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Diffstat (limited to 'runtime/syntax/basic.vim')
| -rw-r--r-- | runtime/syntax/basic.vim | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/runtime/syntax/basic.vim b/runtime/syntax/basic.vim new file mode 100644 index 0000000..b6bf23a --- /dev/null +++ b/runtime/syntax/basic.vim @@ -0,0 +1,380 @@ +" Vim syntax file +" Language: BASIC (QuickBASIC 4.5) +" Maintainer: Doug Kearns <dougkearns@gmail.com> +" Previous Maintainer: Allan Kelly <allan@fruitloaf.co.uk> +" Contributors: Thilo Six +" Last Change: 2022 Jun 22 + +" First version based on Micro$soft QBASIC circa 1989, as documented in +" 'Learn BASIC Now' by Halvorson&Rygmyr. Microsoft Press 1989. +" +" Second version attempts to match Microsoft QuickBASIC 4.5 while keeping FreeBASIC +" (-lang qb) and QB64 (excluding extensions) in mind. -- DJK + +" Prelude {{{1 +if exists("b:current_syntax") + finish +endif + +let s:cpo_save = &cpo +set cpo&vim + +syn iskeyword @,48-57,.,!,#,%,&,$ +syn case ignore + +" Whitespace Errors {{{1 +if exists("basic_space_errors") + if !exists("basic_no_trail_space_error") + syn match basicSpaceError display excludenl "\s\+$" + endif + if !exists("basic_no_tab_space_error") + syn match basicSpaceError display " \+\t"me=e-1 + endif +endif + +" Comment Errors {{{1 +if !exists("basic_no_comment_errors") + syn match basicCommentError "\<REM\>.*" +endif + +" Not Top Cluster {{{1 +syn cluster basicNotTop contains=@basicLineIdentifier,basicDataString,basicDataSeparator,basicTodo + +" Statements {{{1 + +syn cluster basicStatements contains=basicStatement,basicDataStatement,basicMetaRemStatement,basicPutStatement,basicRemStatement + +let s:statements =<< trim EOL " {{{2 + beep + bload + bsave + call + calls + case + chain + chdir + circle + clear + close + cls + color + com + common + const + declare + def + def\s\+seg + defdbl + defint + deflng + defsng + defstr + dim + do + draw + elseif + end + end\s\+\%(def\|function\|if\|select\|sub\|type\) + environ + erase + error + exit\s\+\%(def\|do\|for\|function\|sub\) + field + files + for + function + get + gosub + goto + if + input + ioctl + key + kill + let + line + line\s\+input + locate + lock + loop + lprint + lset + mkdir + name + next + on + on\s\+error + on\s\+uevent + open + open\s\+com + option + out + paint + palette + palette\s\+using + pcopy + pen + pmap + poke + preset + print + pset + randomize + read + redim + reset + restore + resume + return + rmdir + rset + run + select\s\+case + shared + shell + sleep + sound + static + stop + strig + sub + swap + system + troff + tron + type + uevent + unlock + using + view + view\s\+print + wait + wend + while + width + window + write +EOL +" }}} + +for s in s:statements + exe 'syn match basicStatement "\<' .. s .. '\>" contained' +endfor + +syn match basicStatement "\<\%(then\|else\)\>" nextgroup=@basicStatements skipwhite + +" DATA Statement +syn match basicDataSeparator "," contained +syn region basicDataStatement matchgroup=basicStatement start="\<data\>" matchgroup=basicStatementSeparator end=":\|$" contained contains=basicDataSeparator,basicDataString,basicNumber,basicFloat,basicString + +if !exists("basic_no_data_fold") + syn region basicMultilineData start="^\s*\<data\>.*\n\%(^\s*\<data\>\)\@=" end="^\s*\<data\>.*\n\%(^\s*\<data\>\)\@!" contains=basicDataStatement transparent fold keepend +endif + +" PUT File I/O and Graphics statements - needs special handling for graphics +" action verbs +syn match basicPutAction "\<\%(pset\|preset\|and\|or\|xor\)\>" contained +syn region basicPutStatement matchgroup=basicStatement start="\<put\>" matchgroup=basicStatementSeparator end=":\|$" contained contains=basicKeyword,basicPutAction,basicFilenumber + +" Keywords {{{1 +let s:keywords =<< trim EOL " {{{2 + absolute + access + alias + append + as + base + binary + byval + cdecl + com + def + do + for + function + gosub + goto + input + int86old + int86xold + interrupt + interruptx + is + key + len + list + local + lock + lprint + next + off + on + output + pen + play + random + read + resume + screen + seg + shared + signal + static + step + stop + strig + sub + timer + to + until + using + while + write +EOL +" }}} + +for k in s:keywords + exe 'syn match basicKeyword "\<' .. k .. '\>"' +endfor + +" Functions {{{1 +syn keyword basicFunction abs asc atn cdbl chr$ cint clng command$ cos csng +syn keyword basicFunction csrlin cvd cvdmbf cvi cvl cvs cvsmbf environ$ eof +syn keyword basicFunction erdev erdev$ erl err exp fileattr fix fre freefile +syn keyword basicFunction hex$ inkey$ inp input$ instr int ioctl$ left$ lbound +syn keyword basicFunction lcase$ len loc lof log lpos ltrim$ mkd$ mkdmbf$ mki$ +syn keyword basicFunction mkl$ mks$ mksmbf$ oct$ peek pen point pos right$ rnd +syn keyword basicFunction rtrim$ sadd setmem sgn sin space$ spc sqr stick str$ +syn keyword basicFunction strig string$ tab tan ubound ucase$ val valptr +syn keyword basicFunction valseg varptr varptr$ varseg + +" Functions and statements (same name) {{{1 +syn match basicStatement "\<\%(date\$\|mid\$\|play\|screen\|seek\|time\$\|timer\)\>" contained +syn match basicFunction "\<\%(date\$\|mid\$\|play\|screen\|seek\|time\$\|timer\)\>" + +" Types {{{1 +syn keyword basicType integer long single double string any + +" Strings {{{1 + +" Unquoted DATA strings - anything except [:,] and leading or trailing whitespace +" Needs lower priority than numbers +syn match basicDataString "[^[:space:],:]\+\%(\s\+[^[:space:],:]\+\)*" contained + +syn region basicString start=+"+ end=+"+ oneline + +" Booleans {{{1 +if exists("basic_booleans") + syn keyword basicBoolean true false +endif + +" Numbers {{{1 + +" Integers +syn match basicNumber "-\=&o\=\o\+[%&]\=\>" +syn match basicNumber "-\=&h\x\+[%&]\=\>" +syn match basicNumber "-\=\<\d\+[%&]\=\>" + +" Floats +syn match basicFloat "-\=\<\d\+\.\=\d*\%(\%([ed][+-]\=\d*\)\|[!#]\)\=\>" +syn match basicFloat "-\=\<\.\d\+\%(\%([ed][+-]\=\d*\)\|[!#]\)\=\>" + +" Statement anchors {{{1 +syn match basicLineStart "^" nextgroup=@basicStatements,@basicLineIdentifier skipwhite +syn match basicStatementSeparator ":" nextgroup=@basicStatements skipwhite + +" Line numbers and labels {{{1 + +" QuickBASIC limits these to 65,529 and 40 chars respectively +syn match basicLineNumber "\d\+" nextgroup=@basicStatements skipwhite contained +syn match basicLineLabel "\a[[:alnum:]]*\ze\s*:" nextgroup=@basicStatements skipwhite contained + +syn cluster basicLineIdentifier contains=basicLineNumber,basicLineLabel + +" Line Continuation {{{1 +syn match basicLineContinuation "\s*\zs_\ze\s*$" + +" Type suffixes {{{1 +if exists("basic_type_suffixes") + syn match basicTypeSuffix "\a[[:alnum:].]*\zs[$%&!#]" +endif + +" File numbers {{{1 +syn match basicFilenumber "#\d\+" +syn match basicFilenumber "#\a[[:alnum:].]*[%&!#]\=" + +" Operators {{{1 +if exists("basic_operators") + syn match basicArithmeticOperator "[-+*/\\^]" + syn match basicRelationalOperator "<>\|<=\|>=\|[><=]" +endif +syn match basicLogicalOperator "\<\%(not\|and\|or\|xor\|eqv\|imp\)\>" +syn match basicArithmeticOperator "\<mod\>" + +" Metacommands {{{1 +" Note: No trailing word boundaries. Text may be freely mixed however there +" must be only leading whitespace prior to the first metacommand +syn match basicMetacommand "$INCLUDE\s*:\s*'[^']\+'" contained containedin=@basicMetaComments +syn match basicMetacommand "$\%(DYNAMIC\|STATIC\)" contained containedin=@basicMetaComments + +" Comments {{{1 +syn keyword basicTodo TODO FIXME XXX NOTE contained + +syn region basicRemStatement matchgroup=basicStatement start="REM\>" end="$" contains=basicTodo,@Spell contained +syn region basicComment start="'" end="$" contains=basicTodo,@Spell + +if !exists("basic_no_comment_fold") + syn region basicMultilineComment start="^\s*'.*\n\%(\s*'\)\@=" end="^\s*'.*\n\%(\s*'\)\@!" contains=@basicComments transparent fold keepend +endif + +" Metacommands +syn region basicMetaRemStatement matchgroup=basicStatement start="REM\>\s*\$\@=" end="$" contains=basicTodo contained +syn region basicMetaComment start="'\s*\$\@=" end="$" contains=basicTodo + +syn cluster basicMetaComments contains=basicMetaComment,basicMetaRemStatement +syn cluster basicComments contains=basicComment,basicMetaComment + +"syn sync ccomment basicComment + +" Default Highlighting {{{1 +hi def link basicArithmeticOperator basicOperator +hi def link basicBoolean Boolean +hi def link basicComment Comment +hi def link basicCommentError Error +hi def link basicDataString basicString +hi def link basicFilenumber basicTypeSuffix " TODO: better group +hi def link basicFloat Float +hi def link basicFunction Function +hi def link basicKeyword Keyword +hi def link basicLineIdentifier LineNr +hi def link basicLineContinuation Special +hi def link basicLineLabel basicLineIdentifier +hi def link basicLineNumber basicLineIdentifier +hi def link basicLogicalOperator basicOperator +hi def link basicMetacommand SpecialComment +hi def link basicMetaComment Comment +hi def link basicMetaRemStatement Comment +hi def link basicNumber Number +hi def link basicOperator Operator +hi def link basicPutAction Keyword +hi def link basicRelationalOperator basicOperator +hi def link basicRemStatement Comment +hi def link basicSpaceError Error +hi def link basicStatementSeparator Special +hi def link basicStatement Statement +hi def link basicString String +hi def link basicTodo Todo +hi def link basicType Type +hi def link basicTypeSuffix Special +if exists("basic_legacy_syntax_groups") + hi def link basicTypeSpecifier Type + hi def link basicTypeSuffix basicTypeSpecifier +endif + +" Postscript {{{1 +let b:current_syntax = "basic" + +let &cpo = s:cpo_save +unlet s:cpo_save + +" vim: nowrap sw=2 sts=2 ts=8 noet fdm=marker: |