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stop using BytePos for computing spans in librustc_parse/parser/mod.rs #68845

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merged 1 commit into from
Feb 6, 2020
Merged

stop using BytePos for computing spans in librustc_parse/parser/mod.rs #68845

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39 changes: 22 additions & 17 deletions src/librustc_parse/parser/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -21,7 +21,7 @@ use rustc_errors::{struct_span_err, Applicability, DiagnosticBuilder, FatalError
use rustc_session::parse::ParseSess;
use rustc_span::source_map::respan;
use rustc_span::symbol::{kw, sym, Symbol};
use rustc_span::{BytePos, FileName, Span, DUMMY_SP};
use rustc_span::{FileName, Span, DUMMY_SP};
use syntax::ast::{self, AttrStyle, AttrVec, CrateSugar, Extern, Ident, Unsafety, DUMMY_NODE_ID};
use syntax::ast::{IsAsync, MacArgs, MacDelimiter, Mutability, StrLit, Visibility, VisibilityKind};
use syntax::ptr::P;
Expand Down Expand Up @@ -615,8 +615,8 @@ impl<'a> Parser<'a> {
true
}
token::BinOpEq(token::Plus) => {
let span = self.token.span.with_lo(self.token.span.lo() + BytePos(1));
self.bump_with(token::Eq, span);
let start_point = self.sess.source_map().start_point(self.token.span);
self.bump_with(token::Eq, self.token.span.with_lo(start_point.hi()));
true
}
_ => false,
Expand All @@ -633,8 +633,9 @@ impl<'a> Parser<'a> {
Ok(())
}
token::AndAnd => {
let span = self.token.span.with_lo(self.token.span.lo() + BytePos(1));
Ok(self.bump_with(token::BinOp(token::And), span))
let start_point = self.sess.source_map().start_point(self.token.span);
Ok(self
.bump_with(token::BinOp(token::And), self.token.span.with_lo(start_point.hi())))
}
_ => self.unexpected(),
}
Expand All @@ -650,8 +651,9 @@ impl<'a> Parser<'a> {
Ok(())
}
token::OrOr => {
let span = self.token.span.with_lo(self.token.span.lo() + BytePos(1));
Ok(self.bump_with(token::BinOp(token::Or), span))
let start_point = self.sess.source_map().start_point(self.token.span);
Ok(self
.bump_with(token::BinOp(token::Or), self.token.span.with_lo(start_point.hi())))
}
_ => self.unexpected(),
}
Expand All @@ -671,13 +673,16 @@ impl<'a> Parser<'a> {
true
}
token::BinOp(token::Shl) => {
let span = self.sess.source_map().next_point(self.token.span);
self.bump_with(token::Lt, span);
let start_point = self.sess.source_map().start_point(self.token.span);
self.bump_with(token::Lt, self.token.span.with_lo(start_point.hi()));
true
}
token::LArrow => {
let span = self.sess.source_map().next_point(self.token.span);
self.bump_with(token::BinOp(token::Minus), span);
let start_point = self.sess.source_map().start_point(self.token.span);
self.bump_with(
token::BinOp(token::Minus),
self.token.span.with_lo(start_point.hi()),
);
true
}
_ => false,
Expand Down Expand Up @@ -707,16 +712,16 @@ impl<'a> Parser<'a> {
Some(())
}
token::BinOp(token::Shr) => {
let span = self.token.span.with_lo(self.token.span.lo() + BytePos(1));
Some(self.bump_with(token::Gt, span))
let start_point = self.sess.source_map().start_point(self.token.span);
Some(self.bump_with(token::Gt, self.token.span.with_lo(start_point.hi())))
}
token::BinOpEq(token::Shr) => {
let span = self.token.span.with_lo(self.token.span.lo() + BytePos(1));
Some(self.bump_with(token::Ge, span))
let start_point = self.sess.source_map().start_point(self.token.span);
Some(self.bump_with(token::Ge, self.token.span.with_lo(start_point.hi())))
}
token::Ge => {
let span = self.token.span.with_lo(self.token.span.lo() + BytePos(1));
Some(self.bump_with(token::Eq, span))
let start_point = self.sess.source_map().start_point(self.token.span);
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If this is such a common thing then we might want to have a new method in SourceMap for it.

Some(self.bump_with(token::Eq, self.token.span.with_lo(start_point.hi())))
}
_ => None,
};
Expand Down
Binary file modified src/test/ui/parser/issue-68730.stderr
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