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/**********************************************************************
* Copyright (c) 2002,2003 Timesys Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* Timesys - Initial API and implementation
**********************************************************************/
package org.eclipse.cdt.core.builder.model;
/**
* Default implementation of the ICBuildVariable interface.
* <p>
* This implementation is capable of handling both static
* resolution (where the variable part is fixed at generation
* time) and dynamic resolution (where the variable part
* may change over time, depending on context.)
* <p>
* @see ICBuildVariable
* @see ICBuildVariableProvider
* @see ICBuildVariableResolver
*/
public class CBuildVariable implements ICBuildVariable {
private String fFixed;
private String fVariable;
private ICBuildVariableResolver fResolver;
/**
* Default implementation of ICBuildVariableResolver that
* simply returns a previously provided string as the
* resolved value for the build variable.
*/
static private class StringResolver implements ICBuildVariableResolver {
private String fValue;
public StringResolver(String value) {
fValue = value;
}
public String resolveValue(ICBuildVariable var) {
return fValue + var.getFixed();
}
};
/**
* Create a new build variable with the given variable
* and fixed elements, and a static resolver that always
* returns the same value for the variable portion of
* the variable.
*
* @param name variable portion of build variable.
* @param fixed fixed portion of build variable.
* @param resolved resolved variable value.
*/
public CBuildVariable(String name, String fixed, String resolved) {
this(name, fixed, new StringResolver(resolved));
}
/**
* Create a new build variable with the given fixed
* and variable values, and a dynamic resolver for
* the variable portion of the variable.
*
* @param name variable portion of build variable.
* @param fixed fixed portion of build variable.
* @param resolved resolved variable value.
*/
public CBuildVariable(String name, String fixed, ICBuildVariableResolver resolver) {
fVariable = name;
fFixed = fixed;
fResolver = resolver;
}
/**
* Create a new build variable with the given fixed
* and variable values, and a dynamic resolver for
* the variable portion of the variable.
*
* @param name variable portion of build variable.
* @param fixed fixed portion of build variable.
* @param resolved resolved variable value.
*/
public CBuildVariable(String name, ICBuildVariable base) {
fVariable = name;
fFixed = base.getFixed();
fResolver = base.getResolver();
}
/**
* @see org.eclipse.cdt.core.builder.model.ICBuildVariable#getVariable()
*/
public String getVariable() {
return fVariable;
}
/**
* @see org.eclipse.cdt.core.builder.model.ICBuildVariable#getFixed()
*/
public String getFixed() {
return fFixed;
}
/**
* @see org.eclipse.cdt.core.builder.model.ICBuildVariable#getResolver()
*/
public ICBuildVariableResolver getResolver() {
return fResolver;
}
/**
* @see org.eclipse.cdt.core.builder.model.ICBuildVariable#getValue()
*/
public String getValue() {
return fResolver.resolveValue(this);
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
int result = 17;
result = (result * 37) + fVariable.hashCode();
result = (result * 37) + fFixed.hashCode();
return result;
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
public String toString() {
return "[" + fVariable + "]" + fFixed;
}
}
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