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" Protocol Buffers - Google's data interchange format
" Copyright 2008 Google Inc.
"
" Licensed under the Apache License, Version 2.0 (the "License");
" you may not use this file except in compliance with the License.
" You may obtain a copy of the License at
"
"      http:"www.apache.org/licenses/LICENSE-2.0
"
" Unless required by applicable law or agreed to in writing, software
" distributed under the License is distributed on an "AS IS" BASIS,
" WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
" See the License for the specific language governing permissions and
" limitations under the License.

" This is the Vim syntax file for Google Protocol Buffers.
"
" Usage:
"
" 1. cp proto.vim ~/.vim/syntax/
" 2. Add the following to ~/.vimrc:
"
" augroup filetype
"   au! BufRead,BufNewFile *.proto setfiletype proto
" augroup end
"
" Or just create a new file called ~/.vim/ftdetect/proto.vim with the
" previous lines on it.

if version < 600
  syntax clear
elseif exists("b:current_syntax")
  finish
endif

syn case match

syn keyword pbTodo       contained TODO FIXME XXX
syn cluster pbCommentGrp contains=pbTodo

syn keyword pbSyntax     syntax import option
syn keyword pbStructure  package message group
syn keyword pbRepeat     optional required repeated
syn keyword pbDefault    default
syn keyword pbExtend     extend extensions to max
syn keyword pbRPC        service rpc returns

syn keyword pbType      int32 int64 uint32 uint64 sint32 sint64
syn keyword pbType      fixed32 fixed64 sfixed32 sfixed64
syn keyword pbType      float double bool string bytes
syn keyword pbTypedef   enum
syn keyword pbBool      true false

syn match   pbInt     /-\?\<\d\+\>/
syn match   pbInt     /\<0[xX]\x+\>/
syn match   pbFloat   /\<-\?\d*\(\.\d*\)\?/
" TODO: .proto also supports C-style block comments;
" see /usr/share/vim/vim70/syntax/c.vim for how it's done.
syn region  pbComment start="//" skip="\\$" end="$" keepend contains=@pbCommentGrp
syn region  pbString  start=/"/ skip=/\\"/ end=/"/
syn region  pbString  start=/'/ skip=/\\'/ end=/'/

if version >= 508 || !exists("did_proto_syn_inits")
  if version < 508
    let did_proto_syn_inits = 1
    command -nargs=+ HiLink hi link <args>
  else
    command -nargs=+ HiLink hi def link <args>
  endif

  HiLink pbTodo         Todo

  HiLink pbSyntax       Include
  HiLink pbStructure    Structure
  HiLink pbRepeat       Repeat
  HiLink pbDefault      Keyword
  HiLink pbExtend       Keyword
  HiLink pbRPC          Keyword
  HiLink pbType         Type
  HiLink pbTypedef      Typedef
  HiLink pbBool         Boolean

  HiLink pbInt          Number
  HiLink pbFloat        Float
  HiLink pbComment      Comment
  HiLink pbString       String

  delcommand HiLink
endif

let b:current_syntax = "proto"