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vm: don't panic if there is no result in PopResult()

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This function is intended to be ran outside of the execute's panic recovery
mechanism, so it shouldn't panic if there is no result.
This commit is contained in:
Roman Khimov 2019-10-03 16:02:15 +03:00
parent a357d99624
commit 705c7f106f
1 changed files with 5 additions and 1 deletions
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6
pkg/vm/vm.go
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@ -187,7 +187,11 @@ func (v *VM) Context() *Context {
// PopResult is used to pop the first item of the evaluation stack. This allows
// us to test compiler and vm in a bi-directional way.
func (v *VM) PopResult() interface{} {
return v.estack.Pop().value.Value()
e := v.estack.Pop()
if e != nil {
return e.Value()
}
return nil
}
// Stack returns json formatted representation of the given stack.