author | jjg |
Thu, 10 Jun 2010 17:09:56 -0700 | |
changeset 5848 | c5a4ce47e780 |
parent 5847 | 1908176fd6e3 |
child 6590 | f745e683da2c |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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||
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package com.sun.tools.javac.api; |
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||
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import java.io.IOException; |
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import java.util.Map; |
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30 |
import javax.annotation.processing.ProcessingEnvironment; |
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31 |
import javax.lang.model.element.AnnotationMirror; |
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import javax.lang.model.element.AnnotationValue; |
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import javax.lang.model.element.Element; |
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import javax.lang.model.element.ExecutableElement; |
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import javax.lang.model.element.TypeElement; |
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import javax.lang.model.type.DeclaredType; |
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import javax.lang.model.type.TypeMirror; |
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import javax.tools.Diagnostic; |
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import javax.tools.JavaCompiler; |
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import javax.tools.JavaFileObject; |
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41 |
||
42 |
import com.sun.source.tree.CompilationUnitTree; |
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43 |
import com.sun.source.tree.Scope; |
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44 |
import com.sun.source.tree.Tree; |
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45 |
import com.sun.source.util.SourcePositions; |
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import com.sun.source.util.TreePath; |
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47 |
import com.sun.source.util.Trees; |
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48 |
import com.sun.tools.javac.code.Symbol.ClassSymbol; |
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49 |
import com.sun.tools.javac.code.Symbol.TypeSymbol; |
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import com.sun.tools.javac.code.Symbol; |
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import com.sun.tools.javac.comp.Attr; |
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import com.sun.tools.javac.comp.AttrContext; |
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import com.sun.tools.javac.comp.Enter; |
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54 |
import com.sun.tools.javac.comp.Env; |
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55 |
import com.sun.tools.javac.comp.MemberEnter; |
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import com.sun.tools.javac.comp.Resolve; |
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57 |
import com.sun.tools.javac.model.JavacElements; |
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import com.sun.tools.javac.processing.JavacMessager; |
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import com.sun.tools.javac.processing.JavacProcessingEnvironment; |
60 |
import com.sun.tools.javac.tree.JCTree.*; |
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import com.sun.tools.javac.tree.JCTree; |
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import com.sun.tools.javac.tree.TreeCopier; |
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import com.sun.tools.javac.tree.TreeInfo; |
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import com.sun.tools.javac.tree.TreeMaker; |
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import com.sun.tools.javac.util.Context; |
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import com.sun.tools.javac.util.JCDiagnostic; |
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import com.sun.tools.javac.util.List; |
68 |
import com.sun.tools.javac.util.Log; |
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import com.sun.tools.javac.util.Pair; |
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70 |
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/** |
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* Provides an implementation of Trees. |
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* |
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* <p><b>This is NOT part of any supported API. |
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* If you write code that depends on this, you do so at your own |
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* risk. This code and its internal interfaces are subject to change |
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* or deletion without notice.</b></p> |
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* |
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* @author Peter von der Ahé |
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*/ |
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public class JavacTrees extends Trees { |
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private final Resolve resolve; |
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private final Enter enter; |
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private final Log log; |
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private final MemberEnter memberEnter; |
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private final Attr attr; |
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private final TreeMaker treeMaker; |
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private final JavacElements elements; |
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private final JavacTaskImpl javacTaskImpl; |
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92 |
public static JavacTrees instance(JavaCompiler.CompilationTask task) { |
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93 |
if (!(task instanceof JavacTaskImpl)) |
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throw new IllegalArgumentException(); |
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95 |
return instance(((JavacTaskImpl)task).getContext()); |
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} |
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98 |
public static JavacTrees instance(ProcessingEnvironment env) { |
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if (!(env instanceof JavacProcessingEnvironment)) |
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throw new IllegalArgumentException(); |
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101 |
return instance(((JavacProcessingEnvironment)env).getContext()); |
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} |
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104 |
public static JavacTrees instance(Context context) { |
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JavacTrees instance = context.get(JavacTrees.class); |
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if (instance == null) |
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instance = new JavacTrees(context); |
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return instance; |
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} |
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110 |
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111 |
private JavacTrees(Context context) { |
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112 |
context.put(JavacTrees.class, this); |
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113 |
attr = Attr.instance(context); |
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enter = Enter.instance(context); |
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elements = JavacElements.instance(context); |
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log = Log.instance(context); |
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resolve = Resolve.instance(context); |
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treeMaker = TreeMaker.instance(context); |
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memberEnter = MemberEnter.instance(context); |
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javacTaskImpl = context.get(JavacTaskImpl.class); |
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} |
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123 |
public SourcePositions getSourcePositions() { |
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return new SourcePositions() { |
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125 |
public long getStartPosition(CompilationUnitTree file, Tree tree) { |
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return TreeInfo.getStartPos((JCTree) tree); |
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} |
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129 |
public long getEndPosition(CompilationUnitTree file, Tree tree) { |
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Map<JCTree,Integer> endPositions = ((JCCompilationUnit) file).endPositions; |
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return TreeInfo.getEndPos((JCTree) tree, endPositions); |
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} |
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}; |
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} |
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136 |
public JCClassDecl getTree(TypeElement element) { |
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137 |
return (JCClassDecl) getTree((Element) element); |
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} |
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140 |
public JCMethodDecl getTree(ExecutableElement method) { |
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141 |
return (JCMethodDecl) getTree((Element) method); |
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142 |
} |
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143 |
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144 |
public JCTree getTree(Element element) { |
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Symbol symbol = (Symbol) element; |
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146 |
TypeSymbol enclosing = symbol.enclClass(); |
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Env<AttrContext> env = enter.getEnv(enclosing); |
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148 |
if (env == null) |
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return null; |
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JCClassDecl classNode = env.enclClass; |
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151 |
if (classNode != null) { |
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152 |
if (TreeInfo.symbolFor(classNode) == element) |
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return classNode; |
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for (JCTree node : classNode.getMembers()) |
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155 |
if (TreeInfo.symbolFor(node) == element) |
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return node; |
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} |
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158 |
return null; |
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} |
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160 |
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161 |
public JCTree getTree(Element e, AnnotationMirror a) { |
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return getTree(e, a, null); |
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} |
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165 |
public JCTree getTree(Element e, AnnotationMirror a, AnnotationValue v) { |
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Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v); |
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167 |
if (treeTopLevel == null) |
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return null; |
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return treeTopLevel.fst; |
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} |
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172 |
public TreePath getPath(CompilationUnitTree unit, Tree node) { |
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173 |
return TreePath.getPath(unit, node); |
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} |
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176 |
public TreePath getPath(Element e) { |
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return getPath(e, null, null); |
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} |
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180 |
public TreePath getPath(Element e, AnnotationMirror a) { |
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return getPath(e, a, null); |
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182 |
} |
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184 |
public TreePath getPath(Element e, AnnotationMirror a, AnnotationValue v) { |
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final Pair<JCTree, JCCompilationUnit> treeTopLevel = elements.getTreeAndTopLevel(e, a, v); |
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186 |
if (treeTopLevel == null) |
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187 |
return null; |
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return TreePath.getPath(treeTopLevel.snd, treeTopLevel.fst); |
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189 |
} |
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190 |
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191 |
public Element getElement(TreePath path) { |
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Tree t = path.getLeaf(); |
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return TreeInfo.symbolFor((JCTree) t); |
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} |
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196 |
public TypeMirror getTypeMirror(TreePath path) { |
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Tree t = path.getLeaf(); |
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return ((JCTree)t).type; |
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199 |
} |
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200 |
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201 |
public JavacScope getScope(TreePath path) { |
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202 |
return new JavacScope(getAttrContext(path)); |
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203 |
} |
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204 |
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205 |
public boolean isAccessible(Scope scope, TypeElement type) { |
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206 |
if (scope instanceof JavacScope && type instanceof ClassSymbol) { |
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Env<AttrContext> env = ((JavacScope) scope).env; |
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return resolve.isAccessible(env, (ClassSymbol)type); |
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209 |
} else |
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return false; |
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211 |
} |
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213 |
public boolean isAccessible(Scope scope, Element member, DeclaredType type) { |
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214 |
if (scope instanceof JavacScope |
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&& member instanceof Symbol |
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&& type instanceof com.sun.tools.javac.code.Type) { |
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Env<AttrContext> env = ((JavacScope) scope).env; |
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return resolve.isAccessible(env, (com.sun.tools.javac.code.Type)type, (Symbol)member); |
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} else |
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return false; |
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} |
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223 |
private Env<AttrContext> getAttrContext(TreePath path) { |
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if (!(path.getLeaf() instanceof JCTree)) // implicit null-check |
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throw new IllegalArgumentException(); |
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227 |
// if we're being invoked via from a JSR199 client, we need to make sure |
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// all the classes have been entered; if we're being invoked from JSR269, |
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// then the classes will already have been entered. |
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230 |
if (javacTaskImpl != null) { |
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231 |
try { |
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javacTaskImpl.enter(null); |
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} catch (IOException e) { |
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throw new Error("unexpected error while entering symbols: " + e); |
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} |
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} |
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238 |
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239 |
JCCompilationUnit unit = (JCCompilationUnit) path.getCompilationUnit(); |
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Copier copier = new Copier(treeMaker.forToplevel(unit)); |
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242 |
Env<AttrContext> env = null; |
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JCMethodDecl method = null; |
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JCVariableDecl field = null; |
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246 |
List<Tree> l = List.nil(); |
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TreePath p = path; |
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while (p != null) { |
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l = l.prepend(p.getLeaf()); |
|
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p = p.getParentPath(); |
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} |
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||
253 |
for ( ; l.nonEmpty(); l = l.tail) { |
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Tree tree = l.head; |
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switch (tree.getKind()) { |
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case COMPILATION_UNIT: |
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// System.err.println("COMP: " + ((JCCompilationUnit)tree).sourcefile); |
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258 |
env = enter.getTopLevelEnv((JCCompilationUnit)tree); |
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259 |
break; |
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case CLASS: |
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// System.err.println("CLASS: " + ((JCClassDecl)tree).sym.getSimpleName()); |
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262 |
env = enter.getClassEnv(((JCClassDecl)tree).sym); |
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break; |
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case METHOD: |
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// System.err.println("METHOD: " + ((JCMethodDecl)tree).sym.getSimpleName()); |
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266 |
method = (JCMethodDecl)tree; |
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break; |
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268 |
case VARIABLE: |
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269 |
// System.err.println("FIELD: " + ((JCVariableDecl)tree).sym.getSimpleName()); |
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270 |
field = (JCVariableDecl)tree; |
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271 |
break; |
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272 |
case BLOCK: { |
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273 |
// System.err.println("BLOCK: "); |
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274 |
if (method != null) |
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275 |
env = memberEnter.getMethodEnv(method, env); |
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276 |
JCTree body = copier.copy((JCTree)tree, (JCTree) path.getLeaf()); |
|
277 |
env = attribStatToTree(body, env, copier.leafCopy); |
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278 |
return env; |
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279 |
} |
|
280 |
default: |
|
281 |
// System.err.println("DEFAULT: " + tree.getKind()); |
|
282 |
if (field != null && field.getInitializer() == tree) { |
|
283 |
env = memberEnter.getInitEnv(field, env); |
|
284 |
JCExpression expr = copier.copy((JCExpression)tree, (JCTree) path.getLeaf()); |
|
285 |
env = attribExprToTree(expr, env, copier.leafCopy); |
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286 |
return env; |
|
287 |
} |
|
288 |
} |
|
289 |
} |
|
290 |
return field != null ? memberEnter.getInitEnv(field, env) : env; |
|
291 |
} |
|
292 |
||
293 |
private Env<AttrContext> attribStatToTree(JCTree stat, Env<AttrContext>env, JCTree tree) { |
|
294 |
JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
|
295 |
try { |
|
296 |
return attr.attribStatToTree(stat, env, tree); |
|
297 |
} finally { |
|
298 |
log.useSource(prev); |
|
299 |
} |
|
300 |
} |
|
301 |
||
302 |
private Env<AttrContext> attribExprToTree(JCExpression expr, Env<AttrContext>env, JCTree tree) { |
|
303 |
JavaFileObject prev = log.useSource(env.toplevel.sourcefile); |
|
304 |
try { |
|
305 |
return attr.attribExprToTree(expr, env, tree); |
|
306 |
} finally { |
|
307 |
log.useSource(prev); |
|
308 |
} |
|
309 |
} |
|
310 |
||
311 |
/** |
|
312 |
* Makes a copy of a tree, noting the value resulting from copying a particular leaf. |
|
313 |
**/ |
|
314 |
static class Copier extends TreeCopier<JCTree> { |
|
315 |
JCTree leafCopy = null; |
|
316 |
||
317 |
Copier(TreeMaker M) { |
|
318 |
super(M); |
|
319 |
} |
|
320 |
||
321 |
public <T extends JCTree> T copy(T t, JCTree leaf) { |
|
322 |
T t2 = super.copy(t, leaf); |
|
323 |
if (t == leaf) |
|
324 |
leafCopy = t2; |
|
325 |
return t2; |
|
326 |
} |
|
327 |
} |
|
1257
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328 |
|
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
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|
329 |
/** |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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diff
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|
330 |
* Gets the original type from the ErrorType object. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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10
diff
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|
331 |
* @param errorType The errorType for which we want to get the original type. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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|
332 |
* @returns TypeMirror corresponding to the original type, replaced by the ErrorType. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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10
diff
changeset
|
333 |
* noType (type.tag == NONE) is returned if there is no original type. |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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diff
changeset
|
334 |
*/ |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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diff
changeset
|
335 |
public TypeMirror getOriginalType(javax.lang.model.type.ErrorType errorType) { |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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|
336 |
if (errorType instanceof com.sun.tools.javac.code.Type.ErrorType) { |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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diff
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|
337 |
return ((com.sun.tools.javac.code.Type.ErrorType)errorType).getOriginalType(); |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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diff
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|
338 |
} |
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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|
339 |
|
873b053bf757
6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
jjg
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|
340 |
return com.sun.tools.javac.code.Type.noType; |
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6557752: Original type of an AST should be made available even if it is replaced with an ErrorType
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|
341 |
} |
3149 | 342 |
|
343 |
/** |
|
344 |
* Prints a message of the specified kind at the location of the |
|
345 |
* tree within the provided compilation unit |
|
346 |
* |
|
347 |
* @param kind the kind of message |
|
348 |
* @param msg the message, or an empty string if none |
|
349 |
* @param t the tree to use as a position hint |
|
350 |
* @param root the compilation unit that contains tree |
|
351 |
*/ |
|
352 |
public void printMessage(Diagnostic.Kind kind, CharSequence msg, |
|
353 |
com.sun.source.tree.Tree t, |
|
354 |
com.sun.source.tree.CompilationUnitTree root) { |
|
355 |
JavaFileObject oldSource = null; |
|
356 |
JavaFileObject newSource = null; |
|
357 |
JCDiagnostic.DiagnosticPosition pos = null; |
|
358 |
||
359 |
newSource = root.getSourceFile(); |
|
360 |
if (newSource != null) { |
|
361 |
oldSource = log.useSource(newSource); |
|
362 |
pos = ((JCTree) t).pos(); |
|
363 |
} |
|
364 |
||
365 |
try { |
|
366 |
switch (kind) { |
|
367 |
case ERROR: |
|
368 |
boolean prev = log.multipleErrors; |
|
369 |
try { |
|
370 |
log.error(pos, "proc.messager", msg.toString()); |
|
371 |
} finally { |
|
372 |
log.multipleErrors = prev; |
|
373 |
} |
|
374 |
break; |
|
375 |
||
376 |
case WARNING: |
|
377 |
log.warning(pos, "proc.messager", msg.toString()); |
|
378 |
break; |
|
379 |
||
380 |
case MANDATORY_WARNING: |
|
381 |
log.mandatoryWarning(pos, "proc.messager", msg.toString()); |
|
382 |
break; |
|
383 |
||
384 |
default: |
|
385 |
log.note(pos, "proc.messager", msg.toString()); |
|
386 |
} |
|
387 |
} finally { |
|
388 |
if (oldSource != null) |
|
389 |
log.useSource(oldSource); |
|
390 |
} |
|
391 |
} |
|
10 | 392 |
} |