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// Copyright (c) 2016, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package com.android.tools.r8.dex;
/**
* A section as defined by the Dex file format.
*/
public class DexSection {
public final int type;
public final int length;
public final int offset;
private int end;
public DexSection(int type, int unused, int length, int offset) {
this.type = type;
assert unused == 0;
this.length = length;
this.offset = offset;
this.end = -1;
}
void setEnd(int end) {
this.end = end;
}
// Returns the byte size of this section.
public int size() {
return end - offset;
}
public String typeName() {
return typeName(this.type);
}
public static String typeName(int type) {
// Type names are in UpperCamelCase because they're used as labels in
// benchmarks.
switch (type) {
case Constants.TYPE_HEADER_ITEM:
return "Header";
case Constants.TYPE_STRING_ID_ITEM:
return "Strings";
case Constants.TYPE_TYPE_ID_ITEM:
return "Types";
case Constants.TYPE_PROTO_ID_ITEM:
return "Protos";
case Constants.TYPE_FIELD_ID_ITEM:
return "Fields";
case Constants.TYPE_METHOD_ID_ITEM:
return "Methods";
case Constants.TYPE_CLASS_DEF_ITEM:
return "ClassDefs";
case Constants.TYPE_MAP_LIST:
return "Maps";
case Constants.TYPE_TYPE_LIST:
return "TypeLists";
case Constants.TYPE_ANNOTATION_SET_REF_LIST:
return "AnnotationSetRefs";
case Constants.TYPE_ANNOTATION_SET_ITEM:
return "AnnotationSets";
case Constants.TYPE_CLASS_DATA_ITEM:
return "ClassData";
case Constants.TYPE_CODE_ITEM:
return "Code";
case Constants.TYPE_STRING_DATA_ITEM:
return "StringData";
case Constants.TYPE_DEBUG_INFO_ITEM:
return "DebugInfo";
case Constants.TYPE_ANNOTATION_ITEM:
return "Annotation";
case Constants.TYPE_ENCODED_ARRAY_ITEM:
return "EncodedArrays";
case Constants.TYPE_ANNOTATIONS_DIRECTORY_ITEM:
return "AnnotationsDirectory";
default:
return "Unknown";
}
}
@Override
public String toString() {
return typeName() + " @" + offset + " " + length;
}
}