diff options
Diffstat (limited to 'lib/system.nim')
| -rw-r--r-- | lib/system.nim | 40 |
1 files changed, 32 insertions, 8 deletions
diff --git a/lib/system.nim b/lib/system.nim index e34538a89..2f9cdc5f9 100644 --- a/lib/system.nim +++ b/lib/system.nim @@ -158,9 +158,11 @@ when defined(nimHasEnsureMove): ## Ensures that `x` is moved to the new location, otherwise it gives ## an error at the compile time. runnableExamples: - var x = "Hello" - let y = ensureMove(x) - doAssert y == "Hello" + proc foo = + var x = "Hello" + let y = ensureMove(x) + doAssert y == "Hello" + foo() discard "implemented in injectdestructors" type @@ -1035,7 +1037,7 @@ const ## Possible values: ## `"i386"`, `"alpha"`, `"powerpc"`, `"powerpc64"`, `"powerpc64el"`, ## `"sparc"`, `"amd64"`, `"mips"`, `"mipsel"`, `"arm"`, `"arm64"`, - ## `"mips64"`, `"mips64el"`, `"riscv32"`, `"riscv64"`, '"loongarch64"'. + ## `"mips64"`, `"mips64el"`, `"riscv32"`, `"riscv64"`, `"loongarch64"`. seqShallowFlag = low(int) strlitFlag = 1 shl (sizeof(int)*8 - 2) # later versions of the codegen \ @@ -2083,7 +2085,8 @@ when notJSnotNims: proc cmpMem(a, b: pointer, size: Natural): int = nimCmpMem(a, b, size).int -when not defined(js): +when not defined(js) or defined(nimscript): + # nimscript can be defined if config file for js compilation proc cmp(x, y: string): int = when nimvm: if x < y: result = -1 @@ -2100,12 +2103,14 @@ when not defined(js): proc cstringArrayToSeq*(a: cstringArray, len: Natural): seq[string] = ## Converts a `cstringArray` to a `seq[string]`. `a` is supposed to be ## of length `len`. + if a == nil: return @[] newSeq(result, len) for i in 0..len-1: result[i] = $a[i] proc cstringArrayToSeq*(a: cstringArray): seq[string] = ## Converts a `cstringArray` to a `seq[string]`. `a` is supposed to be ## terminated by `nil`. + if a == nil: return @[] var L = 0 while a[L] != nil: inc(L) result = cstringArrayToSeq(a, L) @@ -2346,8 +2351,14 @@ when notJSnotNims: `result` = `x`.ClE_0; """.} - proc finished*[T: iterator {.closure.}](x: T): bool {.noSideEffect, inline, magic: "Finished".} = - ## It can be used to determine if a first class iterator has finished. +proc finished*[T: iterator {.closure.}](x: T): bool {.noSideEffect, inline, magic: "Finished".} = + ## It can be used to determine if a first class iterator has finished. + when defined(js): + # TODO: mangle `:state` + {.emit: """ + `result` = (`x`.ClE_0).HEX3Astate < 0; + """.} + else: {.emit: """ `result` = ((NI*) `x`.ClE_0)[1] < 0; """.} @@ -2355,7 +2366,8 @@ when notJSnotNims: from std/private/digitsutils import addInt export addInt -when defined(js): +when defined(js) and not defined(nimscript): + # nimscript can be defined if config file for js compilation include "system/jssys" include "system/reprjs" @@ -2786,6 +2798,18 @@ when not defined(js): proc toOpenArray*[T](x: seq[T]; first, last: int): openArray[T] {. magic: "Slice".} + ## Allows passing the slice of `x` from the element at `first` to the element + ## at `last` to `openArray[T]` parameters without copying it. + ## + ## Example: + ## ```nim + ## proc test(x: openArray[int]) = + ## doAssert x == [1, 2, 3] + ## + ## let s = @[0, 1, 2, 3, 4] + ## s.toOpenArray(1, 3).test + ## ``` + proc toOpenArray*[T](x: openArray[T]; first, last: int): openArray[T] {. magic: "Slice".} proc toOpenArray*[I, T](x: array[I, T]; first, last: I): openArray[T] {. |