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JSSpecCompiler: Allow storing NullableTrees in nodes

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And use this in ElseIfBranch node.
This commit is contained in:
Dan Klishch 2023-08-18 16:23:29 -04:00 • committed by Andrew Kaster
parent 4eede5282c
commit 092ed1cc8a
7 changed files with 56 additions and 18 deletions
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13
Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Compiler/GenericASTPass.cpp
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@ -10,13 +10,24 @@
namespace JSSpecCompiler {
void RecursiveASTVisitor::run_in_const_subtree(NullableTree nullable_tree)
{
if (nullable_tree) {
auto tree = nullable_tree.release_nonnull();
auto tree_copy = tree;
NodeSubtreePointer pointer { &tree };
recurse(tree, pointer);
VERIFY(tree == tree_copy);
}
}
void RecursiveASTVisitor::run_in_subtree(Tree& tree)
{
NodeSubtreePointer pointer { &tree };
recurse(tree, pointer);
}
void RecursiveASTVisitor::replace_current_node_with(Tree tree)
void RecursiveASTVisitor::replace_current_node_with(NullableTree tree)
{
m_current_subtree_pointer->replace_subtree({}, move(tree));
}

3
Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Compiler/GenericASTPass.h
View file

@ -17,13 +17,14 @@ class RecursiveASTVisitor {
public:
virtual ~RecursiveASTVisitor() = default;
void run_in_const_subtree(NullableTree tree);
void run_in_subtree(Tree& tree);
protected:
virtual RecursionDecision on_entry(Tree) { return RecursionDecision::Recurse; }
virtual void on_leave(Tree) { }
void replace_current_node_with(Tree tree);
void replace_current_node_with(NullableTree tree);
private:
RecursionDecision recurse(Tree root, NodeSubtreePointer& pointer);