slang::syntax::SyntaxRewriter class

A helper class that assists in rewriting syntax trees – useful for automated refactoring tools.

Base classes

template<typename TDerived> struct SyntaxVisitor<TDerived>: Use this type as a base class for syntax tree visitors.

std::shared_ptr<SyntaxTree> transform(const std::shared_ptr<SyntaxTree>& tree, const SourceLibrary* library = nullptr): Transforms the given syntax tree using the rewriter.

SyntaxNode& parse(std::string_view text): A helper for derived classes that parses some text into syntax nodes.
void remove(const SyntaxNode& oldNode): Register a removal for the given syntax node from the tree.
void replace(const SyntaxNode& oldNode, SyntaxNode& newNode): Replace the given oldNode with newNode in the rewritten tree.
void insertBefore(const SyntaxNode& oldNode, SyntaxNode& newNode): Insert newNode before oldNode in the rewritten tree.
void insertAfter(const SyntaxNode& oldNode, SyntaxNode& newNode): Insert newNode after oldNode in the rewritten tree.
void insertAtFront(const SyntaxListBase& list, SyntaxNode& newNode, Token separator = {}): Insert newNode at the front of list in the rewritten tree.
void insertAtBack(const SyntaxListBase& list, SyntaxNode& newNode, Token separator = {}): Insert newNode at the back of list in the rewritten tree.

Transforms the given syntax tree using the rewriter.

Returns	if no changes are requested, returns the original syntax tree. Otherwise, the changes are applied and the newly rewritten syntax tree is returned.

The tree will be visited in order and each node will be given a chance to be rewritten (by providing visit() implementations in the derived class).