langtools/src/share/classes/com/sun/tools/javac/tree/TreeCopier.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package com.sun.tools.javac.tree;

 import com.sun.source.tree.*;
 import com.sun.tools.javac.tree.JCTree.*;
 import com.sun.tools.javac.util.List;
 import com.sun.tools.javac.util.ListBuffer;

 /**
  * Creates a copy of a tree, using a given TreeMaker.
  * Names, literal values, etc are shared with the original.
  *
  *  <p><b>This is NOT part of any supported API.
  *  If you write code that depends on this, you do so at your own risk.
  *  This code and its internal interfaces are subject to change or
  *  deletion without notice.</b>
  */
 public class TreeCopier<P> implements TreeVisitor<JCTree,P> {
     private TreeMaker M;

     /** Creates a new instance of TreeCopier */
     public TreeCopier(TreeMaker M) {
         this.M = M;
     }

     public <T extends JCTree> T copy(T tree) {
         return copy(tree, null);
     }

     @SuppressWarnings("unchecked")
     public <T extends JCTree> T copy(T tree, P p) {
         if (tree == null)
             return null;
         return (T) (tree.accept(this, p));
     }

     public <T extends JCTree> List<T> copy(List<T> trees) {
         return copy(trees, null);
     }

     public <T extends JCTree> List<T> copy(List<T> trees, P p) {
         if (trees == null)
             return null;
         ListBuffer<T> lb = new ListBuffer<T>();
         for (T tree: trees)
             lb.append(copy(tree, p));
         return lb.toList();
     }

     public JCTree visitAnnotatedType(AnnotatedTypeTree node, P p) {
         JCAnnotatedType t = (JCAnnotatedType) node;
         List<JCAnnotation> annotations = copy(t.annotations, p);
         JCExpression underlyingType = copy(t.underlyingType, p);
         return M.at(t.pos).AnnotatedType(annotations, underlyingType);
     }

     public JCTree visitAnnotation(AnnotationTree node, P p) {
         JCAnnotation t = (JCAnnotation) node;
         JCTree annotationType = copy(t.annotationType, p);
         List<JCExpression> args = copy(t.args, p);
         if (t.getKind() == Tree.Kind.TYPE_ANNOTATION) {
             JCAnnotation newTA = M.at(t.pos).TypeAnnotation(annotationType, args);
             newTA.attribute = t.attribute;
             return newTA;
         } else {
             JCAnnotation newT = M.at(t.pos).Annotation(annotationType, args);
             newT.attribute = t.attribute;
             return newT;
         }
     }

     public JCTree visitAssert(AssertTree node, P p) {
         JCAssert t = (JCAssert) node;
         JCExpression cond = copy(t.cond, p);
         JCExpression detail = copy(t.detail, p);
         return M.at(t.pos).Assert(cond, detail);
     }

     public JCTree visitAssignment(AssignmentTree node, P p) {
         JCAssign t = (JCAssign) node;
         JCExpression lhs = copy(t.lhs, p);
         JCExpression rhs = copy(t.rhs, p);
         return M.at(t.pos).Assign(lhs, rhs);
     }

     public JCTree visitCompoundAssignment(CompoundAssignmentTree node, P p) {
         JCAssignOp t = (JCAssignOp) node;
         JCTree lhs = copy(t.lhs, p);
         JCTree rhs = copy(t.rhs, p);
         return M.at(t.pos).Assignop(t.getTag(), lhs, rhs);
     }

     public JCTree visitBinary(BinaryTree node, P p) {
         JCBinary t = (JCBinary) node;
         JCExpression lhs = copy(t.lhs, p);
         JCExpression rhs = copy(t.rhs, p);
         return M.at(t.pos).Binary(t.getTag(), lhs, rhs);
     }

     public JCTree visitBlock(BlockTree node, P p) {
         JCBlock t = (JCBlock) node;
         List<JCStatement> stats = copy(t.stats, p);
         return M.at(t.pos).Block(t.flags, stats);
     }

     public JCTree visitBreak(BreakTree node, P p) {
         JCBreak t = (JCBreak) node;
         return M.at(t.pos).Break(t.label);
     }

     public JCTree visitCase(CaseTree node, P p) {
         JCCase t = (JCCase) node;
         JCExpression pat = copy(t.pat, p);
         List<JCStatement> stats = copy(t.stats, p);
         return M.at(t.pos).Case(pat, stats);
     }

     public JCTree visitCatch(CatchTree node, P p) {
         JCCatch t = (JCCatch) node;
         JCVariableDecl param = copy(t.param, p);
         JCBlock body = copy(t.body, p);
         return M.at(t.pos).Catch(param, body);
     }

     public JCTree visitClass(ClassTree node, P p) {
         JCClassDecl t = (JCClassDecl) node;
         JCModifiers mods = copy(t.mods, p);
         List<JCTypeParameter> typarams = copy(t.typarams, p);
         JCExpression extending = copy(t.extending, p);
         List<JCExpression> implementing = copy(t.implementing, p);
         List<JCTree> defs = copy(t.defs, p);
         return M.at(t.pos).ClassDef(mods, t.name, typarams, extending, implementing, defs);
     }

     public JCTree visitConditionalExpression(ConditionalExpressionTree node, P p) {
         JCConditional t = (JCConditional) node;
         JCExpression cond = copy(t.cond, p);
         JCExpression truepart = copy(t.truepart, p);
         JCExpression falsepart = copy(t.falsepart, p);
         return M.at(t.pos).Conditional(cond, truepart, falsepart);
     }

     public JCTree visitContinue(ContinueTree node, P p) {
         JCContinue t = (JCContinue) node;
         return M.at(t.pos).Continue(t.label);
     }

     public JCTree visitDoWhileLoop(DoWhileLoopTree node, P p) {
         JCDoWhileLoop t = (JCDoWhileLoop) node;
         JCStatement body = copy(t.body, p);
         JCExpression cond = copy(t.cond, p);
         return M.at(t.pos).DoLoop(body, cond);
     }

     public JCTree visitErroneous(ErroneousTree node, P p) {
         JCErroneous t = (JCErroneous) node;
         List<? extends JCTree> errs = copy(t.errs, p);
         return M.at(t.pos).Erroneous(errs);
     }

     public JCTree visitExpressionStatement(ExpressionStatementTree node, P p) {
         JCExpressionStatement t = (JCExpressionStatement) node;
         JCExpression expr = copy(t.expr, p);
         return M.at(t.pos).Exec(expr);
     }

     public JCTree visitEnhancedForLoop(EnhancedForLoopTree node, P p) {
         JCEnhancedForLoop t = (JCEnhancedForLoop) node;
         JCVariableDecl var = copy(t.var, p);
         JCExpression expr = copy(t.expr, p);
         JCStatement body = copy(t.body, p);
         return M.at(t.pos).ForeachLoop(var, expr, body);
     }

     public JCTree visitForLoop(ForLoopTree node, P p) {
         JCForLoop t = (JCForLoop) node;
         List<JCStatement> init = copy(t.init, p);
         JCExpression cond = copy(t.cond, p);
         List<JCExpressionStatement> step = copy(t.step, p);
         JCStatement body = copy(t.body, p);
         return M.at(t.pos).ForLoop(init, cond, step, body);
     }

     public JCTree visitIdentifier(IdentifierTree node, P p) {
         JCIdent t = (JCIdent) node;
         return M.at(t.pos).Ident(t.name);
     }

     public JCTree visitIf(IfTree node, P p) {
         JCIf t = (JCIf) node;
         JCExpression cond = copy(t.cond, p);
         JCStatement thenpart = copy(t.thenpart, p);
         JCStatement elsepart = copy(t.elsepart, p);
         return M.at(t.pos).If(cond, thenpart, elsepart);
     }

     public JCTree visitImport(ImportTree node, P p) {
         JCImport t = (JCImport) node;
         JCTree qualid = copy(t.qualid, p);
         return M.at(t.pos).Import(qualid, t.staticImport);
     }

     public JCTree visitArrayAccess(ArrayAccessTree node, P p) {
         JCArrayAccess t = (JCArrayAccess) node;
         JCExpression indexed = copy(t.indexed, p);
         JCExpression index = copy(t.index, p);
         return M.at(t.pos).Indexed(indexed, index);
     }

     public JCTree visitLabeledStatement(LabeledStatementTree node, P p) {
         JCLabeledStatement t = (JCLabeledStatement) node;
         JCStatement body = copy(t.body, p);
         return M.at(t.pos).Labelled(t.label, body);
     }

     public JCTree visitLiteral(LiteralTree node, P p) {
         JCLiteral t = (JCLiteral) node;
         return M.at(t.pos).Literal(t.typetag, t.value);
     }

     public JCTree visitMethod(MethodTree node, P p) {
         JCMethodDecl t  = (JCMethodDecl) node;
         JCModifiers mods = copy(t.mods, p);
         JCExpression restype = copy(t.restype, p);
         List<JCTypeParameter> typarams = copy(t.typarams, p);
         List<JCVariableDecl> params = copy(t.params, p);
         JCVariableDecl recvparam = copy(t.recvparam, p);
         List<JCExpression> thrown = copy(t.thrown, p);
         JCBlock body = copy(t.body, p);
         JCExpression defaultValue = copy(t.defaultValue, p);
         return M.at(t.pos).MethodDef(mods, t.name, restype, typarams, recvparam, params, thrown, body, defaultValue);
     }

     public JCTree visitMethodInvocation(MethodInvocationTree node, P p) {
         JCMethodInvocation t = (JCMethodInvocation) node;
         List<JCExpression> typeargs = copy(t.typeargs, p);
         JCExpression meth = copy(t.meth, p);
         List<JCExpression> args = copy(t.args, p);
         return M.at(t.pos).Apply(typeargs, meth, args);
     }

     public JCTree visitModifiers(ModifiersTree node, P p) {
         JCModifiers t = (JCModifiers) node;
         List<JCAnnotation> annotations = copy(t.annotations, p);
         return M.at(t.pos).Modifiers(t.flags, annotations);
     }

     public JCTree visitNewArray(NewArrayTree node, P p) {
         JCNewArray t = (JCNewArray) node;
         JCExpression elemtype = copy(t.elemtype, p);
         List<JCExpression> dims = copy(t.dims, p);
         List<JCExpression> elems = copy(t.elems, p);
         return M.at(t.pos).NewArray(elemtype, dims, elems);
     }

     public JCTree visitNewClass(NewClassTree node, P p) {
         JCNewClass t = (JCNewClass) node;
         JCExpression encl = copy(t.encl, p);
         List<JCExpression> typeargs = copy(t.typeargs, p);
         JCExpression clazz = copy(t.clazz, p);
         List<JCExpression> args = copy(t.args, p);
         JCClassDecl def = copy(t.def, p);
         return M.at(t.pos).NewClass(encl, typeargs, clazz, args, def);
     }

     public JCTree visitLambdaExpression(LambdaExpressionTree node, P p) {
         JCLambda t = (JCLambda) node;
         List<JCVariableDecl> params = copy(t.params, p);
         JCTree body = copy(t.body, p);
         return M.at(t.pos).Lambda(params, body);
     }

     public JCTree visitParenthesized(ParenthesizedTree node, P p) {
         JCParens t = (JCParens) node;
         JCExpression expr = copy(t.expr, p);
         return M.at(t.pos).Parens(expr);
     }

     public JCTree visitReturn(ReturnTree node, P p) {
         JCReturn t = (JCReturn) node;
         JCExpression expr = copy(t.expr, p);
         return M.at(t.pos).Return(expr);
     }

     public JCTree visitMemberSelect(MemberSelectTree node, P p) {
         JCFieldAccess t = (JCFieldAccess) node;
         JCExpression selected = copy(t.selected, p);
         return M.at(t.pos).Select(selected, t.name);
     }

     public JCTree visitMemberReference(MemberReferenceTree node, P p) {
         JCMemberReference t = (JCMemberReference) node;
         JCExpression expr = copy(t.expr, p);
         List<JCExpression> typeargs = copy(t.typeargs, p);
         return M.at(t.pos).Reference(t.mode, t.name, expr, typeargs);
     }

     public JCTree visitEmptyStatement(EmptyStatementTree node, P p) {
         JCSkip t = (JCSkip) node;
         return M.at(t.pos).Skip();
     }

     public JCTree visitSwitch(SwitchTree node, P p) {
         JCSwitch t = (JCSwitch) node;
         JCExpression selector = copy(t.selector, p);
         List<JCCase> cases = copy(t.cases, p);
         return M.at(t.pos).Switch(selector, cases);
     }

     public JCTree visitSynchronized(SynchronizedTree node, P p) {
         JCSynchronized t = (JCSynchronized) node;
         JCExpression lock = copy(t.lock, p);
         JCBlock body = copy(t.body, p);
         return M.at(t.pos).Synchronized(lock, body);
     }

     public JCTree visitThrow(ThrowTree node, P p) {
         JCThrow t = (JCThrow) node;
         JCExpression expr = copy(t.expr, p);
         return M.at(t.pos).Throw(expr);
     }

     public JCTree visitCompilationUnit(CompilationUnitTree node, P p) {
         JCCompilationUnit t = (JCCompilationUnit) node;
         List<JCAnnotation> packageAnnotations = copy(t.packageAnnotations, p);
         JCExpression pid = copy(t.pid, p);
         List<JCTree> defs = copy(t.defs, p);
         return M.at(t.pos).TopLevel(packageAnnotations, pid, defs);
     }

     public JCTree visitTry(TryTree node, P p) {
         JCTry t = (JCTry) node;
         List<JCTree> resources = copy(t.resources, p);
         JCBlock body = copy(t.body, p);
         List<JCCatch> catchers = copy(t.catchers, p);
         JCBlock finalizer = copy(t.finalizer, p);
         return M.at(t.pos).Try(resources, body, catchers, finalizer);
     }

     public JCTree visitParameterizedType(ParameterizedTypeTree node, P p) {
         JCTypeApply t = (JCTypeApply) node;
         JCExpression clazz = copy(t.clazz, p);
         List<JCExpression> arguments = copy(t.arguments, p);
         return M.at(t.pos).TypeApply(clazz, arguments);
     }

     public JCTree visitUnionType(UnionTypeTree node, P p) {
         JCTypeUnion t = (JCTypeUnion) node;
         List<JCExpression> components = copy(t.alternatives, p);
         return M.at(t.pos).TypeUnion(components);
     }

     public JCTree visitIntersectionType(IntersectionTypeTree node, P p) {
         JCTypeIntersection t = (JCTypeIntersection) node;
         List<JCExpression> bounds = copy(t.bounds, p);
         return M.at(t.pos).TypeIntersection(bounds);
     }

     public JCTree visitArrayType(ArrayTypeTree node, P p) {
         JCArrayTypeTree t = (JCArrayTypeTree) node;
         JCExpression elemtype = copy(t.elemtype, p);
         return M.at(t.pos).TypeArray(elemtype);
     }

     public JCTree visitTypeCast(TypeCastTree node, P p) {
         JCTypeCast t = (JCTypeCast) node;
         JCTree clazz = copy(t.clazz, p);
         JCExpression expr = copy(t.expr, p);
         return M.at(t.pos).TypeCast(clazz, expr);
     }

     public JCTree visitPrimitiveType(PrimitiveTypeTree node, P p) {
         JCPrimitiveTypeTree t = (JCPrimitiveTypeTree) node;
         return M.at(t.pos).TypeIdent(t.typetag);
     }

     public JCTree visitTypeParameter(TypeParameterTree node, P p) {
         JCTypeParameter t = (JCTypeParameter) node;
         List<JCAnnotation> annos = copy(t.annotations, p);
         List<JCExpression> bounds = copy(t.bounds, p);
         return M.at(t.pos).TypeParameter(t.name, bounds, annos);
     }

     public JCTree visitInstanceOf(InstanceOfTree node, P p) {
         JCInstanceOf t = (JCInstanceOf) node;
         JCExpression expr = copy(t.expr, p);
         JCTree clazz = copy(t.clazz, p);
         return M.at(t.pos).TypeTest(expr, clazz);
     }

     public JCTree visitUnary(UnaryTree node, P p) {
         JCUnary t = (JCUnary) node;
         JCExpression arg = copy(t.arg, p);
         return M.at(t.pos).Unary(t.getTag(), arg);
     }

     public JCTree visitVariable(VariableTree node, P p) {
         JCVariableDecl t = (JCVariableDecl) node;
         JCModifiers mods = copy(t.mods, p);
         JCExpression vartype = copy(t.vartype, p);
         if (t.nameexpr == null) {
             JCExpression init = copy(t.init, p);
             return M.at(t.pos).VarDef(mods, t.name, vartype, init);
         } else {
             JCExpression nameexpr = copy(t.nameexpr, p);
             return M.at(t.pos).ReceiverVarDef(mods, nameexpr, vartype);
         }
     }

     public JCTree visitWhileLoop(WhileLoopTree node, P p) {
         JCWhileLoop t = (JCWhileLoop) node;
         JCStatement body = copy(t.body, p);
         JCExpression cond = copy(t.cond, p);
         return M.at(t.pos).WhileLoop(cond, body);
     }

     public JCTree visitWildcard(WildcardTree node, P p) {
         JCWildcard t = (JCWildcard) node;
         TypeBoundKind kind = M.at(t.kind.pos).TypeBoundKind(t.kind.kind);
         JCTree inner = copy(t.inner, p);
         return M.at(t.pos).Wildcard(kind, inner);
     }

     public JCTree visitOther(Tree node, P p) {
         JCTree tree = (JCTree) node;
         switch (tree.getTag()) {
             case LETEXPR: {
                 LetExpr t = (LetExpr) node;
                 List<JCVariableDecl> defs = copy(t.defs, p);
                 JCTree expr = copy(t.expr, p);
                 return M.at(t.pos).LetExpr(defs, expr);
             }
             default:
                 throw new AssertionError("unknown tree tag: " + tree.getTag());
         }
     }

 }
	/*
	* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package com.sun.tools.javac.tree;

	import com.sun.source.tree.*;
	import com.sun.tools.javac.tree.JCTree.*;
	import com.sun.tools.javac.util.List;
	import com.sun.tools.javac.util.ListBuffer;

	/**
	* Creates a copy of a tree, using a given TreeMaker.
	* Names, literal values, etc are shared with the original.
	*
	* <p><b>This is NOT part of any supported API.
	* If you write code that depends on this, you do so at your own risk.
	* This code and its internal interfaces are subject to change or
	* deletion without notice.</b>
	*/
	public class TreeCopier<P> implements TreeVisitor<JCTree,P> {
	private TreeMaker M;

	/** Creates a new instance of TreeCopier */
	public TreeCopier(TreeMaker M) {
	this.M = M;
	}

	public <T extends JCTree> T copy(T tree) {
	return copy(tree, null);
	}

	@SuppressWarnings("unchecked")
	public <T extends JCTree> T copy(T tree, P p) {
	if (tree == null)
	return null;
	return (T) (tree.accept(this, p));
	}

	public <T extends JCTree> List<T> copy(List<T> trees) {
	return copy(trees, null);
	}

	public <T extends JCTree> List<T> copy(List<T> trees, P p) {
	if (trees == null)
	return null;
	ListBuffer<T> lb = new ListBuffer<T>();
	for (T tree: trees)
	lb.append(copy(tree, p));
	return lb.toList();
	}

	public JCTree visitAnnotatedType(AnnotatedTypeTree node, P p) {
	JCAnnotatedType t = (JCAnnotatedType) node;
	List<JCAnnotation> annotations = copy(t.annotations, p);
	JCExpression underlyingType = copy(t.underlyingType, p);
	return M.at(t.pos).AnnotatedType(annotations, underlyingType);
	}

	public JCTree visitAnnotation(AnnotationTree node, P p) {
	JCAnnotation t = (JCAnnotation) node;
	JCTree annotationType = copy(t.annotationType, p);
	List<JCExpression> args = copy(t.args, p);
	if (t.getKind() == Tree.Kind.TYPE_ANNOTATION) {
	JCAnnotation newTA = M.at(t.pos).TypeAnnotation(annotationType, args);
	newTA.attribute = t.attribute;
	return newTA;
	} else {
	JCAnnotation newT = M.at(t.pos).Annotation(annotationType, args);
	newT.attribute = t.attribute;
	return newT;
	}
	}

	public JCTree visitAssert(AssertTree node, P p) {
	JCAssert t = (JCAssert) node;
	JCExpression cond = copy(t.cond, p);
	JCExpression detail = copy(t.detail, p);
	return M.at(t.pos).Assert(cond, detail);
	}

	public JCTree visitAssignment(AssignmentTree node, P p) {
	JCAssign t = (JCAssign) node;
	JCExpression lhs = copy(t.lhs, p);
	JCExpression rhs = copy(t.rhs, p);
	return M.at(t.pos).Assign(lhs, rhs);
	}

	public JCTree visitCompoundAssignment(CompoundAssignmentTree node, P p) {
	JCAssignOp t = (JCAssignOp) node;
	JCTree lhs = copy(t.lhs, p);
	JCTree rhs = copy(t.rhs, p);
	return M.at(t.pos).Assignop(t.getTag(), lhs, rhs);
	}

	public JCTree visitBinary(BinaryTree node, P p) {
	JCBinary t = (JCBinary) node;
	JCExpression lhs = copy(t.lhs, p);
	JCExpression rhs = copy(t.rhs, p);
	return M.at(t.pos).Binary(t.getTag(), lhs, rhs);
	}

	public JCTree visitBlock(BlockTree node, P p) {
	JCBlock t = (JCBlock) node;
	List<JCStatement> stats = copy(t.stats, p);
	return M.at(t.pos).Block(t.flags, stats);
	}

	public JCTree visitBreak(BreakTree node, P p) {
	JCBreak t = (JCBreak) node;
	return M.at(t.pos).Break(t.label);
	}

	public JCTree visitCase(CaseTree node, P p) {
	JCCase t = (JCCase) node;
	JCExpression pat = copy(t.pat, p);
	List<JCStatement> stats = copy(t.stats, p);
	return M.at(t.pos).Case(pat, stats);
	}

	public JCTree visitCatch(CatchTree node, P p) {
	JCCatch t = (JCCatch) node;
	JCVariableDecl param = copy(t.param, p);
	JCBlock body = copy(t.body, p);
	return M.at(t.pos).Catch(param, body);
	}

	public JCTree visitClass(ClassTree node, P p) {
	JCClassDecl t = (JCClassDecl) node;
	JCModifiers mods = copy(t.mods, p);
	List<JCTypeParameter> typarams = copy(t.typarams, p);
	JCExpression extending = copy(t.extending, p);
	List<JCExpression> implementing = copy(t.implementing, p);
	List<JCTree> defs = copy(t.defs, p);
	return M.at(t.pos).ClassDef(mods, t.name, typarams, extending, implementing, defs);
	}

	public JCTree visitConditionalExpression(ConditionalExpressionTree node, P p) {
	JCConditional t = (JCConditional) node;
	JCExpression cond = copy(t.cond, p);
	JCExpression truepart = copy(t.truepart, p);
	JCExpression falsepart = copy(t.falsepart, p);
	return M.at(t.pos).Conditional(cond, truepart, falsepart);
	}

	public JCTree visitContinue(ContinueTree node, P p) {
	JCContinue t = (JCContinue) node;
	return M.at(t.pos).Continue(t.label);
	}

	public JCTree visitDoWhileLoop(DoWhileLoopTree node, P p) {
	JCDoWhileLoop t = (JCDoWhileLoop) node;
	JCStatement body = copy(t.body, p);
	JCExpression cond = copy(t.cond, p);
	return M.at(t.pos).DoLoop(body, cond);
	}

	public JCTree visitErroneous(ErroneousTree node, P p) {
	JCErroneous t = (JCErroneous) node;
	List<? extends JCTree> errs = copy(t.errs, p);
	return M.at(t.pos).Erroneous(errs);
	}

	public JCTree visitExpressionStatement(ExpressionStatementTree node, P p) {
	JCExpressionStatement t = (JCExpressionStatement) node;
	JCExpression expr = copy(t.expr, p);
	return M.at(t.pos).Exec(expr);
	}

	public JCTree visitEnhancedForLoop(EnhancedForLoopTree node, P p) {
	JCEnhancedForLoop t = (JCEnhancedForLoop) node;
	JCVariableDecl var = copy(t.var, p);
	JCExpression expr = copy(t.expr, p);
	JCStatement body = copy(t.body, p);
	return M.at(t.pos).ForeachLoop(var, expr, body);
	}

	public JCTree visitForLoop(ForLoopTree node, P p) {
	JCForLoop t = (JCForLoop) node;
	List<JCStatement> init = copy(t.init, p);
	JCExpression cond = copy(t.cond, p);
	List<JCExpressionStatement> step = copy(t.step, p);
	JCStatement body = copy(t.body, p);
	return M.at(t.pos).ForLoop(init, cond, step, body);
	}

	public JCTree visitIdentifier(IdentifierTree node, P p) {
	JCIdent t = (JCIdent) node;
	return M.at(t.pos).Ident(t.name);
	}

	public JCTree visitIf(IfTree node, P p) {
	JCIf t = (JCIf) node;
	JCExpression cond = copy(t.cond, p);
	JCStatement thenpart = copy(t.thenpart, p);
	JCStatement elsepart = copy(t.elsepart, p);
	return M.at(t.pos).If(cond, thenpart, elsepart);
	}

	public JCTree visitImport(ImportTree node, P p) {
	JCImport t = (JCImport) node;
	JCTree qualid = copy(t.qualid, p);
	return M.at(t.pos).Import(qualid, t.staticImport);
	}

	public JCTree visitArrayAccess(ArrayAccessTree node, P p) {
	JCArrayAccess t = (JCArrayAccess) node;
	JCExpression indexed = copy(t.indexed, p);
	JCExpression index = copy(t.index, p);
	return M.at(t.pos).Indexed(indexed, index);
	}

	public JCTree visitLabeledStatement(LabeledStatementTree node, P p) {
	JCLabeledStatement t = (JCLabeledStatement) node;
	JCStatement body = copy(t.body, p);
	return M.at(t.pos).Labelled(t.label, body);
	}

	public JCTree visitLiteral(LiteralTree node, P p) {
	JCLiteral t = (JCLiteral) node;
	return M.at(t.pos).Literal(t.typetag, t.value);
	}

	public JCTree visitMethod(MethodTree node, P p) {
	JCMethodDecl t = (JCMethodDecl) node;
	JCModifiers mods = copy(t.mods, p);
	JCExpression restype = copy(t.restype, p);
	List<JCTypeParameter> typarams = copy(t.typarams, p);
	List<JCVariableDecl> params = copy(t.params, p);
	JCVariableDecl recvparam = copy(t.recvparam, p);
	List<JCExpression> thrown = copy(t.thrown, p);
	JCBlock body = copy(t.body, p);
	JCExpression defaultValue = copy(t.defaultValue, p);
	return M.at(t.pos).MethodDef(mods, t.name, restype, typarams, recvparam, params, thrown, body, defaultValue);
	}

	public JCTree visitMethodInvocation(MethodInvocationTree node, P p) {
	JCMethodInvocation t = (JCMethodInvocation) node;
	List<JCExpression> typeargs = copy(t.typeargs, p);
	JCExpression meth = copy(t.meth, p);
	List<JCExpression> args = copy(t.args, p);
	return M.at(t.pos).Apply(typeargs, meth, args);
	}

	public JCTree visitModifiers(ModifiersTree node, P p) {
	JCModifiers t = (JCModifiers) node;
	List<JCAnnotation> annotations = copy(t.annotations, p);
	return M.at(t.pos).Modifiers(t.flags, annotations);
	}

	public JCTree visitNewArray(NewArrayTree node, P p) {
	JCNewArray t = (JCNewArray) node;
	JCExpression elemtype = copy(t.elemtype, p);
	List<JCExpression> dims = copy(t.dims, p);
	List<JCExpression> elems = copy(t.elems, p);
	return M.at(t.pos).NewArray(elemtype, dims, elems);
	}

	public JCTree visitNewClass(NewClassTree node, P p) {
	JCNewClass t = (JCNewClass) node;
	JCExpression encl = copy(t.encl, p);
	List<JCExpression> typeargs = copy(t.typeargs, p);
	JCExpression clazz = copy(t.clazz, p);
	List<JCExpression> args = copy(t.args, p);
	JCClassDecl def = copy(t.def, p);
	return M.at(t.pos).NewClass(encl, typeargs, clazz, args, def);
	}

	public JCTree visitLambdaExpression(LambdaExpressionTree node, P p) {
	JCLambda t = (JCLambda) node;
	List<JCVariableDecl> params = copy(t.params, p);
	JCTree body = copy(t.body, p);
	return M.at(t.pos).Lambda(params, body);
	}

	public JCTree visitParenthesized(ParenthesizedTree node, P p) {
	JCParens t = (JCParens) node;
	JCExpression expr = copy(t.expr, p);
	return M.at(t.pos).Parens(expr);
	}

	public JCTree visitReturn(ReturnTree node, P p) {
	JCReturn t = (JCReturn) node;
	JCExpression expr = copy(t.expr, p);
	return M.at(t.pos).Return(expr);
	}

	public JCTree visitMemberSelect(MemberSelectTree node, P p) {
	JCFieldAccess t = (JCFieldAccess) node;
	JCExpression selected = copy(t.selected, p);
	return M.at(t.pos).Select(selected, t.name);
	}

	public JCTree visitMemberReference(MemberReferenceTree node, P p) {
	JCMemberReference t = (JCMemberReference) node;
	JCExpression expr = copy(t.expr, p);
	List<JCExpression> typeargs = copy(t.typeargs, p);
	return M.at(t.pos).Reference(t.mode, t.name, expr, typeargs);
	}

	public JCTree visitEmptyStatement(EmptyStatementTree node, P p) {
	JCSkip t = (JCSkip) node;
	return M.at(t.pos).Skip();
	}

	public JCTree visitSwitch(SwitchTree node, P p) {
	JCSwitch t = (JCSwitch) node;
	JCExpression selector = copy(t.selector, p);
	List<JCCase> cases = copy(t.cases, p);
	return M.at(t.pos).Switch(selector, cases);
	}

	public JCTree visitSynchronized(SynchronizedTree node, P p) {
	JCSynchronized t = (JCSynchronized) node;
	JCExpression lock = copy(t.lock, p);
	JCBlock body = copy(t.body, p);
	return M.at(t.pos).Synchronized(lock, body);
	}

	public JCTree visitThrow(ThrowTree node, P p) {
	JCThrow t = (JCThrow) node;
	JCExpression expr = copy(t.expr, p);
	return M.at(t.pos).Throw(expr);
	}

	public JCTree visitCompilationUnit(CompilationUnitTree node, P p) {
	JCCompilationUnit t = (JCCompilationUnit) node;
	List<JCAnnotation> packageAnnotations = copy(t.packageAnnotations, p);
	JCExpression pid = copy(t.pid, p);
	List<JCTree> defs = copy(t.defs, p);
	return M.at(t.pos).TopLevel(packageAnnotations, pid, defs);
	}

	public JCTree visitTry(TryTree node, P p) {
	JCTry t = (JCTry) node;
	List<JCTree> resources = copy(t.resources, p);
	JCBlock body = copy(t.body, p);
	List<JCCatch> catchers = copy(t.catchers, p);
	JCBlock finalizer = copy(t.finalizer, p);
	return M.at(t.pos).Try(resources, body, catchers, finalizer);
	}

	public JCTree visitParameterizedType(ParameterizedTypeTree node, P p) {
	JCTypeApply t = (JCTypeApply) node;
	JCExpression clazz = copy(t.clazz, p);
	List<JCExpression> arguments = copy(t.arguments, p);
	return M.at(t.pos).TypeApply(clazz, arguments);
	}

	public JCTree visitUnionType(UnionTypeTree node, P p) {
	JCTypeUnion t = (JCTypeUnion) node;
	List<JCExpression> components = copy(t.alternatives, p);
	return M.at(t.pos).TypeUnion(components);
	}

	public JCTree visitIntersectionType(IntersectionTypeTree node, P p) {
	JCTypeIntersection t = (JCTypeIntersection) node;
	List<JCExpression> bounds = copy(t.bounds, p);
	return M.at(t.pos).TypeIntersection(bounds);
	}

	public JCTree visitArrayType(ArrayTypeTree node, P p) {
	JCArrayTypeTree t = (JCArrayTypeTree) node;
	JCExpression elemtype = copy(t.elemtype, p);
	return M.at(t.pos).TypeArray(elemtype);
	}

	public JCTree visitTypeCast(TypeCastTree node, P p) {
	JCTypeCast t = (JCTypeCast) node;
	JCTree clazz = copy(t.clazz, p);
	JCExpression expr = copy(t.expr, p);
	return M.at(t.pos).TypeCast(clazz, expr);
	}

	public JCTree visitPrimitiveType(PrimitiveTypeTree node, P p) {
	JCPrimitiveTypeTree t = (JCPrimitiveTypeTree) node;
	return M.at(t.pos).TypeIdent(t.typetag);
	}

	public JCTree visitTypeParameter(TypeParameterTree node, P p) {
	JCTypeParameter t = (JCTypeParameter) node;
	List<JCAnnotation> annos = copy(t.annotations, p);
	List<JCExpression> bounds = copy(t.bounds, p);
	return M.at(t.pos).TypeParameter(t.name, bounds, annos);
	}

	public JCTree visitInstanceOf(InstanceOfTree node, P p) {
	JCInstanceOf t = (JCInstanceOf) node;
	JCExpression expr = copy(t.expr, p);
	JCTree clazz = copy(t.clazz, p);
	return M.at(t.pos).TypeTest(expr, clazz);
	}

	public JCTree visitUnary(UnaryTree node, P p) {
	JCUnary t = (JCUnary) node;
	JCExpression arg = copy(t.arg, p);
	return M.at(t.pos).Unary(t.getTag(), arg);
	}

	public JCTree visitVariable(VariableTree node, P p) {
	JCVariableDecl t = (JCVariableDecl) node;
	JCModifiers mods = copy(t.mods, p);
	JCExpression vartype = copy(t.vartype, p);
	if (t.nameexpr == null) {
	JCExpression init = copy(t.init, p);
	return M.at(t.pos).VarDef(mods, t.name, vartype, init);
	} else {
	JCExpression nameexpr = copy(t.nameexpr, p);
	return M.at(t.pos).ReceiverVarDef(mods, nameexpr, vartype);
	}
	}

	public JCTree visitWhileLoop(WhileLoopTree node, P p) {
	JCWhileLoop t = (JCWhileLoop) node;
	JCStatement body = copy(t.body, p);
	JCExpression cond = copy(t.cond, p);
	return M.at(t.pos).WhileLoop(cond, body);
	}

	public JCTree visitWildcard(WildcardTree node, P p) {
	JCWildcard t = (JCWildcard) node;
	TypeBoundKind kind = M.at(t.kind.pos).TypeBoundKind(t.kind.kind);
	JCTree inner = copy(t.inner, p);
	return M.at(t.pos).Wildcard(kind, inner);
	}

	public JCTree visitOther(Tree node, P p) {
	JCTree tree = (JCTree) node;
	switch (tree.getTag()) {
	case LETEXPR: {
	LetExpr t = (LetExpr) node;
	List<JCVariableDecl> defs = copy(t.defs, p);
	JCTree expr = copy(t.expr, p);
	return M.at(t.pos).LetExpr(defs, expr);
	}
	default:
	throw new AssertionError("unknown tree tag: " + tree.getTag());
	}
	}

	}