Renumber AST nodes after expansion #9040
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…node has a unique id. Fixes numerous bugs in macro expansion and deriving. Add two representative tests. Fixes rust-lang#7971 Fixes rust-lang#6304 Fixes rust-lang#8367 Fixes rust-lang#8754 Fixes rust-lang#8852
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Needs a rebase. (Also, looks like it fixes #7654; editing this into the PR message so that bors will close that issue automatically.) |
| fn fold_view_path_(@self, vp: &view_path_) -> view_path_ { | ||
| match *vp { | ||
| view_path_simple(ident, ref path, node_id) => { | ||
| view_path_simple(ident, |
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Should this call self.fold_ident(ident)?
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Should this call
self.fold_ident(ident)?
Yes, good catch.
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never mind, I remember there was one bug I wanted to fix first |
Jarcho
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…=dswij Add new lint [`positional_named_format_parameters`] *Please write a short comment explaining your change (or "none" for internal only changes)* changelog: Add new lint [`positional_named_format_parameters`] to warn when named parameters in format strings are used as positional arguments.
Jarcho
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Refactor `FormatArgsExpn`
It now for each format argument `{..}` has:
- The `Expr` it points to, and how it does so (named/named inline/numbered/implicit)
- The parsed `FormatSpec` (format trait/fill/align/etc., the precision/width and any value they point to)
- Many spans
The caller no longer needs to pair up arguments to their value, or separately interpret the `specs` `Expr`s when it isn't `None`
The gist is that it combines the result of [`rustc_parse_format::Parser`](https://doc.rust-lang.org/nightly/nightly-rustc/rustc_parse_format/struct.Parser.html) with the macro expansion itself
This unfortunately makes the code a bit longer, however we need to use both as neither have all the information we're after. `rustc_parse_format` doesn't have the information to resolve named arguments to their values. The macro expansion doesn't contain whether the positions are implicit/numbered/named, or the spans for format arguments
Wanted by rust-lang#9233 and rust-lang#8518 to be able to port the changes from rust-lang#9040
Also fixes rust-lang#8643, previously the format args seem to have been paired up with the wrong values somehow
changelog: [`format_in_format_args`]: Fix false positive due to misattributed arguments
r? `@flip1995`
cc `@nyurik`
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After expansion, fold and renumber AST nodes to ensure that each AST node has a
unique id. Fixes numerous bugs in macro expansion and deriving. Add two
representative tests.
Fixes #7971
Fixes #6304
Fixes #8367
Fixes #8754
Fixes #8852
Fixes #7654
r? @brson