Question

我生成了一些haskell代码（在haskell中），我需要能够检测与haskell关键字冲突的名称。是否有某个地方以编程方式检查String是否是Haskell关键字？

我当然可以自己编制它们的清单，但我不想重新发明轮子。此外，如果引入了新关键字（通过扩展或新规范），我希望此列表能够自动更新。

Answer 1

hscolour uses such a simple list for its tokenise function

keywords =
  ["case","class","data","default","deriving","do","else","forall"
  ,"if","import","in","infix","infixl","infixr","instance","let","module"
  ,"newtype","of","qualified","then","type","where","_"
  ,"foreign","ccall","as","safe","unsafe"]
keyglyphs =
  ["..","::","=","\\","|","<-","->","@","~","=>","[","]"]
layoutchars =
  map (:[]) ";{}(),"
symbols =
  "!#$%&*+./<=>?@\\^|-~"

你可以

import Language.Haskell.HsColour.Classify

isKeyword :: String -> Bool
isKeyword = (== [Keyword]) . map fst . tokenise

Answer 2

这是：https://github.com/ghc/ghc/blob/d784bdeb62a6b11831c5235a97449ff2a86dcc52/compiler/parser/Lexer.x#L708-L765

我确定它是完整列表，因为它是GHC词法分析器所理解的保留字。另一个有趣的列表是reservedSymsFS - 保留符号。

我在哪里可以找到保留的Haskell关键字列表为[String]

2 个答案: