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JDK 17 java.base.jmod - Base Module
JDK 17 java.base.jmod is the JMOD file for JDK 17 Base module.
JDK 17 Base module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\java.base.jmod.
JDK 17 Base module compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.
JDK 17 Base module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\java.base.
You can click and view the content of each source code file in the list below.
✍: FYIcenter
⏎ jdk/internal/jimage/ImageLocation.java
/* * Copyright (c) 2014, 2021, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package jdk.internal.jimage; import java.nio.ByteBuffer; import java.util.Objects; /** * @implNote This class needs to maintain JDK 8 source compatibility. * * It is used internally in the JDK to implement jimage/jrtfs access, * but also compiled and delivered as part of the jrtfs.jar to support access * to the jimage file provided by the shipped JDK by tools running on JDK 8. */ public class ImageLocation { public static final int ATTRIBUTE_END = 0; public static final int ATTRIBUTE_MODULE = 1; public static final int ATTRIBUTE_PARENT = 2; public static final int ATTRIBUTE_BASE = 3; public static final int ATTRIBUTE_EXTENSION = 4; public static final int ATTRIBUTE_OFFSET = 5; public static final int ATTRIBUTE_COMPRESSED = 6; public static final int ATTRIBUTE_UNCOMPRESSED = 7; public static final int ATTRIBUTE_COUNT = 8; protected final long[] attributes; protected final ImageStrings strings; public ImageLocation(long[] attributes, ImageStrings strings) { this.attributes = Objects.requireNonNull(attributes); this.strings = Objects.requireNonNull(strings); } ImageStrings getStrings() { return strings; } static long[] decompress(ByteBuffer bytes, int offset) { Objects.requireNonNull(bytes); long[] attributes = new long[ATTRIBUTE_COUNT]; int limit = bytes.limit(); while (offset < limit) { int data = bytes.get(offset++) & 0xFF; if (data <= 0x7) { // ATTRIBUTE_END break; } int kind = data >>> 3; if (ATTRIBUTE_COUNT <= kind) { throw new InternalError( "Invalid jimage attribute kind: " + kind); } int length = (data & 0x7) + 1; attributes[kind] = readValue(length, bytes, offset, limit); offset += length; } return attributes; } public static byte[] compress(long[] attributes) { Objects.requireNonNull(attributes); ImageStream stream = new ImageStream(16); for (int kind = ATTRIBUTE_END + 1; kind < ATTRIBUTE_COUNT; kind++) { long value = attributes[kind]; if (value != 0) { int n = (63 - Long.numberOfLeadingZeros(value)) >> 3; stream.put((kind << 3) | n); for (int i = n; i >= 0; i--) { stream.put((int)(value >> (i << 3))); } } } stream.put(ATTRIBUTE_END << 3); return stream.toArray(); } public boolean verify(String name) { return verify(name, attributes, strings); } /** * A simpler verification would be {@code name.equals(getFullName())}, but * by not creating the full name and enabling early returns we allocate * fewer objects. */ static boolean verify(String name, long[] attributes, ImageStrings strings) { Objects.requireNonNull(name); final int length = name.length(); int index = 0; int moduleOffset = (int)attributes[ATTRIBUTE_MODULE]; if (moduleOffset != 0 && length >= 1) { int moduleLen = strings.match(moduleOffset, name, 1); index = moduleLen + 1; if (moduleLen < 0 || length <= index || name.charAt(0) != '/' || name.charAt(index++) != '/') { return false; } } return verifyName(null, name, index, length, 0, (int) attributes[ATTRIBUTE_PARENT], (int) attributes[ATTRIBUTE_BASE], (int) attributes[ATTRIBUTE_EXTENSION], strings); } static boolean verify(String module, String name, ByteBuffer locations, int locationOffset, ImageStrings strings) { int moduleOffset = 0; int parentOffset = 0; int baseOffset = 0; int extOffset = 0; int limit = locations.limit(); while (locationOffset < limit) { int data = locations.get(locationOffset++) & 0xFF; if (data <= 0x7) { // ATTRIBUTE_END break; } int kind = data >>> 3; if (ATTRIBUTE_COUNT <= kind) { throw new InternalError( "Invalid jimage attribute kind: " + kind); } int length = (data & 0x7) + 1; switch (kind) { case ATTRIBUTE_MODULE: moduleOffset = (int) readValue(length, locations, locationOffset, limit); break; case ATTRIBUTE_BASE: baseOffset = (int) readValue(length, locations, locationOffset, limit); break; case ATTRIBUTE_PARENT: parentOffset = (int) readValue(length, locations, locationOffset, limit); break; case ATTRIBUTE_EXTENSION: extOffset = (int) readValue(length, locations, locationOffset, limit); break; } locationOffset += length; } return verifyName(module, name, 0, name.length(), moduleOffset, parentOffset, baseOffset, extOffset, strings); } private static long readValue(int length, ByteBuffer buffer, int offset, int limit) { long value = 0; for (int j = 0; j < length; j++) { value <<= 8; if (offset >= limit) { throw new InternalError("Missing jimage attribute data"); } value |= buffer.get(offset++) & 0xFF; } return value; } static boolean verify(String module, String name, long[] attributes, ImageStrings strings) { Objects.requireNonNull(module); Objects.requireNonNull(name); return verifyName(module, name, 0, name.length(), (int) attributes[ATTRIBUTE_MODULE], (int) attributes[ATTRIBUTE_PARENT], (int) attributes[ATTRIBUTE_BASE], (int) attributes[ATTRIBUTE_EXTENSION], strings); } private static boolean verifyName(String module, String name, int index, int length, int moduleOffset, int parentOffset, int baseOffset, int extOffset, ImageStrings strings) { if (moduleOffset != 0) { if (strings.match(moduleOffset, module, 0) != module.length()) { return false; } } if (parentOffset != 0) { int parentLen = strings.match(parentOffset, name, index); if (parentLen < 0) { return false; } index += parentLen; if (length <= index || name.charAt(index++) != '/') { return false; } } int baseLen = strings.match(baseOffset, name, index); if (baseLen < 0) { return false; } index += baseLen; if (extOffset != 0) { if (length <= index || name.charAt(index++) != '.') { return false; } int extLen = strings.match(extOffset, name, index); if (extLen < 0) { return false; } index += extLen; } return length == index; } long getAttribute(int kind) { if (kind < ATTRIBUTE_END || ATTRIBUTE_COUNT <= kind) { throw new InternalError( "Invalid jimage attribute kind: " + kind); } return attributes[kind]; } String getAttributeString(int kind) { if (kind < ATTRIBUTE_END || ATTRIBUTE_COUNT <= kind) { throw new InternalError( "Invalid jimage attribute kind: " + kind); } return getStrings().get((int)attributes[kind]); } public String getModule() { return getAttributeString(ATTRIBUTE_MODULE); } public int getModuleOffset() { return (int)getAttribute(ATTRIBUTE_MODULE); } public String getBase() { return getAttributeString(ATTRIBUTE_BASE); } public int getBaseOffset() { return (int)getAttribute(ATTRIBUTE_BASE); } public String getParent() { return getAttributeString(ATTRIBUTE_PARENT); } public int getParentOffset() { return (int)getAttribute(ATTRIBUTE_PARENT); } public String getExtension() { return getAttributeString(ATTRIBUTE_EXTENSION); } public int getExtensionOffset() { return (int)getAttribute(ATTRIBUTE_EXTENSION); } public String getFullName() { return getFullName(false); } public String getFullName(boolean modulesPrefix) { StringBuilder builder = new StringBuilder(); if (getModuleOffset() != 0) { if (modulesPrefix) { builder.append("/modules"); } builder.append('/'); builder.append(getModule()); builder.append('/'); } if (getParentOffset() != 0) { builder.append(getParent()); builder.append('/'); } builder.append(getBase()); if (getExtensionOffset() != 0) { builder.append('.'); builder.append(getExtension()); } return builder.toString(); } String buildName(boolean includeModule, boolean includeParent, boolean includeName) { StringBuilder builder = new StringBuilder(); if (includeModule && getModuleOffset() != 0) { builder.append("/modules/"); builder.append(getModule()); } if (includeParent && getParentOffset() != 0) { builder.append('/'); builder.append(getParent()); } if (includeName) { if (includeModule || includeParent) { builder.append('/'); } builder.append(getBase()); if (getExtensionOffset() != 0) { builder.append('.'); builder.append(getExtension()); } } return builder.toString(); } public long getContentOffset() { return getAttribute(ATTRIBUTE_OFFSET); } public long getCompressedSize() { return getAttribute(ATTRIBUTE_COMPRESSED); } public long getUncompressedSize() { return getAttribute(ATTRIBUTE_UNCOMPRESSED); } static ImageLocation readFrom(BasicImageReader reader, int offset) { Objects.requireNonNull(reader); long[] attributes = reader.getAttributes(offset); ImageStringsReader strings = reader.getStrings(); return new ImageLocation(attributes, strings); } }
⏎ jdk/internal/jimage/ImageLocation.java
Or download all of them as a single archive file:
File name: java.base-17.0.5-src.zip File size: 8883851 bytes Release date: 2022-09-13 Download
2023-09-26, 69007👍, 1💬
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