" Vim syntax file
" Language:	CSC258 Assembler (ax)
" Maintainer:	David Wolever <wolever@cs.toronto.edu>
" Last Change:	Nov. 6, 2007

syntax clear

syn case ignore

" Everything that isn't a command, data or comment is an error!
syn match asmError "[^ \t]" contains=asmCommand,asmData,asmComment

" The list of valid keywords, which can be followed by a constant or label
syn keyword asmCommand LDA STA ADD SUB MUL DIV MOD FLA FLS FLM FLD CIF CFI AND IOR XOR BUN BZE BSA BIN INP OUT nextgroup=asmConst,asmLabel
syn match asmLabel " .\{-}\>" nextgroup=asmInlineComment contained
syn match asmConst " C[0-9]\+" nextgroup=asmInlineComment contained
syn match asmInlineComment " .*" contained
syn match asmComment	"#.*"

syn match asmNumber     "I[ \t]\+-\?[0-9]\+"hs=s+1
syn match asmNumber     "W[ \t]\+[0-9]\+"hs=s+1
syn match asmNumber     "F[ \t]\+-\?[0-9]\+\(\.[0-9]\+\)\?\(e[0-9]\+\)\?"hs=s+1
syn match asmNumber     "B[ \t]\+[0-1]\{,32}"hs=s+1
syn match asmNumber     "H[ \t]\+[0-9A-F]\{,8}"hs=s+1
syn match asmNumber     "C[ \t]*'.\{,4}'"hs=s+1
syn match asmNumber     "A[ \t]\+[a-zA-Z_-]\+"hs=s+1
syn match asmData       "[AIWFBH][ \t]\+.\{-}" contains=asmNumber,asmError nextgroup=asmInlineComment
syn match asmData       "C[ \t]*'.\{-}'" contains=asmNumber,asmError nextgroup=asmInlineComment

syn match asmLabelDef	"[a-z_][a-z0-9_]*:"he=e-1

syn case match

hi def link asmLabelDef	Identifier
hi def link asmLabel    Identifier
hi def link asmComment	Comment
hi def link asmInlineComment	Comment
hi def link asmCommand  Statement
hi def link asmData     Statement
hi def link asmNumber	Number
hi def link asmConst    Number
hi def link asmError    Error
let b:current_syntax = "ax"

" vim: ts=8