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				https://github.com/ethereum/solidity
				synced 2023-10-03 13:03:40 +00:00 
			
		
		
		
	
		
			
				
	
	
		
			64 lines
		
	
	
		
			4.8 KiB
		
	
	
	
		
			Solidity
		
	
	
	
	
	
			
		
		
	
	
			64 lines
		
	
	
		
			4.8 KiB
		
	
	
	
		
			Solidity
		
	
	
	
	
	
pragma abicoder v2;
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contract C {
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	bool sideEffectRan = false;
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	function(uint256, string memory) external fPointer;
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	function fExternal(uint256 p, string memory t) external {}
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	string xstor;
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	function getExternalFunctionPointer() public returns (function(uint256, string memory) external) {
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		sideEffectRan = true;
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		return this.fExternal;
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	}
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	function fSignatureFromLiteral() public pure returns (bytes memory) {
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		return abi.encodeWithSignature("fExternal(uint256,string)", 1, "123");
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	}
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	function fSignatureFromLiteralCall() public view returns (bytes memory) {
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		return abi.encodeCall(this.fExternal, (1, "123"));
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	}
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	function fSignatureFromMemory() public pure returns (bytes memory) {
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		string memory x = "fExternal(uint256,string)";
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		return abi.encodeWithSignature(x, 1, "123");
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	}
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	function fSignatureFromMemoryCall() public view returns (bytes memory) {
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		return abi.encodeCall(this.fExternal, (1,"123"));
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	}
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	function fSignatureFromMemorys() public returns (bytes memory) {
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		xstor = "fExternal(uint256,string)";
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		return abi.encodeWithSignature(xstor, 1, "123");
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	}
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	function fPointerCall() public returns(bytes memory) {
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		fPointer = this.fExternal;
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		return abi.encodeCall(fPointer, (1, "123"));
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	}
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	function fLocalPointerCall() public returns(bytes memory) {
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		function(uint256, string memory) external localFunctionPointer = this.fExternal;
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		return abi.encodeCall(localFunctionPointer, (1, "123"));
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	}
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	function fReturnedFunctionPointer() public returns (bytes memory) {
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		return abi.encodeCall(getExternalFunctionPointer(), (1, "123"));
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	}
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	function assertConsistentSelectors() public {
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		assert(keccak256(fSignatureFromLiteral()) == keccak256(fSignatureFromLiteralCall()));
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		assert(keccak256(fSignatureFromMemory()) == keccak256(fSignatureFromMemoryCall()));
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		assert(keccak256(fSignatureFromMemoryCall()) == keccak256(fSignatureFromMemorys()));
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		assert(keccak256(fPointerCall()) == keccak256(fSignatureFromLiteral()));
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		assert(keccak256(fLocalPointerCall()) == keccak256(fSignatureFromLiteral()));
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		assert(keccak256(fReturnedFunctionPointer()) == keccak256(fSignatureFromLiteral()));
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	}
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}
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// ====
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// compileViaYul: also
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// ----
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// assertConsistentSelectors() ->
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// fSignatureFromLiteral() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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// fSignatureFromLiteralCall() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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// fSignatureFromMemory() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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// fSignatureFromMemoryCall() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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// fSignatureFromMemorys() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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// fPointerCall() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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// fLocalPointerCall() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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// fReturnedFunctionPointer() -> 0x20, 0x84, 23450202028776381066253055403048136312616272755117076566855971503345107992576, 26959946667150639794667015087019630673637144422540572481103610249216, 1725436586697640946858688965569256363112777243042596638790631055949824, 86060793054017993816230018372407419485142305772921726565498526629888, 0
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