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| 1 // Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 library immic.grammar; | |
| 6 | |
| 7 import 'package:petitparser/petitparser.dart'; | |
| 8 | |
| 9 class ImmiGrammarDefinition extends GrammarDefinition { | |
| 10 Parser token(String input) { | |
| 11 Parser parser = input.length == 1 ? char(input) : string(input); | |
| 12 return parser.token().trim(ref(HIDDEN)); | |
| 13 } | |
| 14 | |
| 15 | |
| 16 // ----------------------------------------------------------------- | |
| 17 // Keyword definitions. | |
| 18 // ----------------------------------------------------------------- | |
| 19 LIST() => ref(token, 'List'); | |
| 20 | |
| 21 STRUCT() => ref(token, 'node'); | |
| 22 | |
| 23 UNION() => ref(token, 'union'); | |
| 24 | |
| 25 IMPORT() => ref(token, 'import'); | |
| 26 | |
| 27 // ----------------------------------------------------------------- | |
| 28 // Grammar productions. | |
| 29 // ----------------------------------------------------------------- | |
| 30 start() => ref(unit).end(); | |
| 31 | |
| 32 unit() => ref(import).star() & ref(struct).star(); | |
| 33 | |
| 34 import() => ref(IMPORT) | |
| 35 & ((ref(token, '"') | |
| 36 & ref(token, '"').neg().star() | |
| 37 & ref(token, '"')) | |
| 38 | | |
| 39 (ref(token, "'") | |
| 40 & ref(token, "'").neg().star() | |
| 41 & ref(token, "'"))) | |
| 42 & ref(token, ';'); | |
| 43 | |
| 44 struct() => ref(STRUCT) | |
| 45 & ref(identifier) | |
| 46 & ref(token, '{') | |
| 47 & (ref(slot) | ref(union) | ref(method)).star() | |
| 48 & ref(token, '}'); | |
| 49 | |
| 50 slot() => ref(formal) | |
| 51 & ref(token, ';'); | |
| 52 | |
| 53 union() => ref(UNION) | |
| 54 & ref(token, '{') | |
| 55 & ref(slot).star() | |
| 56 & ref(token, '}'); | |
| 57 | |
| 58 method() => ref(type) | |
| 59 & ref(identifier) | |
| 60 & ref(token, '(') | |
| 61 & ref(formals).optional(const []) | |
| 62 & ref(token, ')') | |
| 63 & ref(token, ';'); | |
| 64 | |
| 65 formals() => ref(formal) | |
| 66 .separatedBy(ref(token, ','), includeSeparators: false); | |
| 67 | |
| 68 formal() => ref(type) | |
| 69 & ref(identifier); | |
| 70 | |
| 71 type() => ref(listType) | |
| 72 | ref(stringType) | |
| 73 | ref(nodeType) | |
| 74 | ref(simpleType); | |
| 75 | |
| 76 stringType() => ref(token, 'String'); | |
| 77 nodeType() => ref(token, 'Node'); | |
| 78 | |
| 79 simpleType() => ref(identifier) | |
| 80 & ref(token, '*').optional(null).map((e) => e != null); | |
| 81 | |
| 82 listType() => ref(LIST) | |
| 83 & ref(token, '<') | |
| 84 & ref(listMemberType) | |
| 85 & ref(token, '>'); | |
| 86 | |
| 87 listMemberType() => ref(nodeType) | |
| 88 | ref(simpleType); | |
| 89 | |
| 90 identifier() => ref(IDENTIFIER).trim(ref(HIDDEN)); | |
| 91 | |
| 92 | |
| 93 // ----------------------------------------------------------------- | |
| 94 // Lexical tokens. | |
| 95 // ----------------------------------------------------------------- | |
| 96 IDENTIFIER() => ref(IDENTIFIER_START) | |
| 97 & ref(IDENTIFIER_PART).star(); | |
| 98 | |
| 99 IDENTIFIER_START() => ref(IDENTIFIER_START_NO_DOLLAR) | |
| 100 | char('\$'); | |
| 101 | |
| 102 IDENTIFIER_START_NO_DOLLAR() => ref(LETTER) | |
| 103 | char('_'); | |
| 104 | |
| 105 IDENTIFIER_PART_NO_DOLLAR() => ref(IDENTIFIER_START_NO_DOLLAR) | |
| 106 | ref(DIGIT); | |
| 107 | |
| 108 IDENTIFIER_PART() => ref(IDENTIFIER_START) | |
| 109 | ref(DIGIT); | |
| 110 | |
| 111 LETTER() => letter(); | |
| 112 | |
| 113 DIGIT() => digit(); | |
| 114 | |
| 115 | |
| 116 // ----------------------------------------------------------------- | |
| 117 // Whitespace and comments. | |
| 118 // ----------------------------------------------------------------- | |
| 119 HIDDEN() => ref(WHITESPACE_OR_COMMENT).plus(); | |
| 120 | |
| 121 WHITESPACE_OR_COMMENT() => ref(WHITESPACE) | |
| 122 | ref(SINGLE_LINE_COMMENT) | |
| 123 | ref(MULTI_LINE_COMMENT) | |
| 124 ; | |
| 125 | |
| 126 WHITESPACE() => whitespace(); | |
| 127 NEWLINE() => pattern('\n\r'); | |
| 128 | |
| 129 SINGLE_LINE_COMMENT() => string('//') | |
| 130 & ref(NEWLINE).neg().star() | |
| 131 & ref(NEWLINE).optional() | |
| 132 ; | |
| 133 | |
| 134 MULTI_LINE_COMMENT() => string('/*') | |
| 135 & (ref(MULTI_LINE_COMMENT) | string('*/').neg()).star() & string('*/') | |
| 136 ; | |
| 137 } | |
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Chromium Code Reviews
Issue 2035023003:
Remove service-compiler related code. (Closed)
Base URL: git@github.com:dartino/sdk.git@master