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85
pkg/analysis_server/lib/src/services/completion/dart/identifier_helper.dart
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| // Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file | ||
| // for details. All rights reserved. Use of this source code is governed by a | ||
| // BSD-style license that can be found in the LICENSE file. | ||
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| import 'package:analysis_server/src/services/completion/dart/candidate_suggestion.dart'; | ||
| import 'package:analysis_server/src/services/completion/dart/completion_state.dart'; | ||
| import 'package:analysis_server/src/services/completion/dart/suggestion_collector.dart'; | ||
| import 'package:analysis_server/src/services/correction/name_suggestion.dart'; | ||
| import 'package:analysis_server/src/utilities/extensions/string.dart'; | ||
| import 'package:analyzer/dart/ast/ast.dart'; | ||
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| /// A helper class that produces candidate suggestions for identifiers when the | ||
| /// completion location is in a declaration site. | ||
| class IdentifierHelper { | ||
| /// The state used to compute the candidate suggestions. | ||
| final CompletionState state; | ||
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| /// The suggestion collector to which suggestions will be added. | ||
| final SuggestionCollector collector; | ||
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| /// Whether private version of names should be included. | ||
| final bool includePrivateIdentifiers; | ||
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| /// Initialize a newly created helper to add suggestions to the [collector]. | ||
| IdentifierHelper( | ||
| {required this.state, | ||
| required this.collector, | ||
| required this.includePrivateIdentifiers}); | ||
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| /// Adds any suggestions for the name of the [parameter]. | ||
| void addParameterName(FormalParameter parameter) { | ||
| if (parameter is DefaultFormalParameter) { | ||
| parameter = parameter.parameter; | ||
| } | ||
| if (parameter is SimpleFormalParameter) { | ||
| addVariable(parameter.type); | ||
| } | ||
| } | ||
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| /// Adds suggestions based on the [typeName]. | ||
| void addSuggestionsFromTypeName(String typeName) { | ||
| var variableNameSuggestions = getCamelWordCombinations(typeName); | ||
| variableNameSuggestions.remove(typeName); | ||
| for (var varName in variableNameSuggestions) { | ||
| _createNameSuggestion(varName); | ||
| if (includePrivateIdentifiers) { | ||
| _createNameSuggestion('_$varName'); | ||
| } | ||
| } | ||
| } | ||
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| /// Adds any suggestions for the name of a top-level declaration (class, enum, | ||
| /// mixin, function, etc.). | ||
| void addTopLevelName() { | ||
| var context = state.request.analysisSession.resourceProvider.pathContext; | ||
| var path = state.request.path; | ||
| var candidateName = context.basenameWithoutExtension(path).toUpperCamelCase; | ||
| if (candidateName == null) { | ||
| return; | ||
| } | ||
| for (var unit in state.libraryElement.units) { | ||
| for (var childElement in unit.children) { | ||
| if (childElement.name == candidateName) { | ||
| // Don't suggest a name that's already declared in the library. | ||
| return; | ||
| } | ||
| } | ||
| } | ||
| collector.addSuggestion(IdentifierSuggestion(identifier: candidateName)); | ||
| } | ||
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| /// Adds any suggestions for a variable with the given [type]. | ||
| void addVariable(TypeAnnotation? type) { | ||
| if (type is NamedType) { | ||
| addSuggestionsFromTypeName(type.name2.lexeme); | ||
| } | ||
| } | ||
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| /// Adds a suggestion for the [name] (unless the name is `null` or empty). | ||
| void _createNameSuggestion(String name) { | ||
| if (name.isNotEmpty) { | ||
| collector.addSuggestion(IdentifierSuggestion(identifier: name)); | ||
| } | ||
| } | ||
| } |
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