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https://github.com/rust-lang/rust
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auto merge of #10832 : chris-morgan/rust/let's-lop-lang-item-line-count, r=alexcrichton
This should make maintenance of lang items simpler and also reduces the line count by about 201 lines.
This commit is contained in:
bors
commit
aa4455e4c7
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@ -34,66 +34,26 @@
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use std::iter::Enumerate;
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use std::vec;
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// The actual lang items defined come at the end of this file in one handy table.
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// So you probably just want to nip down to the end.
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macro_rules! lets_do_this {
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(
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There are $num_lang_items:expr lang items.
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$( $num:pat, $variant:ident, $name:expr, $method:ident; )*
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) => {
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pub enum LangItem {
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FreezeTraitLangItem, // 0
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SendTraitLangItem, // 1
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SizedTraitLangItem, // 2
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DropTraitLangItem, // 3
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AddTraitLangItem, // 4
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SubTraitLangItem, // 5
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MulTraitLangItem, // 6
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DivTraitLangItem, // 7
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RemTraitLangItem, // 8
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NegTraitLangItem, // 9
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NotTraitLangItem, // 10
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BitXorTraitLangItem, // 11
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BitAndTraitLangItem, // 12
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BitOrTraitLangItem, // 13
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ShlTraitLangItem, // 14
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ShrTraitLangItem, // 15
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IndexTraitLangItem, // 16
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EqTraitLangItem, // 17
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OrdTraitLangItem, // 18
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StrEqFnLangItem, // 19
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UniqStrEqFnLangItem, // 20
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FailFnLangItem, // 21
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FailBoundsCheckFnLangItem, // 22
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ExchangeMallocFnLangItem, // 23
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ClosureExchangeMallocFnLangItem, // 24
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ExchangeFreeFnLangItem, // 25
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MallocFnLangItem, // 26
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FreeFnLangItem, // 27
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BorrowAsImmFnLangItem, // 28
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BorrowAsMutFnLangItem, // 29
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ReturnToMutFnLangItem, // 30
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CheckNotBorrowedFnLangItem, // 31
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StrDupUniqFnLangItem, // 32
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RecordBorrowFnLangItem, // 33
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UnrecordBorrowFnLangItem, // 34
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StartFnLangItem, // 35
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TyDescStructLangItem, // 36
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TyVisitorTraitLangItem, // 37
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OpaqueStructLangItem, // 38
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EventLoopFactoryLangItem, // 39
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TypeIdLangItem, // 40
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$($variant),*
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}
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pub struct LanguageItems {
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items: [Option<ast::DefId>, ..41]
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items: [Option<ast::DefId>, ..$num_lang_items]
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}
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impl LanguageItems {
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pub fn new() -> LanguageItems {
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LanguageItems {
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items: [ None, ..41 ]
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items: [ None, ..$num_lang_items ]
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}
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}
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@ -103,61 +63,11 @@ pub fn items<'a>(&'a self) -> Enumerate<vec::VecIterator<'a, Option<ast::DefId>>
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pub fn item_name(index: uint) -> &'static str {
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match index {
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0 => "freeze",
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1 => "send",
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2 => "sized",
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3 => "drop",
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4 => "add",
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5 => "sub",
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6 => "mul",
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7 => "div",
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8 => "rem",
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9 => "neg",
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10 => "not",
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11 => "bitxor",
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12 => "bitand",
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13 => "bitor",
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14 => "shl",
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15 => "shr",
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16 => "index",
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17 => "eq",
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18 => "ord",
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19 => "str_eq",
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20 => "uniq_str_eq",
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21 => "fail_",
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22 => "fail_bounds_check",
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23 => "exchange_malloc",
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24 => "closure_exchange_malloc",
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25 => "exchange_free",
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26 => "malloc",
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27 => "free",
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28 => "borrow_as_imm",
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29 => "borrow_as_mut",
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30 => "return_to_mut",
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31 => "check_not_borrowed",
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32 => "strdup_uniq",
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33 => "record_borrow",
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34 => "unrecord_borrow",
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35 => "start",
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36 => "ty_desc",
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37 => "ty_visitor",
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38 => "opaque",
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39 => "event_loop_factory",
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40 => "type_id",
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$( $num => $name, )*
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_ => "???"
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}
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}
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// FIXME #4621: Method macros sure would be nice here.
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pub fn require(&self, it: LangItem) -> Result<ast::DefId, ~str> {
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match self.items[it as uint] {
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Some(id) => Ok(id),
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@ -178,133 +88,11 @@ pub fn to_builtin_kind(&self, id: ast::DefId) -> Option<BuiltinBound> {
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}
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}
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pub fn freeze_trait(&self) -> Option<ast::DefId> {
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self.items[FreezeTraitLangItem as uint]
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}
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pub fn send_trait(&self) -> Option<ast::DefId> {
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self.items[SendTraitLangItem as uint]
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}
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pub fn sized_trait(&self) -> Option<ast::DefId> {
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self.items[SizedTraitLangItem as uint]
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}
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pub fn drop_trait(&self) -> Option<ast::DefId> {
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self.items[DropTraitLangItem as uint]
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}
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pub fn add_trait(&self) -> Option<ast::DefId> {
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self.items[AddTraitLangItem as uint]
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}
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pub fn sub_trait(&self) -> Option<ast::DefId> {
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self.items[SubTraitLangItem as uint]
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}
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pub fn mul_trait(&self) -> Option<ast::DefId> {
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self.items[MulTraitLangItem as uint]
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}
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pub fn div_trait(&self) -> Option<ast::DefId> {
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self.items[DivTraitLangItem as uint]
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}
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pub fn rem_trait(&self) -> Option<ast::DefId> {
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self.items[RemTraitLangItem as uint]
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}
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pub fn neg_trait(&self) -> Option<ast::DefId> {
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self.items[NegTraitLangItem as uint]
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}
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pub fn not_trait(&self) -> Option<ast::DefId> {
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self.items[NotTraitLangItem as uint]
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}
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pub fn bitxor_trait(&self) -> Option<ast::DefId> {
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self.items[BitXorTraitLangItem as uint]
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}
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pub fn bitand_trait(&self) -> Option<ast::DefId> {
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self.items[BitAndTraitLangItem as uint]
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}
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pub fn bitor_trait(&self) -> Option<ast::DefId> {
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self.items[BitOrTraitLangItem as uint]
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}
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pub fn shl_trait(&self) -> Option<ast::DefId> {
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self.items[ShlTraitLangItem as uint]
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}
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pub fn shr_trait(&self) -> Option<ast::DefId> {
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self.items[ShrTraitLangItem as uint]
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}
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pub fn index_trait(&self) -> Option<ast::DefId> {
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self.items[IndexTraitLangItem as uint]
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}
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pub fn eq_trait(&self) -> Option<ast::DefId> {
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self.items[EqTraitLangItem as uint]
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}
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pub fn ord_trait(&self) -> Option<ast::DefId> {
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self.items[OrdTraitLangItem as uint]
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}
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pub fn str_eq_fn(&self) -> Option<ast::DefId> {
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self.items[StrEqFnLangItem as uint]
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}
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pub fn uniq_str_eq_fn(&self) -> Option<ast::DefId> {
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self.items[UniqStrEqFnLangItem as uint]
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}
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pub fn fail_fn(&self) -> Option<ast::DefId> {
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self.items[FailFnLangItem as uint]
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}
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pub fn fail_bounds_check_fn(&self) -> Option<ast::DefId> {
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self.items[FailBoundsCheckFnLangItem as uint]
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}
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pub fn exchange_malloc_fn(&self) -> Option<ast::DefId> {
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self.items[ExchangeMallocFnLangItem as uint]
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}
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pub fn closure_exchange_malloc_fn(&self) -> Option<ast::DefId> {
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self.items[ClosureExchangeMallocFnLangItem as uint]
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}
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pub fn exchange_free_fn(&self) -> Option<ast::DefId> {
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self.items[ExchangeFreeFnLangItem as uint]
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}
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pub fn malloc_fn(&self) -> Option<ast::DefId> {
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self.items[MallocFnLangItem as uint]
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}
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pub fn free_fn(&self) -> Option<ast::DefId> {
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self.items[FreeFnLangItem as uint]
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}
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pub fn borrow_as_imm_fn(&self) -> Option<ast::DefId> {
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self.items[BorrowAsImmFnLangItem as uint]
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}
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pub fn borrow_as_mut_fn(&self) -> Option<ast::DefId> {
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self.items[BorrowAsMutFnLangItem as uint]
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}
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pub fn return_to_mut_fn(&self) -> Option<ast::DefId> {
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self.items[ReturnToMutFnLangItem as uint]
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}
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pub fn check_not_borrowed_fn(&self) -> Option<ast::DefId> {
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self.items[CheckNotBorrowedFnLangItem as uint]
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}
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pub fn strdup_uniq_fn(&self) -> Option<ast::DefId> {
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self.items[StrDupUniqFnLangItem as uint]
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}
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pub fn record_borrow_fn(&self) -> Option<ast::DefId> {
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self.items[RecordBorrowFnLangItem as uint]
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}
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pub fn unrecord_borrow_fn(&self) -> Option<ast::DefId> {
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self.items[UnrecordBorrowFnLangItem as uint]
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}
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pub fn start_fn(&self) -> Option<ast::DefId> {
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self.items[StartFnLangItem as uint]
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}
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pub fn ty_desc(&self) -> Option<ast::DefId> {
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self.items[TyDescStructLangItem as uint]
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}
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pub fn ty_visitor(&self) -> Option<ast::DefId> {
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self.items[TyVisitorTraitLangItem as uint]
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}
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pub fn opaque(&self) -> Option<ast::DefId> {
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self.items[OpaqueStructLangItem as uint]
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}
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pub fn event_loop_factory(&self) -> Option<ast::DefId> {
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self.items[EventLoopFactoryLangItem as uint]
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}
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pub fn type_id(&self) -> Option<ast::DefId> {
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self.items[TypeIdLangItem as uint]
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}
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$(
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pub fn $method(&self) -> Option<ast::DefId> {
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self.items[$variant as uint]
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}
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)*
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}
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struct LanguageItemCollector {
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@ -343,53 +131,7 @@ impl LanguageItemCollector {
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pub fn new(session: Session) -> LanguageItemCollector {
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let mut item_refs = HashMap::new();
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item_refs.insert("freeze", FreezeTraitLangItem as uint);
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item_refs.insert("send", SendTraitLangItem as uint);
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item_refs.insert("sized", SizedTraitLangItem as uint);
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item_refs.insert("drop", DropTraitLangItem as uint);
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item_refs.insert("add", AddTraitLangItem as uint);
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item_refs.insert("sub", SubTraitLangItem as uint);
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item_refs.insert("mul", MulTraitLangItem as uint);
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item_refs.insert("div", DivTraitLangItem as uint);
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item_refs.insert("rem", RemTraitLangItem as uint);
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item_refs.insert("neg", NegTraitLangItem as uint);
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item_refs.insert("not", NotTraitLangItem as uint);
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item_refs.insert("bitxor", BitXorTraitLangItem as uint);
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item_refs.insert("bitand", BitAndTraitLangItem as uint);
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item_refs.insert("bitor", BitOrTraitLangItem as uint);
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item_refs.insert("shl", ShlTraitLangItem as uint);
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item_refs.insert("shr", ShrTraitLangItem as uint);
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item_refs.insert("index", IndexTraitLangItem as uint);
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item_refs.insert("eq", EqTraitLangItem as uint);
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item_refs.insert("ord", OrdTraitLangItem as uint);
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item_refs.insert("str_eq", StrEqFnLangItem as uint);
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item_refs.insert("uniq_str_eq", UniqStrEqFnLangItem as uint);
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item_refs.insert("fail_", FailFnLangItem as uint);
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item_refs.insert("fail_bounds_check",
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FailBoundsCheckFnLangItem as uint);
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item_refs.insert("exchange_malloc", ExchangeMallocFnLangItem as uint);
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item_refs.insert("closure_exchange_malloc", ClosureExchangeMallocFnLangItem as uint);
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item_refs.insert("exchange_free", ExchangeFreeFnLangItem as uint);
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item_refs.insert("malloc", MallocFnLangItem as uint);
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item_refs.insert("free", FreeFnLangItem as uint);
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item_refs.insert("borrow_as_imm", BorrowAsImmFnLangItem as uint);
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item_refs.insert("borrow_as_mut", BorrowAsMutFnLangItem as uint);
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item_refs.insert("return_to_mut", ReturnToMutFnLangItem as uint);
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item_refs.insert("check_not_borrowed",
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CheckNotBorrowedFnLangItem as uint);
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item_refs.insert("strdup_uniq", StrDupUniqFnLangItem as uint);
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item_refs.insert("record_borrow", RecordBorrowFnLangItem as uint);
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item_refs.insert("unrecord_borrow", UnrecordBorrowFnLangItem as uint);
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item_refs.insert("start", StartFnLangItem as uint);
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item_refs.insert("ty_desc", TyDescStructLangItem as uint);
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item_refs.insert("ty_visitor", TyVisitorTraitLangItem as uint);
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item_refs.insert("opaque", OpaqueStructLangItem as uint);
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item_refs.insert("event_loop_factory", EventLoopFactoryLangItem as uint);
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item_refs.insert("type_id", TypeIdLangItem as uint);
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$( item_refs.insert($name, $variant as uint); )*
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LanguageItemCollector {
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session: session,
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@ -458,3 +200,62 @@ pub fn collect_language_items(crate: &ast::Crate,
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session.abort_if_errors();
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items
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}
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// End of the macro
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}
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}
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lets_do_this! {
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There are 41 lang items.
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// ID, Variant name, Name, Method name;
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0, FreezeTraitLangItem, "freeze", freeze_trait;
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1, SendTraitLangItem, "send", send_trait;
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2, SizedTraitLangItem, "sized", sized_trait;
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3, DropTraitLangItem, "drop", drop_trait;
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4, AddTraitLangItem, "add", add_trait;
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5, SubTraitLangItem, "sub", sub_trait;
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6, MulTraitLangItem, "mul", mul_trait;
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7, DivTraitLangItem, "div", div_trait;
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8, RemTraitLangItem, "rem", rem_trait;
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9, NegTraitLangItem, "neg", neg_trait;
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10, NotTraitLangItem, "not", not_trait;
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11, BitXorTraitLangItem, "bitxor", bitxor_trait;
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12, BitAndTraitLangItem, "bitand", bitand_trait;
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13, BitOrTraitLangItem, "bitor", bitor_trait;
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14, ShlTraitLangItem, "shl", shl_trait;
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15, ShrTraitLangItem, "shr", shr_trait;
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16, IndexTraitLangItem, "index", index_trait;
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17, EqTraitLangItem, "eq", eq_trait;
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18, OrdTraitLangItem, "ord", ord_trait;
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19, StrEqFnLangItem, "str_eq", str_eq_fn;
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20, UniqStrEqFnLangItem, "uniq_str_eq", uniq_str_eq_fn;
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21, FailFnLangItem, "fail_", fail_fn;
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22, FailBoundsCheckFnLangItem, "fail_bounds_check", fail_bounds_check_fn;
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23, ExchangeMallocFnLangItem, "exchange_malloc", exchange_malloc_fn;
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24, ClosureExchangeMallocFnLangItem, "closure_exchange_malloc", closure_exchange_malloc_fn;
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25, ExchangeFreeFnLangItem, "exchange_free", exchange_free_fn;
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26, MallocFnLangItem, "malloc", malloc_fn;
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27, FreeFnLangItem, "free", free_fn;
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28, BorrowAsImmFnLangItem, "borrow_as_imm", borrow_as_imm_fn;
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29, BorrowAsMutFnLangItem, "borrow_as_mut", borrow_as_mut_fn;
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30, ReturnToMutFnLangItem, "return_to_mut", return_to_mut_fn;
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31, CheckNotBorrowedFnLangItem, "check_not_borrowed", check_not_borrowed_fn;
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32, StrDupUniqFnLangItem, "strdup_uniq", strdup_uniq_fn;
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33, RecordBorrowFnLangItem, "record_borrow", record_borrow_fn;
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34, UnrecordBorrowFnLangItem, "unrecord_borrow", unrecord_borrow_fn;
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35, StartFnLangItem, "start", start_fn;
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36, TyDescStructLangItem, "ty_desc", ty_desc;
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37, TyVisitorTraitLangItem, "ty_visitor", ty_visitor;
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38, OpaqueStructLangItem, "opaque", opaque;
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39, EventLoopFactoryLangItem, "event_loop_factory", event_loop_factory;
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40, TypeIdLangItem, "type_id", type_id;
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}
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