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/*
* Copyright (c) 2008 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
* ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
* DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
* SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
*
*/
package com.jogamp.gluegen;
import com.jogamp.gluegen.cgram.types.AliasedSymbol.AliasedSymbolImpl;
import com.jogamp.gluegen.cgram.types.TypeComparator.AliasedSemanticSymbol;
import com.jogamp.gluegen.cgram.types.TypeComparator.SemanticEqualityOp;
/** Represents the definition of a constant which was provided either
via a #define statement or through an enum definition. */
public class ConstantDefinition extends AliasedSymbolImpl implements AliasedSemanticSymbol {
private final boolean relaxedEqSem;
private final String sValue;
private final long iValue;
private final boolean hasIntValue;
private final boolean isEnum;
private final String enumName;
/** Covering enums */
public ConstantDefinition(final String name,
final long value,
final String enumName) {
super(name);
this.relaxedEqSem = TypeConfig.relaxedEqualSemanticsTest();
this.sValue = String.valueOf(value);
this.iValue = value;
this.hasIntValue = true;
this.isEnum = true;
this.enumName = enumName;
}
/** Covering defines */
public ConstantDefinition(final String name,
final String value) {
super(name);
this.relaxedEqSem = TypeConfig.relaxedEqualSemanticsTest();
this.sValue = value;
{
// Attempt to parse define string as number
long v;
boolean b;
try {
v = Long.decode(value).longValue();
b = true;
} catch (final NumberFormatException e) {
v = 0;
b = false;
}
this.iValue = v;
this.hasIntValue = b;
}
this.isEnum = false;
this.enumName = null;
}
/**
* Hash by its given {@link #getName() name}.
*/
@Override
public final int hashCode() {
return getName().hashCode();
}
/**
* Equality test by its given {@link #getName() name}.
*/
@Override
public final boolean equals(final Object arg) {
if (arg == this) {
return true;
} else if ( !(arg instanceof ConstantDefinition) ) {
return false;
} else {
final ConstantDefinition t = (ConstantDefinition)arg;
return equals(getName(), t.getName());
}
}
@Override
public final int hashCodeSemantics() {
// 31 * x == (x << 5) - x
int hash = 31 + ( null != getName() ? getName().hashCode() : 0 );
hash = ((hash << 5) - hash) + ( null != sValue ? sValue.hashCode() : 0 );
return ((hash << 5) - hash) + ( null != enumName ? enumName.hashCode() : 0 );
}
@Override
public final boolean equalSemantics(final SemanticEqualityOp arg) {
if (arg == this) {
return true;
} else if ( !(arg instanceof ConstantDefinition) ) {
return false;
} else {
final ConstantDefinition t = (ConstantDefinition) arg;
if( !equals(getName(), t.getName()) ||
!equals(enumName, t.enumName) ) {
return false;
}
if( hasIntValue ) {
return iValue == t.iValue;
} else {
// define's string value may be semantical equal .. but formatted differently!
return relaxedEqSem || equals(sValue, t.sValue);
}
}
}
public String getValue() { return sValue; }
/** Returns null if this definition was not part of an
enumeration, or if the enum was anonymous. */
public String getEnumName() { return enumName; }
public boolean isEnum() { return isEnum; }
@Override
public String toString() {
return "ConstantDefinition [name " + getName()
+ ", value " + sValue + " (isInt " + hasIntValue
+ "), enumName " + enumName + ", isEnum " + isEnum + "]";
}
private static boolean equals(final String s1, final String s2) {
if (s1 == null || s2 == null) {
if (s1 == null && s2 == null) {
return true;
}
return false;
}
return s1.equals(s2);
}
}
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