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8032f252b2
fixes #22669 constructor pragma doesnt init Nim default fields --------- Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
109 lines
2.2 KiB
Nim
109 lines
2.2 KiB
Nim
discard """
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targets: "cpp"
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cmd: "nim cpp $file"
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output: '''
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1
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0
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123
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0
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123
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___
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0
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777
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10
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123
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0
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777
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10
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123
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'''
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"""
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{.emit:"""/*TYPESECTION*/
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struct CppClass {
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int x;
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int y;
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CppClass(int inX, int inY) {
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this->x = inX;
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this->y = inY;
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}
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//CppClass() = default;
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};
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""".}
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type CppClass* {.importcpp, inheritable.} = object
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x: int32
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y: int32
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proc makeCppClass(x, y: int32): CppClass {.importcpp: "CppClass(@)", constructor.}
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#test globals are init with the constructor call
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var shouldCompile {.used.} = makeCppClass(1, 2)
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proc newCpp*[T](): ptr T {.importcpp:"new '*0()".}
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#creation
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type NimClassNoNarent* = object
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x: int32
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proc makeNimClassNoParent(x:int32): NimClassNoNarent {. constructor.} =
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this.x = x
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discard
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let nimClassNoParent = makeNimClassNoParent(1)
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echo nimClassNoParent.x #acess to this just fine. Notice the field will appear last because we are dealing with constructor calls here
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var nimClassNoParentDef {.used.}: NimClassNoNarent #test has a default constructor.
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#inheritance
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type NimClass* = object of CppClass
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proc makeNimClass(x:int32): NimClass {. constructor:"NimClass('1 #1) : CppClass(0, #1) ".} =
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this.x = x
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#optinially define the default constructor so we get rid of the cpp warn and we can declare the obj (note: default constructor of 'tyObject_NimClass__apRyyO8cfRsZtsldq1rjKA' is implicitly deleted because base class 'CppClass' has no default constructor)
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proc makeCppClass(): NimClass {. constructor: "NimClass() : CppClass(0, 0) ".} =
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this.x = 1
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let nimClass = makeNimClass(1)
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var nimClassDef {.used.}: NimClass #since we explictly defined the default constructor we can declare the obj
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#bug: 22662
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type
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BugClass* = object
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x: int # Not initialized
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proc makeBugClass(): BugClass {.constructor.} =
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discard
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proc main =
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for i in 0 .. 1:
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var n = makeBugClass()
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echo n.x
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n.x = 123
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echo n.x
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main()
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#bug:
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echo "___"
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type
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NimClassWithDefault = object
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x: int
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y = 777
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case kind: bool = true
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of true:
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z: int = 10
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else: discard
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proc makeNimClassWithDefault(): NimClassWithDefault {.constructor.} =
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discard
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proc init =
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for i in 0 .. 1:
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var n = makeNimClassWithDefault()
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echo n.x
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echo n.y
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echo n.z
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n.x = 123
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echo n.x
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init() |