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if let StmtKind::Let(local) = stmt.kind
&& let Some(init) = local.init
&& let ExprKind::Match(scrutinee, arms, MatchSource::Normal) = init.kind
&& let ExprKind::Lit(ref lit) = scrutinee.kind
&& let LitKind::Int(42, LitIntType::Unsuffixed) = lit.node
&& arms.len() == 3
&& let PatKind::Expr(lit_expr) = arms[0].pat.kind
&& let PatExprKind::Lit { ref lit1, negated } = lit_expr.kind
&& let LitKind::Int(16, LitIntType::Unsuffixed) = lit1.node
&& arms[0].guard.is_none()
&& let ExprKind::Lit(ref lit2) = arms[0].body.kind
&& let LitKind::Int(5, LitIntType::Unsuffixed) = lit2.node
&& let PatKind::Expr(lit_expr1) = arms[1].pat.kind
&& let PatExprKind::Lit { ref lit3, negated1 } = lit_expr1.kind
&& let LitKind::Int(17, LitIntType::Unsuffixed) = lit3.node
&& arms[1].guard.is_none()
&& let ExprKind::Block(block, None) = arms[1].body.kind
&& block.stmts.len() == 1
&& let StmtKind::Let(local1) = block.stmts[0].kind
&& let Some(init1) = local1.init
&& let ExprKind::Lit(ref lit4) = init1.kind
&& let LitKind::Int(3, LitIntType::Unsuffixed) = lit4.node
&& let PatKind::Binding(BindingMode::NONE, _, name, None) = local1.pat.kind
&& name.as_str() == "x"
&& let Some(trailing_expr) = block.expr
&& let PatKind::Wild = arms[2].pat.kind
&& arms[2].guard.is_none()
&& let ExprKind::Lit(ref lit5) = arms[2].body.kind
&& let LitKind::Int(1, LitIntType::Unsuffixed) = lit5.node
&& let PatKind::Binding(BindingMode::NONE, _, name1, None) = local.pat.kind
&& name1.as_str() == "a"
{
// report your lint here
}
|
