Get type pointer

Author: jakebailey

internal/ast/node_unsafe.go

@@ -4,6 +4,7 @@ package ast
 
 import (
 	"sync/atomic"
+	"unsafe"
 
 	"github.com/microsoft/typescript-go/internal/core"
 )
@@ -13,22 +14,30 @@ import (
 // interface valued properties either store a true nil or a reference to a non-nil struct.
 
 type Node struct {
-	Kind   Kind
-	Flags  NodeFlags
-	Loc    core.TextRange
-	id     atomic.Uint32
-	Parent *Node
-	_data  nodeData
+	Kind     Kind
+	Flags    NodeFlags
+	Loc      core.TextRange
+	id       atomic.Uint32
+	Parent   *Node
+	dataType unsafe.Pointer
+}
+
+type interfaceValue struct {
+	typ   unsafe.Pointer
+	value unsafe.Pointer
 }
 
 func (n *Node) data() nodeData {
-	return n._data
+	var data nodeData
+	(*interfaceValue)(unsafe.Pointer(&data)).typ = n.dataType
+	(*interfaceValue)(unsafe.Pointer(&data)).value = unsafe.Pointer(n)
+	return data
 }
 
 func newNode(kind Kind, data nodeData) *Node {
 	n := data.AsNode()
 	n.Loc = core.UndefinedTextRange()
 	n.Kind = kind
-	n._data = data
+	n.dataType = (*interfaceValue)(unsafe.Pointer(&data)).typ
 	return n
 }