xref: /vim-8.2.3635/runtime/syntax/prolog.vim (revision f37506f6)
1" Vim syntax file
2" Language:    PROLOG
3" Maintainers: Thomas Koehler <[email protected]>
4" Last Change: 2013 May 23
5" URL:         http://gott-gehabt.de/800_wer_wir_sind/thomas/Homepage/Computer/vim/syntax/prolog.vim
6
7" There are two sets of highlighting in here:
8" If the "prolog_highlighting_clean" variable exists, it is rather sparse.
9" Otherwise you get more highlighting.
10
11" quit when a syntax file was already loaded
12if exists("b:current_syntax")
13  finish
14endif
15
16" Prolog is case sensitive.
17syn case match
18
19" Very simple highlighting for comments, clause heads and
20" character codes.  It respects prolog strings and atoms.
21
22syn region   prologCComment start=+/\*+ end=+\*/+
23syn match    prologComment  +%.*+
24
25syn keyword  prologKeyword  module meta_predicate multifile dynamic
26syn match    prologCharCode +0'\\\=.+
27syn region   prologString   start=+"+ skip=+\\\\\|\\"+ end=+"+
28syn region   prologAtom     start=+'+ skip=+\\\\\|\\'+ end=+'+
29syn region   prologClause   matchgroup=prologClauseHead start=+^\s*[a-z]\w*+ matchgroup=Normal end=+\.\s\|\.$+ contains=ALLBUT,prologClause
30
31if !exists("prolog_highlighting_clean")
32
33  " some keywords
34  " some common predicates are also highlighted as keywords
35  " is there a better solution?
36  syn keyword prologKeyword   abolish current_output  peek_code
37  syn keyword prologKeyword   append  current_predicate       put_byte
38  syn keyword prologKeyword   arg     current_prolog_flag     put_char
39  syn keyword prologKeyword   asserta fail    put_code
40  syn keyword prologKeyword   assertz findall read
41  syn keyword prologKeyword   at_end_of_stream        float   read_term
42  syn keyword prologKeyword   atom    flush_output    repeat
43  syn keyword prologKeyword   atom_chars      functor retract
44  syn keyword prologKeyword   atom_codes      get_byte        set_input
45  syn keyword prologKeyword   atom_concat     get_char        set_output
46  syn keyword prologKeyword   atom_length     get_code        set_prolog_flag
47  syn keyword prologKeyword   atomic  halt    set_stream_position
48  syn keyword prologKeyword   bagof   integer setof
49  syn keyword prologKeyword   call    is      stream_property
50  syn keyword prologKeyword   catch   nl      sub_atom
51  syn keyword prologKeyword   char_code       nonvar  throw
52  syn keyword prologKeyword   char_conversion number  true
53  syn keyword prologKeyword   clause  number_chars    unify_with_occurs_check
54  syn keyword prologKeyword   close   number_codes    var
55  syn keyword prologKeyword   compound        once    write
56  syn keyword prologKeyword   copy_term       op      write_canonical
57  syn keyword prologKeyword   current_char_conversion open    write_term
58  syn keyword prologKeyword   current_input   peek_byte       writeq
59  syn keyword prologKeyword   current_op      peek_char
60
61  syn match   prologOperator "=\\=\|=:=\|\\==\|=<\|==\|>=\|\\=\|\\+\|<\|>\|="
62  syn match   prologAsIs     "===\|\\===\|<=\|=>"
63
64  syn match   prologNumber            "\<[0123456789]*\>'\@!"
65  syn match   prologCommentError      "\*/"
66  syn match   prologSpecialCharacter  ";"
67  syn match   prologSpecialCharacter  "!"
68  syn match   prologSpecialCharacter  ":-"
69  syn match   prologSpecialCharacter  "-->"
70  syn match   prologQuestion          "?-.*\."  contains=prologNumber
71
72
73endif
74
75syn sync maxlines=50
76
77
78" Define the default highlighting.
79" Only when an item doesn't have highlighting yet
80
81" The default highlighting.
82hi def link prologComment          Comment
83hi def link prologCComment         Comment
84hi def link prologCharCode         Special
85
86if exists ("prolog_highlighting_clean")
87
88hi def link prologKeyword        Statement
89hi def link prologClauseHead     Statement
90hi def link prologClause Normal
91
92else
93
94hi def link prologKeyword        Keyword
95hi def link prologClauseHead     Constant
96hi def link prologClause Normal
97hi def link prologQuestion       PreProc
98hi def link prologSpecialCharacter Special
99hi def link prologNumber         Number
100hi def link prologAsIs           Normal
101hi def link prologCommentError   Error
102hi def link prologAtom           String
103hi def link prologString         String
104hi def link prologOperator       Operator
105
106endif
107
108
109let b:current_syntax = "prolog"
110
111" vim: ts=8
112