" Vim syntax file
" Language:     ChoiceScript
" Maintainer:   Tracy Canfield
" Adds additional ChoiceScript reserved words to the syntax
" file created by Ben Hamill

if exists("b:current_syntax")
    finish
endif

unlet! b:current_syntax

syn match choicescriptComments '\*comment .*$'

syn match choicescriptOption '#'

syn match choicescriptChoice '\*choice'
syn match choicescriptChoice '\*fake_choice'
syn match choicescriptChoice '\*disable_reuse'
syn match choicescriptChoice '\*allow_reuse'
syn match choicescriptChoice '\*hide_reuse'
syn match choicescriptChoice '\*selectable_if'

syn match choicescriptConditional '\*if'
syn match choicescriptConditional '\*else'
syn match choicescriptConditional '\*elseif'

syn match choicescriptCommands '\*set'
syn match choicescriptCommands '\*temp'
syn match choicescriptCommands '\*rand'
syn match choicescriptCommands '\*page_break'
syn match choicescriptCommands '\*line_break'
syn match choicescriptCommands '\*stat_chart'
syn match choicescriptCommands '\*finish'
syn match choicescriptCommands '\*ending'
syn match choicescriptCommands '\*achieve'
syn match choicescriptCommands '\*achievement'
syn match choicescriptCommands '\*check_achievements'
syn match choicescriptCommands '\*image'
syn match choicescriptCommands '\*input_text'
syn match choicescriptCommands '\*input_number'

syn match choicescriptSetup '\*title'
syn match choicescriptSetup '\*author'
syn match choicescriptSetup '\*create'
syn match choicescriptSetup '\*scene_list'

syn match choicescriptLabels '\*goto'
syn match choicescriptLabels '\*goto_scene'
syn match choicescriptLabels '\*goto_random_scene'
syn match choicescriptLabels '\*label'
syn match choicescriptLabels '\*gosub'
syn match choicescriptLabels '\*gosub_scene'
syn match choicescriptLabels '\*return'
syn match choicescriptLabels '\*gotoref'
syn match choicescriptLabels '\*setref'

syn match choicescriptError '\*bug'

syn keyword choicescriptBoolean true
syn keyword choicescriptBoolean false

syn region choicescriptInterpolation start="\$!\{,2}{" skip="\\}" end="}"
syn region choicescriptBold matchgroup=choicescriptOption start="\[b\]" end="\[/b\]" contains=choicescriptBoldItalic,choicescriptInterpolation
syn region choicescriptItalic matchgroup=choicescriptOption start="\[i\]" end="\[/i\]" contains=choicescriptItalicBold,choicescriptInterpolation
syn region choicescriptItalicBold matchgroup=choicescriptOption start="\[b\]" end="\[/b\]" contains=choicescriptInterpolation contained
syn region choicescriptBoldItalic matchgroup=choicescriptOption start="\[i\]" end="\[/i\]" contains=choicescriptInterpolation contained

hi def link choicescriptComments        Comment
hi def link choicescriptCommands        Identifier
hi def link choicescriptLabels          Constant
hi def link choicescriptOption          String
hi def link choicescriptChoice          Conditional
hi def link choicescriptConditional     Conditional
hi def link choicescriptError           Exception
hi def link choicescriptInterpolation   Statement
hi def link choicescriptSetup           PreProc
hi def link choicescriptBoolean         Boolean

hi link choicescriptBoldItalic choicescriptItalicBold

hi def choicescriptItalic               term=italic cterm=italic gui=italic
hi def choicescriptBold                 term=bold cterm=bold gui=bold
hi def choicescriptItalicBold           term=italic,bold cterm=italic,bold gui=italic,bold

let b:current_syntax = "choicescript"