Initial AST structure for record literals
Change-Id: I225365b90d2e006116b3a91307479839df07ec10
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/255140
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Commit-Queue: Brian Wilkerson <brianwilkerson@google.com>
Reviewed-by: Samuel Rawlins <srawlins@google.com>
diff --git a/pkg/analyzer/lib/dart/ast/ast.dart b/pkg/analyzer/lib/dart/ast/ast.dart
index e4f6a79..5038cbd 100644
--- a/pkg/analyzer/lib/dart/ast/ast.dart
+++ b/pkg/analyzer/lib/dart/ast/ast.dart
@@ -4063,6 +4063,25 @@
Expression? get target;
}
+/// A record literal.
+///
+/// recordLiteral ::= '(' recordField (',' recordField)* ','? ')'
+///
+/// recordField ::= (identifier ':')? [Expression]
+///
+/// Clients may not extend, implement or mix-in this class.
+@experimental
+abstract class RecordLiteral implements Literal {
+ /// Return the syntactic elements used to compute the fields of the record.
+ NodeList<Expression> get fields;
+
+ /// Return the left parenthesis.
+ Token get leftParenthesis;
+
+ /// Return the right parenthesis.
+ Token get rightParenthesis;
+}
+
/// A record type.
///
/// recordType ::=
diff --git a/pkg/analyzer/lib/src/dart/ast/ast.dart b/pkg/analyzer/lib/src/dart/ast/ast.dart
index 36e3ba0..1345044 100644
--- a/pkg/analyzer/lib/src/dart/ast/ast.dart
+++ b/pkg/analyzer/lib/src/dart/ast/ast.dart
@@ -9644,6 +9644,60 @@
identical(descendant, _target);
}
+class RecordLiteralImpl extends LiteralImpl implements RecordLiteral {
+ @override
+ Token leftParenthesis;
+
+ /// The syntactic elements used to compute the fields of the record.
+ final NodeListImpl<Expression> _fields = NodeListImpl._();
+
+ @override
+ Token rightParenthesis;
+
+ /// Initialize a newly created record literal.
+ RecordLiteralImpl(
+ {required this.leftParenthesis,
+ required List<Expression> fields,
+ required this.rightParenthesis}) {
+ _fields._initialize(this, fields);
+ }
+
+ @override
+ Token get beginToken => leftParenthesis;
+
+ @override
+ Token get endToken => rightParenthesis;
+
+ @override
+ NodeList<Expression> get fields => _fields;
+
+ @override
+ // TODO(paulberry): add commas.
+ ChildEntities get _childEntities => super._childEntities
+ ..addToken('leftParenthesis', leftParenthesis)
+ ..addNodeList('fields', fields)
+ ..addToken('rightParenthesis', rightParenthesis);
+
+ @override
+ E? accept<E>(AstVisitor<E> visitor) {
+ // TODO: implement accept
+ throw UnimplementedError();
+ // visitor.visitRecordLiteral(this);
+ }
+
+ @override
+ void resolveExpression(ResolverVisitor resolver, DartType? contextType) {
+ // TODO: implement resolveExpression
+ throw UnimplementedError();
+ // resolver.visitRecordLiteral(this, contextType: contextType);
+ }
+
+ @override
+ void visitChildren(AstVisitor visitor) {
+ _fields.accept(visitor);
+ }
+}
+
/// The invocation of a constructor in the same class from within a
/// constructor's initialization list.
///
