/*
 *    EVMClass.java    1.10    99/05/11    SMI
 *
 * Copyright © 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package vm;

/*
 * EVM-specific internal representation of
 * a class. Target-machine independent.
 * There is a references from each instance of components.ClassInfo to 
 * one of these, and a reference back as well.
 * Derived from the JDK-specific ClassClass
 *
 * !!See also EVMVM for VM-specific info not associated directly with a class.
 */
import components.*;
import util.*;
import vm.Const;
import vm.EVMConst;
import java.util.Enumeration;
import java.util.Vector;
import java.util.Hashtable;
import java.util.StringTokenizer;

public class
EVMClass extends ClassClass implements Const, EVMConst {
    public EVMMethodInfo    methods[];
    private String        myNativeName;
    protected int        typeCode = 0;

    public int            nStaticWords;
    public int            nStaticRef;
    public FieldInfo        statics[];

    public EVMClass( ClassInfo c ){
    ci = c;
    c.vmClass = this;

    if ( c.methods != null ){
        // per-method, EVM-specific info.
        methods = new EVMMethodInfo[ c.methods.length ];
        for( int i = 0; i < methods.length; i++ ){
        components.MethodInfo m = c.methods[i];
        methods[i] = new EVMMethodInfo( m );
        if (!hasStaticInitializer &&
            m.isStaticMember() &&
            m.name.string.equals(/*NOI18N*/"<clinit>")) {
            hasStaticInitializer = true;
        }
        }
    }
    }

    public String getNativeName(){
    if ( myNativeName == null ){
        if ( ci instanceof ArrayClassInfo ){
        ArrayClassInfo aci = (ArrayClassInfo)ci;
        if (aci.depth == 1) {
            /*
             * There are some special arrays of well-known basic
             * types here.
             */
            if (aci.baseClass == null) {
            myNativeName = "manufacturedArrayOf"+
                aci.baseName;
            } else if (aci.baseClass.find().superClassInfo == null) {
            myNativeName = "manufacturedArrayOfObject";
            } else {
                myNativeName = "manufacturedArrayClass"+
                aci.arrayClassNumber;
            }
        } else {
            myNativeName = "manufacturedArrayClass"+
            aci.arrayClassNumber;
        }
        } else {
        myNativeName = ci.getGenericNativeName();
        }
    }
    return myNativeName;
    }

    public int
    EVMflags(){
    int flagval = 0;
    int a = ci.access;
    if ( (a&ACC_PUBLIC) != 0 ) flagval |= EVM_CLASS_ACC_PUBLIC;
    if ( (a&ACC_FINAL) != 0 ) flagval |= EVM_CLASS_ACC_FINAL;
    if ( (a&ACC_SUPER) != 0 ) flagval |= EVM_CLASS_ACC_SUPER;
    if ( (a&ACC_INTERFACE) != 0 ) flagval |= EVM_CLASS_ACC_INTERFACE;
    if ( (a&ACC_ABSTRACT) != 0 ) flagval |= EVM_CLASS_ACC_ABSTRACT;
    return flagval;

    }

    public int
    typecode(){
    return typeCode;
    }

    public void orderStatics(){
    // count statics.
    // arranged them ref-first
    // do not assign offsets.
    FieldInfo f[] = ci.fields;
    nStaticWords = 0;
    if ( (f == null) || (f.length == 0 ) ) return; // nothing to do.
    int nFields = f.length;
    int nStatic = 0;
    int nRef = 0;
    for ( int i = 0; i < nFields; i++ ){
        FieldInfo fld = f[i];
        if ( fld.isStaticMember() ){
        nStatic += 1;
        char toptype =  fld.type.string.charAt(0);
        if ( (toptype == 'L') || (toptype=='['))
            nRef += 1;
        }
    }
    int refOff     = 0;
    int scalarOff = nRef;
    int totalStaticWords = nRef;
    statics = new FieldInfo[ nStatic ];
    for ( int i = 0; i < nFields; i++ ){
        FieldInfo fld = f[i];
        if ( fld.isStaticMember() ){
        char toptype =  fld.type.string.charAt(0);
        if ( (toptype == 'L') || (toptype=='[')){
            statics[refOff] = fld;
            refOff += 1;
        } else {
            statics[scalarOff] = fld;
            scalarOff += 1;
            totalStaticWords += fld.nSlots;
        }
        }
    }
    nStaticWords = totalStaticWords;
    nStaticRef   = nRef;
    }

}