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recover on 'mut ' and improve recovery for keywords.
This commit is contained in:
parent
e49b9581ba
commit
f908aa9e80
@ -4,6 +4,7 @@ use crate::{maybe_recover_from_interpolated_ty_qpath, maybe_whole};
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use crate::ptr::P;
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use crate::ast::{self, Attribute, Pat, PatKind, FieldPat, RangeEnd, RangeSyntax, Mac};
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use crate::ast::{BindingMode, Ident, Mutability, Path, QSelf, Expr, ExprKind};
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use crate::mut_visit::{noop_visit_pat, MutVisitor};
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use crate::parse::token::{self};
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use crate::print::pprust;
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use crate::source_map::{respan, Span, Spanned};
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@ -273,7 +274,7 @@ impl<'a> Parser<'a> {
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// Parse _
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PatKind::Wild
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} else if self.eat_keyword(kw::Mut) {
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self.recover_pat_ident_mut_first()?
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self.parse_pat_ident_mut()?
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} else if self.eat_keyword(kw::Ref) {
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// Parse ref ident @ pat / ref mut ident @ pat
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let mutbl = self.parse_mutability();
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@ -281,13 +282,12 @@ impl<'a> Parser<'a> {
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} else if self.eat_keyword(kw::Box) {
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// Parse `box pat`
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PatKind::Box(self.parse_pat_with_range_pat(false, None)?)
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} else if self.token.is_ident() && !self.token.is_reserved_ident() &&
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self.parse_as_ident() {
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} else if self.can_be_ident_pat() {
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// Parse `ident @ pat`
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// This can give false positives and parse nullary enums,
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// they are dealt with later in resolve.
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self.parse_pat_ident(BindingMode::ByValue(Mutability::Immutable))?
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} else if self.token.is_path_start() {
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} else if self.is_start_of_pat_with_path() {
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// Parse pattern starting with a path
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let (qself, path) = if self.eat_lt() {
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// Parse a qualified path
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@ -384,24 +384,85 @@ impl<'a> Parser<'a> {
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})
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}
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fn parse_pat_ident_mut(&mut self) -> PResult<'a, PatKind> {
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let mut_span = self.prev_span;
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if self.eat_keyword(kw::Ref) {
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return self.recover_mut_ref_ident(mut_span)
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}
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self.recover_additional_muts();
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let mut pat = self.parse_pat(Some("identifier"))?;
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// Add `mut` to any binding in the parsed pattern.
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struct AddMut;
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impl MutVisitor for AddMut {
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fn visit_pat(&mut self, pat: &mut P<Pat>) {
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if let PatKind::Ident(BindingMode::ByValue(ref mut m), ..) = pat.node {
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*m = Mutability::Mutable;
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}
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noop_visit_pat(pat, self);
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}
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}
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AddMut.visit_pat(&mut pat);
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// Unwrap; If we don't have `mut $ident`, error.
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let pat = pat.into_inner();
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match &pat.node {
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PatKind::Ident(..) => {}
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_ => self.ban_mut_general_pat(mut_span, &pat),
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}
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Ok(pat.node)
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}
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/// Recover on `mut ref? ident @ pat` and suggest
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/// that the order of `mut` and `ref` is incorrect.
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fn recover_pat_ident_mut_first(&mut self) -> PResult<'a, PatKind> {
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let mutref_span = self.prev_span.to(self.token.span);
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let binding_mode = if self.eat_keyword(kw::Ref) {
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self.struct_span_err(mutref_span, "the order of `mut` and `ref` is incorrect")
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.span_suggestion(
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mutref_span,
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"try switching the order",
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"ref mut".into(),
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Applicability::MachineApplicable
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)
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.emit();
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BindingMode::ByRef(Mutability::Mutable)
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} else {
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BindingMode::ByValue(Mutability::Mutable)
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};
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self.parse_pat_ident(binding_mode)
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fn recover_mut_ref_ident(&mut self, lo: Span) -> PResult<'a, PatKind> {
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let mutref_span = lo.to(self.prev_span);
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self.struct_span_err(mutref_span, "the order of `mut` and `ref` is incorrect")
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.span_suggestion(
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mutref_span,
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"try switching the order",
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"ref mut".into(),
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Applicability::MachineApplicable
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)
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.emit();
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self.parse_pat_ident(BindingMode::ByRef(Mutability::Mutable))
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}
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/// Error on `mut $pat` where `$pat` is not an ident.
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fn ban_mut_general_pat(&self, lo: Span, pat: &Pat) {
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let span = lo.to(pat.span);
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self.struct_span_err(span, "`mut` must be attached to each individual binding")
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.span_suggestion(
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span,
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"add `mut` to each binding",
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pprust::pat_to_string(&pat),
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Applicability::MachineApplicable,
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)
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.emit();
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}
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/// Eat any extraneous `mut`s and error + recover if we ate any.
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fn recover_additional_muts(&mut self) {
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let lo = self.token.span;
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while self.eat_keyword(kw::Mut) {}
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if lo == self.token.span {
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return;
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}
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let span = lo.to(self.prev_span);
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self.struct_span_err(span, "`mut` on a binding may not be repeated")
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.span_suggestion(
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span,
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"remove the additional `mut`s",
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String::new(),
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Applicability::MachineApplicable,
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)
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.emit();
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}
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/// Parse macro invocation
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@ -479,17 +540,6 @@ impl<'a> Parser<'a> {
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Err(err)
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}
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// Helper function to decide whether to parse as ident binding
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// or to try to do something more complex like range patterns.
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fn parse_as_ident(&mut self) -> bool {
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self.look_ahead(1, |t| match t.kind {
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token::OpenDelim(token::Paren) | token::OpenDelim(token::Brace) |
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token::DotDotDot | token::DotDotEq | token::DotDot |
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token::ModSep | token::Not => false,
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_ => true,
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})
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}
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/// Is the current token suitable as the start of a range patterns end?
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fn is_pat_range_end_start(&self) -> bool {
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self.token.is_path_start() // e.g. `MY_CONST`;
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@ -563,6 +613,30 @@ impl<'a> Parser<'a> {
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}
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}
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/// Is this the start of a pattern beginning with a path?
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fn is_start_of_pat_with_path(&mut self) -> bool {
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self.check_path()
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// Just for recovery (see `can_be_ident`).
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|| self.token.is_ident() && !self.token.is_bool_lit() && !self.token.is_keyword(kw::In)
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}
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/// Would `parse_pat_ident` be appropriate here?
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fn can_be_ident_pat(&mut self) -> bool {
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self.check_ident()
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&& !self.token.is_bool_lit() // Avoid `true` or `false` as a binding as it is a literal.
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&& !self.token.is_path_segment_keyword() // Avoid e.g. `Self` as it is a path.
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// Avoid `in`. Due to recovery in the list parser this messes with `for ( $pat in $expr )`.
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&& !self.token.is_keyword(kw::In)
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&& self.look_ahead(1, |t| match t.kind { // Try to do something more complex?
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token::OpenDelim(token::Paren) // A tuple struct pattern.
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| token::OpenDelim(token::Brace) // A struct pattern.
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| token::DotDotDot | token::DotDotEq | token::DotDot // A range pattern.
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| token::ModSep // A tuple / struct variant pattern.
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| token::Not => false, // A macro expanding to a pattern.
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_ => true,
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})
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}
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/// Parses `ident` or `ident @ pat`.
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/// Used by the copy foo and ref foo patterns to give a good
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/// error message when parsing mistakes like `ref foo(a, b)`.
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@ -1,3 +1,3 @@
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fn main() {
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let extern = 0; //~ ERROR expected pattern, found keyword `extern`
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let extern = 0; //~ ERROR expected identifier, found keyword `extern`
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}
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@ -1,8 +1,12 @@
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error: expected pattern, found keyword `extern`
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error: expected identifier, found keyword `extern`
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--> $DIR/keyword-extern-as-identifier-pat.rs:2:9
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LL | let extern = 0;
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| ^^^^^^ expected pattern
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| ^^^^^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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LL | let r#extern = 0;
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| ^^^^^^^^
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error: aborting due to previous error
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@ -4,5 +4,6 @@ fn main() {
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let _ = 0;
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let mut b = 0;
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let mut _b = 0;
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let mut _ = 0; //~ ERROR expected identifier, found reserved identifier `_`
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let mut _ = 0;
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//~^ ERROR `mut` must be attached to each individual binding
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}
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@ -1,8 +1,8 @@
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error: expected identifier, found reserved identifier `_`
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--> $DIR/issue-32501.rs:7:13
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error: `mut` must be attached to each individual binding
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--> $DIR/issue-32501.rs:7:9
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LL | let mut _ = 0;
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| ^ expected identifier, found reserved identifier
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| ^^^^^ help: add `mut` to each binding: `_`
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error: aborting due to previous error
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@ -1,3 +1,3 @@
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fn main() {
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let abstract = (); //~ ERROR expected pattern, found reserved keyword `abstract`
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let abstract = (); //~ ERROR expected identifier, found reserved keyword `abstract`
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}
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error: expected pattern, found reserved keyword `abstract`
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error: expected identifier, found reserved keyword `abstract`
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--> $DIR/keyword-abstract.rs:2:9
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LL | let abstract = ();
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| ^^^^^^^^ expected pattern
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| ^^^^^^^^ expected identifier, found reserved keyword
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help: you can escape reserved keywords to use them as identifiers
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LL | let r#abstract = ();
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| ^^^^^^^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py as'
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fn main() {
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let as = "foo"; //~ error: expected pattern, found keyword `as`
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let as = "foo"; //~ error: expected identifier, found keyword `as`
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}
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error: expected pattern, found keyword `as`
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error: expected identifier, found keyword `as`
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--> $DIR/keyword-as-as-identifier.rs:4:9
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LL | let as = "foo";
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| ^^ expected pattern
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| ^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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LL | let r#as = "foo";
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| ^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py break'
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fn main() {
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let break = "foo"; //~ error: expected pattern, found keyword `break`
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let break = "foo"; //~ error: expected identifier, found keyword `break`
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}
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error: expected pattern, found keyword `break`
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error: expected identifier, found keyword `break`
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--> $DIR/keyword-break-as-identifier.rs:4:9
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LL | let break = "foo";
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| ^^^^^ expected pattern
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| ^^^^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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LL | let r#break = "foo";
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| ^^^^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py const'
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fn main() {
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let const = "foo"; //~ error: expected pattern, found keyword `const`
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let const = "foo"; //~ error: expected identifier, found keyword `const`
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}
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@ -1,8 +1,12 @@
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error: expected pattern, found keyword `const`
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error: expected identifier, found keyword `const`
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--> $DIR/keyword-const-as-identifier.rs:4:9
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LL | let const = "foo";
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| ^^^^^ expected pattern
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| ^^^^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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LL | let r#const = "foo";
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| ^^^^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py continue'
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fn main() {
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let continue = "foo"; //~ error: expected pattern, found keyword `continue`
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let continue = "foo"; //~ error: expected identifier, found keyword `continue`
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}
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@ -1,8 +1,12 @@
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error: expected pattern, found keyword `continue`
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error: expected identifier, found keyword `continue`
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--> $DIR/keyword-continue-as-identifier.rs:4:9
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LL | let continue = "foo";
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| ^^^^^^^^ expected pattern
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| ^^^^^^^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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LL | let r#continue = "foo";
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| ^^^^^^^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py else'
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fn main() {
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let else = "foo"; //~ error: expected pattern, found keyword `else`
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let else = "foo"; //~ error: expected identifier, found keyword `else`
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}
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error: expected pattern, found keyword `else`
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error: expected identifier, found keyword `else`
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--> $DIR/keyword-else-as-identifier.rs:4:9
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LL | let else = "foo";
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| ^^^^ expected pattern
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| ^^^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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LL | let r#else = "foo";
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| ^^^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py enum'
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fn main() {
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let enum = "foo"; //~ error: expected pattern, found keyword `enum`
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let enum = "foo"; //~ error: expected identifier, found keyword `enum`
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}
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@ -1,8 +1,12 @@
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error: expected pattern, found keyword `enum`
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error: expected identifier, found keyword `enum`
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--> $DIR/keyword-enum-as-identifier.rs:4:9
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LL | let enum = "foo";
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| ^^^^ expected pattern
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| ^^^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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|
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LL | let r#enum = "foo";
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| ^^^^^^
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error: aborting due to previous error
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@ -1,3 +1,3 @@
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fn main() {
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let final = (); //~ ERROR expected pattern, found reserved keyword `final`
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let final = (); //~ ERROR expected identifier, found reserved keyword `final`
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}
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@ -1,8 +1,12 @@
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error: expected pattern, found reserved keyword `final`
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error: expected identifier, found reserved keyword `final`
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--> $DIR/keyword-final.rs:2:9
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|
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LL | let final = ();
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| ^^^^^ expected pattern
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| ^^^^^ expected identifier, found reserved keyword
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help: you can escape reserved keywords to use them as identifiers
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|
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LL | let r#final = ();
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| ^^^^^^^
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error: aborting due to previous error
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|
@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py fn'
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fn main() {
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let fn = "foo"; //~ error: expected pattern, found keyword `fn`
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let fn = "foo"; //~ error: expected identifier, found keyword `fn`
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}
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@ -1,8 +1,12 @@
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error: expected pattern, found keyword `fn`
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error: expected identifier, found keyword `fn`
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--> $DIR/keyword-fn-as-identifier.rs:4:9
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|
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LL | let fn = "foo";
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| ^^ expected pattern
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| ^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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|
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LL | let r#fn = "foo";
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| ^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py for'
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fn main() {
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let for = "foo"; //~ error: expected pattern, found keyword `for`
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let for = "foo"; //~ error: expected identifier, found keyword `for`
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}
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error: expected pattern, found keyword `for`
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error: expected identifier, found keyword `for`
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--> $DIR/keyword-for-as-identifier.rs:4:9
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|
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LL | let for = "foo";
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| ^^^ expected pattern
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| ^^^ expected identifier, found keyword
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help: you can escape reserved keywords to use them as identifiers
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|
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LL | let r#for = "foo";
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| ^^^^^
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error: aborting due to previous error
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@ -1,5 +1,5 @@
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// This file was auto-generated using 'src/etc/generate-keyword-tests.py if'
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fn main() {
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let if = "foo"; //~ error: expected pattern, found keyword `if`
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let if = "foo"; //~ error: expected identifier, found keyword `if`
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}
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error: expected pattern, found keyword `if`
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error: expected identifier, found keyword `if`
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--> $DIR/keyword-if-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let if = "foo";
|
||||
| ^^ expected pattern
|
||||
| ^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#if = "foo";
|
||||
| ^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py impl'
|
||||
|
||||
fn main() {
|
||||
let impl = "foo"; //~ error: expected pattern, found keyword `impl`
|
||||
let impl = "foo"; //~ error: expected identifier, found keyword `impl`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `impl`
|
||||
error: expected identifier, found keyword `impl`
|
||||
--> $DIR/keyword-impl-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let impl = "foo";
|
||||
| ^^^^ expected pattern
|
||||
| ^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#impl = "foo";
|
||||
| ^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py let'
|
||||
|
||||
fn main() {
|
||||
let let = "foo"; //~ error: expected pattern, found keyword `let`
|
||||
let let = "foo"; //~ error: expected identifier, found keyword `let`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `let`
|
||||
error: expected identifier, found keyword `let`
|
||||
--> $DIR/keyword-let-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let let = "foo";
|
||||
| ^^^ expected pattern
|
||||
| ^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#let = "foo";
|
||||
| ^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py loop'
|
||||
|
||||
fn main() {
|
||||
let loop = "foo"; //~ error: expected pattern, found keyword `loop`
|
||||
let loop = "foo"; //~ error: expected identifier, found keyword `loop`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `loop`
|
||||
error: expected identifier, found keyword `loop`
|
||||
--> $DIR/keyword-loop-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let loop = "foo";
|
||||
| ^^^^ expected pattern
|
||||
| ^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#loop = "foo";
|
||||
| ^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py match'
|
||||
|
||||
fn main() {
|
||||
let match = "foo"; //~ error: expected pattern, found keyword `match`
|
||||
let match = "foo"; //~ error: expected identifier, found keyword `match`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `match`
|
||||
error: expected identifier, found keyword `match`
|
||||
--> $DIR/keyword-match-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let match = "foo";
|
||||
| ^^^^^ expected pattern
|
||||
| ^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#match = "foo";
|
||||
| ^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py mod'
|
||||
|
||||
fn main() {
|
||||
let mod = "foo"; //~ error: expected pattern, found keyword `mod`
|
||||
let mod = "foo"; //~ error: expected identifier, found keyword `mod`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `mod`
|
||||
error: expected identifier, found keyword `mod`
|
||||
--> $DIR/keyword-mod-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let mod = "foo";
|
||||
| ^^^ expected pattern
|
||||
| ^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#mod = "foo";
|
||||
| ^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py move'
|
||||
|
||||
fn main() {
|
||||
let move = "foo"; //~ error: expected pattern, found keyword `move`
|
||||
let move = "foo"; //~ error: expected identifier, found keyword `move`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `move`
|
||||
error: expected identifier, found keyword `move`
|
||||
--> $DIR/keyword-move-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let move = "foo";
|
||||
| ^^^^ expected pattern
|
||||
| ^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#move = "foo";
|
||||
| ^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,3 +1,3 @@
|
||||
fn main() {
|
||||
let override = (); //~ ERROR expected pattern, found reserved keyword `override`
|
||||
let override = (); //~ ERROR expected identifier, found reserved keyword `override`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found reserved keyword `override`
|
||||
error: expected identifier, found reserved keyword `override`
|
||||
--> $DIR/keyword-override.rs:2:9
|
||||
|
|
||||
LL | let override = ();
|
||||
| ^^^^^^^^ expected pattern
|
||||
| ^^^^^^^^ expected identifier, found reserved keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#override = ();
|
||||
| ^^^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py pub'
|
||||
|
||||
fn main() {
|
||||
let pub = "foo"; //~ error: expected pattern, found keyword `pub`
|
||||
let pub = "foo"; //~ error: expected identifier, found keyword `pub`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `pub`
|
||||
error: expected identifier, found keyword `pub`
|
||||
--> $DIR/keyword-pub-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let pub = "foo";
|
||||
| ^^^ expected pattern
|
||||
| ^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#pub = "foo";
|
||||
| ^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py return'
|
||||
|
||||
fn main() {
|
||||
let return = "foo"; //~ error: expected pattern, found keyword `return`
|
||||
let return = "foo"; //~ error: expected identifier, found keyword `return`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `return`
|
||||
error: expected identifier, found keyword `return`
|
||||
--> $DIR/keyword-return-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let return = "foo";
|
||||
| ^^^^^^ expected pattern
|
||||
| ^^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#return = "foo";
|
||||
| ^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py static'
|
||||
|
||||
fn main() {
|
||||
let static = "foo"; //~ error: expected pattern, found keyword `static`
|
||||
let static = "foo"; //~ error: expected identifier, found keyword `static`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `static`
|
||||
error: expected identifier, found keyword `static`
|
||||
--> $DIR/keyword-static-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let static = "foo";
|
||||
| ^^^^^^ expected pattern
|
||||
| ^^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#static = "foo";
|
||||
| ^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py struct'
|
||||
|
||||
fn main() {
|
||||
let struct = "foo"; //~ error: expected pattern, found keyword `struct`
|
||||
let struct = "foo"; //~ error: expected identifier, found keyword `struct`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `struct`
|
||||
error: expected identifier, found keyword `struct`
|
||||
--> $DIR/keyword-struct-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let struct = "foo";
|
||||
| ^^^^^^ expected pattern
|
||||
| ^^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#struct = "foo";
|
||||
| ^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py trait'
|
||||
|
||||
fn main() {
|
||||
let trait = "foo"; //~ error: expected pattern, found keyword `trait`
|
||||
let trait = "foo"; //~ error: expected identifier, found keyword `trait`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `trait`
|
||||
error: expected identifier, found keyword `trait`
|
||||
--> $DIR/keyword-trait-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let trait = "foo";
|
||||
| ^^^^^ expected pattern
|
||||
| ^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#trait = "foo";
|
||||
| ^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// compile-flags: --edition 2018
|
||||
|
||||
fn main() {
|
||||
let try = "foo"; //~ error: expected pattern, found reserved keyword `try`
|
||||
let try = "foo"; //~ error: expected identifier, found reserved keyword `try`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found reserved keyword `try`
|
||||
error: expected identifier, found reserved keyword `try`
|
||||
--> $DIR/keyword-try-as-identifier-edition2018.rs:4:9
|
||||
|
|
||||
LL | let try = "foo";
|
||||
| ^^^ expected pattern
|
||||
| ^^^ expected identifier, found reserved keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#try = "foo";
|
||||
| ^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py type'
|
||||
|
||||
fn main() {
|
||||
let type = "foo"; //~ error: expected pattern, found keyword `type`
|
||||
let type = "foo"; //~ error: expected identifier, found keyword `type`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `type`
|
||||
error: expected identifier, found keyword `type`
|
||||
--> $DIR/keyword-type-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let type = "foo";
|
||||
| ^^^^ expected pattern
|
||||
| ^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#type = "foo";
|
||||
| ^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,3 +1,3 @@
|
||||
fn main() {
|
||||
let typeof = (); //~ ERROR expected pattern, found reserved keyword `typeof`
|
||||
let typeof = (); //~ ERROR expected identifier, found reserved keyword `typeof`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found reserved keyword `typeof`
|
||||
error: expected identifier, found reserved keyword `typeof`
|
||||
--> $DIR/keyword-typeof.rs:2:9
|
||||
|
|
||||
LL | let typeof = ();
|
||||
| ^^^^^^ expected pattern
|
||||
| ^^^^^^ expected identifier, found reserved keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#typeof = ();
|
||||
| ^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py unsafe'
|
||||
|
||||
fn main() {
|
||||
let unsafe = "foo"; //~ error: expected pattern, found keyword `unsafe`
|
||||
let unsafe = "foo"; //~ error: expected identifier, found keyword `unsafe`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `unsafe`
|
||||
error: expected identifier, found keyword `unsafe`
|
||||
--> $DIR/keyword-unsafe-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let unsafe = "foo";
|
||||
| ^^^^^^ expected pattern
|
||||
| ^^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#unsafe = "foo";
|
||||
| ^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py use'
|
||||
|
||||
fn main() {
|
||||
let use = "foo"; //~ error: expected pattern, found keyword `use`
|
||||
let use = "foo"; //~ error: expected identifier, found keyword `use`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `use`
|
||||
error: expected identifier, found keyword `use`
|
||||
--> $DIR/keyword-use-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let use = "foo";
|
||||
| ^^^ expected pattern
|
||||
| ^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#use = "foo";
|
||||
| ^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py where'
|
||||
|
||||
fn main() {
|
||||
let where = "foo"; //~ error: expected pattern, found keyword `where`
|
||||
let where = "foo"; //~ error: expected identifier, found keyword `where`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `where`
|
||||
error: expected identifier, found keyword `where`
|
||||
--> $DIR/keyword-where-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let where = "foo";
|
||||
| ^^^^^ expected pattern
|
||||
| ^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#where = "foo";
|
||||
| ^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,5 +1,5 @@
|
||||
// This file was auto-generated using 'src/etc/generate-keyword-tests.py while'
|
||||
|
||||
fn main() {
|
||||
let while = "foo"; //~ error: expected pattern, found keyword `while`
|
||||
let while = "foo"; //~ error: expected identifier, found keyword `while`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found keyword `while`
|
||||
error: expected identifier, found keyword `while`
|
||||
--> $DIR/keyword-while-as-identifier.rs:4:9
|
||||
|
|
||||
LL | let while = "foo";
|
||||
| ^^^^^ expected pattern
|
||||
| ^^^^^ expected identifier, found keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#while = "foo";
|
||||
| ^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -1,7 +1,35 @@
|
||||
// Can't put mut in non-ident pattern
|
||||
|
||||
// edition:2018
|
||||
|
||||
#![feature(box_patterns)]
|
||||
#![allow(warnings)]
|
||||
|
||||
pub fn main() {
|
||||
let mut mut x = 0;
|
||||
//~^ ERROR `mut` on a binding may not be repeated
|
||||
//~| remove the additional `mut`s
|
||||
|
||||
struct Foo { x: isize }
|
||||
let mut Foo { x: x } = Foo { x: 3 };
|
||||
//~^ ERROR: expected one of `:`, `;`, `=`, `@`, or `|`, found `{`
|
||||
//~^ ERROR `mut` must be attached to each individual binding
|
||||
//~| add `mut` to each binding
|
||||
|
||||
let mut Foo { x } = Foo { x: 3 };
|
||||
//~^ ERROR `mut` must be attached to each individual binding
|
||||
//~| add `mut` to each binding
|
||||
|
||||
struct r#yield(u8, u8);
|
||||
let mut mut yield(become, await) = r#yield(0, 0);
|
||||
//~^ ERROR `mut` on a binding may not be repeated
|
||||
//~| ERROR `mut` must be attached to each individual binding
|
||||
//~| ERROR expected identifier, found reserved keyword `yield`
|
||||
//~| ERROR expected identifier, found reserved keyword `become`
|
||||
//~| ERROR expected identifier, found reserved keyword `await`
|
||||
|
||||
struct W<T, U>(T, U);
|
||||
struct B { f: Box<u8> }
|
||||
let mut W(mut a, W(b, W(ref c, W(d, B { box f }))))
|
||||
//~^ ERROR `mut` must be attached to each individual binding
|
||||
= W(0, W(1, W(2, W(3, B { f: Box::new(4u8) }))));
|
||||
}
|
||||
|
@ -1,8 +1,68 @@
|
||||
error: expected one of `:`, `;`, `=`, `@`, or `|`, found `{`
|
||||
--> $DIR/mut-patterns.rs:5:17
|
||||
error: `mut` on a binding may not be repeated
|
||||
--> $DIR/mut-patterns.rs:9:13
|
||||
|
|
||||
LL | let mut mut x = 0;
|
||||
| ^^^ help: remove the additional `mut`s
|
||||
|
||||
error: `mut` must be attached to each individual binding
|
||||
--> $DIR/mut-patterns.rs:14:9
|
||||
|
|
||||
LL | let mut Foo { x: x } = Foo { x: 3 };
|
||||
| ^ expected one of `:`, `;`, `=`, `@`, or `|` here
|
||||
| ^^^^^^^^^^^^^^^^ help: add `mut` to each binding: `Foo { x: mut x }`
|
||||
|
||||
error: aborting due to previous error
|
||||
error: `mut` must be attached to each individual binding
|
||||
--> $DIR/mut-patterns.rs:18:9
|
||||
|
|
||||
LL | let mut Foo { x } = Foo { x: 3 };
|
||||
| ^^^^^^^^^^^^^ help: add `mut` to each binding: `Foo { mut x }`
|
||||
|
||||
error: `mut` on a binding may not be repeated
|
||||
--> $DIR/mut-patterns.rs:23:13
|
||||
|
|
||||
LL | let mut mut yield(become, await) = r#yield(0, 0);
|
||||
| ^^^ help: remove the additional `mut`s
|
||||
|
||||
error: expected identifier, found reserved keyword `yield`
|
||||
--> $DIR/mut-patterns.rs:23:17
|
||||
|
|
||||
LL | let mut mut yield(become, await) = r#yield(0, 0);
|
||||
| ^^^^^ expected identifier, found reserved keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let mut mut r#yield(become, await) = r#yield(0, 0);
|
||||
| ^^^^^^^
|
||||
|
||||
error: expected identifier, found reserved keyword `become`
|
||||
--> $DIR/mut-patterns.rs:23:23
|
||||
|
|
||||
LL | let mut mut yield(become, await) = r#yield(0, 0);
|
||||
| ^^^^^^ expected identifier, found reserved keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let mut mut yield(r#become, await) = r#yield(0, 0);
|
||||
| ^^^^^^^^
|
||||
|
||||
error: expected identifier, found reserved keyword `await`
|
||||
--> $DIR/mut-patterns.rs:23:31
|
||||
|
|
||||
LL | let mut mut yield(become, await) = r#yield(0, 0);
|
||||
| ^^^^^ expected identifier, found reserved keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let mut mut yield(become, r#await) = r#yield(0, 0);
|
||||
| ^^^^^^^
|
||||
|
||||
error: `mut` must be attached to each individual binding
|
||||
--> $DIR/mut-patterns.rs:23:9
|
||||
|
|
||||
LL | let mut mut yield(become, await) = r#yield(0, 0);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add `mut` to each binding: `r#yield(mut r#become, mut r#await)`
|
||||
|
||||
error: `mut` must be attached to each individual binding
|
||||
--> $DIR/mut-patterns.rs:32:9
|
||||
|
|
||||
LL | let mut W(mut a, W(b, W(ref c, W(d, B { box f }))))
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add `mut` to each binding: `W(mut a, W(mut b, W(ref c, W(mut d, B { box mut f }))))`
|
||||
|
||||
error: aborting due to 9 previous errors
|
||||
|
||||
|
@ -1,4 +1,4 @@
|
||||
fn main() {
|
||||
let become = 0;
|
||||
//~^ ERROR expected pattern, found reserved keyword `become`
|
||||
//~^ ERROR expected identifier, found reserved keyword `become`
|
||||
}
|
||||
|
@ -1,8 +1,12 @@
|
||||
error: expected pattern, found reserved keyword `become`
|
||||
error: expected identifier, found reserved keyword `become`
|
||||
--> $DIR/reserved-become.rs:2:9
|
||||
|
|
||||
LL | let become = 0;
|
||||
| ^^^^^^ expected pattern
|
||||
| ^^^^^^ expected identifier, found reserved keyword
|
||||
help: you can escape reserved keywords to use them as identifiers
|
||||
|
|
||||
LL | let r#become = 0;
|
||||
| ^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
@ -14,7 +14,8 @@ pub fn main() {
|
||||
ref Self => (),
|
||||
//~^ ERROR expected identifier, found keyword `Self`
|
||||
mut Self => (),
|
||||
//~^ ERROR expected identifier, found keyword `Self`
|
||||
//~^ ERROR `mut` must be attached to each individual binding
|
||||
//~| ERROR cannot find unit struct/variant or constant `Self`
|
||||
ref mut Self => (),
|
||||
//~^ ERROR expected identifier, found keyword `Self`
|
||||
Self!() => (),
|
||||
|
@ -10,38 +10,38 @@ error: expected identifier, found keyword `Self`
|
||||
LL | ref Self => (),
|
||||
| ^^^^ expected identifier, found keyword
|
||||
|
||||
error: expected identifier, found keyword `Self`
|
||||
--> $DIR/self_type_keyword.rs:16:13
|
||||
error: `mut` must be attached to each individual binding
|
||||
--> $DIR/self_type_keyword.rs:16:9
|
||||
|
|
||||
LL | mut Self => (),
|
||||
| ^^^^ expected identifier, found keyword
|
||||
| ^^^^^^^^ help: add `mut` to each binding: `Self`
|
||||
|
||||
error: expected identifier, found keyword `Self`
|
||||
--> $DIR/self_type_keyword.rs:18:17
|
||||
--> $DIR/self_type_keyword.rs:19:17
|
||||
|
|
||||
LL | ref mut Self => (),
|
||||
| ^^^^ expected identifier, found keyword
|
||||
|
||||
error: expected identifier, found keyword `Self`
|
||||
--> $DIR/self_type_keyword.rs:22:15
|
||||
--> $DIR/self_type_keyword.rs:23:15
|
||||
|
|
||||
LL | Foo { Self } => (),
|
||||
| ^^^^ expected identifier, found keyword
|
||||
|
||||
error: expected identifier, found keyword `Self`
|
||||
--> $DIR/self_type_keyword.rs:28:26
|
||||
--> $DIR/self_type_keyword.rs:29:26
|
||||
|
|
||||
LL | extern crate core as Self;
|
||||
| ^^^^ expected identifier, found keyword
|
||||
|
||||
error: expected identifier, found keyword `Self`
|
||||
--> $DIR/self_type_keyword.rs:33:32
|
||||
--> $DIR/self_type_keyword.rs:34:32
|
||||
|
|
||||
LL | use std::option::Option as Self;
|
||||
| ^^^^ expected identifier, found keyword
|
||||
|
||||
error: expected identifier, found keyword `Self`
|
||||
--> $DIR/self_type_keyword.rs:38:11
|
||||
--> $DIR/self_type_keyword.rs:39:11
|
||||
|
|
||||
LL | trait Self {}
|
||||
| ^^^^ expected identifier, found keyword
|
||||
@ -53,11 +53,21 @@ LL | struct Bar<'Self>;
|
||||
| ^^^^^
|
||||
|
||||
error: cannot find macro `Self!` in this scope
|
||||
--> $DIR/self_type_keyword.rs:20:9
|
||||
--> $DIR/self_type_keyword.rs:21:9
|
||||
|
|
||||
LL | Self!() => (),
|
||||
| ^^^^
|
||||
|
||||
error[E0531]: cannot find unit struct/variant or constant `Self` in this scope
|
||||
--> $DIR/self_type_keyword.rs:16:13
|
||||
|
|
||||
LL | mut Self => (),
|
||||
| ^^^^ not found in this scope
|
||||
help: possible candidate is found in another module, you can import it into scope
|
||||
|
|
||||
LL | use foo::Self;
|
||||
|
|
||||
|
||||
error[E0392]: parameter `'Self` is never used
|
||||
--> $DIR/self_type_keyword.rs:6:12
|
||||
|
|
||||
@ -66,6 +76,6 @@ LL | struct Bar<'Self>;
|
||||
|
|
||||
= help: consider removing `'Self` or using a marker such as `std::marker::PhantomData`
|
||||
|
||||
error: aborting due to 11 previous errors
|
||||
error: aborting due to 12 previous errors
|
||||
|
||||
For more information about this error, try `rustc --explain E0392`.
|
||||
|
Loading…
Reference in New Issue
Block a user