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discard """
targets: cpp
"""
# manual example
type
CStdException {.importcpp: "std::exception", header: "<exception>", inheritable.} = object
## does not inherit from `RootObj`, so we use `inheritable` instead
CRuntimeError {.requiresInit, importcpp: "std::runtime_error", header: "<stdexcept>".} = object of CStdException
## `CRuntimeError` has no default constructor => `requiresInit`
proc what(s: CStdException): cstring {.importcpp: "((char *)#.what())".}
proc initRuntimeError(a: cstring): CRuntimeError {.importcpp: "std::runtime_error(@)", constructor.}
proc initStdException(): CStdException {.importcpp: "std::exception()", constructor.}
proc fn() =
let a = initRuntimeError("foo")
doAssert $a.what == "foo"
var b = ""
try: raise initRuntimeError("foo2")
except CStdException as e:
doAssert e is CStdException
b = $e.what()
doAssert b == "foo2"
try: raise initStdException()
except CStdException: discard
try: raise initRuntimeError("foo3")
except CRuntimeError as e:
b = $e.what()
except CStdException:
doAssert false
doAssert b == "foo3"
fn()
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