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write.rs: don't clone TokenStream

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This commit is contained in:
Matthias Krüger 2020-08-12 14:27:06 +02:00
parent 3337f7956c
commit 8a96b9cdfe
1 changed files with 5 additions and 11 deletions
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16
clippy_lints/src/write.rs
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@ -237,7 +237,7 @@ impl EarlyLintPass for Write {
fn check_mac(&mut self, cx: &EarlyContext<'_>, mac: &MacCall) {
if mac.path == sym!(println) {
span_lint(cx, PRINT_STDOUT, mac.span(), "use of `println!`");
if let (Some(fmt_str), _) = self.check_tts(cx, &mac.args.inner_tokens(), false) {
if let (Some(fmt_str), _) = self.check_tts(cx, mac.args.inner_tokens(), false) {
if fmt_str.symbol == Symbol::intern("") {
span_lint_and_sugg(
cx,
@ -252,7 +252,7 @@ impl EarlyLintPass for Write {
}
} else if mac.path == sym!(print) {
span_lint(cx, PRINT_STDOUT, mac.span(), "use of `print!`");
if let (Some(fmt_str), _) = self.check_tts(cx, &mac.args.inner_tokens(), false) {
if let (Some(fmt_str), _) = self.check_tts(cx, mac.args.inner_tokens(), false) {
if check_newlines(&fmt_str) {
span_lint_and_then(
cx,
@ -273,7 +273,7 @@ impl EarlyLintPass for Write {
}
}
} else if mac.path == sym!(write) {
if let (Some(fmt_str), _) = self.check_tts(cx, &mac.args.inner_tokens(), true) {
if let (Some(fmt_str), _) = self.check_tts(cx, mac.args.inner_tokens(), true) {
if check_newlines(&fmt_str) {
span_lint_and_then(
cx,
@ -294,7 +294,7 @@ impl EarlyLintPass for Write {
}
}
} else if mac.path == sym!(writeln) {
if let (Some(fmt_str), expr) = self.check_tts(cx, &mac.args.inner_tokens(), true) {
if let (Some(fmt_str), expr) = self.check_tts(cx, mac.args.inner_tokens(), true) {
if fmt_str.symbol == Symbol::intern("") {
let mut applicability = Applicability::MachineApplicable;
let suggestion = expr.map_or_else(
@ -364,17 +364,11 @@ impl Write {
/// (Some("string to write: {}"), Some(buf))
/// ```
#[allow(clippy::too_many_lines)]
fn check_tts<'a>(
&self,
cx: &EarlyContext<'a>,
tts: &TokenStream,
is_write: bool,
) -> (Option<StrLit>, Option<Expr>) {
fn check_tts<'a>(&self, cx: &EarlyContext<'a>, tts: TokenStream, is_write: bool) -> (Option<StrLit>, Option<Expr>) {
use rustc_parse_format::{
AlignUnknown, ArgumentImplicitlyIs, ArgumentIs, ArgumentNamed, CountImplied, FormatSpec, ParseMode, Parser,
Piece,
};
let tts = tts.clone();
let mut parser = parser::Parser::new(&cx.sess.parse_sess, tts, false, None);
let mut expr: Option<Expr> = None;