191 lines
8.5 KiB
VimL
191 lines
8.5 KiB
VimL
" Vim syntax file
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" Language: Lex and Flex
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" Maintainer: This runtime file is looking for a new maintainer.
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" Former Maintainer: Charles E. Campbell
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" Contributor: Robert A. van Engelen <engelen@acm.org>
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" Version: 18
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" Last Change: Apr 24, 2020
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" 2024 Feb 19 by Vim Project (announce adoption)
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" quit when a syntax file was already loaded
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if exists("b:current_syntax")
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finish
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endif
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" Read the C++ syntax to start with
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let s:Cpath= fnameescape(expand("<sfile>:p:h")."/cpp.vim")
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if !filereadable(s:Cpath)
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for s:Cpath in split(globpath(&rtp,"syntax/cpp.vim"),"\n")
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if filereadable(fnameescape(s:Cpath))
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let s:Cpath= fnameescape(s:Cpath)
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break
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endif
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endfor
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endif
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exe "syn include @lexCcode ".s:Cpath
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" --- ========= ---
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" --- Lex stuff ---
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" --- ========= ---
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" Definitions
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" %%
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" Rules
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" %%
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" User Code
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"
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" --- ======= ---
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" --- Example ---
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" --- ======= ---
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"
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" // this is a valid lex file
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" // indented initial code block
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" #include <stdlib.h>
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" %{
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" // initial code block
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" #include <stdio.h>
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" const char *sep = "";
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" %}
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" %option outfile="scanner.c" noyywrap nodefault
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" %x COMMENT
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" id [A-Za-z_][A-Za-z0-9_]*
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" %%
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" // indented initial action code block
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" printf("BEGIN");
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" {id} printf("%s%s", sep, yytext); sep = "";
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" . |
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" \n { sep = "\n"; }
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" "/*" { BEGIN COMMENT; }
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" "//".* { }
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" <COMMENT>{
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" "*/" { BEGIN INITIAL; }
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" .|\n
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" }
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" <*><<EOF>> { // end of file
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" printf("\nEND\n");
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" yyterminate();
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" }
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" %%
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" void scan()
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" {
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" while (yylex())
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" continue;
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" }
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" /* main program */
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" int main()
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" {
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" scan();
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" }
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" Definitions Section with initial code blocks, abbreviations, options, states
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if has("folding")
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syn region lexAbbrvBlock fold start="^\S" end="^\ze%%" skipnl nextgroup=lexPatBlock contains=lexOptions,lexAbbrv,lexInitialCodeBlock,lexInclude,lexAbbrvComment,lexStartState
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else
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syn region lexAbbrvBlock start="^\S" end="^\ze%%" skipnl nextgroup=lexPatBlock contains=lexOptions,lexAbbrv,lexInitialCodeBlock,lexInclude,lexAbbrvComment,lexStartState
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endif
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syn match lexOptions "^%\a\+\(\s.*\|[^{]*\)$" contains=lexOptionsEq,lexPatString,lexSlashQuote,lexBrace,lexSlashBrace
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syn match lexOptionsEq "=" skipwhite contained
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syn match lexAbbrv "^\I\i*\s"me=e-1 skipwhite contained nextgroup=lexAbbrvPat
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syn match lexAbbrvPat "\s\S.*$"lc=1 contained contains=lexPatAbbrv,lexPatString,lexSlashQuote,lexBrace,lexSlashBrace nextgroup=lexAbbrv,lexInclude
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syn match lexStartState "^%\(xs\?\|s\)\(t\(a\(t\(e\?\)\?\)\?\)\?\)\?\(\s\+\I\i*\)\+\s*$" contained contains=lexStartStateCmd
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syn match lexStartStateCmd '^%\(xs\?\|s\)\(t\(a\(t\(e\?\)\?\)\?\)\?\)\?' contained
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if has("folding")
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syn region lexInitialCodeBlock fold start="^\s\+" end="^\S"me=e-1 contains=@lexCcode
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syn region lexInclude fold matchgroup=lexSep start="^%\a*{" end="^%\?}" contained contains=@lexCcode,lexCFunctions
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syn region lexAbbrvComment fold start="^\s*//" end="$" contains=@Spell
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syn region lexAbbrvComment fold start="^\s*/\*" end="\*/" contains=@Spell
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else
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syn region lexInitialCodeBlock start="^\s\+" end="^\S"me=e-1 contains=@lexCcode
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syn region lexInclude matchgroup=lexSep start="^%\a*{" end="^%\?}" contained contains=@lexCcode,lexCFunctions
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syn region lexAbbrvComment start="^\s*//" end="$" contains=@Spell
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syn region lexAbbrvComment start="^\s*/\*" end="\*/" contains=@Spell
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endif
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" Rules Section with patterns and actions
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if has("folding")
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syn region lexPatBlock fold matchgroup=Todo start="^%%" matchgroup=Todo end="^\ze%%" skipnl skipwhite nextgroup=lexFinalCodeBlock contains=lexPatTag,lexPatTagZone,lexPatComment,lexPat,lexPatSep,lexPatInclude
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syn region lexPat fold start="\S" skip="\\\\\|\\\s" end="\ze\(\s*$\|\s\+\(\h\|{\W\|{$\|[-+*]\|//\|/\*\)\)" skipwhite contained nextgroup=lexMorePat,lexPatSep,lexPatEnd contains=lexPatTag,lexPatString,lexSlashQuote,lexPatAbbrv,lexBrace,lexSlashBrace
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syn region lexPatInclude fold matchgroup=lexSep start="^%{" end="^%}" contained contains=@lexCcode
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syn region lexBrace fold matchgroup=Character start="\[" skip="\\.\|\[:\a\+:\]\|\[\.\a\+\.\]\|\[=.=\]" end="\]" contained
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syn region lexPatString fold matchgroup=String start=+"+ skip=+\\\\\|\\"+ matchgroup=String end=+"+ contained
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else
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syn region lexPatBlock matchgroup=Todo start="^%%" matchgroup=Todo end="^\ze%%" skipnl skipwhite nextgroup=lexFinalCodeBlock contains=lexPatTag,lexPatTagZone,lexPatComment,lexPat,lexPatSep,lexPatInclude
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syn region lexPat start="\S" skip="\\\\\|\\\s" end="\ze\(\s*$\|\s\+\(\h\|{\W\|{$\|[-+*]\|//\|/\*\)\)" skipwhite contained nextgroup=lexMorePat,lexPatSep,lexPatEnd contains=lexPatTag,lexPatString,lexSlashQuote,lexPatAbbrv,lexBrace,lexSlashBrace
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syn region lexPatInclude matchgroup=lexSep start="^%{" end="^%}" contained contains=@lexCcode
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syn region lexBrace matchgroup=Character start="\[" skip="\\.\|\[:\a\+:\]\|\[\.\a\+\.\]\|\[=.=\]" end="\]" contained
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syn region lexPatString matchgroup=String start=+"+ skip=+\\\\\|\\"+ matchgroup=String end=+"+ contained
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endif
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syn match lexPatAbbrv "{\I\i*}"hs=s+1,he=e-1 contained
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syn match lexPatTag "^<\^\?\(\I\i*\|\*\)\(,\^\?\(\I\i*\|\*\)\)*>" contained nextgroup=lexPat,lexMorePat,lexPatSep,lexPatEnd
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syn match lexPatTagZone "^<\^\?\(\I\i*\|\*\)\(,\^\?\(\I\i*\|\*\)\)*>\s*{$"me=e-1 contained nextgroup=lexPatTagZoneStart
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if has("folding")
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syn region lexPatTagZoneStart fold matchgroup=lexPatTag start='{$' end='^}' skipnl skipwhite contained contains=lexPatTag,lexPatTagZone,lexPatComment,lexPat,lexPatSep,lexPatInclude
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syn region lexPatComment fold start="//" end="$" skipnl contained contains=cTodo skipwhite nextgroup=lexPatComment,lexPat,@Spell
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syn region lexPatComment fold start="/\*" end="\*/" skipnl contained contains=cTodo skipwhite nextgroup=lexPatComment,lexPat,@Spell
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else
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syn region lexPatTagZoneStart matchgroup=lexPatTag start='{' end='^}' skipnl skipwhite contained contains=lexPatTag,lexPatTagZone,lexPatComment,lexPat,lexPatSep,lexPatInclude
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syn region lexPatComment start="//" end="$" skipnl contained contains=cTodo skipwhite nextgroup=lexPatComment,lexPat,@Spell
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syn region lexPatComment start="/\*" end="\*/" skipnl contained contains=cTodo skipwhite nextgroup=lexPatComment,lexPat,@Spell
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endif
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syn match lexPatEnd "\s*$" skipnl contained
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syn match lexPatCodeLine "[^{\[].*" contained contains=@lexCcode,lexCFunctions
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syn match lexMorePat "\s*|\s*$" skipnl contained nextgroup=lexPat,lexPatTag,lexPatComment
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syn match lexPatSep "\s\+" contained nextgroup=lexMorePat,lexPatCode,lexPatCodeLine
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syn match lexSlashQuote +\(\\\\\)*\\"+ contained
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syn match lexSlashBrace +\(\\\\\)*\\\[+ contained
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if has("folding")
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syn region lexPatCode fold matchgroup=Delimiter start="{" end="}" skipnl contained contains=@lexCcode,lexCFunctions
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else
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syn region lexPatCode matchgroup=Delimiter start="{" end="}" skipnl contained contains=@lexCcode,lexCFunctions
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endif
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" User Code Section with final code block
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syn region lexFinalCodeBlock matchgroup=Todo start="^%%" end="\%$" contained contains=@lexCcode
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" Lex macros which may appear in C/C++ code blocks
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syn keyword lexCFunctions BEGIN ECHO REJECT yytext YYText yyleng YYLeng yymore yyless yywrap yylook
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syn keyword lexCFunctions yyrestart yyterminate yylineno yycolumno yyin yyout
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syn keyword lexCFunctions input unput output winput wunput woutput
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syn keyword lexCFunctions yyinput yyunput yyoutput yywinput yywunput yywoutput
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" <c.vim> includes several ALLBUTs; these have to be treated so as to exclude lex* groups
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syn cluster cParenGroup add=lex.*
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syn cluster cDefineGroup add=lex.*
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syn cluster cPreProcGroup add=lex.*
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syn cluster cMultiGroup add=lex.*
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" Synchronization
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syn sync clear
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syn sync minlines=500
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syn sync match lexSyncPat grouphere lexPatBlock "^%[a-zA-Z]"
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syn sync match lexSyncPat groupthere lexPatBlock "^<$"
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syn sync match lexSyncPat groupthere lexPatBlock "^%%"
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" The default highlighting.
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if !exists("skip_lex_syntax_inits")
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hi def link lexAbbrvComment lexPatComment
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hi def link lexAbbrvPat lexPat
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hi def link lexAbbrv Special
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hi def link lexBrace lexPat
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hi def link lexCFunctions PreProc
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hi def link lexMorePat Special
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hi def link lexOptions PreProc
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hi def link lexOptionsEq Operator
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hi def link lexPatComment Comment
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hi def link lexPat Function
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hi def link lexPatString lexPat
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hi def link lexPatAbbrv Special
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hi def link lexPatTag Statement
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hi def link lexPatTagZone lexPatTag
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hi def link lexSep Delimiter
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hi def link lexSlashQuote lexPat
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hi def link lexSlashBrace lexPat
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hi def link lexStartState lexPatTag
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hi def link lexStartStateCmd Special
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endif
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let b:current_syntax = "lex"
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" vim:ts=8
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