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/*
* Fernflower - The Analytical Java Decompiler
* http://www.reversed-java.com
*
* (C) 2008 - 2010, Stiver
*
* This software is NEITHER public domain NOR free software
* as per GNU License. See license.txt for more details.
*
* This software is distributed WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE.
*/
package org.jetbrains.java.decompiler.struct.gen;
import java.util.ArrayList;
import java.util.List;
import org.jetbrains.java.decompiler.code.CodeConstants;
import org.jetbrains.java.decompiler.struct.StructMethod;
import org.jetbrains.java.decompiler.util.ListStack;
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.getAccessFlags() & CodeConstants.ACC_STATIC) == 0) {
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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