1 // Copyright (c) 2017 Ernest Micklei 2 // 3 // MIT License 4 // 5 // Permission is hereby granted, free of charge, to any person obtaining 6 // a copy of this software and associated documentation files (the 7 // "Software"), to deal in the Software without restriction, including 8 // without limitation the rights to use, copy, modify, merge, publish, 9 // distribute, sublicense, and/or sell copies of the Software, and to 10 // permit persons to whom the Software is furnished to do so, subject to 11 // the following conditions: 12 // 13 // The above copyright notice and this permission notice shall be 14 // included in all copies or substantial portions of the Software. 15 // 16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 23 24 package proto 25 26 import ( 27 "text/scanner" 28 ) 29 30 // Syntax should have value "proto" 31 type Syntax struct { 32 Position scanner.Position 33 Comment *Comment 34 Value string 35 InlineComment *Comment 36 Parent Visitee 37 } 38 39 func (s *Syntax) parse(p *Parser) error { 40 if _, tok, lit := p.next(); tok != tEQUALS { 41 return p.unexpected(lit, "syntax =", s) 42 } 43 _, _, lit := p.next() 44 if !isString(lit) { 45 return p.unexpected(lit, "syntax string constant", s) 46 } 47 s.Value, _ = unQuote(lit) 48 return nil 49 } 50 51 // Accept dispatches the call to the visitor. 52 func (s *Syntax) Accept(v Visitor) { 53 v.VisitSyntax(s) 54 } 55 56 // Doc is part of Documented 57 func (s *Syntax) Doc() *Comment { 58 return s.Comment 59 } 60 61 // inlineComment is part of commentInliner. 62 func (s *Syntax) inlineComment(c *Comment) { 63 s.InlineComment = c 64 } 65 66 func (s *Syntax) parent(v Visitee) { s.Parent = v } 67