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115 lines
5.3 KiB
Plaintext
115 lines
5.3 KiB
Plaintext
# http://purescript.org
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# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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# Syntax reference
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# https://github.com/purescript/documentation/blob/master/language/Syntax.md
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# Detection
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# ‾‾‾‾‾‾‾‾‾
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hook global BufCreate .*[.](purs) %{
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set-option buffer filetype purescript
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}
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# Initialization
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# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
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hook global WinSetOption filetype=purescript %{
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require-module purescript
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set-option buffer extra_word_chars '_' "'"
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hook window ModeChange pop:insert:.* -group purescript-trim-indent purescript-trim-indent
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hook window InsertChar \n -group purescript-indent purescript-indent-on-new-line
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hook -once -always window WinSetOption filetype=.* %{ remove-hooks window purescript-.+ }
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}
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hook -group purescript-highlight global WinSetOption filetype=purescript %{
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add-highlighter window/purescript ref purescript
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hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/purescript }
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}
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provide-module purescript %§
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# Highlighters
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# ‾‾‾‾‾‾‾‾‾‾‾‾
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add-highlighter shared/purescript regions
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add-highlighter shared/purescript/code default-region group
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add-highlighter shared/purescript/string region (?<!'\\)(?<!')" (?<!\\)(\\\\)*" fill string
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add-highlighter shared/purescript/comment region -recurse \{- \{- -\} fill comment
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add-highlighter shared/purescript/line_comment region --(?:[^!#$%&*+./<>?@\\\^|~=]|$) $ fill comment
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add-highlighter shared/purescript/code/ regex (?<!')\b0x+[A-Fa-f0-9]+ 0:value
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add-highlighter shared/purescript/code/ regex (?<!')\b\d+([.]\d+)? 0:value
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add-highlighter shared/purescript/code/ regex (?<!')\b(import|hiding|module)(?!')\b 0:keyword
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add-highlighter shared/purescript/code/ regex (?<!')\b(import)(?!')\b[^\n]+(?<!')\b(as)(?!')\b 2:keyword
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add-highlighter shared/purescript/code/ regex (?<!')\b(class|data|default|deriving|infix|infixl|infixr|instance|module|newtype|pattern|type|where)(?!')\b 0:keyword
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add-highlighter shared/purescript/code/ regex (?<!')\b(case|do|else|if|in|let|mdo|of|proc|rec|then)(?!')\b 0:attribute
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add-highlighter shared/purescript/code/ regex (?<!')\b(type|data)\b\s+(\bfamily\b)?(?!') 0:keyword
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# The complications below is because period has many uses:
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# As function composition operator (possibly without spaces) like "." and "f.g"
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# Hierarchical modules like "Data.Maybe"
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# Qualified imports like "Data.Maybe.Just", "Data.Maybe.maybe", "Control.Applicative.<$>"
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# Quantifier separator in "forall a . [a] -> [a]"
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# Enum comprehensions like "[1..]" and "[a..b]" (making ".." and "Module..." illegal)
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# matches uppercase identifiers: Monad Control.Monad
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# not non-space separated dot: Just.const
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add-highlighter shared/purescript/code/ regex \b([A-Z]['\w]*\.)*[A-Z]['\w]*(?!['\w])(?![.a-z]) 0:variable
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# matches infix identifier: `mod` `Apa._T'M`
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add-highlighter shared/purescript/code/ regex `\b([A-Z]['\w]*\.)*[\w]['\w]*` 0:operator
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# matches imported operators: M.! M.. Control.Monad.>>
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# not operator keywords: M... M.->
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add-highlighter shared/purescript/code/ regex \b[A-Z]['\w]*\.[~<=>|:!?/.@$*&#%+\^\-\\]+ 0:operator
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# matches dot: .
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# not possibly incomplete import: a.
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# not other operators: !. .!
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add-highlighter shared/purescript/code/ regex (?<![\w~<=>|:!?/.@$*&#%+\^\-\\])\.(?![~<=>|:!?/.@$*&#%+\^\-\\]) 0:operator
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# matches other operators: ... > < <= ^ <*> <$> etc
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# not dot: .
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# not operator keywords: @ .. -> :: ~
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add-highlighter shared/purescript/code/ regex (?<![~<=>|:!?/.@$*&#%+\^\-\\])[~<=>|:!?/.@$*&#%+\^\-\\]+ 0:operator
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# matches operator keywords: @ ->
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add-highlighter shared/purescript/code/ regex (?<![~<=>|:!?/.@$*&#%+\^\-\\])(@|~|<-|->|=>|::|=|:|[|])(?![~<=>|:!?/.@$*&#%+\^\-\\]) 1:keyword
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# matches: forall [..variables..] .
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# not the variables
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add-highlighter shared/purescript/code/ regex \b(forall|∀)\b[^.\n]*?(\.) 1:keyword 2:keyword
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# matches 'x' '\\' '\'' '\n' '\0'
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# not incomplete literals: '\'
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# not valid identifiers: w' _'
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add-highlighter shared/purescript/code/ regex \B'([^\\]|[\\]['"\w\d\\])' 0:string
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# this has to come after operators so '-' etc is correct
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# matches function names in type signatures
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add-highlighter shared/purescript/code/ regex ^\s*(?:where\s+|let\s+|default\s+)?([_a-z]['\w]*#?(?:,\s*[_a-z]['\w]*#?)*)\s+::\s 1:meta
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# Commands
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# ‾‾‾‾‾‾‾‾
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define-command -hidden purescript-trim-indent %{
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# remove trailing white spaces
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try %{ execute-keys -draft -itersel <a-x> s \h+$ <ret> d }
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}
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define-command -hidden purescript-indent-on-new-line %{
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evaluate-commands -draft -itersel %{
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# copy -- comments prefix and following white spaces
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try %{ execute-keys -draft k <a-x> s ^\h*\K--\h* <ret> y gh j P }
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# preserve previous line indent
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try %{ execute-keys -draft <semicolon> K <a-&> }
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# align to first clause
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try %{ execute-keys -draft <semicolon> k x X s ^\h*(if|then|else)?\h*(([\w']+\h+)+=)?\h*(case\h+[\w']+\h+of|do|let|where)\h+\K.* <ret> s \A|.\z <ret> & }
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# filter previous line
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try %{ execute-keys -draft k : purescript-trim-indent <ret> }
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# indent after lines beginning with condition or ending with expression or =(
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try %{ execute-keys -draft <semicolon> k x <a-k> ^\h*if|[=(]$|\b(case\h+[\w']+\h+of|do|let|where)$ <ret> j <a-gt> }
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}
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}
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§
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