use crate::maybe_whole;
use crate::DirectoryOwnership;
+use rustc_ast::ast;
+use rustc_ast::ast::{AttrStyle, AttrVec, Attribute, Mac, MacStmtStyle};
+use rustc_ast::ast::{Block, BlockCheckMode, Expr, ExprKind, Local, Stmt, StmtKind, DUMMY_NODE_ID};
+use rustc_ast::ptr::P;
+use rustc_ast::token::{self, TokenKind};
+use rustc_ast::util::classify;
use rustc_errors::{Applicability, PResult};
use rustc_span::source_map::{BytePos, Span};
use rustc_span::symbol::{kw, sym};
-use syntax::ast;
-use syntax::ast::{AttrStyle, AttrVec, Attribute, Mac, MacStmtStyle};
-use syntax::ast::{Block, BlockCheckMode, Expr, ExprKind, Local, Stmt, StmtKind, DUMMY_NODE_ID};
-use syntax::ptr::P;
-use syntax::token::{self, TokenKind};
-use syntax::util::classify;
use std::mem;
} else if let Some(item) = self.parse_stmt_item(attrs.clone())? {
// FIXME: Bad copy of attrs
self.mk_stmt(lo.to(item.span), StmtKind::Item(P(item)))
- } else if self.token == token::Semi {
+ } else if self.eat(&token::Semi) {
// Do not attempt to parse an expression if we're done here.
self.error_outer_attrs(&attrs);
- self.bump();
- let mut last_semi = lo;
- while self.token == token::Semi {
- last_semi = self.token.span;
- self.bump();
- }
- // We are encoding a string of semicolons as an an empty tuple that spans
- // the excess semicolons to preserve this info until the lint stage.
- let kind = StmtKind::Semi(self.mk_expr(
- lo.to(last_semi),
- ExprKind::Tup(Vec::new()),
- AttrVec::new(),
- ));
- self.mk_stmt(lo.to(last_semi), kind)
+ self.mk_stmt(lo, StmtKind::Empty)
} else if self.token != token::CloseDelim(token::Brace) {
// Remainder are line-expr stmts.
let e = self.parse_expr_res(Restrictions::STMT_EXPR, Some(attrs.into()))?;
/// Error on outer attributes in this context.
/// Also error if the previous token was a doc comment.
fn error_outer_attrs(&self, attrs: &[Attribute]) {
- if !attrs.is_empty() {
- if matches!(self.prev_token.kind, TokenKind::DocComment(..)) {
- self.span_fatal_err(self.prev_token.span, Error::UselessDocComment).emit();
+ if let [.., last] = attrs {
+ if last.is_doc_comment() {
+ self.span_fatal_err(last.span, Error::UselessDocComment).emit();
} else if attrs.iter().any(|a| a.style == AttrStyle::Outer) {
- self.struct_span_err(self.token.span, "expected statement after outer attribute")
- .emit();
+ self.struct_span_err(last.span, "expected statement after outer attribute").emit();
}
}
}
self.expect_semi()?;
eat_semi = false;
}
+ StmtKind::Empty => eat_semi = false,
_ => {}
}