/*
* Copyright (c) 2003 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.
*
* You acknowledge that this software is not designed or intended for use
* in the design, construction, operation or maintenance of any nuclear
* facility.
*
* Sun gratefully acknowledges that this software was originally authored
* and developed by Kenneth Bradley Russell and Christopher John Kline.
*/
package com.jogamp.gluegen.cgram.types;
import com.jogamp.common.os.MachineDataInfo;
import com.jogamp.gluegen.cgram.types.TypeComparator.SemanticEqualityOp;
/** Represents a field in a struct or union. */
public class Field implements SemanticEqualityOp {
private final String name;
private final Type type;
private SizeThunk offset;
public Field(final String name, final Type type, final SizeThunk offset) {
this.name = name;
this.type = type;
this.offset = offset;
}
@Override
public int hashCode() {
// 31 * x == (x << 5) - x
final int hash = 31 + ( null != name ? name.hashCode() : 0 );
return ((hash << 5) - hash) + type.hashCode();
}
@Override
public boolean equals(final Object arg) {
if ( !(arg instanceof Field) ) {
return false;
}
final Field f = (Field) arg;
// Note: don't know how to examine offset any more since it's
// implemented in terms of code and they're not canonicalized
return ( ( name != null && name.equals(f.name) ) ||
( name == null && f.name == null )
) &&
type.equals(f.type);
}
@Override
public int hashCodeSemantics() {
return type.hashCodeSemantics();
}
@Override
public boolean equalSemantics(final SemanticEqualityOp arg) {
if ( !(arg instanceof Field) ) {
return false;
}
final Field f = (Field) arg;
// Note: don't know how to examine offset any more since it's
// implemented in terms of code and they're not canonicalized
return type.equalSemantics(f.type);
}
/** Name of this field in the containing data structure. */
public String getName() { return name; }
/** Type of this field. */
public Type getType() { return type; }
/** SizeThunk computing offset, in bytes, of this field in the containing data structure. */
public SizeThunk getOffset() { return offset; }
/** Offset, in bytes, of this field in the containing data structure
given the specified MachineDataInfo. */
public long getOffset(final MachineDataInfo machDesc) { return offset.computeSize(machDesc); }
/** Sets the offset of this field in the containing data structure. */
public void setOffset(final SizeThunk offset) { this.offset = offset; }
@Override
public String toString() {
if (!getType().isFunctionPointer()) {
if (getName() == null &&
getType().asCompound() != null &&
getType().asCompound().isUnion()) {
return "" + getType() + ";";
}
return "" + getType() + " " + getName() + ";";
} else {
final FunctionType ft = getType().asPointer().getTargetType().asFunction();
// FIXME: pick up calling convention?
return ft.toString(getName(), null, false, true) + ";";
}
}
}