" Vim syntax file
" Language: Intel HEX
" Maintainer: Markus Heidelberg <markus.heidelberg@web.de>
" Previous version: Sams Ricahrd <sams@ping.at>
" Last Change: 2015 Feb 24
" Each record (line) is built as follows:
"
" field digits states
"
" +----------+
" | start | 1 (':') hexRecStart
" +----------+
" | count | 2 hexDataByteCount
" +----------+
" | address | 4 hexNoAddress, hexDataAddress, (hexAddressFieldUnknown)
" +----------+
" | type | 2 hexRecType, (hexRecTypeUnknown)
" +----------+
" | data | 0..510 hexDataOdd, hexDataEven, hexExtendedAddress, hexStartAddress, (hexDataFieldUnknown, hexDataUnexpected)
" +----------+
" | checksum | 2 hexChecksum
" +----------+
"
" States in parentheses in the upper format description indicate that they
" should not appear in a valid file.
" quit when a syntax file was already loaded
if exists("b:current_syntax")
finish
endif
syn match hexRecStart "^:"
syn match hexDataByteCount "^:[0-9a-fA-F]\{2}" contains=hexRecStart nextgroup=hexAddress
syn match hexAddress "[0-9a-fA-F]\{4}" transparent contained nextgroup=hexRecTypeUnknown,hexRecType
" The address field groups include the record type field in the last 2
" characters, the proper match for highlighting follows below.
syn match hexAddressFieldUnknown "^:[0-9a-fA-F]\{8}" contains=hexDataByteCount nextgroup=hexDataFieldUnknown,hexChecksum
syn match hexDataAddress "^:[0-9a-fA-F]\{6}00" contains=hexDataByteCount nextgroup=hexDataOdd,hexChecksum
syn match hexNoAddress "^:[0-9a-fA-F]\{6}01" contains=hexDataByteCount nextgroup=hexDataUnexpected,hexChecksum
syn match hexNoAddress "^:[0-9a-fA-F]\{6}0[24]" contains=hexDataByteCount nextgroup=hexExtendedAddress
syn match hexNoAddress "^:[0-9a-fA-F]\{6}0[35]" contains=hexDataByteCount nextgroup=hexStartAddress
syn match hexRecTypeUnknown "[0-9a-fA-F]\{2}" contained
syn match hexRecType "0[0-5]" contained
syn match hexDataFieldUnknown "[0-9a-fA-F]\{2}" contained nextgroup=hexDataFieldUnknown,hexChecksum
" alternating highlight per byte for easier reading
syn match hexDataOdd "[0-9a-fA-F]\{2}" contained nextgroup=hexDataEven,hexChecksum
syn match hexDataEven "[0-9a-fA-F]\{2}" contained nextgroup=hexDataOdd,hexChecksum
" data bytes which should not exist
syn match hexDataUnexpected "[0-9a-fA-F]\{2}" contained nextgroup=hexDataUnexpected,hexChecksum
" Data digit pair regex usage also results in only highlighting the checksum
" if the number of data characters is even.
" special data fields
syn match hexExtendedAddress "[0-9a-fA-F]\{4}" contained nextgroup=hexDataUnexpected,hexChecksum
syn match hexStartAddress "[0-9a-fA-F]\{8}" contained nextgroup=hexDataUnexpected,hexChecksum
syn match hexChecksum "[0-9a-fA-F]\{2}$" contained
" Folding Data Records below an Extended Segment/Linear Address Record
syn region hexExtAdrBlock start="^:[0-9a-fA-F]\{7}[24]" skip="^:[0-9a-fA-F]\{7}0" end="^:"me=s-1 fold transparent
" Define the default highlighting.
" Only when an item doesn't have highlighting yet
" The default methods for highlighting. Can be overridden later
hi def link hexRecStart hexRecType
hi def link hexDataByteCount Constant
hi def hexAddressFieldUnknown term=italic cterm=italic gui=italic
hi def link hexDataAddress Comment
hi def link hexNoAddress DiffAdd
hi def link hexRecTypeUnknown hexRecType
hi def link hexRecType WarningMsg
hi def hexDataFieldUnknown term=italic cterm=italic gui=italic
hi def hexDataOdd term=bold cterm=bold gui=bold
hi def hexDataEven term=NONE cterm=NONE gui=NONE
hi def link hexDataUnexpected Error
hi def link hexExtendedAddress hexDataAddress
hi def link hexStartAddress hexDataAddress
hi def link hexChecksum DiffChange
let b:current_syntax = "hex"
" vim: ts=8
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