35 lines
636 B
Rust
35 lines
636 B
Rust
#![warn(clippy::single_match_else)]
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enum ExprNode {
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ExprAddrOf,
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Butterflies,
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Unicorns,
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}
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static NODE: ExprNode = ExprNode::Unicorns;
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fn unwrap_addr() -> Option<&'static ExprNode> {
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match ExprNode::Butterflies {
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ExprNode::ExprAddrOf => Some(&NODE),
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_ => {
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let x = 5;
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None
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},
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}
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}
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macro_rules! unwrap_addr {
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($expression:expr) => {
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match $expression {
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ExprNode::ExprAddrOf => Some(&NODE),
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_ => {
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let x = 5;
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None
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},
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}
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};
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}
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fn main() {
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unwrap_addr!(ExprNode::Unicorns);
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}
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