#![deny(clippy::missing_docs_in_private_items)]
use crate::utils::{higher, snippet, snippet_opt, snippet_with_macro_callsite};
-use matches::matches;
use rustc_ast::util::parser::AssocOp;
use rustc_ast::{ast, token};
use rustc_ast_pretty::pprust::token_kind_to_string;
#[allow(clippy::wrong_self_convention)] // ok, because of the function `as_ty` method
impl<'a> Sugg<'a> {
/// Prepare a suggestion from an expression.
- pub fn hir_opt(cx: &LateContext<'_, '_>, expr: &hir::Expr<'_>) -> Option<Self> {
+ pub fn hir_opt(cx: &LateContext<'_>, expr: &hir::Expr<'_>) -> Option<Self> {
snippet_opt(cx, expr.span).map(|snippet| {
let snippet = Cow::Owned(snippet);
Self::hir_from_snippet(cx, expr, snippet)
/// Convenience function around `hir_opt` for suggestions with a default
/// text.
- pub fn hir(cx: &LateContext<'_, '_>, expr: &hir::Expr<'_>, default: &'a str) -> Self {
+ pub fn hir(cx: &LateContext<'_>, expr: &hir::Expr<'_>, default: &'a str) -> Self {
Self::hir_opt(cx, expr).unwrap_or_else(|| Sugg::NonParen(Cow::Borrowed(default)))
}
/// to
/// `HasPlaceholders`
pub fn hir_with_applicability(
- cx: &LateContext<'_, '_>,
+ cx: &LateContext<'_>,
expr: &hir::Expr<'_>,
default: &'a str,
applicability: &mut Applicability,
}
/// Same as `hir`, but will use the pre expansion span if the `expr` was in a macro.
- pub fn hir_with_macro_callsite(cx: &LateContext<'_, '_>, expr: &hir::Expr<'_>, default: &'a str) -> Self {
+ pub fn hir_with_macro_callsite(cx: &LateContext<'_>, expr: &hir::Expr<'_>, default: &'a str) -> Self {
let snippet = snippet_with_macro_callsite(cx, expr.span, default);
Self::hir_from_snippet(cx, expr, snippet)
/// Generate a suggestion for an expression with the given snippet. This is used by the `hir_*`
/// function variants of `Sugg`, since these use different snippet functions.
- fn hir_from_snippet(cx: &LateContext<'_, '_>, expr: &hir::Expr<'_>, snippet: Cow<'a, str>) -> Self {
+ fn hir_from_snippet(cx: &LateContext<'_>, expr: &hir::Expr<'_>, snippet: Cow<'a, str>) -> Self {
if let Some(range) = higher::range(cx, expr) {
let op = match range.limits {
ast::RangeLimits::HalfOpen => AssocOp::DotDot,
| hir::ExprKind::Field(..)
| hir::ExprKind::Index(..)
| hir::ExprKind::InlineAsm(..)
+ | hir::ExprKind::LlvmInlineAsm(..)
| hir::ExprKind::Lit(..)
| hir::ExprKind::Loop(..)
| hir::ExprKind::MethodCall(..)
| ast::ExprKind::ForLoop(..)
| ast::ExprKind::Index(..)
| ast::ExprKind::InlineAsm(..)
+ | ast::ExprKind::LlvmInlineAsm(..)
| ast::ExprKind::Lit(..)
| ast::ExprKind::Loop(..)
- | ast::ExprKind::Mac(..)
+ | ast::ExprKind::MacCall(..)
| ast::ExprKind::MethodCall(..)
| ast::ExprKind::Paren(..)
| ast::ExprKind::Path(..)
/// parenthesis will always be added for a mix of these.
pub fn make_assoc(op: AssocOp, lhs: &Sugg<'_>, rhs: &Sugg<'_>) -> Sugg<'static> {
/// Returns `true` if the operator is a shift operator `<<` or `>>`.
- fn is_shift(op: &AssocOp) -> bool {
- matches!(*op, AssocOp::ShiftLeft | AssocOp::ShiftRight)
+ fn is_shift(op: AssocOp) -> bool {
+ matches!(op, AssocOp::ShiftLeft | AssocOp::ShiftRight)
}
/// Returns `true` if the operator is a arithmetic operator
/// (i.e., `+`, `-`, `*`, `/`, `%`).
- fn is_arith(op: &AssocOp) -> bool {
+ fn is_arith(op: AssocOp) -> bool {
matches!(
- *op,
+ op,
AssocOp::Add | AssocOp::Subtract | AssocOp::Multiply | AssocOp::Divide | AssocOp::Modulus
)
}
/// Returns `true` if the operator `op` needs parenthesis with the operator
/// `other` in the direction `dir`.
- fn needs_paren(op: &AssocOp, other: &AssocOp, dir: Associativity) -> bool {
+ fn needs_paren(op: AssocOp, other: AssocOp, dir: Associativity) -> bool {
other.precedence() < op.precedence()
|| (other.precedence() == op.precedence()
&& ((op != other && associativity(op) != dir)
|| is_shift(other) && is_arith(op)
}
- let lhs_paren = if let Sugg::BinOp(ref lop, _) = *lhs {
- needs_paren(&op, lop, Associativity::Left)
+ let lhs_paren = if let Sugg::BinOp(lop, _) = *lhs {
+ needs_paren(op, lop, Associativity::Left)
} else {
false
};
- let rhs_paren = if let Sugg::BinOp(ref rop, _) = *rhs {
- needs_paren(&op, rop, Associativity::Right)
+ let rhs_paren = if let Sugg::BinOp(rop, _) = *rhs {
+ needs_paren(op, rop, Associativity::Right)
} else {
false
};
/// they are considered
/// associative.
#[must_use]
-fn associativity(op: &AssocOp) -> Associativity {
+fn associativity(op: AssocOp) -> Associativity {
use rustc_ast::util::parser::AssocOp::{
Add, As, Assign, AssignOp, BitAnd, BitOr, BitXor, Colon, Divide, DotDot, DotDotEq, Equal, Greater,
GreaterEqual, LAnd, LOr, Less, LessEqual, Modulus, Multiply, NotEqual, ShiftLeft, ShiftRight, Subtract,
};
- match *op {
+ match op {
Assign | AssignOp(_) => Associativity::Right,
Add | BitAnd | BitOr | BitXor | LAnd | LOr | Multiply | As | Colon => Associativity::Both,
Divide | Equal | Greater | GreaterEqual | Less | LessEqual | Modulus | NotEqual | ShiftLeft | ShiftRight
/// before it on its line.
fn indentation<T: LintContext>(cx: &T, span: Span) -> Option<String> {
let lo = cx.sess().source_map().lookup_char_pos(span.lo());
- if let Some(line) = lo.file.get_line(lo.line - 1 /* line numbers in `Loc` are 1-based */) {
- if let Some((pos, _)) = line.char_indices().find(|&(_, c)| c != ' ' && c != '\t') {
+ lo.file.get_line(lo.line - 1 /* line numbers in `Loc` are 1-based */).and_then(|line| if let Some((pos, _)) = line.char_indices().find(|&(_, c)| c != ' ' && c != '\t') {
// We can mix char and byte positions here because we only consider `[ \t]`.
if lo.col == CharPos(pos) {
Some(line[..pos].into())
}
} else {
None
- }
- } else {
- None
- }
+ })
}
/// Convenience extension trait for `DiagnosticBuilder`.
-pub trait DiagnosticBuilderExt<'a, T: LintContext> {
+pub trait DiagnosticBuilderExt<T: LintContext> {
/// Suggests to add an attribute to an item.
///
/// Correctly handles indentation of the attribute and item.
/// # Example
///
/// ```rust,ignore
- /// db.suggest_item_with_attr(cx, item, "#[derive(Default)]");
+ /// diag.suggest_item_with_attr(cx, item, "#[derive(Default)]");
/// ```
fn suggest_item_with_attr<D: Display + ?Sized>(
&mut self,
/// Suggest to add an item before another.
///
- /// The item should not be indented (expect for inner indentation).
+ /// The item should not be indented (except for inner indentation).
///
/// # Example
///
/// ```rust,ignore
- /// db.suggest_prepend_item(cx, item,
+ /// diag.suggest_prepend_item(cx, item,
/// "fn foo() {
/// bar();
/// }");
/// # Example
///
/// ```rust,ignore
- /// db.suggest_remove_item(cx, item, "remove this")
+ /// diag.suggest_remove_item(cx, item, "remove this")
/// ```
fn suggest_remove_item(&mut self, cx: &T, item: Span, msg: &str, applicability: Applicability);
}
-impl<'a, 'b, 'c, T: LintContext> DiagnosticBuilderExt<'c, T> for rustc_errors::DiagnosticBuilder<'b> {
+impl<T: LintContext> DiagnosticBuilderExt<T> for rustc_errors::DiagnosticBuilder<'_> {
fn suggest_item_with_attr<D: Display + ?Sized>(
&mut self,
cx: &T,
projects / rust.git / blobdiff