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simplify parse_literal_maybe_minus

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This commit is contained in:
Mazdak Farrokhzad 2019-12-06 23:44:23 +01:00
parent f647c11121
commit aa8adba8fb
1 changed files with 4 additions and 8 deletions
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12
src/librustc_parse/parser/expr.rs
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@ -1280,17 +1280,13 @@ impl<'a> Parser<'a> {
pub fn parse_literal_maybe_minus(&mut self) -> PResult<'a, P<Expr>> {
maybe_whole_expr!(self);
let minus_lo = self.token.span;
let minus_present = self.eat(&token::BinOp(token::Minus));
let lo = self.token.span;
let literal = self.parse_lit()?;
let hi = self.prev_span;
let expr = self.mk_expr(lo.to(hi), ExprKind::Lit(literal), AttrVec::new());
let minus_present = self.eat(&token::BinOp(token::Minus));
let lit = self.parse_lit()?;
let expr = self.mk_expr(lit.span, ExprKind::Lit(lit), AttrVec::new());
if minus_present {
let minus_hi = self.prev_span;
let unary = self.mk_unary(UnOp::Neg, expr);
Ok(self.mk_expr(minus_lo.to(minus_hi), unary, AttrVec::new()))
Ok(self.mk_expr(lo.to(self.prev_span), self.mk_unary(UnOp::Neg, expr), AttrVec::new()))
} else {
Ok(expr)
}