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package org.eclipse.jdt.internal.compiler.flow;
/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
import org.eclipse.jdt.internal.compiler.*;
import org.eclipse.jdt.internal.compiler.ast.*;
import org.eclipse.jdt.internal.compiler.lookup.*;
import org.eclipse.jdt.internal.compiler.problem.*;
/**
* Record conditional initialization status during definite assignment analysis
*
*/
public class ConditionalFlowInfo extends FlowInfo {
public FlowInfo initsWhenTrue;
public FlowInfo initsWhenFalse;
ConditionalFlowInfo(FlowInfo initsWhenTrue, FlowInfo initsWhenFalse){
this.initsWhenTrue = initsWhenTrue;
this.initsWhenFalse = initsWhenFalse;
}
public UnconditionalFlowInfo addInitializationsFrom(UnconditionalFlowInfo otherInits) {
return unconditionalInits().addInitializationsFrom(otherInits);
}
public UnconditionalFlowInfo addPotentialInitializationsFrom(UnconditionalFlowInfo otherInits) {
return unconditionalInits().addPotentialInitializationsFrom(otherInits);
}
public FlowInfo asNegatedCondition() {
FlowInfo extra = initsWhenTrue;
initsWhenTrue = initsWhenFalse;
initsWhenFalse = extra;
return this;
}
public FlowInfo copy() {
return new ConditionalFlowInfo(initsWhenTrue.copy(), initsWhenFalse.copy());
}
public FlowInfo initsWhenFalse() {
return initsWhenFalse;
}
public FlowInfo initsWhenTrue() {
return initsWhenTrue;
}
/**
* Check status of definite assignment for a field.
*/
public boolean isDefinitelyAssigned(FieldBinding field) {
return initsWhenTrue.isDefinitelyAssigned(field)
&& initsWhenFalse.isDefinitelyAssigned(field);
}
/**
* Check status of definite assignment for a local variable.
*/
public boolean isDefinitelyAssigned(LocalVariableBinding local) {
return initsWhenTrue.isDefinitelyAssigned(local)
&& initsWhenFalse.isDefinitelyAssigned(local);
}
public boolean isFakeReachable(){
return unconditionalInits().isFakeReachable();
//should maybe directly be: false
}
/**
* Check status of potential assignment for a field.
*/
public boolean isPotentiallyAssigned(FieldBinding field) {
return initsWhenTrue.isPotentiallyAssigned(field)
|| initsWhenFalse.isPotentiallyAssigned(field);
}
/**
* Check status of potential assignment for a local variable.
*/
public boolean isPotentiallyAssigned(LocalVariableBinding local) {
return initsWhenTrue.isPotentiallyAssigned(local)
|| initsWhenFalse.isPotentiallyAssigned(local);
}
/**
* Record a field got definitely assigned.
*/
public void markAsDefinitelyAssigned(FieldBinding field) {
initsWhenTrue.markAsDefinitelyAssigned(field);
initsWhenFalse.markAsDefinitelyAssigned(field);
}
/**
* Record a field got definitely assigned.
*/
public void markAsDefinitelyAssigned(LocalVariableBinding local) {
initsWhenTrue.markAsDefinitelyAssigned(local);
initsWhenFalse.markAsDefinitelyAssigned(local);
}
/**
* Clear the initialization info for a field
*/
public void markAsDefinitelyNotAssigned(FieldBinding field) {
initsWhenTrue.markAsDefinitelyNotAssigned(field);
initsWhenFalse.markAsDefinitelyNotAssigned(field);
}
/**
* Clear the initialization info for a local variable
*/
public void markAsDefinitelyNotAssigned(LocalVariableBinding local) {
initsWhenTrue.markAsDefinitelyNotAssigned(local);
initsWhenFalse.markAsDefinitelyNotAssigned(local);
}
public FlowInfo markAsFakeReachable(boolean isFakeReachable) {
initsWhenTrue.markAsFakeReachable(isFakeReachable);
initsWhenFalse.markAsFakeReachable(isFakeReachable);
return this;
}
public UnconditionalFlowInfo mergedWith(UnconditionalFlowInfo otherInits) {
return unconditionalInits().mergedWith(otherInits);
}
public String toString() {
return "FlowInfo<true: "/*nonNLS*/ + initsWhenTrue.toString() + ", false: "/*nonNLS*/ + initsWhenFalse.toString() + ">"/*nonNLS*/;
}
public UnconditionalFlowInfo unconditionalInits() {
return initsWhenTrue.unconditionalInits().copy()
.mergedWith(initsWhenFalse.unconditionalInits());
}
}
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