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" Vim syntax file
" Language: Motorola S-Record
" Maintainer: Markus Heidelberg <markus.heidelberg@web.de>
" Last Change: 2015 Feb 24
" Each record (line) is built as follows:
"
" field digits states
"
" +----------+
" | start | 1 ('S') srecRecStart
" +----------+
" | type | 1 srecRecType, (srecRecTypeUnknown)
" +----------+
" | count | 2 srecByteCount
" +----------+
" | address | 4/6/8 srecNoAddress, srecDataAddress, srecRecCount, srecStartAddress, (srecAddressFieldUnknown)
" +----------+
" | data | 0..504/502/500 srecDataOdd, srecDataEven, (srecDataUnexpected)
" +----------+
" | checksum | 2 srecChecksum
" +----------+
"
" 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 srecRecStart "^S"
syn match srecRecTypeUnknown "^S." contains=srecRecStart
syn match srecRecType "^S[0-35-9]" contains=srecRecStart
syn match srecByteCount "^S.[0-9a-fA-F]\{2}" contains=srecRecTypeUnknown nextgroup=srecAddressFieldUnknown,srecChecksum
syn match srecByteCount "^S[0-35-9][0-9a-fA-F]\{2}" contains=srecRecType
syn match srecAddressFieldUnknown "[0-9a-fA-F]\{2}" contained nextgroup=srecAddressFieldUnknown,srecChecksum
syn match srecNoAddress "^S0[0-9a-fA-F]\{6}" contains=srecByteCount nextgroup=srecDataOdd,srecChecksum
syn match srecDataAddress "^S1[0-9a-fA-F]\{6}" contains=srecByteCount nextgroup=srecDataOdd,srecChecksum
syn match srecDataAddress "^S2[0-9a-fA-F]\{8}" contains=srecByteCount nextgroup=srecDataOdd,srecChecksum
syn match srecDataAddress "^S3[0-9a-fA-F]\{10}" contains=srecByteCount nextgroup=srecDataOdd,srecChecksum
syn match srecRecCount "^S5[0-9a-fA-F]\{6}" contains=srecByteCount nextgroup=srecDataUnexpected,srecChecksum
syn match srecRecCount "^S6[0-9a-fA-F]\{8}" contains=srecByteCount nextgroup=srecDataUnexpected,srecChecksum
syn match srecStartAddress "^S7[0-9a-fA-F]\{10}" contains=srecByteCount nextgroup=srecDataUnexpected,srecChecksum
syn match srecStartAddress "^S8[0-9a-fA-F]\{8}" contains=srecByteCount nextgroup=srecDataUnexpected,srecChecksum
syn match srecStartAddress "^S9[0-9a-fA-F]\{6}" contains=srecByteCount nextgroup=srecDataUnexpected,srecChecksum
" alternating highlight per byte for easier reading
syn match srecDataOdd "[0-9a-fA-F]\{2}" contained nextgroup=srecDataEven,srecChecksum
syn match srecDataEven "[0-9a-fA-F]\{2}" contained nextgroup=srecDataOdd,srecChecksum
" data bytes which should not exist
syn match srecDataUnexpected "[0-9a-fA-F]\{2}" contained nextgroup=srecDataUnexpected,srecChecksum
" Data digit pair regex usage also results in only highlighting the checksum
" if the number of data characters is even.
syn match srecChecksum "[0-9a-fA-F]\{2}$" contained
" 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 srecRecStart srecRecType
hi def link srecRecTypeUnknown srecRecType
hi def link srecRecType WarningMsg
hi def link srecByteCount Constant
hi def srecAddressFieldUnknown term=italic cterm=italic gui=italic
hi def link srecNoAddress DiffAdd
hi def link srecDataAddress Comment
hi def link srecRecCount srecNoAddress
hi def link srecStartAddress srecDataAddress
hi def srecDataOdd term=bold cterm=bold gui=bold
hi def srecDataEven term=NONE cterm=NONE gui=NONE
hi def link srecDataUnexpected Error
hi def link srecChecksum DiffChange
let b:current_syntax = "srec"
" vim: ts=8
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