":3,\"name\":\"PUSH\",\"source\":0,\"value\":\"0\"},"
|
|
"{\"begin\":1,\"end\":3,\"name\":\"ASSIGNIMMUTABLE\",\"source\":0,\"value\":\"someOtherImmutable\"},"
|
|
"{\"begin\":1,\"end\":3,\"name\":\"PUSH #[$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000000\"},"
|
|
"{\"begin\":1,\"end\":3,\"name\":\"PUSH [$]\",\"source\":0,\"value\":\"0000000000000000000000000000000000000000000000000000000000000000\"}"
|
|
"],\".data\":{\"0\":{\".code\":["
|
|
"{\"begin\":6,\"end\":8,\"name\":\"PUSHIMMUTABLE\",\"source\":1,\"value\":\"someImmutable\"},"
|
|
"{\"begin\":6,\"end\":8,\"name\":\"PUSHIMMUTABLE\",\"source\":1,\"value\":\"someOtherImmutable\"},"
|
|
"{\"begin\":6,\"end\":8,\"name\":\"PUSHIMMUTABLE\",\"source\":1,\"value\":\"someImmutable\"}"
|
|
"]}},\"sourceList\":[\"root.asm\",\"sub.asm\"]}"
|
|
);
|
|
}
|
|
|
|
BOOST_AUTO_TEST_CASE(subobject_encode_decode)
|
|
{
|
|
EVMVersion evmVersion = solidity::test::CommonOptions::get().evmVersion();
|
|
Assembly assembly{evmVersion, true, {}};
|
|
|
|
shared_ptr<Assembly> subAsmPtr = make_shared<Assembly>(evmVersion, false, string{});
|
|
shared_ptr<Assembly> subSubAsmPtr = make_shared<Assembly>(evmVersion, false, string{});
|
|
|
|
assembly.appendSubroutine(subAsmPtr);
|
|
subAsmPtr->appendSubroutine(subSubAsmPtr);
|
|
|
|
BOOST_CHECK(assembly.encodeSubPath({0}) == 0);
|
|
BOOST_REQUIRE_THROW(assembly.encodeSubPath({1}), solidity::evmasm::AssemblyException);
|
|
BOOST_REQUIRE_THROW(assembly.decodeSubPath(1), solidity::evmasm::AssemblyException);
|
|
|
|
vector<size_t> subPath{0, 0};
|
|
BOOST_CHECK(assembly.decodeSubPath(assembly.encodeSubPath(subPath)) == subPath);
|
|
}
|
|
|
|
BOOST_AUTO_TEST_SUITE_END()
|
|
|
|
} // end namespaces
|