solang-parser 0.2.1

Solang Solidity Parser
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70

pragma abicoder               v2;
contract C {
	function enc_packed_bytes(bytes calldata data, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encodePacked(data[start:end]);
	}
	function enc_packed_bytes_reference(bytes calldata data, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encodePacked(bytes(data[start:end]));
	}

	function enc_bytes(bytes calldata data, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encode(data[start:end]);
	}
	function enc_bytes_reference(bytes calldata data, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encode(bytes(data[start:end]));
	}

	function enc_uint256(uint256[] calldata x, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encode(x[start:end]);
	}
	function enc_uint256_reference(uint256[] calldata x, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encode(x[start:end]);
	}

	function enc_packed_uint256(uint256[] calldata x, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encodePacked(x[start:end]);
	}
	function enc_packed_uint256_reference(uint256[] calldata x, uint256 start, uint256 end) external returns (bytes memory) {
		return abi.encodePacked(x[start:end]);
	}

	function compare(bytes memory x, bytes memory y) internal {
		assert(x.length == y.length);
		for (uint i = 0; i < x.length; ++i)
			assert(x[i] == y[i]);
	}

	function test_bytes() public {
		bytes memory test = new bytes(3);
		test[0] = 0x41; test[1] = 0x42; test[2] = 0x42;
		for (uint i = 0; i < test.length; i++)
			for (uint j = i; j <= test.length; j++)
			{
				compare(this.enc_packed_bytes(test, i, j), this.enc_packed_bytes_reference(test, i, j));
				compare(this.enc_bytes(test, i, j), this.enc_bytes_reference(test, i, j));
			}
	}

	function test_uint256() public {
		uint256[] memory test = new uint256[](3);
		test[0] = 0x41; test[1] = 0x42; test[2] = 0x42;
		for (uint i = 0; i < test.length; i++)
			for (uint j = i; j <= test.length; j++)
			{
				compare(this.enc_packed_uint256(test, i, j), this.enc_packed_uint256_reference(test, i, j));
				compare(this.enc_uint256(test, i, j), this.enc_uint256_reference(test, i, j));
			}
	}
}
// ====
// EVMVersion: >homestead
// compileViaYul: also
// ----
// test_bytes() ->
// gas irOptimized: 371912
// gas legacy: 416585
// gas legacyOptimized: 322043
// test_uint256() ->
// gas irOptimized: 523016
// gas legacy: 583100
// gas legacyOptimized: 444161