443 lines
13 KiB
Java
443 lines
13 KiB
Java
/*
|
|
* Copyright (c) 1999, 2014, 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.tools.javac.util.*;
|
|
import com.sun.tools.javac.tree.JCTree.*;
|
|
|
|
/** A subclass of Tree.Visitor, this class defines
|
|
* a general tree translator pattern. Translation proceeds recursively in
|
|
* left-to-right order down a tree, constructing translated nodes by
|
|
* overwriting existing ones. There is one visitor method in this class
|
|
* for every possible kind of tree node. To obtain a specific
|
|
* translator, it suffices to override those visitor methods which
|
|
* do some interesting work. The translator class itself takes care of all
|
|
* navigational aspects.
|
|
*
|
|
* <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 TreeTranslator extends JCTree.Visitor {
|
|
|
|
/** Visitor result field: a tree
|
|
*/
|
|
protected JCTree result;
|
|
|
|
/** Visitor method: Translate a single node.
|
|
*/
|
|
@SuppressWarnings("unchecked")
|
|
public <T extends JCTree> T translate(T tree) {
|
|
if (tree == null) {
|
|
return null;
|
|
} else {
|
|
tree.accept(this);
|
|
JCTree tmpResult = this.result;
|
|
this.result = null;
|
|
return (T)tmpResult; // XXX cast
|
|
}
|
|
}
|
|
|
|
/** Visitor method: translate a list of nodes.
|
|
*/
|
|
public <T extends JCTree> List<T> translate(List<T> trees) {
|
|
if (trees == null) return null;
|
|
for (List<T> l = trees; l.nonEmpty(); l = l.tail)
|
|
l.head = translate(l.head);
|
|
return trees;
|
|
}
|
|
|
|
/** Visitor method: translate a list of variable definitions.
|
|
*/
|
|
public List<JCVariableDecl> translateVarDefs(List<JCVariableDecl> trees) {
|
|
for (List<JCVariableDecl> l = trees; l.nonEmpty(); l = l.tail)
|
|
l.head = translate(l.head);
|
|
return trees;
|
|
}
|
|
|
|
/** Visitor method: translate a list of type parameters.
|
|
*/
|
|
public List<JCTypeParameter> translateTypeParams(List<JCTypeParameter> trees) {
|
|
for (List<JCTypeParameter> l = trees; l.nonEmpty(); l = l.tail)
|
|
l.head = translate(l.head);
|
|
return trees;
|
|
}
|
|
|
|
/** Visitor method: translate a list of case parts of switch statements.
|
|
*/
|
|
public List<JCCase> translateCases(List<JCCase> trees) {
|
|
for (List<JCCase> l = trees; l.nonEmpty(); l = l.tail)
|
|
l.head = translate(l.head);
|
|
return trees;
|
|
}
|
|
|
|
/** Visitor method: translate a list of catch clauses in try statements.
|
|
*/
|
|
public List<JCCatch> translateCatchers(List<JCCatch> trees) {
|
|
for (List<JCCatch> l = trees; l.nonEmpty(); l = l.tail)
|
|
l.head = translate(l.head);
|
|
return trees;
|
|
}
|
|
|
|
/** Visitor method: translate a list of catch clauses in try statements.
|
|
*/
|
|
public List<JCAnnotation> translateAnnotations(List<JCAnnotation> trees) {
|
|
for (List<JCAnnotation> l = trees; l.nonEmpty(); l = l.tail)
|
|
l.head = translate(l.head);
|
|
return trees;
|
|
}
|
|
|
|
/* ***************************************************************************
|
|
* Visitor methods
|
|
****************************************************************************/
|
|
|
|
public void visitTopLevel(JCCompilationUnit tree) {
|
|
tree.pid = translate(tree.pid);
|
|
tree.defs = translate(tree.defs);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitImport(JCImport tree) {
|
|
tree.qualid = translate(tree.qualid);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitClassDef(JCClassDecl tree) {
|
|
tree.mods = translate(tree.mods);
|
|
tree.typarams = translateTypeParams(tree.typarams);
|
|
tree.extending = translate(tree.extending);
|
|
tree.implementing = translate(tree.implementing);
|
|
tree.defs = translate(tree.defs);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitMethodDef(JCMethodDecl tree) {
|
|
tree.mods = translate(tree.mods);
|
|
tree.restype = translate(tree.restype);
|
|
tree.typarams = translateTypeParams(tree.typarams);
|
|
tree.recvparam = translate(tree.recvparam);
|
|
tree.params = translateVarDefs(tree.params);
|
|
tree.thrown = translate(tree.thrown);
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitVarDef(JCVariableDecl tree) {
|
|
tree.mods = translate(tree.mods);
|
|
tree.nameexpr = translate(tree.nameexpr);
|
|
tree.vartype = translate(tree.vartype);
|
|
tree.init = translate(tree.init);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitSkip(JCSkip tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitBlock(JCBlock tree) {
|
|
tree.stats = translate(tree.stats);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitDoLoop(JCDoWhileLoop tree) {
|
|
tree.body = translate(tree.body);
|
|
tree.cond = translate(tree.cond);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitWhileLoop(JCWhileLoop tree) {
|
|
tree.cond = translate(tree.cond);
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitForLoop(JCForLoop tree) {
|
|
tree.init = translate(tree.init);
|
|
tree.cond = translate(tree.cond);
|
|
tree.step = translate(tree.step);
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitForeachLoop(JCEnhancedForLoop tree) {
|
|
tree.var = translate(tree.var);
|
|
tree.expr = translate(tree.expr);
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitLabelled(JCLabeledStatement tree) {
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitSwitch(JCSwitch tree) {
|
|
tree.selector = translate(tree.selector);
|
|
tree.cases = translateCases(tree.cases);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitCase(JCCase tree) {
|
|
tree.pat = translate(tree.pat);
|
|
tree.stats = translate(tree.stats);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitSynchronized(JCSynchronized tree) {
|
|
tree.lock = translate(tree.lock);
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTry(JCTry tree) {
|
|
tree.resources = translate(tree.resources);
|
|
tree.body = translate(tree.body);
|
|
tree.catchers = translateCatchers(tree.catchers);
|
|
tree.finalizer = translate(tree.finalizer);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitCatch(JCCatch tree) {
|
|
tree.param = translate(tree.param);
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitConditional(JCConditional tree) {
|
|
tree.cond = translate(tree.cond);
|
|
tree.truepart = translate(tree.truepart);
|
|
tree.falsepart = translate(tree.falsepart);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitIf(JCIf tree) {
|
|
tree.cond = translate(tree.cond);
|
|
tree.thenpart = translate(tree.thenpart);
|
|
tree.elsepart = translate(tree.elsepart);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitExec(JCExpressionStatement tree) {
|
|
tree.expr = translate(tree.expr);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitBreak(JCBreak tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitContinue(JCContinue tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitReturn(JCReturn tree) {
|
|
tree.expr = translate(tree.expr);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitThrow(JCThrow tree) {
|
|
tree.expr = translate(tree.expr);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitAssert(JCAssert tree) {
|
|
tree.cond = translate(tree.cond);
|
|
tree.detail = translate(tree.detail);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitApply(JCMethodInvocation tree) {
|
|
tree.meth = translate(tree.meth);
|
|
tree.args = translate(tree.args);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitNewClass(JCNewClass tree) {
|
|
tree.encl = translate(tree.encl);
|
|
tree.clazz = translate(tree.clazz);
|
|
tree.args = translate(tree.args);
|
|
tree.def = translate(tree.def);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitLambda(JCLambda tree) {
|
|
tree.params = translate(tree.params);
|
|
tree.body = translate(tree.body);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitNewArray(JCNewArray tree) {
|
|
tree.annotations = translate(tree.annotations);
|
|
List<List<JCAnnotation>> dimAnnos = List.nil();
|
|
for (List<JCAnnotation> origDimAnnos : tree.dimAnnotations)
|
|
dimAnnos = dimAnnos.append(translate(origDimAnnos));
|
|
tree.dimAnnotations = dimAnnos;
|
|
tree.elemtype = translate(tree.elemtype);
|
|
tree.dims = translate(tree.dims);
|
|
tree.elems = translate(tree.elems);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitParens(JCParens tree) {
|
|
tree.expr = translate(tree.expr);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitAssign(JCAssign tree) {
|
|
tree.lhs = translate(tree.lhs);
|
|
tree.rhs = translate(tree.rhs);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitAssignop(JCAssignOp tree) {
|
|
tree.lhs = translate(tree.lhs);
|
|
tree.rhs = translate(tree.rhs);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitUnary(JCUnary tree) {
|
|
tree.arg = translate(tree.arg);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitBinary(JCBinary tree) {
|
|
tree.lhs = translate(tree.lhs);
|
|
tree.rhs = translate(tree.rhs);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeCast(JCTypeCast tree) {
|
|
tree.clazz = translate(tree.clazz);
|
|
tree.expr = translate(tree.expr);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeTest(JCInstanceOf tree) {
|
|
tree.expr = translate(tree.expr);
|
|
tree.clazz = translate(tree.clazz);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitIndexed(JCArrayAccess tree) {
|
|
tree.indexed = translate(tree.indexed);
|
|
tree.index = translate(tree.index);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitSelect(JCFieldAccess tree) {
|
|
tree.selected = translate(tree.selected);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitReference(JCMemberReference tree) {
|
|
tree.expr = translate(tree.expr);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitIdent(JCIdent tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitLiteral(JCLiteral tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeIdent(JCPrimitiveTypeTree tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeArray(JCArrayTypeTree tree) {
|
|
tree.elemtype = translate(tree.elemtype);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeApply(JCTypeApply tree) {
|
|
tree.clazz = translate(tree.clazz);
|
|
tree.arguments = translate(tree.arguments);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeUnion(JCTypeUnion tree) {
|
|
tree.alternatives = translate(tree.alternatives);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeIntersection(JCTypeIntersection tree) {
|
|
tree.bounds = translate(tree.bounds);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTypeParameter(JCTypeParameter tree) {
|
|
tree.annotations = translate(tree.annotations);
|
|
tree.bounds = translate(tree.bounds);
|
|
result = tree;
|
|
}
|
|
|
|
@Override
|
|
public void visitWildcard(JCWildcard tree) {
|
|
tree.kind = translate(tree.kind);
|
|
tree.inner = translate(tree.inner);
|
|
result = tree;
|
|
}
|
|
|
|
@Override
|
|
public void visitTypeBoundKind(TypeBoundKind tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitErroneous(JCErroneous tree) {
|
|
result = tree;
|
|
}
|
|
|
|
public void visitLetExpr(LetExpr tree) {
|
|
tree.defs = translateVarDefs(tree.defs);
|
|
tree.expr = translate(tree.expr);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitModifiers(JCModifiers tree) {
|
|
tree.annotations = translateAnnotations(tree.annotations);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitAnnotation(JCAnnotation tree) {
|
|
tree.annotationType = translate(tree.annotationType);
|
|
tree.args = translate(tree.args);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitAnnotatedType(JCAnnotatedType tree) {
|
|
tree.annotations = translate(tree.annotations);
|
|
tree.underlyingType = translate(tree.underlyingType);
|
|
result = tree;
|
|
}
|
|
|
|
public void visitTree(JCTree tree) {
|
|
throw new AssertionError(tree);
|
|
}
|
|
}
|