mirror of https://github.com/status-im/nim-eth.git
79 lines
1.9 KiB
Nim
79 lines
1.9 KiB
Nim
import
|
|
std/[random, sets],
|
|
nimcrypto/[utils, sysrand]
|
|
|
|
type
|
|
RandGen*[T] = object
|
|
minVal, maxVal: T
|
|
|
|
KVPair* = ref object
|
|
key*: seq[byte]
|
|
value*: seq[byte]
|
|
|
|
proc randGen*[T](minVal, maxVal: T): RandGen[T] =
|
|
doAssert(minVal <= maxVal)
|
|
result.minVal = minVal
|
|
result.maxVal = maxVal
|
|
|
|
proc randGen*[T](minMax: T): RandGen[T] =
|
|
randGen(minMax, minMax)
|
|
|
|
proc getVal*[T](x: RandGen[T]): T =
|
|
if x.minVal == x.maxVal: return x.minVal
|
|
rand(x.minVal..x.maxVal)
|
|
|
|
proc randString*(len: int): string =
|
|
result = newString(len)
|
|
for i in 0..<len:
|
|
result[i] = rand(255).char
|
|
|
|
proc randBytes*(len: int): seq[byte] =
|
|
result = newSeq[byte](len)
|
|
discard randomBytes(result[0].addr, len)
|
|
|
|
proc toBytesRange*(str: string): seq[byte] =
|
|
var s: seq[byte]
|
|
if str[0] == '0' and str[1] == 'x':
|
|
s = fromHex(str.substr(2))
|
|
else:
|
|
s = newSeq[byte](str.len)
|
|
for i in 0 ..< str.len:
|
|
s[i] = byte(str[i])
|
|
result = s
|
|
|
|
proc randPrimitives*[T](val: int): T =
|
|
when T is string:
|
|
randString(val)
|
|
elif T is int:
|
|
result = val
|
|
elif T is string:
|
|
result = randString(val)
|
|
elif T is seq[byte]:
|
|
result = randBytes(val)
|
|
|
|
proc randList*(T: typedesc, strGen, listGen: RandGen, unique: bool = true): seq[T] =
|
|
let listLen = listGen.getVal()
|
|
result = newSeqOfCap[T](listLen)
|
|
if unique:
|
|
var set = initHashSet[T]()
|
|
for len in 0..<listLen:
|
|
while true:
|
|
let x = randPrimitives[T](strGen.getVal())
|
|
if x notin set:
|
|
result.add x
|
|
set.incl x
|
|
break
|
|
else:
|
|
for len in 0..<listLen:
|
|
let x = randPrimitives[T](strGen.getVal())
|
|
result.add x
|
|
|
|
proc randKVPair*(keySize = 32): seq[KVPair] =
|
|
const listLen = 100
|
|
let keys = randList(seq[byte], randGen(keySize, keySize), randGen(listLen, listLen))
|
|
let vals = randList(seq[byte], randGen(1, 100), randGen(listLen, listLen))
|
|
|
|
result = newSeq[KVPair](listLen)
|
|
for i in 0..<listLen:
|
|
result[i] = KVPair(key: keys[i], value: vals[i])
|