"
"   CopyRight Roberti & Parau Enterprises, Inc.  2021-2023
"
"   This work is licensed under the Creative Commons Attribution 4.0 International License.
"   To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
"    or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
"
"   Syntax and color settings for Da Vinci Assembler Source Code
"
"   Written by Paolo Roberti
"
"
if exists("b:current_syntax")
    finish
endif

let b:current_syntax = "asm"

syn match   dvaOperator         "[+-=\*/%^|&]"
syn match   dvaDecimal          "\<\d*\(\.\d*\)\?\([E][+,-]\d\+\)\?\>"
syn match   dvaHexaDecimal      "\<0x\x\+\>"

syn match   dvaComma            ","

syn region  dvaString           start=/"/ skip=/\\"/ end=/"/

syn region  dvaCharError        start=/'/ skip=/\\'/ end=/'/
syn match   dvaCharacter        "\('[^\\']'\)\|\('\\['obtnvfr]'\)\|\('\\\\'\)\|\('x\x\x'\)"

syn region  dvaComment          start="//"  end="$"
syn region  dvaContinuation     start="/>"  end="$"

syn region  dvaMacro            start="^#MACRO\s*$"  end="^#END\s*$"

syn match   dvaSymbol           "\<\h\w*\(\.\h\w*\)*\>"
syn match   dvaLabel            "^\h\w*\(\.\h\w*\)*\(\s\+\|$\)"

syn match   dvaOpCode           "\(^\(\s*\(/>.*\n\)\)*\s\+\)\@<=\h\w*\(\.\h\w*\)*\(\s\+\|$\)"
syn match   dvaOpCode           "\(^\s\+\)\@<=\h\w*\(\.\h\w*\)*\(\s\+\|$\)"
syn match   dvaOpCode           "\(\(^\h\w*\(\.\h\w*\)*\)\s\+\)\@<=\h\w*\(\.\h\w*\)*\(\s\+\|$\)"

syn match   dvaContError        "\(/>.*\n\)\@<=\S\+"

"
"   Parenthesis match
"
syn cluster dvaParenGroup       contains=dvaOperator,dvaDEcimal,dvaHexaDecimal,dvaComma,dvaString,dvaCharacter,dvaContinuation,dvaSymbol,dvaLabel,dvaOpCode,
syn match   dvaParenError       display ")"
syn region  dvaParen            transparent matchgroup=dvaParenGrp skip="/>.*$" start="(" end=")" contains=@dvaParenGroup,dvaParen 

"
"   Bracket match
"
syn cluster dvaBracketGroup     contains=dvaOperator,dvaDEcimal,dvaHexaDecimal,dvaParentGrp,dvaComma,dvaString,dvaCharacter,dvaContinuation,dvaSymbol,dvaLabel,dvaOpCode,
syn match   dvaBracketError     display "\]"
syn region  dvaBracket          transparent matchgroup=dvaBracketGrp skip="/>.*$" start="\[" end="\]" contains=@dvaBracketGroup

"
"   Colors  used when background set ro 'dark' or otherwise
"
"   If you use color setting file comment out the following or delete it
"   and add highlight definitions for dva* groups
"
hi  clear
set bg="dark"

hi  normal                      guifg=#00FF00       guibg=#101030

hi  nCursor                     guibg=#F59D15       guifg=#101030
hi  iCursor                     guibg=#00FFFF       guifg=#101030
hi  rCursor                     guibg=#FF00FF       guifg=#101030

hi  dvaOperator                 guifg=#FFFFFF
hi  dvaDecimal                  guifg=#F5AD15
hi  dvaHexaDecimal              guifg=#F5AD15

hi  dvaComma                    guifg=#FFFFFF

hi  dvaString                   guifg=#F5AD15
hi  dvaCharError                guifg=#FFFFFF       guibg=#FF0000
hi  dvaCharacter                guifg=#F5AD15

hi  dvaComment                  guifg=#C0C0C0
hi  dvaContinuation             guifg=#C0C0C0
hi  dvaMacro                    guifg=#00FF00

hi  dvaSymbol                   guifg=#00FF00
hi  dvaLabel                    guifg=#FF80E0
hi  dvaLabelError               guifg=#FFFFFF       guibg=#FF0000
hi  dvaOpCode                   guifg=#55FFFF

hi  dvaContError                guifg=#FFFFFF       guibg=#FF0000

hi  dvaParenGrp                 guifg=#FFFFFF
hi  dvaParenError               guifg=#FFFFFF       guibg=#FF0000

hi  dvaBracketGrp               guifg=#FFFFFF
hi  dvaBracketError             guifg=#FFFFFF       guibg=#FF0000