langtools/src/jdk.jdeps/share/classes/com/sun/tools/javap/TypeAnnotationWriter.java
changeset 30846 2b3f379840f0
parent 25874 83c19f00452c
child 34752 9c262a013456
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/langtools/src/jdk.jdeps/share/classes/com/sun/tools/javap/TypeAnnotationWriter.java	Wed May 27 13:25:18 2015 -0700
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2009, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+package com.sun.tools.javap;
+
+import com.sun.tools.classfile.Attribute;
+import com.sun.tools.classfile.Code_attribute;
+import com.sun.tools.classfile.TypeAnnotation;
+import com.sun.tools.classfile.TypeAnnotation.Position;
+import com.sun.tools.classfile.Instruction;
+import com.sun.tools.classfile.Method;
+import com.sun.tools.classfile.RuntimeInvisibleTypeAnnotations_attribute;
+import com.sun.tools.classfile.RuntimeTypeAnnotations_attribute;
+import com.sun.tools.classfile.RuntimeVisibleTypeAnnotations_attribute;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import com.sun.tools.javac.util.StringUtils;
+
+/**
+ * Annotate instructions with details about type annotations.
+ *
+ *  <p><b>This is NOT part of any supported API.
+ *  If you write code that depends on this, you do so at your own risk.
+ *  This code and its internal interfaces are subject to change or
+ *  deletion without notice.</b>
+ */
+public class TypeAnnotationWriter extends InstructionDetailWriter {
+    public enum NoteKind { VISIBLE, INVISIBLE }
+
+    public static class Note {
+        Note(NoteKind kind, TypeAnnotation anno) {
+            this.kind = kind;
+            this.anno = anno;
+        }
+        public final NoteKind kind;
+        public final TypeAnnotation anno;
+    }
+
+    static TypeAnnotationWriter instance(Context context) {
+        TypeAnnotationWriter instance = context.get(TypeAnnotationWriter.class);
+        if (instance == null)
+            instance = new TypeAnnotationWriter(context);
+        return instance;
+    }
+
+    protected TypeAnnotationWriter(Context context) {
+        super(context);
+        context.put(TypeAnnotationWriter.class, this);
+        annotationWriter = AnnotationWriter.instance(context);
+        classWriter = ClassWriter.instance(context);
+    }
+
+    public void reset(Code_attribute attr) {
+        Method m = classWriter.getMethod();
+        pcMap = new HashMap<>();
+        check(NoteKind.VISIBLE, (RuntimeVisibleTypeAnnotations_attribute) m.attributes.get(Attribute.RuntimeVisibleTypeAnnotations));
+        check(NoteKind.INVISIBLE, (RuntimeInvisibleTypeAnnotations_attribute) m.attributes.get(Attribute.RuntimeInvisibleTypeAnnotations));
+    }
+
+    private void check(NoteKind kind, RuntimeTypeAnnotations_attribute attr) {
+        if (attr == null)
+            return;
+
+        for (TypeAnnotation anno: attr.annotations) {
+            Position p = anno.position;
+            Note note = null;
+            if (p.offset != -1)
+                addNote(p.offset, note = new Note(kind, anno));
+            if (p.lvarOffset != null) {
+                for (int i = 0; i < p.lvarOffset.length; i++) {
+                    if (note == null)
+                        note = new Note(kind, anno);
+                    addNote(p.lvarOffset[i], note);
+                }
+            }
+        }
+    }
+
+    private void addNote(int pc, Note note) {
+        List<Note> list = pcMap.get(pc);
+        if (list == null)
+            pcMap.put(pc, list = new ArrayList<>());
+        list.add(note);
+    }
+
+    @Override
+    void writeDetails(Instruction instr) {
+        String indent = space(2); // get from Options?
+        int pc = instr.getPC();
+        List<Note> notes = pcMap.get(pc);
+        if (notes != null) {
+            for (Note n: notes) {
+                print(indent);
+                print("@");
+                annotationWriter.write(n.anno, false, true);
+                print(", ");
+                println(StringUtils.toLowerCase(n.kind.toString()));
+            }
+        }
+    }
+
+    private AnnotationWriter annotationWriter;
+    private ClassWriter classWriter;
+    private Map<Integer, List<Note>> pcMap;
+}