KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > eclipse > jdt > internal > compiler > ast > Reference


1 /*******************************************************************************
2  * Copyright (c) 2000, 2006 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.jdt.internal.compiler.ast;
12
13 import org.eclipse.jdt.internal.compiler.codegen.*;
14 import org.eclipse.jdt.internal.compiler.flow.*;
15 import org.eclipse.jdt.internal.compiler.lookup.*;
16
17 public abstract class Reference extends Expression {
18 /**
19  * BaseLevelReference constructor comment.
20  */
21 public Reference() {
22     super();
23 }
24 public abstract FlowInfo analyseAssignment(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo, Assignment assignment, boolean isCompound);
25
26 public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) {
27     return flowInfo;
28 }
29 public FieldBinding fieldBinding() {
30     //this method should be sent one FIELD-tagged references
31 // (ref.bits & BindingIds.FIELD != 0)()
32 return null ;
33 }
34 public void fieldStore(CodeStream codeStream, FieldBinding fieldBinding, MethodBinding syntheticWriteAccessor, boolean valueRequired) {
35     int pc = codeStream.position;
36     if (fieldBinding.isStatic()) {
37         if (valueRequired) {
38             if ((fieldBinding.type == TypeBinding.LONG) || (fieldBinding.type == TypeBinding.DOUBLE)) {
39                 codeStream.dup2();
40             } else {
41                 codeStream.dup();
42             }
43         }
44         if (syntheticWriteAccessor == null) {
45             codeStream.putstatic(fieldBinding);
46         } else {
47             codeStream.invokestatic(syntheticWriteAccessor);
48         }
49     } else { // Stack: [owner][new field value] ---> [new field value][owner][new field value]
50 if (valueRequired) {
51             if ((fieldBinding.type == TypeBinding.LONG) || (fieldBinding.type == TypeBinding.DOUBLE)) {
52                 codeStream.dup2_x1();
53             } else {
54                 codeStream.dup_x1();
55             }
56         }
57         if (syntheticWriteAccessor == null) {
58             codeStream.putfield(fieldBinding);
59         } else {
60             codeStream.invokestatic(syntheticWriteAccessor);
61         }
62     }
63     codeStream.recordPositionsFrom(pc, this.sourceStart);
64 }
65 public abstract void generateAssignment(BlockScope currentScope, CodeStream codeStream, Assignment assignment, boolean valueRequired);
66
67 public abstract void generateCompoundAssignment(BlockScope currentScope, CodeStream codeStream, Expression expression, int operator, int assignmentImplicitConversion, boolean valueRequired);
68
69 public abstract void generatePostIncrement(BlockScope currentScope, CodeStream codeStream, CompoundAssignment postIncrement, boolean valueRequired);
70 }
71
Popular Tags