Uniswap like SC

.gitignore

@@ -9,3 +9,7 @@ x64/
 /test/universe.*
 /test/contract0???.???
 /test/tmp_file_*
+
+.DS_Store
+.clang-format
+tmp

LICENSE-MIT.md

@@ -0,0 +1,23 @@
+The MIT License (MIT)
+
+Copyright (c) 2013 - 2017 Jason Lee @ calccrypto at gmail.com
+
+Applies to the files src/platform/uint128.h and test/uint128.cpp
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

LICENSE.md

@@ -39,3 +39,10 @@ The above copyright notice and this permission notice shall be included in all c
 
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+This project is licensed under the Anti-Military License. However, it includes
+some code licensed under the MIT License. The MIT licensed code is used with
+permission and retains its original MIT license.
+
+The MIT licensed code is from the following sources:
+- [uint128_t](https://github.com/calccrypto/uint128_t)

README.md

@@ -147,6 +147,13 @@ We recommend to synchronize a Linux / Windows / MacOS machine with NTP permanent
 ## License
 The Anti-Military License. See [LICENSE.md](LICENSE.md).
 
+This project is licensed under the Anti-Military License. However, it includes
+some code licensed under the MIT License. The MIT licensed code is used with
+permission and retains its original MIT license.
+
+The MIT licensed code is from the following sources:
+- [uint128_t](https://github.com/calccrypto/uint128_t)
+
 ## Installation and Configuration
 Please refer to https://docs.qubic.org
 

src/Qubic.vcxproj

@@ -23,6 +23,7 @@
     <ClInclude Include="assets\net_msg_impl.h" />
     <ClInclude Include="common_buffers.h" />
     <ClInclude Include="contracts\ComputorControlledFund.h" />
+    <ClInclude Include="contracts\Qswap.h" />
     <ClInclude Include="contracts\SupplyWatcher.h" />
     <ClInclude Include="contracts\EmptyTemplate.h" />
     <ClInclude Include="contracts\GeneralQuorumProposal.h" />
@@ -86,6 +87,7 @@
     <ClInclude Include="platform\random.h" />
     <ClInclude Include="platform\read_write_lock.h" />
     <ClInclude Include="platform\stack_size_tracker.h" />
+    <ClInclude Include="platform\uint128.h" />
     <ClInclude Include="platform\time_stamp_counter.h" />
     <ClInclude Include="platform\global_var.h" />
     <ClInclude Include="score.h" />

src/Qubic.vcxproj.filters

@@ -237,6 +237,12 @@
     <ClInclude Include="network_messages\logging.h">
       <Filter>network_messages</Filter>
     </ClInclude>
+    <ClInclude Include="contracts\Qswap.h">
+      <Filter>contracts</Filter>
+    </ClInclude>
+    <ClInclude Include="platform\uint128.h">
+      <Filter>platform</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="platform">

src/contract_core/contract_def.h

@@ -175,6 +175,15 @@ struct __FunctionOrProcedureBeginEndGuard
 #include "contracts/MsVault.h"
 
 // new contracts should be added above this line
+#undef CONTRACT_INDEX
+#undef CONTRACT_STATE_TYPE
+#undef CONTRACT_STATE2_TYPE
+
+#define QSWAP_CONTRACT_INDEX 12
+#define CONTRACT_INDEX QSWAP_CONTRACT_INDEX
+#define CONTRACT_STATE_TYPE QSWAP
+#define CONTRACT_STATE2_TYPE QSWAP2
+#include "contracts/Qswap.h"
 
 #ifdef INCLUDE_CONTRACT_TEST_EXAMPLES
 constexpr unsigned short TESTEXA_CONTRACT_INDEX = (CONTRACT_INDEX + 1);
@@ -250,6 +259,7 @@ constexpr struct ContractDescription
     {"QVAULT", 138, 10000, sizeof(IPO)}, // proposal in epoch 136, IPO in 137, construction and first use in 138
     {"MSVAULT", 149, 10000, sizeof(MSVAULT)}, // proposal in epoch 147, IPO in 148, construction and first use in 149
     // new contracts should be added above this line
+    {"QSWAP", 150, 10000, sizeof(QSWAP)},
 #ifdef INCLUDE_CONTRACT_TEST_EXAMPLES
     {"TESTEXA", 138, 10000, sizeof(IPO)},
     {"TESTEXB", 138, 10000, sizeof(IPO)},
@@ -344,6 +354,7 @@ static void initializeContracts()
     REGISTER_CONTRACT_FUNCTIONS_AND_PROCEDURES(QVAULT);
     REGISTER_CONTRACT_FUNCTIONS_AND_PROCEDURES(MSVAULT);
     // new contracts should be added above this line
+    REGISTER_CONTRACT_FUNCTIONS_AND_PROCEDURES(QSWAP);
 #ifdef INCLUDE_CONTRACT_TEST_EXAMPLES
     REGISTER_CONTRACT_FUNCTIONS_AND_PROCEDURES(TESTEXA);
     REGISTER_CONTRACT_FUNCTIONS_AND_PROCEDURES(TESTEXB);

src/contract_core/qpi_asset_impl.h

@@ -789,3 +789,9 @@ long long QPI::QpiContextProcedureCall::transferShareOwnershipAndPossession(unsi
         }
     }
 }
+
+bool QPI::QpiContextFunctionCall::isAssetIssued(const m256i& issuer, unsigned long long assetName) const
+{
+    bool res = ::issuanceIndex(issuer, assetName) != NO_ASSET_INDEX;
+    return res;
+}