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44 lines
1.6 KiB
VimL
44 lines
1.6 KiB
VimL
" Vim syntax file
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" Language: J
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" Maintainer: David Bürgin <676c7473@gmail.com>
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" Last Change: 2013-09-21
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if exists("b:current_syntax")
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finish
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endif
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syntax case match
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syntax sync minlines=50
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syn match jControl /\<\%(assert\|break\|case\|catch[dt]\=\|continue\|do\|else\%(if\)\=\|end\|fcase\|for\|if\|return\|select\|throw\|try\|whil\%(e\|st\)\)\./
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syn match jControl /\<\%(for\|goto\|label\)_\a\k*\./
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syn region jString oneline start=/'/ skip=/''/ end=/'/
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" Patterns for numbers in general, rational numbers, numbers with explicit
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" base, infinities, and numbers with extended precision.
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"
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" Matching J numbers is difficult. The regular expression used for the general
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" case roughly embodies this grammar sketch:
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"
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" EXP := /_?\d+(\.\d*)?([eE]_?\d+)?/
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" COMP := EXP | EXP (j|a[dr]) EXP
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" PIEU := COMP | COMP [px] COMP
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"
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" For the rest, a compromise between correctness and practicality was made.
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" See http://www.jsoftware.com/help/dictionary/dcons.htm for reference.
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syn match jNumber /\<_\=\d\+\%(\.\d*\)\=\%([eE]_\=\d\+\)\=\%(\%(j\|a[dr]\)_\=\d\+\%(\.\d*\)\=\%([eE]_\=\d\+\)\=\)\=\%([px]_\=\d\+\%(\.\d*\)\=\%([eE]_\=\d\+\)\=\%(\%(j\|a[dr]\)_\=\d\+\%(\.\d*\)\=\%([eE]_\=\d\+\)\=\)\=\)\=/
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syn match jNumber /\<_\=\d\+\%(\.\d*\)\=\%([eE]_\=\d\+\)\=r_\=\d\+\%(\.\d*\)\=\%([eE]_\=\d\+\)\=/
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syn match jNumber /\<_\=\d\+\%([eE]\d\+\)\=b_\=[0-9a-z]\+/
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syn match jNumber /\<__\=\>/
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syn match jNumber /\<_\=\d\+x\>/
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syn match jComment /NB\..*$/
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hi def link jControl Statement
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hi def link jString String
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hi def link jNumber Number
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hi def link jComment Comment
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let b:current_syntax = "j"
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