{ "contractName": "TickLens", "abi": [], "metadata": 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"bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212205f75d1706730ee3473790c4561c9c06b95c639a514fdc25178d6703f25d0924a64736f6c63430006080033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea26469706673582212205f75d1706730ee3473790c4561c9c06b95c639a514fdc25178d6703f25d0924a64736f6c63430006080033", "immutableReferences": {}, "sourceMap": "156:5201:42:-:0;;132:2:-1;166:7;155:9;146:7;137:37;255:7;249:14;246:1;241:23;235:4;232:33;222:2;;269:9;222:2;293:9;290:1;283:20;323:4;314:7;306:22;347:7;338;331:24", "deployedSourceMap": "156:5201:42:-:0;;;;;;12:1:-1;9;2:12", "source": "// SPDX-License-Identifier: MIT\npragma solidity >=0.4.0 <0.8.0;\npragma experimental ABIEncoderV2;\n\nimport \"./IUniswapV3Pool.sol\";\nimport \"./TickMath.sol\";\n\nlibrary TickLens {\n struct PopulatedTick {\n int24 tick;\n int128 liquidityNet;\n uint128 liquidityGross;\n }\n\n // getPoolTicks returns populated ticks from the Uniswapv3 pool.\n // To keep things reasonably performant it only tries to fetch 5 populated tick words.\n // populatedTicks are not sorted, thus it is up to the user to sort them appropriately.\n function getPoolTicks(\n IUniswapV3Pool pool,\n int16 maxLoopN\n )\n internal\n view\n returns (\n uint160 sqrtPriceX96,\n int24 tick,\n uint128 liquidity,\n PopulatedTick[] memory populatedTicks0,\n PopulatedTick[] memory populatedTicks1,\n PopulatedTick[] memory populatedTicks2,\n PopulatedTick[] memory populatedTicks3,\n PopulatedTick[] memory populatedTicks4\n )\n {\n (\n sqrtPriceX96,\n tick, // uint16 observationIndex\n // uint16 observationCardinality\n // uint16 observationCardinalityNext\n // uint8 feeProtocol\n // bool unlocked\n ,\n ,\n ,\n ,\n\n ) = pool.slot0();\n liquidity = pool.liquidity();\n\n int24 tickSpacing = pool.tickSpacing();\n int24 compressed = tick / tickSpacing;\n if (tick < 0 && tick % tickSpacing != 0) compressed--; // round towards negative infinity\n\n // current word position within bitmap\n int16 tickBitmapIndex = int16(compressed >> 8);\n\n // get the populated ticks near current tick.\n int16 boundTickBitmapIndex = tickBitmapIndex + maxLoopN / 2;\n int16 nextBitmapIndex = tickBitmapIndex;\n (populatedTicks0, nextBitmapIndex) = nextPopulatedTick(\n pool,\n nextBitmapIndex,\n boundTickBitmapIndex\n );\n (populatedTicks1, nextBitmapIndex) = nextPopulatedTick(\n pool,\n nextBitmapIndex,\n boundTickBitmapIndex\n );\n (populatedTicks2, nextBitmapIndex) = nextPopulatedTick(\n pool,\n nextBitmapIndex,\n boundTickBitmapIndex\n );\n\n boundTickBitmapIndex = tickBitmapIndex - maxLoopN / 2;\n nextBitmapIndex = tickBitmapIndex - 1;\n (populatedTicks3, nextBitmapIndex) = prevPopulatedTick(\n pool,\n nextBitmapIndex,\n boundTickBitmapIndex\n );\n (populatedTicks4, nextBitmapIndex) = prevPopulatedTick(\n pool,\n nextBitmapIndex,\n boundTickBitmapIndex\n );\n }\n\n function nextPopulatedTick(\n IUniswapV3Pool pool,\n int16 tickBitmapIndex,\n int16 maxTickBitmapIndex\n )\n internal\n view\n returns (PopulatedTick[] memory populatedTicks, int16 nextBitmapIndex)\n {\n for (\n nextBitmapIndex = tickBitmapIndex;\n nextBitmapIndex <= maxTickBitmapIndex && populatedTicks.length == 0;\n nextBitmapIndex += 1\n ) {\n uint256 bitmap = pool.tickBitmap(nextBitmapIndex);\n if (bitmap > 0) {\n populatedTicks = getPopulatedTicksInWord(\n pool,\n nextBitmapIndex,\n bitmap\n );\n }\n }\n }\n\n function prevPopulatedTick(\n IUniswapV3Pool pool,\n int16 tickBitmapIndex,\n int16 minTickBitmapIndex\n )\n internal\n view\n returns (PopulatedTick[] memory populatedTicks, int16 nextBitmapIndex)\n {\n for (\n nextBitmapIndex = tickBitmapIndex;\n nextBitmapIndex >= minTickBitmapIndex && populatedTicks.length == 0;\n nextBitmapIndex -= 1\n ) {\n uint256 bitmap = pool.tickBitmap(nextBitmapIndex);\n if (bitmap > 0) {\n populatedTicks = getPopulatedTicksInWord(\n pool,\n nextBitmapIndex,\n bitmap\n );\n }\n }\n }\n\n function getPopulatedTicksInWord(\n IUniswapV3Pool pool,\n int16 tickBitmapIndex,\n uint256 bitmap\n ) internal view returns (PopulatedTick[] memory populatedTicks) {\n // calculate the number of populated ticks\n uint256 numberOfPopulatedTicks;\n for (uint256 i = 0; i < 256; i++) {\n if (bitmap & (1 << i) > 0) numberOfPopulatedTicks++;\n }\n\n // fetch populated tick data\n int24 tickSpacing = pool.tickSpacing();\n populatedTicks = new PopulatedTick[](numberOfPopulatedTicks);\n for (uint256 i = 0; i < 256; i++) {\n if (bitmap & (1 << i) > 0) {\n int24 populatedTick = ((int24(tickBitmapIndex) << 8) +\n int24(i)) * tickSpacing;\n (uint128 liquidityGross, int128 liquidityNet, , , , , , ) = pool\n .ticks(populatedTick);\n populatedTicks[--numberOfPopulatedTicks] = PopulatedTick({\n tick: populatedTick,\n liquidityNet: liquidityNet,\n liquidityGross: liquidityGross\n });\n }\n }\n }\n}\n", "sourcePath": 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"230:19:42", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_int128", "typeString": "int128" }, "typeName": { "id": 4373, "name": "int128", "nodeType": "ElementaryTypeName", "src": "230:6:42", "typeDescriptions": { "typeIdentifier": "t_int128", "typeString": "int128" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4376, "mutability": "mutable", "name": "liquidityGross", "nodeType": "VariableDeclaration", "overrides": null, "scope": 4377, "src": "259:22:42", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint128", "typeString": "uint128" }, "typeName": { "id": 4375, "name": "uint128", "nodeType": "ElementaryTypeName", "src": "259:7:42", "typeDescriptions": { "typeIdentifier": "t_uint128", "typeString": "uint128" } }, "value": null, "visibility": "internal" } ], "name": "PopulatedTick", "nodeType": "StructDefinition", "scope": 4751, "src": "179:109:42", 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