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Also return the method spans in utils::method_calls

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flip1995 2019-08-28 10:41:06 +02:00
parent 945d4cf69f
commit 832c0830ec
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1 changed files with 5 additions and 3 deletions
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8
clippy_lints/src/utils/mod.rs
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@ -339,25 +339,27 @@ pub fn resolve_node(cx: &LateContext<'_, '_>, qpath: &QPath, id: HirId) -> Res {
/// Returns the method names and argument list of nested method call expressions that make up
/// `expr`.
pub fn method_calls(expr: &Expr, max_depth: usize) -> (Vec<Symbol>, Vec<&[Expr]>) {
pub fn method_calls(expr: &Expr, max_depth: usize) -> (Vec<Symbol>, Vec<&[Expr]>, Vec<Span>) {
let mut method_names = Vec::with_capacity(max_depth);
let mut arg_lists = Vec::with_capacity(max_depth);
let mut spans = Vec::with_capacity(max_depth);
let mut current = expr;
for _ in 0..max_depth {
if let ExprKind::MethodCall(path, _, args) = &current.node {
if let ExprKind::MethodCall(path, span, args) = &current.node {
if args.iter().any(|e| e.span.from_expansion()) {
break;
}
method_names.push(path.ident.name);
arg_lists.push(&**args);
spans.push(*span);
current = &args[0];
} else {
break;
}
}
(method_names, arg_lists)
(method_names, arg_lists, spans)
}
/// Matches an `Expr` against a chain of methods, and return the matched `Expr`s.