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26b86c8f4d
implements https://github.com/nim-lang/RFCs/issues/557 It inserts defect handing into a bare except branch ```nim try: raiseAssert "test" except: echo "nope" ``` => ```nim try: raiseAssert "test" except: # New behaviov, now well-defined: **never** catches the assert, regardless of panic mode raiseDefect() echo "nope" ``` In this way, `except` still catches foreign exceptions, but panics on `Defect`. Probably when Nim has `except {.foreign.}`, we can extend `raiseDefect` to foreign exceptions as well. That's supposed to be a small use case anyway. `--legacy:noPanicOnExcept` is provided for a transition period.
23 lines
427 B
Nim
23 lines
427 B
Nim
discard """
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matrix: "--legacy:noPanicOnExcept"
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"""
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import options
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type Foo = ref object
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i: int
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proc next(foo: Foo): Option[Foo] =
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try: doAssert(foo.i == 0)
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except: return # 2º: none
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return some(foo) # 1º: some
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proc test =
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let foo = Foo()
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var opt = next(foo) # 1º Some
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while isSome(opt) and foo.i < 10:
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inc(foo.i)
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opt = next(foo) # 2º None
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doAssert foo.i == 1, $foo.i
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test()
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