/*
ImmediateOperand.java
(c) 2008-2013 Edward Swartz
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
which accompanies this distribution, and is available at
http://www.eclipse.org/legal/epl-v10.html
*/
package v9t9.tools.asm.operand.hl;
import v9t9.common.asm.IInstruction;
import v9t9.common.asm.ResolveException;
import v9t9.tools.asm.IAssembler;
import v9t9.tools.asm.operand.ll.LLForwardOperand;
import v9t9.tools.asm.operand.ll.LLImmedOperand;
import v9t9.tools.asm.operand.ll.LLOperand;
/**
* @author ejs
*
*/
public class ImmediateOperand extends BaseOperand {
protected final AssemblerOperand immed;
public ImmediateOperand(AssemblerOperand immed) {
this.immed = immed;
}
@Override
public String toString() {
return immed.toString();
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((immed == null) ? 0 : immed.hashCode());
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
ImmediateOperand other = (ImmediateOperand) obj;
if (immed == null) {
if (other.immed != null) {
return false;
}
} else if (!immed.equals(other.immed)) {
return false;
}
return true;
}
/* (non-Javadoc)
* @see v9t9.tools.asm.operand.hl.AssemblerOperand#isMemory()
*/
@Override
public boolean isMemory() {
return false;
}
/* (non-Javadoc)
* @see v9t9.tools.asm.operand.hl.AssemblerOperand#isRegister()
*/
@Override
public boolean isRegister() {
return false;
}
/* (non-Javadoc)
* @see v9t9.tools.asm.operand.hl.AssemblerOperand#isConst()
*/
@Override
public boolean isConst() {
return immed.isConst();
}
public LLOperand resolve(IAssembler assembler, IInstruction inst)
throws ResolveException {
LLOperand op = immed.resolve(assembler, inst);
if (op instanceof LLForwardOperand)
return new LLForwardOperand(this, 2);
if (!(op instanceof LLImmedOperand)) {
throw new ResolveException(op, "Expected an immediate");
}
return op;
}
/* (non-Javadoc)
* @see v9t9.tools.asm.operand.hl.BaseOperand#replaceOperand(v9t9.tools.asm.operand.hl.AssemblerOperand, v9t9.tools.asm.operand.hl.AssemblerOperand)
*/
@Override
public AssemblerOperand replaceOperand(AssemblerOperand src,
AssemblerOperand dst) {
if (src.equals(this))
return dst;
AssemblerOperand newVal = immed.replaceOperand(src, dst);
if (newVal != immed) {
return new ImmediateOperand(newVal);
}
return this;
}
/* (non-Javadoc)
* @see v9t9.tools.asm.operand.hl.AssemblerOperand#getChildren()
*/
@Override
public AssemblerOperand[] getChildren() {
return new AssemblerOperand[] { immed };
}
/* (non-Javadoc)
* @see v9t9.tools.asm.operand.hl.AssemblerOperand#addOffset(int)
*/
@Override
public AssemblerOperand addOffset(int i) {
return new ImmediateOperand(immed.addOffset(i));
}
}