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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.struct.gen;
import org.jetbrains.java.decompiler.code.CodeConstants;
import org.jetbrains.java.decompiler.struct.StructMethod;
import org.jetbrains.java.decompiler.util.ListStack;
import java.util.ArrayList;
import java.util.List;
public class DataPoint {
private List<VarType> localVariables = new ArrayList<VarType>();
private ListStack<VarType> stack = new ListStack<VarType>();
public void setVariable(int index, VarType value) {
if (index >= localVariables.size()) {
for (int i = localVariables.size(); i <= index; i++) {
localVariables.add(new VarType(CodeConstants.TYPE_NOTINITIALIZED));
}
}
localVariables.set(index, value);
}
public VarType getVariable(int index) {
if (index < localVariables.size()) {
return localVariables.get(index);
}
else if (index < 0) {
throw new IndexOutOfBoundsException();
}
else {
return new VarType(CodeConstants.TYPE_NOTINITIALIZED);
}
}
public DataPoint copy() {
DataPoint point = new DataPoint();
point.setLocalVariables(new ArrayList<VarType>(localVariables));
point.setStack(stack.clone());
return point;
}
public static DataPoint getInitialDataPoint(StructMethod mt) {
DataPoint point = new DataPoint();
MethodDescriptor md = MethodDescriptor.parseDescriptor(mt.getDescriptor());
int k = 0;
if (!mt.hasModifier(CodeConstants.ACC_STATIC)) {
point.setVariable(k++, new VarType(CodeConstants.TYPE_OBJECT, 0, null));
}
for (int i = 0; i < md.params.length; i++) {
VarType var = md.params[i];
point.setVariable(k++, var);
if (var.stack_size == 2) {
point.setVariable(k++, new VarType(CodeConstants.TYPE_GROUP2EMPTY));
}
}
return point;
}
public List<VarType> getLocalVariables() {
return localVariables;
}
public void setLocalVariables(List<VarType> localVariables) {
this.localVariables = localVariables;
}
public ListStack<VarType> getStack() {
return stack;
}
public void setStack(ListStack<VarType> stack) {
this.stack = stack;
}
}
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