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discard """
cmd: "nim cpp $file"
"""
{.emit:"""/*TYPESECTION*/
struct CppStruct {
CppStruct(int x, char* y): x(x), y(y){}
void doSomething() {}
int x;
char* y;
};
""".}
type
CppStruct {.importcpp, inheritable.} = object
ChildStruct = object of CppStruct
HasCppStruct = object
cppstruct: CppStruct
proc constructCppStruct(a:cint = 5, b:cstring = "hello"): CppStruct {.importcpp: "CppStruct(@)", constructor.}
proc doSomething(this: CppStruct) {.importcpp.}
proc returnCppStruct(): CppStruct = discard
proc initChildStruct: ChildStruct = ChildStruct()
proc makeChildStruct(): ChildStruct {.constructor:"""ChildStruct(): CppStruct(5, "10")""".} = discard
proc initHasCppStruct(x: cint): HasCppStruct =
HasCppStruct(cppstruct: constructCppStruct(x))
proc main =
var hasCppStruct = initHasCppStruct(2) #generates cppstruct = { 10 } inside the struct
hasCppStruct.cppstruct.doSomething()
discard returnCppStruct() #generates result = { 10 }
discard initChildStruct() #generates ChildStruct temp ({}) bypassed with makeChildStruct
(proc (s:CppStruct) = discard)(CppStruct()) #CppStruct temp ({10})
main()
#Should handle ObjectCalls
{.emit:"""/*TYPESECTION*/
struct Foo {
};
struct Boo {
Boo(int x, char* y, Foo f): x(x), y(y), foo(f){}
int x;
char* y;
Foo foo;
};
""".}
type
Foo {.importcpp, inheritable, bycopy.} = object
Boo {.importcpp, inheritable.} = object
x: int32
y: cstring
foo: Foo
proc makeBoo(a:cint = 10, b:cstring = "hello", foo: Foo = Foo()): Boo {.importcpp, constructor.}
proc main2() =
let cppStruct = makeBoo()
(proc (s:Boo) = discard)(Boo())
main2()
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