61 lines
3.1 KiB
Plaintext
61 lines
3.1 KiB
Plaintext
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if_chain! {
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if let Expr_::ExprBlock(ref block) = expr.node;
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if let Stmt_::StmtDecl(ref decl, _) = block.node
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if let Decl_::DeclLocal(ref local) = decl.node;
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if let Some(ref init) = local.init
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if let Expr_::ExprMatch(ref expr, ref arms, MatchSource::ForLoopDesugar) = init.node;
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if let Expr_::ExprCall(ref func, ref args) = expr.node;
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// unimplemented: `ExprCall` is not further destructured at the moment
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if arms.len() == 1;
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if let Expr_::ExprLoop(ref body, ref label, LoopSource::ForLoop) = arms[0].body.node;
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if let Stmt_::StmtDecl(ref decl1, _) = body.node
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if let Decl_::DeclLocal(ref local1) = decl1.node;
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if let PatKind::Binding(BindingAnnotation::Mutable, _, name, None) = local1.pat.node;
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if name.node.as_str() == "__next";
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if let Stmt_::StmtExpr(ref e, _) = local1.pat.node
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if let Expr_::ExprMatch(ref expr1, ref arms1, MatchSource::ForLoopDesugar) = e.node;
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if let Expr_::ExprCall(ref func, ref args) = expr1.node;
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// unimplemented: `ExprCall` is not further destructured at the moment
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if arms1.len() == 2;
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if let Expr_::ExprAssign(ref target, ref value) = arms1[0].body.node;
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if let Expr_::ExprPath(ref path) = target.node;
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if match_qpath(path, &["__next"]);
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if let Expr_::ExprPath(ref path1) = value.node;
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if match_qpath(path1, &["val"]);
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if arms1[0].pats.len() == 1;
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if let PatKind::TupleStruct(ref path2, ref fields, None) = arms1[0].pats[0].node;
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if match_qpath(path2, &["{{root}}", "std", "option", "Option", "Some"]);
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if fields.len() == 1;
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// unimplemented: field checks
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if let Expr_::ExprBreak(ref destination, None) = arms1[1].body.node;
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if arms1[1].pats.len() == 1;
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if let PatKind::Path(ref path3) = arms1[1].pats[0].node;
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if match_qpath(path3, &["{{root}}", "std", "option", "Option", "None"]);
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if let Stmt_::StmtDecl(ref decl2, _) = path3.node
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if let Decl_::DeclLocal(ref local2) = decl2.node;
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if let Some(ref init1) = local2.init
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if let Expr_::ExprPath(ref path4) = init1.node;
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if match_qpath(path4, &["__next"]);
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if let PatKind::Binding(BindingAnnotation::Unannotated, _, name1, None) = local2.pat.node;
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if name1.node.as_str() == "y";
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if let Stmt_::StmtExpr(ref e1, _) = local2.pat.node
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if let Expr_::ExprBlock(ref block1) = e1.node;
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if let Stmt_::StmtDecl(ref decl3, _) = block1.node
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if let Decl_::DeclLocal(ref local3) = decl3.node;
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if let Some(ref init2) = local3.init
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if let Expr_::ExprPath(ref path5) = init2.node;
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if match_qpath(path5, &["y"]);
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if let PatKind::Binding(BindingAnnotation::Unannotated, _, name2, None) = local3.pat.node;
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if name2.node.as_str() == "z";
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if arms[0].pats.len() == 1;
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if let PatKind::Binding(BindingAnnotation::Mutable, _, name3, None) = arms[0].pats[0].node;
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if name3.node.as_str() == "iter";
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if let PatKind::Binding(BindingAnnotation::Unannotated, _, name4, None) = local.pat.node;
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if name4.node.as_str() == "_result";
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if let Expr_::ExprPath(ref path6) = local.pat.node;
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if match_qpath(path6, &["_result"]);
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then {
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// report your lint here
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}
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}
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