| Age | Commit message (Collapse) | Author | Lines |
|---|
|
Due to macro expansion, its possible to end up with two distinct
`ExpnId`s that have the same `ExpnData` contents. This violates the
contract of `HashStable`, since two unequal `ExpnId`s will end up with
equal `Fingerprint`s.
This commit adds a `disambiguator` field to `ExpnData`, which is used to
force two otherwise-equivalent `ExpnData`s to be distinct.
|
|
rustc_span: add span_data_to_lines_and_cols to caching source map view
|
|
|
|
Gives a performance increase over calling byte_pos_to_line_and_col
twice, partially because it decreases the function calling overhead,
potentially because it doesn't populate the line cache with lines that
turn out to belong to invalid spans, and likely because of some other
incidental improvements made possible by having more context available.
|
|
Move Steal to rustc_data_structures.
|
|
|
|
|
|
This allows us to avoid synthesizing tokens in `prepend_attr`, since we
have the original tokens available.
We still need to synthesize tokens when expanding `cfg_attr`,
but this is an unavoidable consequence of the syntax of `cfg_attr` -
the user does not supply the `#` and `[]` tokens that a `cfg_attr`
expands to.
|
|
Modern compilers allow reaching external crates
like std or core via relative paths in modules
outside of lib.rs and main.rs.
|
|
|
|
|
