A pattern that contains an ExprSyntaxProtocol.
struct ExpressionPatternSyntaxPatterns can be used in switch cases like the following example:
switch raw.kind {
case .expressionPattern:
return true
default:
return false
}expression: ExprSyntax
import SwiftSyntaxA library for working with Swift code.
protocol ExprSyntaxProtocol : SyntaxProtocolProtocol to which all ExprSyntax nodes conform.
struct ExprSyntaxstruct PatternSyntaxprotocol PatternSyntaxProtocol : SyntaxProtocolProtocol to which all PatternSyntax nodes conform.
struct MissingPatternSyntaxIn case the source code is missing a pattern, this node stands in place of the missing pattern.
struct IdentifierPatternSyntaxA pattern that contains a TokenSyntax.
struct IsTypePatternSyntaxstruct TuplePatternSyntaxA pattern that contains a list of other pattern.
struct ValueBindingPatternSyntaxstruct WildcardPatternSyntaxA pattern that represent a wildcard.
protocol CustomDebugStringConvertibleA type with a customized textual representation suitable for debugging purposes.
protocol CustomReflectableA type that explicitly supplies its own mirror.
protocol CustomStringConvertibleA type with a customized textual representation.
protocol EquatableA type that can be compared for value equality.
protocol Hashable : EquatableA type that can be hashed into a Hasher to produce an integer hash value.
protocol Sendableprotocol SyntaxHashable : HashableProtocol that provides a common Hashable implementation for all syntax nodes
protocol SyntaxProtocol : CustomDebugStringConvertible, CustomReflectable, CustomStringConvertible, Sendable, TextOutputStreamableProvide common functionality for specialized syntax nodes. Extend this protocol to provide common functionality for all syntax nodes.
protocol TextOutputStreamableA source of text-streaming operations.
protocol _LeafPatternSyntaxNodeProtocol : PatternSyntaxProtocolProtocol that syntax nodes conform to if they don’t have any semantic subtypes. These are syntax nodes that are not considered base nodes for other syntax types.
init?(_ node: some SyntaxProtocol) init(leadingTrivia: Trivia? = nil, _ unexpectedBeforeExpression: UnexpectedNodesSyntax? = nil, expression: some ExprSyntaxProtocol, _ unexpectedAfterExpression: UnexpectedNodesSyntax? = nil, trailingTrivia: Trivia? = nil) static let structure: SyntaxNodeStructurelet _syntaxNode: Syntaxvar expression: ExprSyntax { get set }var unexpectedAfterExpression: UnexpectedNodesSyntax? { get set }var unexpectedBeforeExpression: UnexpectedNodesSyntax? { get set }init?<S>(_ node: S?) where S : SyntaxProtocol Initializes a new instance of the conforming type from a given specialized syntax node.
var customMirror: Mirror { get }var debugDescription: String { get }A simple description of this node (ie. its type).
var description: String { get }A source-accurate description of this node.
var detached: Self { get }Return this subtree with this node as the root, ie. detach this node from its parent.
var endPosition: AbsolutePosition { get }The end position of this node, including its trivia.
var endPositionBeforeTrailingTrivia: AbsolutePosition { get }The end position of this node’s content, before any trailing trivia.
var hasError: Bool { get }Whether the tree contained by this layout has any
var hasMaximumNestingLevelOverflow: Bool { get }var hasParent: Bool { get }Whether or not this node has a parent.
var hasSequenceExpr: Bool { get }Whether this tree contains a missing token or unexpected node.
var hasWarning: Bool { get }Whether the tree contained by this layout has any tokens with a TokenDiagnostic of severity warning.
var id: SyntaxIdentifier { get }Returns a value representing the unique identity of the node.
var keyPathInParent: AnyKeyPath? { get }var kind: SyntaxKind { get }The kind of the syntax node, e.g. if it is a functionDecl.
var leadingTrivia: Trivia { get set }The leading trivia of this syntax node.
var leadingTriviaLength: SourceLength { get }The length this node’s leading trivia takes up spelled out in source.
var parent: Syntax? { get }The parent of this syntax node, or nil if this node is the root.
var position: AbsolutePosition { get }The absolute position of the starting point of this node. If the first token is with leading trivia, the position points to the start of the leading trivia.
var positionAfterSkippingLeadingTrivia: AbsolutePosition { get }The absolute position of the starting point of this node, skipping any leading trivia attached to the first token syntax.
var raw: RawSyntax { get }var root: Syntax { get }The root of the tree in which this node resides.
var syntaxNodeType: SyntaxProtocol.Type { get }The dynamic metatype of the concrete node.
var syntaxTextBytes: [UInt8] { get }Retrieve the syntax text as an array of bytes that models the input source even in the presence of invalid UTF-8.
var totalByteRange: ByteSourceRange { get }The byte source range of this node including leading and trailing trivia.
var totalLength: SourceLength { get }The length of this node including all of its trivia.
var trailingTrivia: Trivia { get set }The trailing trivia of this syntax node.
var trailingTriviaLength: SourceLength { get }The length this node’s trailing trivia takes up spelled out in source.
var trimmed: Self { get }A copy of this node without the leading trivia of the first token in the node and the trailing trivia of the last token in the node.
var trimmedByteRange: ByteSourceRange { get }The byte source range of this node excluding leading and trailing trivia.
var trimmedDescription: String { get }The description of this node with leading whitespace of the first token and trailing whitespace of the last token removed.
var trimmedLength: SourceLength { get }The length this node takes up spelled out in the source, excluding its leading or trailing trivia.
static func != (lhs: Self, rhs: Self) -> Bool Returns a Boolean value indicating whether two values are not equal.
static func == (lhs: Self, rhs: Self) -> Bool func asProtocol(_: MissingNodeSyntax.Protocol) -> MissingNodeSyntax? Return the non-type erased version of this syntax node if it conforms to MissingNodeSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: ParenthesizedSyntax.Protocol) -> ParenthesizedSyntax? Return the non-type erased version of this syntax node if it conforms to ParenthesizedSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: WithCodeBlockSyntax.Protocol) -> WithCodeBlockSyntax? Return the non-type erased version of this syntax node if it conforms to WithCodeBlockSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: WithModifiersSyntax.Protocol) -> WithModifiersSyntax? Return the non-type erased version of this syntax node if it conforms to WithModifiersSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: WithAttributesSyntax.Protocol) -> WithAttributesSyntax? Return the non-type erased version of this syntax node if it conforms to WithAttributesSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: WithStatementsSyntax.Protocol) -> WithStatementsSyntax? Return the non-type erased version of this syntax node if it conforms to WithStatementsSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: EffectSpecifiersSyntax.Protocol) -> EffectSpecifiersSyntax? Return the non-type erased version of this syntax node if it conforms to EffectSpecifiersSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: WithTrailingCommaSyntax.Protocol) -> WithTrailingCommaSyntax? Return the non-type erased version of this syntax node if it conforms to WithTrailingCommaSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: WithGenericParametersSyntax.Protocol) -> WithGenericParametersSyntax? Return the non-type erased version of this syntax node if it conforms to WithGenericParametersSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: WithOptionalCodeBlockSyntax.Protocol) -> WithOptionalCodeBlockSyntax? Return the non-type erased version of this syntax node if it conforms to WithOptionalCodeBlockSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: FreestandingMacroExpansionSyntax.Protocol) -> FreestandingMacroExpansionSyntax? Return the non-type erased version of this syntax node if it conforms to FreestandingMacroExpansionSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: BracedSyntax.Protocol) -> BracedSyntax? Return the non-type erased version of this syntax node if it conforms to BracedSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: DeclGroupSyntax.Protocol) -> DeclGroupSyntax? Return the non-type erased version of this syntax node if it conforms to DeclGroupSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func asProtocol(_: NamedDeclSyntax.Protocol) -> NamedDeclSyntax? Return the non-type erased version of this syntax node if it conforms to NamedDeclSyntax. Otherwise return nil. Note that this will incur an existential conversion.
func children(viewMode: SyntaxTreeViewMode) -> SyntaxChildren A sequence over the children of this node.
func debugDescription(includeTrivia: Bool = false, converter: SourceLocationConverter? = nil, mark: SyntaxProtocol? = nil, indentString: String = "") -> String Returns a summarized dump of this node.
func endLocation(converter: SourceLocationConverter, afterTrailingTrivia: Bool = false) -> SourceLocation The ending location, in the provided file, of this Syntax node.
func firstToken(viewMode: SyntaxTreeViewMode) -> TokenSyntax? Returns the first token node that is part of this syntax node.
func hash(into hasher: inout Hasher) func isProtocol(_: MissingNodeSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to MissingNodeSyntax. Note that this will incur an existential conversion.
func isProtocol(_: ParenthesizedSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to ParenthesizedSyntax. Note that this will incur an existential conversion.
func isProtocol(_: WithCodeBlockSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to WithCodeBlockSyntax. Note that this will incur an existential conversion.
func isProtocol(_: WithModifiersSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to WithModifiersSyntax. Note that this will incur an existential conversion.
func isProtocol(_: WithAttributesSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to WithAttributesSyntax. Note that this will incur an existential conversion.
func isProtocol(_: WithStatementsSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to WithStatementsSyntax. Note that this will incur an existential conversion.
func isProtocol(_: EffectSpecifiersSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to EffectSpecifiersSyntax. Note that this will incur an existential conversion.
func isProtocol(_: WithTrailingCommaSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to WithTrailingCommaSyntax. Note that this will incur an existential conversion.
func isProtocol(_: WithGenericParametersSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to WithGenericParametersSyntax. Note that this will incur an existential conversion.
func isProtocol(_: WithOptionalCodeBlockSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to WithOptionalCodeBlockSyntax. Note that this will incur an existential conversion.
func isProtocol(_: FreestandingMacroExpansionSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to FreestandingMacroExpansionSyntax. Note that this will incur an existential conversion.
func isProtocol(_: BracedSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to BracedSyntax. Note that this will incur an existential conversion.
func isProtocol(_: DeclGroupSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to DeclGroupSyntax. Note that this will incur an existential conversion.
func isProtocol(_: NamedDeclSyntax.Protocol) -> Bool Check whether the non-type erased version of this syntax node conforms to NamedDeclSyntax. Note that this will incur an existential conversion.
func lastToken(viewMode: SyntaxTreeViewMode) -> TokenSyntax? Returns the last token node that is part of this syntax node.
func nextToken(viewMode: SyntaxTreeViewMode) -> TokenSyntax? Recursively walks through the tree to find the next token semantically after this node.
func node(at syntaxIdentifier: SyntaxIdentifier) -> Syntax? If the node with the given syntaxIdentifier is a (recursive) child of this node, return the node with that identifier.
func previousToken(viewMode: SyntaxTreeViewMode) -> TokenSyntax? Recursively walks through the tree to find the token semantically before this node.
func sourceRange(converter: SourceLocationConverter, afterLeadingTrivia: Bool = true, afterTrailingTrivia: Bool = false) -> SourceRange The source range, in the provided file, of this Syntax node.
func startLocation(converter: SourceLocationConverter, afterLeadingTrivia: Bool = true) -> SourceLocation The starting location, in the provided file, of this Syntax node.
func token(at position: AbsolutePosition) -> TokenSyntax? Find the syntax token at the given absolute position within this syntax node or any of its children.
func tokens(viewMode: SyntaxTreeViewMode) -> TokenSequence Sequence of tokens that are part of this Syntax node.
func trimmed(matching filter: (TriviaPiece) -> Bool) -> Self A copy of this node with pieces that match matching trimmed from the leading trivia of the first token and trailing trivia of the last token.
func trimmedDescription(matching filter: (TriviaPiece) -> Bool) -> String The description of this node with pieces that match matching removed from the leading trivia of the first token and trailing trivia of the last token.
func with<T>(_ keyPath: WritableKeyPath<Self, T>, _ value: T) -> Self Returns a new syntax node that has the child at keyPath replaced by value.
func write<Target>(to target: inout Target) where Target : TextOutputStream Prints the raw value of this node to the provided stream.
var byteRange: ByteSourceRange { get }var byteSize: Int { get }The textual byte length of this node including leading and trailing trivia.
var byteSizeAfterTrimmingTrivia: Int { get }The textual byte length of this node excluding leading and trailing trivia.
var contentLength: SourceLength { get }var firstToken: TokenSyntax? { get }var index: SyntaxChildrenIndex { get }The index of this node in a SyntaxChildren collection.
var isImplicit: Bool { get }When isImplicit is true, the syntax node doesn’t include any underlying tokens, e.g. an empty CodeBlockItemList.
var lastToken: TokenSyntax? { get }var nextToken: TokenSyntax? { get }var previousToken: TokenSyntax? { get }func `as`(_ syntaxType: PatternSyntax.Type) -> PatternSyntax? Attempts to upcast the current syntax node to its base node type (PatternSyntax).
func cast(_ syntaxType: PatternSyntax.Type) -> PatternSyntax Force-upcast the current syntax node to its base node type (PatternSyntax).
func detach() -> Self func `is`(_ syntaxType: PatternSyntax.Type) -> Bool Checks if the current syntax node can be upcast to its base node type (PatternSyntax).