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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jetbrains.java.decompiler.modules.decompiler.exps;
import org.jetbrains.java.decompiler.code.CodeConstants;
import org.jetbrains.java.decompiler.main.ClassesProcessor.ClassNode;
import org.jetbrains.java.decompiler.main.DecompilerContext;
import org.jetbrains.java.decompiler.main.rels.MethodWrapper;
import org.jetbrains.java.decompiler.modules.decompiler.ExprProcessor;
import org.jetbrains.java.decompiler.modules.decompiler.vars.CheckTypesResult;
import org.jetbrains.java.decompiler.struct.attr.StructExceptionsAttribute;
import org.jetbrains.java.decompiler.struct.gen.VarType;
import org.jetbrains.java.decompiler.util.InterpreterUtil;
import java.util.ArrayList;
import java.util.List;
public class ExitExprent extends Exprent {
public static final int EXIT_RETURN = 0;
public static final int EXIT_THROW = 1;
// return or throw statement
private int exittype;
private Exprent value;
private VarType rettype;
{
this.type = EXPRENT_EXIT;
}
public ExitExprent(int exittype, Exprent value, VarType rettype) {
this.exittype = exittype;
this.value = value;
this.rettype = rettype;
}
public Exprent copy() {
return new ExitExprent(exittype, value == null ? null : value.copy(), rettype);
}
public CheckTypesResult checkExprTypeBounds() {
CheckTypesResult result = new CheckTypesResult();
if (exittype == EXIT_RETURN && rettype.type != CodeConstants.TYPE_VOID) {
result.addMinTypeExprent(value, VarType.getMinTypeInFamily(rettype.type_family));
result.addMaxTypeExprent(value, rettype);
}
return result;
}
public List<Exprent> getAllExprents() {
List<Exprent> lst = new ArrayList<Exprent>();
if (value != null) {
lst.add(value);
}
return lst;
}
public String toJava(int indent) {
if (exittype == EXIT_RETURN) {
StringBuilder buffer = new StringBuilder();
if (rettype.type != CodeConstants.TYPE_VOID) {
buffer.append(" ");
ExprProcessor.getCastedExprent(value, rettype, buffer, indent, false);
}
return "return" + buffer.toString();
}
else {
MethodWrapper meth = (MethodWrapper)DecompilerContext.getProperty(DecompilerContext.CURRENT_METHOD_WRAPPER);
ClassNode node = ((ClassNode)DecompilerContext.getProperty(DecompilerContext.CURRENT_CLASS_NODE));
if (meth != null && node != null) {
StructExceptionsAttribute attr = (StructExceptionsAttribute)meth.methodStruct.getAttributes().getWithKey("Exceptions");
if (attr != null) {
String classname = null;
for (int i = 0; i < attr.getThrowsExceptions().size(); i++) {
String excclassname = attr.getExcClassname(i, node.classStruct.getPool());
if ("java/lang/Throwable".equals(excclassname)) {
classname = excclassname;
break;
}
else if ("java/lang/Exception".equals(excclassname)) {
classname = excclassname;
}
}
if (classname != null) {
VarType exctype = new VarType(classname, true);
StringBuilder buffer = new StringBuilder();
ExprProcessor.getCastedExprent(value, exctype, buffer, indent, false);
return "throw " + buffer.toString();
}
}
}
return "throw " + value.toJava(indent);
}
}
public boolean equals(Object o) {
if (o == this) return true;
if (o == null || !(o instanceof ExitExprent)) return false;
ExitExprent et = (ExitExprent)o;
return exittype == et.getExittype() &&
InterpreterUtil.equalObjects(value, et.getValue());
}
public void replaceExprent(Exprent oldexpr, Exprent newexpr) {
if (oldexpr == value) {
value = newexpr;
}
}
public int getExittype() {
return exittype;
}
public Exprent getValue() {
return value;
}
public VarType getRettype() {
return rettype;
}
}
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