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Continue cfg syntax transition

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All deprecation warnings have been converted to errors. This includes
the warning for multiple cfgs on one item. We'll leave that as an error
for some period of time to ensure that all uses are updated before the
behavior changes from "or" to "and".
This commit is contained in:
Steven Fackler 2014-10-11 18:05:54 -07:00
parent cd1fa91d2b
commit aa3b1261b1
25 changed files with 99 additions and 191 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
src/compiletest/runtest.rs
View File

@ -952,10 +952,10 @@ fn check_expected_errors(expected_errors: Vec<errors::ExpectedError> ,
to_lower(line).as_slice().starts_with(to_lower(prefix).as_slice())
}
#[cfg(target_os = "linux")]
#[cfg(target_os = "macos")]
#[cfg(target_os = "freebsd")]
#[cfg(target_os = "dragonfly")]
#[cfg(any(target_os = "linux",
target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
fn prefix_matches( line : &str, prefix : &str ) -> bool {
line.starts_with( prefix )
}
@ -1356,10 +1356,10 @@ fn program_output(config: &Config, testfile: &Path, lib_path: &str, prog: String
}
// Linux and mac don't require adjusting the library search path
#[cfg(target_os = "linux")]
#[cfg(target_os = "macos")]
#[cfg(target_os = "freebsd")]
#[cfg(target_os = "dragonfly")]
#[cfg(any(target_os = "linux",
target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
fn make_cmdline(_libpath: &str, prog: &str, args: &[String]) -> String {
format!("{} {}", prog, args.connect(" "))
}

2
src/doc/guide-ffi.md
View File

@ -475,7 +475,7 @@ conventions. Rust provides a way to tell the compiler which convention to use:
~~~~
extern crate libc;
#[cfg(target_os = "win32", target_arch = "x86")]
#[cfg(all(target_os = "win32", target_arch = "x86"))]
#[link(name = "kernel32")]
#[allow(non_snake_case)]
extern "stdcall" {

16
src/doc/guide-unsafe.md
View File

@ -313,8 +313,7 @@ literal string (i.e `""`)
```
#![feature(asm)]
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "x86_64")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
fn foo() {
unsafe {
asm!("NOP");
@ -322,8 +321,7 @@ fn foo() {
}
// other platforms
#[cfg(not(target_arch = "x86"),
not(target_arch = "x86_64"))]
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
fn foo() { /* ... */ }
fn main() {
@ -340,7 +338,7 @@ but you must add the right number of `:` if you skip them:
```
# #![feature(asm)]
# #[cfg(target_arch = "x86")] #[cfg(target_arch = "x86_64")]
# #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
# fn main() { unsafe {
asm!("xor %eax, %eax"
:
@ -354,7 +352,7 @@ Whitespace also doesn't matter:
```
# #![feature(asm)]
# #[cfg(target_arch = "x86")] #[cfg(target_arch = "x86_64")]
# #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
# fn main() { unsafe {
asm!("xor %eax, %eax" ::: "eax");
# } }
@ -368,7 +366,7 @@ expressions must be mutable lvalues:
```
# #![feature(asm)]
# #[cfg(target_arch = "x86")] #[cfg(target_arch = "x86_64")]
# #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
fn add(a: int, b: int) -> int {
let mut c = 0;
unsafe {
@ -379,7 +377,7 @@ fn add(a: int, b: int) -> int {
}
c
}
# #[cfg(not(target_arch = "x86"), not(target_arch = "x86_64"))]
# #[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
# fn add(a: int, b: int) -> int { a + b }
fn main() {
@ -396,7 +394,7 @@ stay valid.
```
# #![feature(asm)]
# #[cfg(target_arch = "x86")] #[cfg(target_arch = "x86_64")]
# #[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
# fn main() { unsafe {
// Put the value 0x200 in eax
asm!("mov $$0x200, %eax" : /* no outputs */ : /* no inputs */ : "eax");

18
src/doc/reference.md
View File

@ -2066,26 +2066,28 @@ fn macos_only() {
}
// This function is only included when either foo or bar is defined
#[cfg(foo)]
#[cfg(bar)]
#[cfg(any(foo, bar))]
fn needs_foo_or_bar() {
// ...
}
// This function is only included when compiling for a unixish OS with a 32-bit
// architecture
#[cfg(unix, target_word_size = "32")]
#[cfg(all(unix, target_word_size = "32"))]
fn on_32bit_unix() {
// ...
}
// This function is only included when foo is not defined
#[cfg(not(foo))]
fn needs_not_foo() {
// ...
}
```
This illustrates some conditional compilation can be achieved using the
`#[cfg(...)]` attribute. Note that `#[cfg(foo, bar)]` is a condition that needs
both `foo` and `bar` to be defined while `#[cfg(foo)] #[cfg(bar)]` only needs
one of `foo` and `bar` to be defined (this resembles in the disjunctive normal
form). Additionally, one can reverse a condition by enclosing it in a
`not(...)`, like e. g. `#[cfg(not(target_os = "win32"))]`.
`#[cfg(...)]` attribute. `any`, `all` and `not` can be used to assemble
arbitrarily complex configurations through nesting.
The following configurations must be defined by the implementation:

16
src/libcoretest/mem.rs
View File

@ -19,10 +19,10 @@ fn size_of_basic() {
}
#[test]
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
#[cfg(any(target_arch = "x86",
target_arch = "arm",
target_arch = "mips",
target_arch = "mipsel"))]
fn size_of_32() {
assert_eq!(size_of::<uint>(), 4u);
assert_eq!(size_of::<*const uint>(), 4u);
@ -51,10 +51,10 @@ fn align_of_basic() {
}
#[test]
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
#[cfg(any(target_arch = "x86",
target_arch = "arm",
target_arch = "mips",
target_arch = "mipsel"))]
fn align_of_32() {
assert_eq!(align_of::<uint>(), 4u);
assert_eq!(align_of::<*const uint>(), 4u);

3
src/librustc_back/rpath.rs
View File

@ -200,8 +200,7 @@ mod test {
}
#[test]
#[cfg(target_os = "linux")]
#[cfg(target_os = "android")]
#[cfg(any(target_os = "linux", target_os = "android"))]
fn test_rpath_relative() {
let config = &mut RPathConfig {
os: abi::OsLinux,

57
src/libsyntax/attr.rs
View File

@ -316,11 +316,10 @@ pub fn cfg_matches(diagnostic: &SpanHandler, cfgs: &[P<MetaItem>], cfg: &ast::Me
mis.iter().all(|mi| cfg_matches(diagnostic, cfgs, &**mi)),
ast::MetaList(ref pred, ref mis) if pred.get() == "not" => {
if mis.len() != 1 {
diagnostic.span_warn(cfg.span, "the use of multiple cfgs in the same `not` \
statement is deprecated. Change `not(a, b)` to \
`not(all(a, b))`.");
diagnostic.span_err(cfg.span, "expected 1 cfg-pattern");
return false;
}
!mis.iter().all(|mi| cfg_matches(diagnostic, cfgs, &**mi))
!cfg_matches(diagnostic, cfgs, &*mis[0])
}
ast::MetaList(ref pred, _) => {
diagnostic.span_err(cfg.span, format!("invalid predicate `{}`", pred).as_slice());
@ -330,56 +329,6 @@ pub fn cfg_matches(diagnostic: &SpanHandler, cfgs: &[P<MetaItem>], cfg: &ast::Me
}
}
/// Tests if any `cfg(...)` meta items in `metas` match `cfg`. e.g.
///
/// test_cfg(`[foo="a", bar]`, `[cfg(foo), cfg(bar)]`) == true
/// test_cfg(`[foo="a", bar]`, `[cfg(not(bar))]`) == false
/// test_cfg(`[foo="a", bar]`, `[cfg(bar, foo="a")]`) == true
/// test_cfg(`[foo="a", bar]`, `[cfg(bar, foo="b")]`) == false
pub fn test_cfg<'a, AM: AttrMetaMethods, It: Iterator<&'a AM>>
(cfg: &[P<MetaItem>], mut metas: It) -> bool {
// having no #[cfg(...)] attributes counts as matching.
let mut no_cfgs = true;
// this would be much nicer as a chain of iterator adaptors, but
// this doesn't work.
let some_cfg_matches = metas.fold(false, |matches, mi| {
debug!("testing name: {}", mi.name());
let this_matches = if mi.check_name("cfg") { // it is a #[cfg()] attribute
debug!("is cfg");
no_cfgs = false;
// only #[cfg(...)] ones are understood.
match mi.meta_item_list() {
Some(cfg_meta) => {
debug!("is cfg(...)");
cfg_meta.iter().all(|cfg_mi| {
debug!("cfg({}[...])", cfg_mi.name());
match cfg_mi.node {
ast::MetaList(ref s, ref not_cfgs)
if s.equiv(&("not")) => {
debug!("not!");
// inside #[cfg(not(...))], so these need to all
// not match.
!not_cfgs.iter().all(|mi| {
debug!("cfg(not({}[...]))", mi.name());
contains(cfg, &**mi)
})
}
_ => contains(cfg, &**cfg_mi)
}
})
}
None => false
}
} else {
false
};
matches || this_matches
});
debug!("test_cfg (no_cfgs={}, some_cfg_matches={})", no_cfgs, some_cfg_matches);
no_cfgs || some_cfg_matches
}
/// Represents the #[deprecated="foo"] and friends attributes.
#[deriving(Encodable,Decodable,Clone,Show)]
pub struct Stability {

16
src/libsyntax/config.rs
View File

@ -261,20 +261,20 @@ fn in_cfg(diagnostic: &SpanHandler, cfg: &[P<ast::MetaItem>], attrs: &[ast::Attr
};
if mis.len() != 1 {
diagnostic.span_warn(attr.span, "The use of multiple cfgs in the top level of \
`#[cfg(..)]` is deprecated. Change `#[cfg(a, b)]` to \
`#[cfg(all(a, b))]`.");
diagnostic.span_err(attr.span, "expected 1 cfg-pattern");
return false;
}
if seen_cfg {
diagnostic.span_warn(attr.span, "The semantics of multiple `#[cfg(..)]` attributes on \
same item are changing from the union of the cfgs to \
the intersection of the cfgs. Change `#[cfg(a)] \
#[cfg(b)]` to `#[cfg(any(a, b))]`.");
diagnostic.span_err(attr.span, "The semantics of multiple `#[cfg(..)]` attributes on \
same item are changing from the union of the cfgs to \
the intersection of the cfgs. Change `#[cfg(a)] \
#[cfg(b)]` to `#[cfg(any(a, b))]`.");
return false;
}
seen_cfg = true;
in_cfg |= mis.iter().all(|mi| attr::cfg_matches(diagnostic, cfg, &**mi));
in_cfg |= attr::cfg_matches(diagnostic, cfg, &*mis[0]);
}
in_cfg | !seen_cfg
}

30
src/libsyntax/ext/cfg.rs
View File

@ -8,11 +8,9 @@
// option. This file may not be copied, modified, or distributed
// except according to those terms.
/**
The compiler code necessary to support the cfg! extension, which
expands to a literal `true` or `false` based on whether the given cfgs
match the current compilation environment.
*/
/// The compiler code necessary to support the cfg! extension, which expands to
/// a literal `true` or `false` based on whether the given cfg matches the
/// current compilation environment.
use ast;
use codemap::Span;
@ -24,28 +22,18 @@ use attr::*;
use parse::attr::ParserAttr;
use parse::token;
pub fn expand_cfg<'cx>(cx: &mut ExtCtxt,
sp: Span,
tts: &[ast::TokenTree])
-> Box<base::MacResult+'static> {
let mut p = cx.new_parser_from_tts(tts);
let mut cfgs = Vec::new();
// parse `cfg!(meta_item, meta_item(x,y), meta_item="foo", ...)`
while p.token != token::EOF {
cfgs.push(p.parse_meta_item());
if p.eat(&token::EOF) { break } // trailing comma is optional,.
p.expect(&token::COMMA);
let cfg = p.parse_meta_item();
if !p.eat(&token::EOF) {
cx.span_err(sp, "expected 1 cfg-pattern");
return DummyResult::expr(sp);
}
if cfgs.len() != 1 {
cx.span_warn(sp, "The use of multiple cfgs at the top level of `cfg!` \
is deprecated. Change `cfg!(a, b)` to \
`cfg!(all(a, b))`.");
}
let matches_cfg = cfgs.iter().all(|cfg| attr::cfg_matches(&cx.parse_sess.span_diagnostic,
cx.cfg.as_slice(), &**cfg));
let matches_cfg = attr::cfg_matches(&cx.parse_sess.span_diagnostic, cx.cfg.as_slice(), &*cfg);
MacExpr::new(cx.expr_bool(sp, matches_cfg))
}

20
src/libsyntax/test.rs
View File

@ -126,7 +126,7 @@ impl<'a> fold::Folder for TestHarnessGenerator<'a> {
span: i.span,
path: self.cx.path.clone(),
bench: is_bench_fn(&self.cx, &*i),
ignore: is_ignored(&self.cx, &*i),
ignore: is_ignored(&*i),
should_fail: should_fail(&*i)
};
self.cx.testfns.push(test);
@ -343,22 +343,8 @@ fn is_bench_fn(cx: &TestCtxt, i: &ast::Item) -> bool {
return has_bench_attr && has_test_signature(i);
}
fn is_ignored(cx: &TestCtxt, i: &ast::Item) -> bool {
i.attrs.iter().any(|attr| {
// check ignore(cfg(foo, bar))
attr.check_name("ignore") && match attr.meta_item_list() {
Some(ref cfgs) => {
if cfgs.iter().any(|cfg| cfg.check_name("cfg")) {
cx.span_diagnostic.span_warn(attr.span,
"The use of cfg filters in #[ignore] is \
deprecated. Use #[cfg_attr(<cfg pattern>, \
ignore)] instead.");
}
attr::test_cfg(cx.config.as_slice(), cfgs.iter())
}
None => true
}
})
fn is_ignored(i: &ast::Item) -> bool {
i.attrs.iter().any(|attr| attr.check_name("ignore"))
}
fn should_fail(i: &ast::Item) -> bool {

3
src/test/auxiliary/extern_calling_convention.rs
View File

@ -26,8 +26,7 @@ pub extern "win64" fn foo(a: int, b: int, c: int, d: int) {
}
#[inline(never)]
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(any(target_arch = "x86", target_arch = "arm"))]
pub extern fn foo(a: int, b: int, c: int, d: int) {
assert!(a == 1);
assert!(b == 2);

4
src/test/run-make/test-harness/test-ignore-cfg.rs
View File

@ -9,11 +9,11 @@
// except according to those terms.
#[test]
#[ignore(cfg(ignorecfg))]
#[cfg_attr(ignorecfg, ignore)]
fn shouldignore() {
}
#[test]
#[ignore(cfg(noignorecfg))]
#[cfg_attr(noignorecfg, ignore)]
fn shouldnotignore() {
}

8
src/test/run-pass/asm-in-out-operand.rs
View File

@ -10,8 +10,7 @@
#![feature(asm)]
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "x86_64")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
unsafe fn next_power_of_2(n: u32) -> u32 {
let mut tmp = n;
asm!("dec $0" : "+rm"(tmp) :: "cc");
@ -28,8 +27,7 @@ unsafe fn next_power_of_2(n: u32) -> u32 {
return tmp;
}
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "x86_64")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
pub fn main() {
unsafe {
assert_eq!(64, next_power_of_2(37));
@ -62,5 +60,5 @@ pub fn main() {
assert_eq!(x, 60);
}
#[cfg(not(target_arch = "x86"), not(target_arch = "x86_64"))]
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
pub fn main() {}

5
src/test/run-pass/asm-out-assign.rs
View File

@ -10,8 +10,7 @@
#![feature(asm)]
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "x86_64")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
pub fn main() {
let x: int;
unsafe {
@ -30,5 +29,5 @@ pub fn main() {
assert_eq!(x, 13);
}
#[cfg(not(target_arch = "x86"), not(target_arch = "x86_64"))]
#[cfg(not(any(target_arch = "x86", target_arch = "x86_64")))]
pub fn main() {}

3
src/test/run-pass/bitwise.rs
View File

@ -9,8 +9,7 @@
// except according to those terms.
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(any(target_arch = "x86", target_arch = "arm"))]
fn target() {
assert_eq!(-1000 as uint >> 3u, 536870787u);
}

11
src/test/run-pass/cfgs-on-items.rs
View File

@ -11,24 +11,23 @@
// compile-flags: --cfg fooA --cfg fooB
// fooA AND !bar
#[cfg(fooA, not(bar))]
#[cfg(all(fooA, not(bar)))]
fn foo1() -> int { 1 }
// !fooA AND !bar
#[cfg(not(fooA), not(bar))]
#[cfg(all(not(fooA), not(bar)))]
fn foo2() -> int { 2 }
// fooC OR (fooB AND !bar)
#[cfg(fooC)]
#[cfg(fooB, not(bar))]
#[cfg(any(fooC, all(fooB, not(bar))))]
fn foo2() -> int { 3 }
// fooA AND bar
#[cfg(fooA, bar)]
#[cfg(all(fooA, bar))]
fn foo3() -> int { 2 }
// !(fooA AND bar)
#[cfg(not(fooA, bar))]
#[cfg(not(all(fooA, bar)))]
fn foo3() -> int { 3 }
pub fn main() {

4
src/test/run-pass/core-run-destroy.rs
View File

@ -60,10 +60,10 @@ pub fn test_destroy_actually_kills(force: bool) {
use libc;
use std::str;
#[cfg(unix,not(target_os="android"))]
#[cfg(all(unix,not(target_os="android")))]
static BLOCK_COMMAND: &'static str = "cat";
#[cfg(unix,target_os="android")]
#[cfg(all(unix,target_os="android"))]
static BLOCK_COMMAND: &'static str = "/system/bin/cat";
#[cfg(windows)]

11
src/test/run-pass/intrinsic-alignment.rs
View File

@ -17,10 +17,10 @@ mod rusti {
}
}
#[cfg(target_os = "linux")]
#[cfg(target_os = "macos")]
#[cfg(target_os = "freebsd")]
#[cfg(target_os = "dragonfly")]
#[cfg(any(target_os = "linux",
target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
mod m {
#[main]
#[cfg(target_arch = "x86")]
@ -32,8 +32,7 @@ mod m {
}
#[main]
#[cfg(target_arch = "x86_64")]
#[cfg(target_arch = "arm")]
#[cfg(any(target_arch = "x86_64", target_arch = "arm"))]
pub fn main() {
unsafe {
assert_eq!(::rusti::pref_align_of::<u64>(), 8u);

5
src/test/run-pass/issue-14936.rs
View File

@ -36,8 +36,7 @@ macro_rules! demo {
}
}
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "x86_64")]
#[cfg(any(target_arch = "x86", target_arch = "x86_64"))]
fn main() {
fn out_write_only_expr_then_in_expr() {
demo!("=r")
@ -51,5 +50,5 @@ fn main() {
out_read_write_expr_then_in_expr();
}
#[cfg(not(target_arch = "x86"), not(target_arch = "x86_64"))]
#[cfg(all(not(target_arch = "x86"), not(target_arch = "x86_64")))]
pub fn main() {}

3
src/test/run-pass/issue-2895.rs
View File

@ -28,8 +28,7 @@ pub fn main() {
assert_eq!(mem::size_of::<Kitty>(), 16 as uint);
}
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(any(target_arch = "x86", target_arch = "arm"))]
pub fn main() {
assert_eq!(mem::size_of::<Cat>(), 4 as uint);
assert_eq!(mem::size_of::<Kitty>(), 8 as uint);

3
src/test/run-pass/rec-align-u32.rs
View File

@ -36,8 +36,7 @@ struct Outer {
}
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(any(target_arch = "x86", target_arch = "arm"))]
mod m {
pub fn align() -> uint { 4u }
pub fn size() -> uint { 8u }

11
src/test/run-pass/rec-align-u64.rs
View File

@ -36,10 +36,10 @@ struct Outer {
}
#[cfg(target_os = "linux")]
#[cfg(target_os = "macos")]
#[cfg(target_os = "freebsd")]
#[cfg(target_os = "dragonfly")]
#[cfg(any(target_os = "linux",
target_os = "macos",
target_os = "freebsd",
target_os = "dragonfly"))]
mod m {
#[cfg(target_arch = "x86")]
pub mod m {
@ -47,8 +47,7 @@ mod m {
pub fn size() -> uint { 12u }
}
#[cfg(target_arch = "x86_64")]
#[cfg(target_arch = "arm")]
#[cfg(any(target_arch = "x86_64", target_arch = "arm"))]
pub mod m {
pub fn align() -> uint { 8u }
pub fn size() -> uint { 16u }

3
src/test/run-pass/struct-return.rs
View File

@ -57,8 +57,7 @@ fn test2() {
}
}
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(any(target_arch = "x86", target_arch = "arm"))]
fn test2() {
}

12
src/test/run-pass/syntax-extension-cfg.rs
View File

@ -18,17 +18,15 @@ pub fn main() {
if ! cfg!(qux="foo") { fail!() }
if cfg!(not(qux="foo")) { fail!() }
if ! cfg!(foo, qux="foo") { fail!() }
if cfg!(not(foo, qux="foo")) { fail!() }
if cfg!(all(not(foo, qux="foo"))) { fail!() }
if ! cfg!(all(foo, qux="foo")) { fail!() }
if cfg!(not(all(foo, qux="foo"))) { fail!() }
if cfg!(all(not(all(foo, qux="foo")))) { fail!() }
if cfg!(not_a_cfg) { fail!() }
if cfg!(not_a_cfg, foo, qux="foo") { fail!() }
if cfg!(all(not_a_cfg, foo, qux="foo")) { fail!() }
if cfg!(all(not_a_cfg, foo, qux="foo")) { fail!() }
if ! cfg!(any(not_a_cfg, foo)) { fail!() }
if ! cfg!(not(not_a_cfg)) { fail!() }
if ! cfg!(not(not_a_cfg), foo, qux="foo") { fail!() }
if cfg!(trailing_comma, ) { fail!() }
if ! cfg!(all(not(not_a_cfg), foo, qux="foo")) { fail!() }
}

10
src/test/run-pass/x86stdcall.rs
View File

@ -30,9 +30,9 @@ pub fn main() {
}
}
#[cfg(target_os = "macos")]
#[cfg(target_os = "linux")]
#[cfg(target_os = "freebsd")]
#[cfg(target_os = "dragonfly")]
#[cfg(target_os = "android")]
#[cfg(any(target_os = "macos",
target_os = "linux",
target_os = "freebsd",
target_os = "dragonfly",
target_os = "android"))]
pub fn main() { }