1 cananian 1.1.2.1 // PFCONST.java, created Wed Jan 20 21:47:52 1999 by cananian 2 cananian 1.1.2.1 // Copyright (C) 1999 C. Scott Ananian <cananian@alumni.princeton.edu> 3 cananian 1.1.2.1 // Licensed under the terms of the GNU GPL; see COPYING for details. 4 cananian 1.1.2.1 package harpoon.IR.LowQuad; 5 cananian 1.1.2.1 6 cananian 1.1.2.1 import harpoon.ClassFile.HCodeElement; 7 cananian 1.1.2.1 import harpoon.ClassFile.HField; 8 cananian 1.1.2.1 import harpoon.Temp.Temp; 9 cananian 1.1.2.1 import harpoon.Temp.TempMap; 10 cananian 1.1.2.1 import harpoon.Util.Util; 11 cananian 1.1.2.1 12 cananian 1.1.2.1 /** 13 cananian 1.1.2.1 * <code>PFCONST</code> computes the <code>POINTER</code> constant 14 cananian 1.1.2.1 * needed to access a given <b>static</b> field. <code>PFIELD</code> and 15 cananian 1.1.2.1 * <code>PFOFFSET</code> must be used together to access a non-static field. 16 cananian 1.1.2.1 * 17 cananian 1.1.2.1 * @author C. Scott Ananian <cananian@alumni.princeton.edu> 18 cananian 1.5 * @version $Id: PFCONST.java,v 1.5 2002/04/11 04:00:21 cananian Exp $ 19 cananian 1.1.2.1 */ 20 cananian 1.1.2.1 public class PFCONST extends PCONST { 21 cananian 1.1.2.1 /** The <code>HField</code> to address. */ 22 cananian 1.1.2.1 protected final HField field; 23 cananian 1.1.2.1 24 cananian 1.1.2.1 /** Creates a <code>PFCONST</code> representing the <code>POINTER</code> 25 cananian 1.1.2.1 * constant needed to access a given <b>static</b> field. 26 cananian 1.1.2.1 * @param dst 27 cananian 1.1.2.1 * the <code>Temp</code> in which to store the computed 28 cananian 1.1.2.1 * <code>POINTER</code> constant. 29 cananian 1.1.2.1 * @param field 30 cananian 1.1.2.1 * the <code>HField</code> whose <code>POINTER</code> constant 31 cananian 1.1.2.1 * to compute. 32 cananian 1.1.2.1 */ 33 cananian 1.1.2.1 public PFCONST(LowQuadFactory qf, HCodeElement source, 34 cananian 1.1.2.1 final Temp dst, final HField field) { 35 cananian 1.1.2.1 super(qf, source, dst); 36 cananian 1.1.2.1 this.field = field; 37 cananian 1.3.2.1 assert field!=null && field.isStatic(); 38 cananian 1.1.2.1 } 39 cananian 1.1.2.1 // ACCESSOR METHODS: 40 cananian 1.1.2.1 /** Returns the field whose <code>POINTER</code> constant is computed. */ 41 cananian 1.1.2.1 public HField field() { return field; } 42 cananian 1.1.2.1 43 cananian 1.1.2.1 public int kind() { return LowQuadKind.PFCONST; } 44 cananian 1.1.2.1 45 cananian 1.1.2.1 public harpoon.IR.Quads.Quad rename(harpoon.IR.Quads.QuadFactory qf, 46 cananian 1.1.2.1 TempMap defMap, TempMap useMap) { 47 cananian 1.1.2.1 return new PFCONST((LowQuadFactory)qf, this, 48 cananian 1.1.2.1 map(defMap, dst), field); 49 cananian 1.1.2.1 } 50 cananian 1.1.2.1 51 cananian 1.1.2.2 void accept(LowQuadVisitor v) { v.visit(this); } 52 cananian 1.5 <T> T accept(LowQuadValueVisitor<T> v) { return v.visit(this); } 53 cananian 1.1.2.1 54 cananian 1.1.2.1 public String toString() { 55 cananian 1.1.2.1 return dst.toString() + " = PFCONST " + 56 cananian 1.1.2.1 field.getDeclaringClass().getName() + "." + field.getName(); 57 cananian 1.1.2.1 } 58 cananian 1.2 }