Add vim syntax highlighting for template files

adatmplt.vim

@@ -0,0 +1,78 @@
+" vim syntax file
+" Language: Ada template
+" Maintainer: Jan Tomassi <[email protected]>
+" Last Change: 2024-10-26
+
+" Quit when a (custom) syntax file was already loaded
+"" if exists("b:current_syntax")
+""     finish
+"" endif
+
+" let s:cpo_save = $cpo
+" set cpo&vim
+
+syn case match
+syn sync fromstart
+set foldmethod=syntax
+set conceallevel=1
+
+syn match atTag         "@_.\{-}_@" contained
+" =, /=, >, >=, <, <=, and, or, xor, in, not, &
+syn match atConditionOP   "\(=\|/=\|>\|>=\|<\|<=\|and\|or\|xor\|in\|not\|&\)" contained
+
+
+syn match  atIfH    "\(@@IF@@\s\+\)\@<=.*$"    contains=atConditionOP,atTag contained 
+syn match  atElsifH "\(@@ELSIF@@\s\+\)\@<=.*$" contains=atConditionOP,atTag contained 
+syn match  atElseE  "\(@@ELSE@@\)\@<=.*$"      contains=NONE
+
+syn region atIf    transparent matchgroup=atCond start="\s*@@IF@@"    end="\s*@@END_IF@@"   fold contains=ALLBUT,atConditionOP,atElsifH,atElseE,@InlineHilight,@SetHilight,@ExtendHilight
+syn region atElse  transparent matchgroup=atCond start="\s*@@ELSE@@"  end="\s*@@END_IF@@"me=e-10 contains=ALLBUT,atConditionOP,atElse,atElsif,atIfH,atElsifH,@InlineHilight,@SetHilight,@ExtendHilight
+syn region atElsif transparent matchgroup=atCond start="\s*@@ELSIF@@" end="\s*@@END_IF@@"me=e-10 end="\s*@@ELSIF@@"me=e-9 end="\s*@@ELSE@@"me=e-8 contains=ALLBUT,atConditionOP,atIfH,atElseE,@InlineHilight,@SetHilight,@ExtendHilight
+
+syn region atInline matchgroup=atStmt start="\s*@@INLINE@@" start="\s*@@INLINE\(\(([^()\\]*\%(\\.[^()\\]*\)*)\)\{1}\|\(([^()\\]*\%(\\.[^()\\]*\)*)\)\{3}\)@@" end="\s*@@END_INLINE@@" fold contains=ALLBUT,atConditionOP,@IfHilight,@SetHilight,@ExtendHilight
+syn match  atInlineE "\s*@@INLINE\%(([^()\\]*\%(\\.[^()\\]*\)*)\)\{2}@@"
+
+syn region atTable matchgroup=atStmt start=/\s*@@TABLE\('\(REVERSE\|TERMINATE_SECTIONS\|TERSE\|ALIGN_ON(\%(\%("[^"\\]*\%(\\.[^"\\]*\)*",\s*\)*\%("[^"\\]*\%(\\.[^"\\]*\)*"\)\))\)\)*@@/ end="\s*@@END_TABLE@@" fold contained contains=ALLBUT,atConditionOP,@IfHilight,@InlineHilight,@SetHilight,@ExtendHilight
+syn match  atTableE1 /\(@@TABLE\('\(REVERSE\|TERMINATE_SECTIONS\|TERSE\|ALIGN_ON(\%(\%("[^"\\]*\%(\\.[^"\\]*\)*",\s*\)*\%("[^"\\]*\%(\\.[^"\\]*\)*"\)\))\)\)*@@\)\@<=.\+/
+syn match  atTableE2 /\(@@END_TABLE@@\)\@<=.\+/
+
+syn region atMacro matchgroup=atStmt start=/\s*@@MACRO(.\{-})@@/ end=/\s*@@END_MACRO@@/ fold contains=ALLBUT,atConditionOP,@IfHilight,@InlineHilight,@SetHilight,@ExtendHilight
+syn match  atMacroE1 /\(@@MACRO(.\{-})@@\)\@<=.+/
+syn match  atMacroE1 /\(@@END_MACRO@@\)\@<=.+/
+
+syn region atInclude matchgroup=atStmt start="\s*@@INCLUDE@@" end="$" contains=atTag,atComment
+
+syn region atSet matchgroup=atStmt start="@@SET@@" end="$" contains=atSetH1
+syn match  atSetH1 /\(@@SET@@\s\+\)\@<=\w*/ contained nextgroup=atSetH2 
+syn match  atSetH2 /\s=/ contained nextgroup=atSetH3 
+syn match  atSetH3 /.*/  contained 
+
+syn region atExtend matchgroup=atStmt start="@@EXTENDS@@"      end="@@END_EXTENDS@@" fold contains=ALLBUT,atConditionOP,@IfHilight,@InlineHilight,@SetHilight
+syn region atBlock  matchgroup=atStmt start="@@BLOCK(.\{-})@@" end="@@END_BLOCK@@"   fold contains=ALLBUT,atConditionOP,@IfHilight,@InlineHilight,@SetHilight
+
+syn region atComment start="@@--" end="$" 
+syn match  atCommentEmpty "@@--\s*$" conceal
+
+syn cluster IfHilight     add=atIfH,atElsifH,atElseE
+syn cluster InlineHilight add=atInlineE
+syn cluster SetHilight    add=atSetH1,atSetH2,atSetH3
+syn cluster ExtendHilight add=atSetH1,atSetH2,atSetH3
+
+hi def link atComment     Comment
+hi def link atStmt        Statement
+hi def link atCond        Conditional
+
+hi def link atTag         Identifier
+hi def link atSetH1       Identifier
+
+hi def link atConditionOP Operator
+hi def link atSetH2       Operator
+
+hi def link atSetH3       String
+
+hi def link atElseE       Error
+hi def link atInlineE     Error
+hi def link atTableE1     Error
+hi def link atTableE2     Error
+hi def link atMacroE1     Error
+hi def link atMacroE1     Error