org.eclipse.jdt.internal.compiler.lookup.InferenceContext Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* 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
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.compiler.lookup;
/**
* Context used during type inference for a generic method invocation
*/
public class InferenceContext {
private TypeBinding[][][] collectedSubstitutes;
MethodBinding genericMethod;
int depth;
int status;
TypeBinding expectedType;
boolean hasExplicitExpectedType; // indicates whether the expectedType (if set) was explicit in code, or set by default
public boolean isUnchecked;
TypeBinding[] substitutes;
final static int FAILED = 1;
public InferenceContext(MethodBinding genericMethod) {
this.genericMethod = genericMethod;
TypeVariableBinding[] typeVariables = genericMethod.typeVariables;
int varLength = typeVariables.length;
this.collectedSubstitutes = new TypeBinding[varLength][3][];
this.substitutes = new TypeBinding[varLength];
}
public TypeBinding[] getSubstitutes(TypeVariableBinding typeVariable, int constraint) {
return this.collectedSubstitutes[typeVariable.rank][constraint];
}
/**
* Returns true if any unresolved variable is detected, i.e. any variable is substituted with itself
*/
public boolean hasUnresolvedTypeArgument() {
for (int i = 0, varLength = this.substitutes.length; i :"); //$NON-NLS-1$
break;
}
if (constraintCollected[k] != null) {
buffer.append(constraintCollected[k].shortReadableName());
}
}
}
}
}
buffer.append("}]");//$NON-NLS-1$
buffer.append("\n\t[inferred=");//$NON-NLS-1$
int count = 0;
for (int i = 0, length = this.substitutes == null ? 0 : this.substitutes.length; i < length; i++) {
if (this.substitutes[i] == null) continue;
count++;
buffer.append('{').append(this.genericMethod.typeVariables[i].sourceName);
buffer.append("=").append(this.substitutes[i].shortReadableName()).append('}'); //$NON-NLS-1$
}
if (count == 0) buffer.append("{}"); //$NON-NLS-1$
buffer.append(']');
return buffer.toString();
}
}