JDK 17 jdk.compiler.jmod is the JMOD file for JDK 17 Compiler tool, which can be invoked by the "javac" command.

JDK 17 Compiler tool compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\jdk.compiler.jmod.

JDK 17 Compiler tool compiled class files are also linked and stored in the \fyicenter\jdk-17.0.5\lib\modules JImage file.

JDK 17 Compiler source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.compiler.

You can click and view the content of each source code file in the list below.

⏎ com/sun/tools/javac/jvm/PoolReader.java

/*
 * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
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 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package com.sun.tools.javac.jvm;

import com.sun.tools.javac.code.Symbol.ClassSymbol;
import com.sun.tools.javac.code.Symbol.ModuleSymbol;
import com.sun.tools.javac.code.Symbol.PackageSymbol;
import com.sun.tools.javac.code.Symtab;
import com.sun.tools.javac.code.Type;
import com.sun.tools.javac.jvm.PoolConstant.NameAndType;
import com.sun.tools.javac.util.ByteBuffer;
import com.sun.tools.javac.util.Name;
import com.sun.tools.javac.util.Name.NameMapper;
import com.sun.tools.javac.util.Names;

import java.util.Arrays;
import java.util.BitSet;

import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Class;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Double;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Dynamic;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Fieldref;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Float;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Integer;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_InterfaceMethodref;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_InvokeDynamic;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Long;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_MethodHandle;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Methodref;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_MethodType;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Module;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_NameandType;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Package;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_String;
import static com.sun.tools.javac.jvm.ClassFile.CONSTANT_Utf8;
import static com.sun.tools.javac.jvm.ClassFile.internalize;

/**
 * Pool interface towards {@code ClassReader}. Exposes methods to decode and read javac entities
 * from the constant pool.
 *
 *  <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 PoolReader {

    private final ClassReader reader;
    private final ByteBuffer buf;
    private final Names names;
    private final Symtab syms;

    private ImmutablePoolHelper pool;

    PoolReader(ByteBuffer buf) {
        this(null, buf, null, null);
    }

    PoolReader(ClassReader reader, Names names, Symtab syms) {
        this(reader, reader.buf, names, syms);
    }

    PoolReader(ClassReader reader, ByteBuffer buf, Names names, Symtab syms) {
        this.reader = reader;
        this.buf = buf;
        this.names = names;
        this.syms = syms;
    }

    private static final BitSet classCP = new BitSet();
    private static final BitSet constantCP = new BitSet();
    private static final BitSet moduleCP = new BitSet();
    private static final BitSet packageCP = new BitSet();
    private static final BitSet utf8CP = new BitSet();
    private static final BitSet nameAndTypeCP = new BitSet();

    static {
        classCP.set(CONSTANT_Class);
        constantCP.set(CONSTANT_Integer, CONSTANT_String + 1); // the toIndex is exclusive
        moduleCP.set(CONSTANT_Module);
        packageCP.set(CONSTANT_Package);
        utf8CP.set(CONSTANT_Utf8);
        nameAndTypeCP.set(CONSTANT_NameandType);
    }

    /**
     * Get a class symbol from the pool at given index.
     */
    ClassSymbol getClass(int index) {
        return pool.readIfNeeded(index, classCP);
    }

    /**
     * Get class name without resolving
     */
    <Z> Z peekClassName(int index, NameMapper<Z> mapper) {
        return peekName(buf.getChar(pool.offset(index)), mapper);
    }

    /**
     * Get package name without resolving
     */
    <Z> Z peekPackageName(int index, NameMapper<Z> mapper) {
        return peekName(buf.getChar(pool.offset(index)), mapper);
    }

    /**
     * Get module name without resolving
     */
    <Z> Z peekModuleName(int index, NameMapper<Z> mapper) {
        return peekName(buf.getChar(pool.offset(index)), mapper);
    }

    /**
     * Get a module symbol from the pool at given index.
     */
    ModuleSymbol getModule(int index) {
        return pool.readIfNeeded(index, moduleCP);
    }

    /**
     * Get a module symbol from the pool at given index.
     */
    PackageSymbol getPackage(int index) {
        return pool.readIfNeeded(index, packageCP);
    }

    /**
     * Peek a name from the pool at given index without resolving.
     */
    <Z> Z peekName(int index, Name.NameMapper<Z> mapper) {
        return getUtf8(index, mapper);
    }

    /**
     * Get a name from the pool at given index.
     */
    Name getName(int index) {
        return pool.readIfNeeded(index, utf8CP);
    }

    /**
     * Get a type from the pool at given index.
     */
    Type getType(int index) {
        return getName(index).map(reader::sigToType);
    }

    /**
     * Get a name and type pair from the pool at given index.
     */
    NameAndType getNameAndType(int index) {
        return pool.readIfNeeded(index, nameAndTypeCP);
    }

    /**
     * Get a class symbol from the pool at given index.
     */
    Object getConstant(int index) {
        return pool.readIfNeeded(index, constantCP);
    }

    boolean hasTag(int index, int tag) {
        return pool.tag(index) == tag;
    }

    private <Z> Z getUtf8(int index, NameMapper<Z> mapper) {
        int tag = pool.tag(index);
        int offset = pool.offset(index);
        if (tag == CONSTANT_Utf8) {
            int len = pool.poolbuf.getChar(offset);
            return mapper.map(pool.poolbuf.elems, offset + 2, len);
        } else {
            throw reader.badClassFile("unexpected.const.pool.tag.at",
                                Integer.toString(tag),
                                Integer.toString(offset - 1));
        }
    }

    private Object resolve(ByteBuffer poolbuf, int tag, int offset) {
        switch (tag) {
            case CONSTANT_Utf8: {
                int len = poolbuf.getChar(offset);
                return names.fromUtf(poolbuf.elems, offset + 2, len);
            }
            case CONSTANT_Class: {
                int index = poolbuf.getChar(offset);
                Name name = names.fromUtf(getName(index).map(ClassFile::internalize));
                return syms.enterClass(reader.currentModule, name);
            }
            case CONSTANT_NameandType: {
                Name name = getName(poolbuf.getChar(offset));
                Type type = getType(poolbuf.getChar(offset + 2));
                return new NameAndType(name, type);
            }
            case CONSTANT_Integer:
                return poolbuf.getInt(offset);
            case CONSTANT_Float:
                return poolbuf.getFloat(offset);
            case CONSTANT_Long:
                return poolbuf.getLong(offset);
            case CONSTANT_Double:
                return poolbuf.getDouble(offset);
            case CONSTANT_String:
                return getName(poolbuf.getChar(offset)).toString();
            case CONSTANT_Package: {
                Name name = getName(poolbuf.getChar(offset));
                return syms.enterPackage(reader.currentModule, names.fromUtf(internalize(name)));
            }
            case CONSTANT_Module: {
                Name name = getName(poolbuf.getChar(offset));
                return syms.enterModule(name);
            }
            default:
                throw reader.badClassFile("unexpected.const.pool.tag.at",
                        Integer.toString(tag),
                        Integer.toString(offset - 1));
        }
    }

    /**
     * Parse all constant pool entries, and keep track of their offsets. For performance and laziness
     * reasons, it would be unwise to eagerly turn all pool entries into corresponding javac
     * entities. First, not all entries are actually going to be read/used by javac; secondly,
     * there are cases where creating a symbol too early might result in issues (hence methods like
     * {@link PoolReader#peekClassName(int, NameMapper)}.
     */
    int readPool(ByteBuffer poolbuf, int offset) {
        int poolSize = poolbuf.getChar(offset);
        int index = 1;
        offset += 2;
        int[] offsets = new int[poolSize];
        while (index < poolSize) {
            byte tag = poolbuf.getByte(offset++);
            offsets[index] = offset;
            switch (tag) {
                case CONSTANT_Utf8: {
                    int len = poolbuf.getChar(offset);
                    offset += 2 + len;
                    break;
                }
                case CONSTANT_Class:
                case CONSTANT_String:
                case CONSTANT_Module:
                case CONSTANT_Package:
                case CONSTANT_MethodType:
                    offset += 2;
                    break;
                case CONSTANT_MethodHandle:
                    offset += 3;
                    break;
                case CONSTANT_Fieldref:
                case CONSTANT_Methodref:
                case CONSTANT_InterfaceMethodref:
                case CONSTANT_NameandType:
                case CONSTANT_Integer:
                case CONSTANT_Float:
                case CONSTANT_Dynamic:
                case CONSTANT_InvokeDynamic:
                    offset += 4;
                    break;
                case CONSTANT_Long:
                case CONSTANT_Double:
                    offset += 8;
                    break;
                default:
                    throw reader.badClassFile("bad.const.pool.tag.at",
                            Byte.toString(tag),
                            Integer.toString(offset - 1));
            }
            index += sizeof(tag);
        }
        pool = new ImmutablePoolHelper(poolbuf, offsets);
        return offset;
    }

    private int sizeof(int tag) {
        switch (tag) {
            case ClassFile.CONSTANT_Double: case ClassFile.CONSTANT_Long:
                return 2;
            default:
                return 1;
        }
    }

    class ImmutablePoolHelper {

        final Object[] values;
        final int[] offsets;
        final ByteBuffer poolbuf;

        public ImmutablePoolHelper(ByteBuffer poolbuf, int[] offsets) {
            this.offsets = offsets;
            this.values = new Object[offsets.length];
            this.poolbuf = poolbuf;
        }

        private int checkIndex(int index) {
            if (index <= 0 || index >= offsets.length) {
                //pool index is outside valid range.
                throw reader.badClassFile("bad.const.pool.index", reader.currentClassFile,
                        index, offsets.length);
            } else {
                return index;
            }
        }

        int offset(int index) {
            return offsets[checkIndex(index)];
        }

        @SuppressWarnings("unchecked")
        <P> P readIfNeeded(int index, BitSet expectedTags) {
            Object v = values[checkIndex(index)];
            if (v != null) {
                return (P)v;
            } else {
                int currentTag = tag(index);
                if (!expectedTags.get(currentTag)) {
                    throw reader.badClassFile("unexpected.const.pool.tag.at", tag(index), offset(index));
                }
                P p = (P)resolve(poolbuf, tag(index), offset(index));
                values[index] = p;
                return p;
            }
        }

        int tag(int index) {
            return poolbuf.elems[offset(index) - 1];
        }
    }
}

⏎ com/sun/tools/javac/jvm/PoolReader.java

Or download all of them as a single archive file:

File name: jdk.compiler-17.0.5-src.zip
File size: 1450209 bytes
Release date: 2022-09-13
Download 

⇒ JDK 17 jdk.crypto.cryptoki.jmod - Crypto KI Module

⇐ JDK 17 jdk.charsets.jmod - Charsets Module

⇑ JDK 17 JMod/Module Files

⇑⇑ FAQ for JDK (Java Development Kit) 17