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compiler: support recover()

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This commit is contained in:
Evgenii Stratonikov 2020-08-21 15:37:46 +03:00
parent 14ea3c2228
commit 5d82b82efb
4 changed files with 153 additions and 9 deletions
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57
pkg/compiler/defer_test.go
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@ -80,3 +80,60 @@ func TestDefer(t *testing.T) {
eval(t, src, big.NewInt(13))
})
}
func TestRecover(t *testing.T) {
t.Run("Panic", func(t *testing.T) {
src := `package foo
var a int
func Main() int {
return h() + a
}
func h() int {
defer func() {
if r := recover(); r != nil {
a = 3
} else {
a = 4
}
}()
a = 1
panic("msg")
return a
}`
eval(t, src, big.NewInt(3))
})
t.Run("NoPanic", func(t *testing.T) {
src := `package foo
var a int
func Main() int {
return h() + a
}
func h() int {
defer func() {
if r := recover(); r != nil {
a = 3
} else {
a = 4
}
}()
a = 1
return a
}`
eval(t, src, big.NewInt(5))
})
t.Run("PanicInDefer", func(t *testing.T) {
src := `package foo
var a int
func Main() int {
return h() + a
}
func h() int {
defer func() { a += 2; _ = recover() }()
defer func() { a *= 3; _ = recover(); panic("again") }()
a = 1
panic("msg")
return a
}`
eval(t, src, big.NewInt(5))
})
}