diff options
Diffstat (limited to 'lib/std/jsbigints.nim')
| -rw-r--r-- | lib/std/jsbigints.nim | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/lib/std/jsbigints.nim b/lib/std/jsbigints.nim index ccf14080b..4e996ea7b 100644 --- a/lib/std/jsbigints.nim +++ b/lib/std/jsbigints.nim @@ -3,27 +3,36 @@ when not defined(js): {.fatal: "Module jsbigints is designed to be used with the JavaScript backend.".} +when defined(nimPreviewSlimSystem): + import std/assertions + type JsBigIntImpl {.importjs: "bigint".} = int # https://github.com/nim-lang/Nim/pull/16606 type JsBigInt* = distinct JsBigIntImpl ## Arbitrary precision integer for JavaScript target. func big*(integer: SomeInteger): JsBigInt {.importjs: "BigInt(#)".} = ## Constructor for `JsBigInt`. - when nimvm: doAssert false, "JsBigInt can not be used at compile-time nor static context" else: discard runnableExamples: doAssert big(1234567890) == big"1234567890" doAssert 0b1111100111.big == 0o1747.big and 0o1747.big == 999.big + when nimvm: raiseAssert "JsBigInt can not be used at compile-time nor static context" else: discard -func big*(integer: cstring): JsBigInt {.importjs: "BigInt(#)".} = +func `'big`*(num: cstring): JsBigInt {.importjs: "BigInt(#)".} = ## Constructor for `JsBigInt`. - when nimvm: doAssert false, "JsBigInt can not be used at compile-time nor static context" else: discard runnableExamples: - doAssert big"-1" == big"1" - big"2" + doAssert -1'big == 1'big - 2'big # supports decimal, binary, octal, hex: - doAssert big"12" == 12.big - doAssert big"0b101" == 0b101.big - doAssert big"0o701" == 0o701.big - doAssert big"0xdeadbeaf" == 0xdeadbeaf.big - doAssert big"0xffffffffffffffff" == (1.big shl 64.big) - 1.big + doAssert -12'big == big"-12" + doAssert 12'big == 12.big + doAssert 0b101'big == 0b101.big + doAssert 0o701'big == 0o701.big + doAssert 0xdeadbeaf'big == 0xdeadbeaf.big + doAssert 0xffffffffffffffff'big == (1'big shl 64'big) - 1'big + doAssert not compiles(static(12'big)) + when nimvm: raiseAssert "JsBigInt can not be used at compile-time nor static context" else: discard + +func big*(integer: cstring): JsBigInt {.importjs: "BigInt(#)".} = + ## Alias for `'big` + when nimvm: raiseAssert "JsBigInt can not be used at compile-time nor static context" else: discard func toCstring*(this: JsBigInt; radix: 2..36): cstring {.importjs: "#.toString(#)".} = ## Converts from `JsBigInt` to `cstring` representation. @@ -55,10 +64,10 @@ func wrapToUint*(this: JsBigInt; bits: Natural): JsBigInt {.importjs: runnableExamples: doAssert (big("3") + big("2") ** big("66")).wrapToUint(66) == big("3") -func toNumber*(this: JsBigInt): BiggestInt {.importjs: "Number(#)".} = +func toNumber*(this: JsBigInt): int {.importjs: "Number(#)".} = ## Does not do any bounds check and may or may not return an inexact representation. runnableExamples: - doAssert toNumber(big"2147483647") == 2147483647.BiggestInt + doAssert toNumber(big"2147483647") == 2147483647.int func `+`*(x, y: JsBigInt): JsBigInt {.importjs: "(# $1 #)".} = runnableExamples: @@ -101,7 +110,7 @@ func `==`*(x, y: JsBigInt): bool {.importjs: "(# == #)".} = doAssert big"42" == big"42" func `**`*(x, y: JsBigInt): JsBigInt {.importjs: "((#) $1 #)".} = - # (#) needed, refs https://github.com/nim-lang/Nim/pull/16409#issuecomment-760550812 + # (#) needed due to unary minus runnableExamples: doAssert big"2" ** big"64" == big"18446744073709551616" doAssert big"-2" ** big"3" == big"-8" @@ -111,8 +120,6 @@ func `**`*(x, y: JsBigInt): JsBigInt {.importjs: "((#) $1 #)".} = try: discard big"2" ** big"-1" # raises foreign `RangeError` except: ok = true doAssert ok - # pending https://github.com/nim-lang/Nim/pull/15940, simplify to: - # doAssertRaises: discard big"2" ** big"-1" # raises foreign `RangeError` func `and`*(x, y: JsBigInt): JsBigInt {.importjs: "(# & #)".} = runnableExamples: |