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Introduce GenericParam

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This commit is contained in:
Aleksey Kladov 2020-07-30 18:52:02 +02:00
parent 917c89c103
commit 3dce34aaf8
5 changed files with 170 additions and 103 deletions
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37
xtask/src/codegen/rust.ungram
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@ -154,6 +154,25 @@ ExternItemList =
ExternItem =
Fn | Static | MacroCall
GenericParamList =
'<' (GenericParam (',' GenericParam)* ','?)? '>'
GenericParam =
LifetimeParam
| TypeParam
| ConstParam
TypeParam =
Attr* Name (':' TypeBoundList?)?
('=' default_type:TypeRef)?
ConstParam =
Attr* 'const' Name ':' ascribed_type:TypeRef
('=' default_val:Expr)?
LifetimeParam =
Attr* 'lifetime'
ParenType =
'(' TypeRef ')'
@ -400,24 +419,6 @@ MacroStmts =
Attr =
'#' '!'? '[' Path ('=' input:AttrInput)? ']'
GenericParamList =
'<'
TypeParam*
LifetimeParam*
ConstParam*
'>'
TypeParam =
Attr* Name (':' TypeBoundList?)?
('=' default_type:TypeRef)?
ConstParam =
Attr* 'const' Name ':' ascribed_type:TypeRef
('=' default_val:Expr)?
LifetimeParam =
Attr* 'lifetime'
TypeBound =
'lifetime' | 'const'? TypeRef