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src/share/classes/com/sun/tools/javap/TypeAnnotationWriter.java@2eb010b6cb22 (annotated)

src/share/classes/com/sun/tools/javap/TypeAnnotationWriter.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 2413

fe033d997ddf

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	4	*
aoqi@0	5	* This code is free software; you can redistribute it and/or modify it
aoqi@0	6	* under the terms of the GNU General Public License version 2 only, as
aoqi@0	7	* published by the Free Software Foundation. Oracle designates this
aoqi@0	8	* particular file as subject to the "Classpath" exception as provided
aoqi@0	9	* by Oracle in the LICENSE file that accompanied this code.
aoqi@0	10	*
aoqi@0	11	* This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0	12	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0	13	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
aoqi@0	14	* version 2 for more details (a copy is included in the LICENSE file that
aoqi@0	15	* accompanied this code).
aoqi@0	16	*
aoqi@0	17	* You should have received a copy of the GNU General Public License version
aoqi@0	18	* 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0	19	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0	20	*
aoqi@0	21	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0	22	* or visit www.oracle.com if you need additional information or have any
aoqi@0	23	* questions.
aoqi@0	24	*/
aoqi@0	25	package com.sun.tools.javap;
aoqi@0	26
aoqi@0	27	import com.sun.tools.classfile.Attribute;
aoqi@0	28	import com.sun.tools.classfile.Code_attribute;
aoqi@0	29	import com.sun.tools.classfile.TypeAnnotation;
aoqi@0	30	import com.sun.tools.classfile.TypeAnnotation.Position;
aoqi@0	31	import com.sun.tools.classfile.Instruction;
aoqi@0	32	import com.sun.tools.classfile.Method;
aoqi@0	33	import com.sun.tools.classfile.RuntimeInvisibleTypeAnnotations_attribute;
aoqi@0	34	import com.sun.tools.classfile.RuntimeTypeAnnotations_attribute;
aoqi@0	35	import com.sun.tools.classfile.RuntimeVisibleTypeAnnotations_attribute;
aoqi@0	36	import java.util.ArrayList;
aoqi@0	37	import java.util.HashMap;
aoqi@0	38	import java.util.List;
aoqi@0	39	import java.util.Map;
aoqi@0	40	import com.sun.tools.javac.util.StringUtils;
aoqi@0	41
aoqi@0	42	/**
aoqi@0	43	* Annotate instructions with details about type annotations.
aoqi@0	44	*
aoqi@0	45	* <p><b>This is NOT part of any supported API.
aoqi@0	46	* If you write code that depends on this, you do so at your own risk.
aoqi@0	47	* This code and its internal interfaces are subject to change or
aoqi@0	48	* deletion without notice.</b>
aoqi@0	49	*/
aoqi@0	50	public class TypeAnnotationWriter extends InstructionDetailWriter {
aoqi@0	51	public enum NoteKind { VISIBLE, INVISIBLE };
aoqi@0	52	public static class Note {
aoqi@0	53	Note(NoteKind kind, TypeAnnotation anno) {
aoqi@0	54	this.kind = kind;
aoqi@0	55	this.anno = anno;
aoqi@0	56	}
aoqi@0	57	public final NoteKind kind;
aoqi@0	58	public final TypeAnnotation anno;
aoqi@0	59	}
aoqi@0	60
aoqi@0	61	static TypeAnnotationWriter instance(Context context) {
aoqi@0	62	TypeAnnotationWriter instance = context.get(TypeAnnotationWriter.class);
aoqi@0	63	if (instance == null)
aoqi@0	64	instance = new TypeAnnotationWriter(context);
aoqi@0	65	return instance;
aoqi@0	66	}
aoqi@0	67
aoqi@0	68	protected TypeAnnotationWriter(Context context) {
aoqi@0	69	super(context);
aoqi@0	70	context.put(TypeAnnotationWriter.class, this);
aoqi@0	71	annotationWriter = AnnotationWriter.instance(context);
aoqi@0	72	classWriter = ClassWriter.instance(context);
aoqi@0	73	}
aoqi@0	74
aoqi@0	75	public void reset(Code_attribute attr) {
aoqi@0	76	Method m = classWriter.getMethod();
aoqi@0	77	pcMap = new HashMap<Integer, List<Note>>();
aoqi@0	78	check(NoteKind.VISIBLE, (RuntimeVisibleTypeAnnotations_attribute) m.attributes.get(Attribute.RuntimeVisibleTypeAnnotations));
aoqi@0	79	check(NoteKind.INVISIBLE, (RuntimeInvisibleTypeAnnotations_attribute) m.attributes.get(Attribute.RuntimeInvisibleTypeAnnotations));
aoqi@0	80	}
aoqi@0	81
aoqi@0	82	private void check(NoteKind kind, RuntimeTypeAnnotations_attribute attr) {
aoqi@0	83	if (attr == null)
aoqi@0	84	return;
aoqi@0	85
aoqi@0	86	for (TypeAnnotation anno: attr.annotations) {
aoqi@0	87	Position p = anno.position;
aoqi@0	88	Note note = null;
aoqi@0	89	if (p.offset != -1)
aoqi@0	90	addNote(p.offset, note = new Note(kind, anno));
aoqi@0	91	if (p.lvarOffset != null) {
aoqi@0	92	for (int i = 0; i < p.lvarOffset.length; i++) {
aoqi@0	93	if (note == null)
aoqi@0	94	note = new Note(kind, anno);
aoqi@0	95	addNote(p.lvarOffset[i], note);
aoqi@0	96	}
aoqi@0	97	}
aoqi@0	98	}
aoqi@0	99	}
aoqi@0	100
aoqi@0	101	private void addNote(int pc, Note note) {
aoqi@0	102	List<Note> list = pcMap.get(pc);
aoqi@0	103	if (list == null)
aoqi@0	104	pcMap.put(pc, list = new ArrayList<Note>());
aoqi@0	105	list.add(note);
aoqi@0	106	}
aoqi@0	107
aoqi@0	108	@Override
aoqi@0	109	void writeDetails(Instruction instr) {
aoqi@0	110	String indent = space(2); // get from Options?
aoqi@0	111	int pc = instr.getPC();
aoqi@0	112	List<Note> notes = pcMap.get(pc);
aoqi@0	113	if (notes != null) {
aoqi@0	114	for (Note n: notes) {
aoqi@0	115	print(indent);
aoqi@0	116	print("@");
aoqi@0	117	annotationWriter.write(n.anno, false, true);
aoqi@0	118	print(", ");
aoqi@0	119	println(StringUtils.toLowerCase(n.kind.toString()));
aoqi@0	120	}
aoqi@0	121	}
aoqi@0	122	}
aoqi@0	123
aoqi@0	124	private AnnotationWriter annotationWriter;
aoqi@0	125	private ClassWriter classWriter;
aoqi@0	126	private Map<Integer, List<Note>> pcMap;
aoqi@0	127	}