OLD | NEW |
1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 // Check the validity of string literals. | 5 // Check the validity of string literals. |
6 | 6 |
7 library stringvalidator; | 7 library stringvalidator; |
8 | 8 |
9 import "dart2jslib.dart"; | 9 import "dart2jslib.dart"; |
10 import "tree/tree.dart"; | 10 import "tree/tree.dart"; |
(...skipping 31 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
42 token.charOffset + leftQuote, | 42 token.charOffset + leftQuote, |
43 content, | 43 content, |
44 quoting); | 44 quoting); |
45 } | 45 } |
46 | 46 |
47 static StringQuoting quotingFromString(SourceString sourceString) { | 47 static StringQuoting quotingFromString(SourceString sourceString) { |
48 Iterator<int> source = sourceString.iterator(); | 48 Iterator<int> source = sourceString.iterator(); |
49 bool raw = false; | 49 bool raw = false; |
50 int quoteLength = 1; | 50 int quoteLength = 1; |
51 int quoteChar = source.next(); | 51 int quoteChar = source.next(); |
52 if (quoteChar === $r) { | 52 if (identical(quoteChar, $r)) { |
53 raw = true; | 53 raw = true; |
54 quoteChar = source.next(); | 54 quoteChar = source.next(); |
55 } | 55 } |
56 assert(quoteChar == $SQ || quoteChar == $DQ); | 56 assert(quoteChar == $SQ || quoteChar == $DQ); |
57 // String has at least one quote. Check it if has three. | 57 // String has at least one quote. Check it if has three. |
58 // If it only have two, the string must be an empty string literal, | 58 // If it only have two, the string must be an empty string literal, |
59 // and end after the second quote. | 59 // and end after the second quote. |
60 bool multiline = false; | 60 bool multiline = false; |
61 if (source.hasNext && source.next() == quoteChar && source.hasNext) { | 61 if (source.hasNext && source.next() == quoteChar && source.hasNext) { |
62 int code = source.next(); | 62 int code = source.next(); |
(...skipping 115 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
178 } | 178 } |
179 } | 179 } |
180 // String literal successfully validated. | 180 // String literal successfully validated. |
181 if (quoting.raw || !containsEscape) { | 181 if (quoting.raw || !containsEscape) { |
182 // A string without escapes could just as well have been raw. | 182 // A string without escapes could just as well have been raw. |
183 return new DartString.rawString(string, length); | 183 return new DartString.rawString(string, length); |
184 } | 184 } |
185 return new DartString.escapedString(string, length); | 185 return new DartString.escapedString(string, length); |
186 } | 186 } |
187 } | 187 } |
OLD | NEW |