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nim-stint
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assert() -> doAssert()

This commit is contained in:
Ștefan Talpalaru 2019-03-14 03:43:51 +01:00
parent d002fbb155
commit 6853ebe97c
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GPG Key ID: CBF7934204F1B6F9
5 changed files with 27 additions and 27 deletions
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26
stint/io.nim
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@ -17,7 +17,7 @@ template static_check_size(T: typedesc[SomeInteger], bits: static[int]) =
# To avoid a costly runtime check, we refuse storing into StUint types smaller # To avoid a costly runtime check, we refuse storing into StUint types smaller
# than the input type. # than the input type.
static: assert sizeof(T) * 8 <= bits, "Input type (" & $T & static: doAssert sizeof(T) * 8 <= bits, "Input type (" & $T &
") cannot be stored in a multi-precision " & ") cannot be stored in a multi-precision " &
$bits & "-bit integer." & $bits & "-bit integer." &
"\nUse a smaller input type instead. This is a compile-time check" & "\nUse a smaller input type instead. This is a compile-time check" &
@ -32,7 +32,7 @@ func assignLo(result: var (UintImpl | IntImpl), n: SomeInteger) {.inline.} =
func stuint*[T: SomeInteger](n: T, bits: static[int]): StUint[bits] {.inline.}= func stuint*[T: SomeInteger](n: T, bits: static[int]): StUint[bits] {.inline.}=
## Converts an integer to an arbitrary precision integer. ## Converts an integer to an arbitrary precision integer.
assert n >= 0.T doAssert n >= 0.T
when result.data is UintImpl: when result.data is UintImpl:
static_check_size(T, bits) static_check_size(T, bits)
assignLo(result.data, n) assignLo(result.data, n)
@ -87,16 +87,16 @@ func skipPrefixes(current_idx: var int, str: string, radix: range[2..16]) {.inli
if str.len < 2: if str.len < 2:
return return
assert current_idx == 0, "skipPrefixes only works for prefixes (position 0 and 1 of the string)" doAssert current_idx == 0, "skipPrefixes only works for prefixes (position 0 and 1 of the string)"
if str[0] == '0': if str[0] == '0':
if str[1] in {'x', 'X'}: if str[1] in {'x', 'X'}:
assert radix == 16, "Parsing mismatch, 0x prefix is only valid for a hexadecimal number (base 16)" doAssert radix == 16, "Parsing mismatch, 0x prefix is only valid for a hexadecimal number (base 16)"
current_idx = 2 current_idx = 2
elif str[1] in {'o', 'O'}: elif str[1] in {'o', 'O'}:
assert radix == 8, "Parsing mismatch, 0o prefix is only valid for an octal number (base 8)" doAssert radix == 8, "Parsing mismatch, 0o prefix is only valid for an octal number (base 8)"
current_idx = 2 current_idx = 2
elif str[1] in {'b', 'B'}: elif str[1] in {'b', 'B'}:
assert radix == 2, "Parsing mismatch, 0b prefix is only valid for a binary number (base 2)" doAssert radix == 2, "Parsing mismatch, 0b prefix is only valid for a binary number (base 2)"
current_idx = 2 current_idx = 2
func nextNonBlank(current_idx: var int, s: string) {.inline.} = func nextNonBlank(current_idx: var int, s: string) {.inline.} =
@ -116,7 +116,7 @@ func readDecChar(c: range['0'..'9']): int {.inline.}=
func parse*[bits: static[int]](input: string, T: typedesc[Stuint[bits]], radix: static[uint8] = 10): T = func parse*[bits: static[int]](input: string, T: typedesc[Stuint[bits]], radix: static[uint8] = 10): T =
## Parse a string and store the result in a Stint[bits] or Stuint[bits]. ## Parse a string and store the result in a Stint[bits] or Stuint[bits].
static: assert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported" static: doAssert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported"
# TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26) # TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26)
# TODO: we can special case hex result/input as an array of bytes # TODO: we can special case hex result/input as an array of bytes
@ -137,7 +137,7 @@ func parse*[bits: static[int]](input: string, T: typedesc[Stuint[bits]], radix:
func parse*[bits: static[int]](input: string, T: typedesc[Stint[bits]], radix: static[int8] = 10): T = func parse*[bits: static[int]](input: string, T: typedesc[Stint[bits]], radix: static[int8] = 10): T =
## Parse a string and store the result in a Stint[bits] or Stuint[bits]. ## Parse a string and store the result in a Stint[bits] or Stuint[bits].
static: assert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported" static: doAssert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported"
# TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26) # TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26)
# TODO: we can special case hex result/input as an array of bytes # TODO: we can special case hex result/input as an array of bytes
@ -152,7 +152,7 @@ func parse*[bits: static[int]](input: string, T: typedesc[Stint[bits]], radix: s
no_overflow: Stuint[bits] no_overflow: Stuint[bits]
if input[curr] == '-': if input[curr] == '-':
assert radix == 10, "Negative numbers are only supported with base 10 input." doAssert radix == 10, "Negative numbers are only supported with base 10 input."
isNeg = true isNeg = true
inc curr inc curr
else: else:
@ -186,7 +186,7 @@ func toString*[bits: static[int]](num: StUint[bits], radix: static[uint8] = 10):
## - they are prefixed with "-" for base 10. ## - they are prefixed with "-" for base 10.
## - if not base 10, they are returned raw in two-complement form. ## - if not base 10, they are returned raw in two-complement form.
static: assert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported" static: doAssert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported"
# TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26) # TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26)
const hexChars = "0123456789abcdef" const hexChars = "0123456789abcdef"
@ -209,7 +209,7 @@ func toString*[bits: static[int]](num: Stint[bits], radix: static[int8] = 10): s
## - they are prefixed with "-" for base 10. ## - they are prefixed with "-" for base 10.
## - if not base 10, they are returned raw in two-complement form. ## - if not base 10, they are returned raw in two-complement form.
static: assert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported" static: doAssert (radix >= 2) and radix <= 16, "Only base from 2..16 are supported"
# TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26) # TODO: use static[range[2 .. 16]], not supported at the moment (2018-04-26)
const hexChars = "0123456789abcdef" const hexChars = "0123456789abcdef"
@ -287,9 +287,9 @@ proc initFromBytesBE*[bits: static[int]](val: var Stuint[bits], ba: openarray[by
const N = bits div 8 const N = bits div 8
when not allowPadding: when not allowPadding:
assert(ba.len == N) doAssert(ba.len == N)
else: else:
assert ba.len <= N doAssert ba.len <= N
{.pragma: restrict, codegenDecl: "$# __restrict $#".} {.pragma: restrict, codegenDecl: "$# __restrict $#".}
let r_ptr {.restrict.} = cast[ptr array[N, byte]](val.addr) let r_ptr {.restrict.} = cast[ptr array[N, byte]](val.addr)

16
stint/modular_arithmetic.nim
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@ -13,8 +13,8 @@ func addmod_internal(a, b, m: Stuint): Stuint {.inline.}=
## Modular addition ## Modular addition
## ⚠⚠ Assume a < m and b < m ## ⚠⚠ Assume a < m and b < m
assert a < m doAssert a < m
assert b < m doAssert b < m
# We don't do a_m + b_m directly to avoid overflows # We don't do a_m + b_m directly to avoid overflows
let b_from_m = m - b let b_from_m = m - b
@ -27,8 +27,8 @@ func submod_internal(a, b, m: Stuint): Stuint {.inline.}=
## Modular substraction ## Modular substraction
## ⚠⚠ Assume a < m and b < m ## ⚠⚠ Assume a < m and b < m
assert a < m doAssert a < m
assert b < m doAssert b < m
# We don't do a_m - b_m directly to avoid underflows # We don't do a_m - b_m directly to avoid underflows
if a >= b: if a >= b:
@ -40,7 +40,7 @@ func doublemod_internal(a, m: Stuint): Stuint {.inline.}=
## Double a modulo m. Assume a < m ## Double a modulo m. Assume a < m
## Internal proc - used in mulmod ## Internal proc - used in mulmod
assert a < m doAssert a < m
result = a result = a
if a >= m - a: if a >= m - a:
@ -51,8 +51,8 @@ func mulmod_internal(a, b, m: Stuint): Stuint {.inline.}=
## Does (a * b) mod m. Assume a < m and b < m ## Does (a * b) mod m. Assume a < m and b < m
## Internal proc - used in powmod ## Internal proc - used in powmod
assert a < m doAssert a < m
assert b < m doAssert b < m
var (a, b) = (a, b) var (a, b) = (a, b)
@ -69,7 +69,7 @@ func powmod_internal(a, b, m: Stuint): Stuint {.inline.}=
## Compute ``(a ^ b) mod m``, assume a < m ## Compute ``(a ^ b) mod m``, assume a < m
## Internal proc ## Internal proc
assert a < m doAssert a < m
var (a, b) = (a, b) var (a, b) = (a, b)
result = one(type a) result = one(type a)

8
stint/private/uint_div.nim
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@ -122,7 +122,7 @@ proc div3n2n[T: SomeUnsignedInt](
func div2n1n(q, r: var UintImpl, ah, al, b: UintImpl) = func div2n1n(q, r: var UintImpl, ah, al, b: UintImpl) =
# assert countLeadingZeroBits(b) == 0, "Divisor was not normalized" # doAssert countLeadingZeroBits(b) == 0, "Divisor was not normalized"
var s: UintImpl var s: UintImpl
div3n2n(q.hi, s, ah.hi, ah.lo, al.hi, b) div3n2n(q.hi, s, ah.hi, ah.lo, al.hi, b)
@ -130,7 +130,7 @@ func div2n1n(q, r: var UintImpl, ah, al, b: UintImpl) =
func div2n1n[T: SomeunsignedInt](q, r: var T, n_hi, n_lo, d: T) = func div2n1n[T: SomeunsignedInt](q, r: var T, n_hi, n_lo, d: T) =
# assert countLeadingZeroBits(d) == 0, "Divisor was not normalized" # doAssert countLeadingZeroBits(d) == 0, "Divisor was not normalized"
const const
size = bitsof(q) size = bitsof(q)
@ -170,7 +170,7 @@ func div2n1n[T: SomeunsignedInt](q, r: var T, n_hi, n_lo, d: T) =
func divmodBZ[T](x, y: UintImpl[T], q, r: var UintImpl[T])= func divmodBZ[T](x, y: UintImpl[T], q, r: var UintImpl[T])=
assert y.isZero.not() # This should be checked on release mode in the divmod caller proc doAssert y.isZero.not() # This should be checked on release mode in the divmod caller proc
if y.hi.isZero: if y.hi.isZero:
# Shortcut if divisor is smaller than half the size of the type # Shortcut if divisor is smaller than half the size of the type
@ -207,7 +207,7 @@ func divmodBS(x, y: UintImpl, q, r: var UintImpl) =
## Division for multi-precision unsigned uint ## Division for multi-precision unsigned uint
## Implementation through binary shift division ## Implementation through binary shift division
assert y.isZero.not() # This should be checked on release mode in the divmod caller proc doAssert y.isZero.not() # This should be checked on release mode in the divmod caller proc
type SubTy = type x.lo type SubTy = type x.lo

2
tests/test_io.nim
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@ -200,7 +200,7 @@ suite "Testing conversion functions: Hex, Bytes, Endianness using secp256k1 curv
# sig = ecc.sign(msghash) # sig = ecc.sign(msghash)
# print(" sig='{}',".format(encode_hex(sig))) # print(" sig='{}',".format(encode_hex(sig)))
# print(" raw_sig='{}')".format(crypto._decode_sig(sig))) # print(" raw_sig='{}')".format(crypto._decode_sig(sig)))
# assert crypto.ecdsa_recover(msghash, sig) == pubkey # doAssert crypto.ecdsa_recover(msghash, sig) == pubkey
# """ # """
type type

2
tests/test_uint_bitwise.nim
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@ -14,7 +14,7 @@ suite "Testing unsigned int bitwise operations":
let b = a * a let b = a * a
let z = 10000'u16 let z = 10000'u16
assert cast[uint16](b) == z, "Test cannot proceed, something is wrong with the multiplication implementation" doAssert cast[uint16](b) == z, "Test cannot proceed, something is wrong with the multiplication implementation"
let u = 10000.stuint(64) let u = 10000.stuint(64)