Cpp.UnionSpecifier Class

Namespace: Cpp
Superclasses: AstNodeProperties

Represents the union_specifier nodes in the syntax tree of your code

Since R2026a

Description

UnionSpecifier class represents the C++ syntax node union_specifier in your code and contains predicates to query properties and children of this node.

Predicates

Type

Type	Raisable	Printable
UnionSpecifier	Yes	No

Syntaxes

This class defines these predicates that act on the objects of this class. In addition, objects of this class can access the predicates defined by the base class AstNodeProperties. An object of this class is an object of AstNodeProperties class.

Predicates	Description
is(required UnionSpecifier &u)	Finds syntax nodes of the type UnionSpecifier in your C++ code and returns them as u. A UnionSpecifier represents a union declaration or definition.
isa(Cpp.Node.Node node)	Checks if node is a UnionSpecifier. Use this relation if you want to negate the condition (for example: not Cpp.UnionSpecifier.isa(n)).
cast(Cpp.Node.Node node, required UnionSpecifier &cast)	Finds syntax nodes of the type UnionSpecifier from the nodes in node. Retrieval occurs if node is compatible with the UnionSpecifier type. Use this relation if you need further UnionSpecifier properties.
name(UnionSpecifier self, Cpp.Node.Node &child)	Matches the name of the union. For example, in union MyUnion { int x; }, this predicate matches MyUnion.
body(UnionSpecifier self, Cpp.Node.Node &child)	Matches the body of the union definition. For example, in union MyUnion { int x; float y; }, this predicate matches the compound block { int x; float y; }.
baseClassClause(UnionSpecifier self, Cpp.Node.Node &child)	Matches the base class clause of a union, when present. For example, in union MyUnion : public Base { }, this predicate matches : public Base.
msDeclspecModifier(UnionSpecifier self, Cpp.Node.Node &child)	Matches a Microsoft-specific __declspec modifier applied to the union. For example, in union __declspec(align(16)) MyUnion { }, this predicate matches __declspec(align(16)).
virtualSpecifier(UnionSpecifier self, Cpp.Node.Node &child)	Matches a virtual specifier applied to the union. For example, in union MyUnion final { }, this predicate matches final.
alignasQualifier(UnionSpecifier self, Cpp.Node.Node &child)	Matches an alignas qualifier applied to the union. For example, in union alignas(16) MyUnion { }, this predicate matches alignas(16).
attributeDeclaration(UnionSpecifier self, Cpp.Node.Node &child)	Matches an attribute declaration applied to the union. For example, in union [[deprecated]] MyUnion { }, this predicate matches [[deprecated]].
attributeSpecifier(UnionSpecifier self, Cpp.Node.Node &child)	Matches an attribute specifier applied to the union. For example, in union [[nodiscard]] MyUnion { }, this predicate matches [[nodiscard]].
isEnclosedInUnionSpecifier(Cpp.Node.Node child)	Checks if child appears inside a UnionSpecifier.
getEnclosingUnionSpecifier(Cpp.Node.Node child, required UnionSpecifier &parent)	Finds the nearest enclosing UnionSpecifier ancestor of child and returns it as parent.

Version History

Introduced in R2026a