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make function arguments immutable by default

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This commit is contained in:
Alexander Medvednikov
2019-08-07 08:19:27 +02:00
parent 06b8bd9382
commit 34e0b164eb
22 changed files with 107 additions and 83 deletions
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8
vlib/crypto/cipher/xor_generic.v
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@@ -8,7 +8,7 @@ module cipher
// xor_bytes xors the bytes in a and b. The destination should have enough
// space, otherwise xor_bytes will panic. Returns the number of bytes xor'd.
pub fn xor_bytes(dst, a, b []byte) int {
pub fn xor_bytes(dst mut []byte, a, b []byte) int {
mut n := a.len
if b.len < n {
n = b.len
@@ -17,13 +17,13 @@ pub fn xor_bytes(dst, a, b []byte) int {
return 0
}
safe_xor_bytes(dst, a, b, n)
safe_xor_bytes(mut dst, a, b, n)
return n
}
// n needs to be smaller or equal than the length of a and b.
pub fn safe_xor_bytes(dst, a, b []byte, n int) {
pub fn safe_xor_bytes(dst mut []byte, a, b []byte, n int) {
for i := 0; i < n; i++ {
dst[i] = a[i] ^ b[i]
}
@@ -32,5 +32,5 @@ pub fn safe_xor_bytes(dst, a, b []byte, n int) {
// fast_xor_words XORs multiples of 4 or 8 bytes (depending on architecture.)
// The slice arguments a and b are assumed to be of equal length.
pub fn xor_words(dst, a, b []byte) {
safe_xor_bytes(dst, a, b, b.len)
safe_xor_bytes(mut dst, a, b, b.len)
}