2020-06-21 00:59:04 +00:00
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// run-pass
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// aux-build:test-macros.rs
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// compile-flags: -Z span-debug
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// edition:2018
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//
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2022-04-26 12:40:14 +00:00
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// Tests the pretty-printing behavior of inserting `Invisible`-delimited groups
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2020-06-21 00:59:04 +00:00
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Remove normalization of `Span` debug output in proc-macro tests
Fixes #74800
The definition of `is_x86_feature_detected!` (and similar macros)
depends on the platform - it is produced by a `cfg_if!` invocation on
x86, and a plain `#[cfg]` on other platforms. Since it is part of the
prelude, we will end up importing different hygiene information
depending on the platform. This previously required us to avoid printing raw
`SyntaxContext` ids in any tests that uses the standard library, since
the captured output will be platform-dependent.
Previously, we replaced all `SyntaxContext` ids with "#CTXT", and the
raw `Span` lo/hi bytes with "LO..HI".
This commit adds `#![no_std]` and `extern crate std` to all proc-macro
tests that print spans. This suppresses the prelude import, while
still using lang items from `std` (which gives us a buildable binary).
With this apporach, we will only load hygiene information for things
which we explicitly import. This lets us re-add
`-Z unpretty=expanded,hygiene`, since its output can now be made stable
across all platforms.
Additionally, we use `-Z span-debug` in more places, which lets us avoid
the "LO..HI" normalization hack.
2020-08-09 17:36:31 +00:00
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#![no_std] // Don't load unnecessary hygiene information from std
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extern crate std;
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2020-06-21 00:59:04 +00:00
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extern crate test_macros;
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use test_macros::print_bang_consume;
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macro_rules! expand_it {
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(($val1:expr) ($val2:expr)) => { expand_it!($val1 + $val2) };
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($val:expr) => { print_bang_consume!("hi" $val (1 + 1)) };
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}
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fn main() {
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expand_it!(1 + (25) + 1);
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expand_it!(("hello".len()) ("world".len()));
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}
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