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authorRemco Bloemen <remco@wicked.ventures>2018-06-13 23:20:18 +0800
committerRemco Bloemen <remco@wicked.ventures>2018-06-23 19:53:38 +0800
commit2054cd78da9c39e5572cd76bb9fff7a4cd581903 (patch)
tree8ceaa5148f2b82ea4b1985521af364526e3588f0 /packages
parent88982f98ff2ece93831b1442d2c4e1ef0878d919 (diff)
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Rename bytes.rawAddress and add bytes.contentAddress
Diffstat (limited to 'packages')
-rw-r--r--packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol2
-rw-r--r--packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol31
2 files changed, 25 insertions, 8 deletions
diff --git a/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol b/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol
index 84b9e4673..299452c96 100644
--- a/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol
+++ b/packages/contracts/src/contracts/current/test/TestLibBytes/TestLibBytes.sol
@@ -243,7 +243,7 @@ contract TestLibBytes {
require(dest + length <= mem.length);
// Get pointer to memory contents
- uint256 offset = mem.getMemAddress() + 32;
+ uint256 offset = mem.contentAddress();
// Execute memCopy adjusted for memory array location
LibBytes.memCopy(offset + dest, offset + source, length);
diff --git a/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol b/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
index ad3a35aef..d824449a2 100644
--- a/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
+++ b/packages/contracts/src/contracts/current/utils/LibBytes/LibBytes.sol
@@ -19,6 +19,7 @@
pragma solidity ^0.4.24;
library LibBytes {
+ using LibBytes for bytes;
// Revert reasons
string constant GREATER_THAN_ZERO_LENGTH_REQUIRED = "GREATER_THAN_ZERO_LENGTH_REQUIRED";
@@ -30,8 +31,10 @@ library LibBytes {
/// @dev Gets the memory address for a byte array.
/// @param input Byte array to lookup.
- /// @return memoryAddress Memory address of byte array.
- function getMemAddress(bytes memory input)
+ /// @return memoryAddress Memory address of byte array. This
+ /// points to the header of the byte array which contains
+ /// the length.
+ function rawAddress(bytes memory input)
internal
pure
returns (uint256 memoryAddress)
@@ -41,6 +44,20 @@ library LibBytes {
}
return memoryAddress;
}
+
+ /// @dev Gets the memory address for the contents of a byte array.
+ /// @param input Byte array to lookup.
+ /// @return memoryAddress Memory address of the contents of the byte array.
+ function contentAddress(bytes memory input)
+ internal
+ pure
+ returns (uint256 memoryAddress)
+ {
+ assembly {
+ memoryAddress := add(input, 32)
+ }
+ return memoryAddress;
+ }
/// @dev Copies `length` bytes from memory location `source` to `dest`.
/// @param dest memory address to copy bytes to.
@@ -393,8 +410,8 @@ library LibBytes {
// Allocate memory and copy value to result
result = new bytes(nestedBytesLength);
memCopy(
- getMemAddress(result) + 32, // +32 skips array length
- getMemAddress(b) + index + 32,
+ result.contentAddress(),
+ b.contentAddress() + index,
nestedBytesLength
);
@@ -422,9 +439,9 @@ library LibBytes {
// Copy <input> into <b>
memCopy(
- getMemAddress(b) + 32 + index, // +32 to skip length of <b>
- getMemAddress(input), // includes length of <input>
- input.length + 32 // +32 bytes to store <input> length
+ b.contentAddress() + index,
+ input.rawAddress(), // includes length of <input>
+ input.length + 32 // +32 bytes to store <input> length
);
}