/*
* Copyright (c) 2011, 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.sjavac.comp;
import java.util.Iterator;
import java.util.List;
import javax.lang.model.element.Modifier;
import javax.lang.model.element.ExecutableElement;
import javax.lang.model.element.TypeElement;
import javax.lang.model.element.VariableElement;
import javax.lang.model.type.TypeMirror;
import javax.lang.model.util.ElementScanner6;
/** Utility class that constructs a textual representation
* of the public api of a class.
*
* <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></p>
*/
public class PubapiVisitor extends ElementScanner6<Void, Void> {
StringBuffer sb;
// Important that it is 1! Part of protocol over wire, silly yes.
// Fix please.
int indent = 1;
public PubapiVisitor(StringBuffer sb) {
this.sb = sb;
}
String depth(int l) {
return " ".substring(0, l);
}
@Override
public Void visitType(TypeElement e, Void p) {
if (e.getModifiers().contains(Modifier.PUBLIC)
|| e.getModifiers().contains(Modifier.PROTECTED))
{
sb.append(depth(indent) + "TYPE " + e.getQualifiedName() + "\n");
indent += 2;
Void v = super.visitType(e, p);
indent -= 2;
return v;
}
return null;
}
@Override
public Void visitVariable(VariableElement e, Void p) {
if (e.getModifiers().contains(Modifier.PUBLIC)
|| e.getModifiers().contains(Modifier.PROTECTED)) {
sb.append(depth(indent)).append("VAR ")
.append(makeVariableString(e)).append("\n");
}
// Safe to not recurse here, because the only thing
// to visit here is the constructor of a variable declaration.
// If it happens to contain an anonymous inner class (which it might)
// then this class is never visible outside of the package anyway, so
// we are allowed to ignore it here.
return null;
}
@Override
public Void visitExecutable(ExecutableElement e, Void p) {
if (e.getModifiers().contains(Modifier.PUBLIC)
|| e.getModifiers().contains(Modifier.PROTECTED)) {
sb.append(depth(indent)).append("METHOD ")
.append(makeMethodString(e)).append("\n");
}
return null;
}
/**
* Creates a String representation of a method element with everything
* necessary to track all public aspects of it in an API.
* @param e Element to create String for.
* @return String representation of element.
*/
protected String makeMethodString(ExecutableElement e) {
StringBuilder result = new StringBuilder();
for (Modifier modifier : e.getModifiers()) {
result.append(modifier.toString());
result.append(" ");
}
result.append(e.getReturnType().toString());
result.append(" ");
result.append(e.toString());
List<? extends TypeMirror> thrownTypes = e.getThrownTypes();
if (!thrownTypes.isEmpty()) {
result.append(" throws ");
for (Iterator<? extends TypeMirror> iterator = thrownTypes
.iterator(); iterator.hasNext();) {
TypeMirror typeMirror = iterator.next();
result.append(typeMirror.toString());
if (iterator.hasNext()) {
result.append(", ");
}
}
}
return result.toString();
}
/**
* Creates a String representation of a variable element with everything
* necessary to track all public aspects of it in an API.
* @param e Element to create String for.
* @return String representation of element.
*/
protected String makeVariableString(VariableElement e) {
StringBuilder result = new StringBuilder();
for (Modifier modifier : e.getModifiers()) {
result.append(modifier.toString());
result.append(" ");
}
result.append(e.asType().toString());
result.append(" ");
result.append(e.toString());
Object value = e.getConstantValue();
if (value != null) {
result.append(" = ");
if (e.asType().toString().equals("char")) {
int v = (int)value.toString().charAt(0);
result.append("'\\u"+Integer.toString(v,16)+"'");
} else {
result.append(value.toString());
}
}
return result.toString();
}
}