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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| import 'package:analyzer/dart/ast/ast.dart'; | ||
| import 'package:analyzer/dart/ast/token.dart'; | ||
|
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||
| /// A representation of an namespace directive. | ||
| /// | ||
| /// Capable of tracking comments that should be associated with an namespace | ||
| /// during organization (which cannot be represented by the AST) | ||
| class Namespace { | ||
| /// The AST node that represents an namespace in a file. | ||
| final NamespaceDirective directive; | ||
|
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| /// Comments that appear before the namespace that should stay with the | ||
| /// namespace when organized. | ||
| List<Token> beforeComments = []; | ||
|
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| /// Comments that appear after the namespace that should stay with the | ||
| /// namespace when organized. | ||
| List<Token> afterComments = []; | ||
|
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| /// The file being imported/exported. | ||
| String get target { | ||
| return directive.uri.stringValue; | ||
| } | ||
|
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| /// If the namespace is a dart namespace. Memoized for performance. | ||
| bool _isDart; | ||
| bool get isDart { | ||
| return _isDart ??= target.startsWith('dart:'); | ||
| } | ||
|
|
||
| /// If the namespace is an external package namespace. Memoized for performance. | ||
| bool _isExternalPkg; | ||
| bool get isExternalPkg { | ||
| return _isExternalPkg ??= target.startsWith('package:'); | ||
| } | ||
|
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| /// If the namespace is a relative namespace. Memoized for performance. | ||
| bool _isRelative; | ||
| bool get isRelative { | ||
| return _isRelative ??= !isExternalPkg && !isDart; | ||
| } | ||
|
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| Namespace(this.directive); | ||
|
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| /// The character offset of the start of the namespace statement in source text. | ||
| /// Excludes comments associated with this namespace. | ||
| int get statementStart => directive.beginToken.charOffset; | ||
|
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| /// The character offset of the end of the namespace statement in source text. | ||
| /// Excludes comments associated with this namespace. | ||
| int get statementEnd => directive.endToken.end; | ||
|
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| /// The character offset of the end of this namespace in source text. | ||
| /// Includes comments associated with this namespace. | ||
| int end() { | ||
| var end = directive.endToken.end; | ||
| for (final afterComment in afterComments) { | ||
| if (afterComment.end > end) { | ||
| end = afterComment.end; | ||
| } | ||
| } | ||
| return end; | ||
| } | ||
|
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| /// The character offset of the start of this namespace in source text. | ||
| /// Includes comments associated with this namespace. | ||
| int start() { | ||
| var charOffset = directive.beginToken.charOffset; | ||
| for (final beforeComment in beforeComments) { | ||
| if (beforeComment.charOffset < charOffset) { | ||
| charOffset = beforeComment.charOffset; | ||
| } | ||
| } | ||
| return charOffset; | ||
| } | ||
| } |
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