JDK 17 jdk.jshell.jmod is the JMOD file for JDK 17 JShell tool, which can be invoked by the "jshell" command.

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

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

JDK 17 JShell tool source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\jdk.jshell.

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

⏎ jdk/jshell/MaskCommentsAndModifiers.java

/*
 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package jdk.jshell;

import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * Within a String, mask code comments and ignored modifiers (within context).
 *
 * @author Robert Field
 */
class MaskCommentsAndModifiers {

    private static final Set<String> IGNORED_MODIFIERS =
            Stream.of( "public", "protected", "private", "static" )
                    .collect( Collectors.toSet() );

    private static final Set<String> ALL_MODIFIERS =
            Stream.of(
                    "public", "protected", "private",
                    "static", "abstract", "final",
                    "strictfp", "transient", "volatile", "synchronized", "native", "default" )
                    .collect( Collectors.toSet() );

    // Builder to accumulate non-masked characters
    private final StringBuilder sbCleared = new StringBuilder();

    // Builder to accumulate masked characters
    private final StringBuilder sbMask = new StringBuilder();

    // The input string
    private final String str;

    // Entire input string length
    private final int length;

    // Which modifiers to mask-out
    private final Set<String> ignoredModifiers;

    // The next character position
    private int next = 0;

    // The current character
    private int c;

    // Do we mask-off ignored modifiers?  Set by parameter and turned off after
    // initial modifier section
    private boolean maskModifiers;

    // Does the string end with an unclosed '/*' style comment?
    private boolean openToken = false;

    MaskCommentsAndModifiers(String s, boolean maskModifiers) {
        this(s, maskModifiers, IGNORED_MODIFIERS);
    }

    MaskCommentsAndModifiers(String s, Set<String> ignoredModifiers) {
        this(s, true, ignoredModifiers);
    }

    MaskCommentsAndModifiers(String s, boolean maskModifiers, Set<String> ignoredModifiers) {
        this.str = s;
        this.length = s.length();
        this.maskModifiers = maskModifiers;
        this.ignoredModifiers = ignoredModifiers;
        read();
        while (c >= 0) {
            next();
            read();
        }
    }

    String cleared() {
        return sbCleared.toString();
    }

    String mask() {
        return sbMask.toString();
    }

    boolean endsWithOpenToken() {
        return openToken;
    }

    /****** private implementation methods ******/

    /**
     * Read the next character
     */
    private int read() {
        return c = (next >= length)
                ? -1
                : str.charAt(next++);
    }

    private void unread() {
        if (c >= 0) {
            --next;
        }
    }

    private void writeTo(StringBuilder sb, int ch) {
        sb.append((char)ch);
    }

    private void write(int ch) {
        if (ch != -1) {
            writeTo(sbCleared, ch);
            writeTo(sbMask, Character.isWhitespace(ch) ? ch : ' ');
        }
    }

    private void writeMask(int ch) {
        if (ch != -1) {
            writeTo(sbMask, ch);
            writeTo(sbCleared, Character.isWhitespace(ch) ? ch : ' ');
        }
    }

    private void write(CharSequence s) {
        for (int cp : s.chars().toArray()) {
            write(cp);
        }
    }

    private void writeMask(CharSequence s) {
        for (int cp : s.chars().toArray()) {
            writeMask(cp);
        }
    }

    @SuppressWarnings("fallthrough")
    private void next() {
        switch (c) {
            case '"': {
                int pos = next - 1;
                maskModifiers = false;
                if (str.startsWith("\"\"\"", next - 1)) {
                    //text block/multi-line string literal:
                    int searchPoint = next + 2;
                    int end;
                    while ((end = str.indexOf("\"\"\"", searchPoint)) != (-1)) {
                        if (str.charAt(end - 1) != '\\')
                            break;
                        searchPoint = end + 1;
                    }
                    if (end == (-1)) {
                        openToken = true;
                        end = str.length();
                    } else {
                        end += 3;
                    }
                    write(c);
                    while (next < end) {
                        write(read());
                    }
                    break;
                }
            }
            //intentional fall-through:
            case '\'': {
                maskModifiers = false;
                write(c);
                int match = c;
                while (read() >= 0 && c != match && c != '\n' && c != '\r') {
                    write(c);
                    if (c == '\\') {
                        write(read());
                    }
                }
                write(c); // write match // line-end
                break;
            }
            case '/':
                read();
                switch (c) {
                    case '*':
                        writeMask('/');
                        writeMask(c);
                        int prevc = 0;
                        while (read() >= 0 && (c != '/' || prevc != '*')) {
                            writeMask(c);
                            prevc = c;
                        }
                        writeMask(c);
                        openToken = c < 0;
                        break;
                    case '/':
                        writeMask('/');
                        writeMask(c);
                        while (read() >= 0 && c != '\n' && c != '\r') {
                            writeMask(c);
                        }
                        writeMask(c);
                        break;
                    default:
                        maskModifiers = false;
                        write('/');
                        unread();
                        break;
                }
                break;
            case '@':
                do {
                    write(c);
                    read();
                } while (Character.isJavaIdentifierPart(c));
                while (Character.isWhitespace(c)) {
                    write(c);
                    read();
                }
                // if this is an annotation with arguments, process those recursively
                if (c == '(') {
                    write(c);
                    boolean prevMaskModifiers = maskModifiers;
                    int parenCnt = 1;
                    while (read() >= 0) {
                        if (c == ')') {
                            if (--parenCnt == 0) {
                                break;
                            }
                        } else if (c == '(') {
                            ++parenCnt;
                        }
                        next(); // recurse to handle quotes and comments
                    }
                    write(c);
                    // stuff in annotation arguments doesn't effect inside determination
                    maskModifiers = prevMaskModifiers;
                } else {
                    unread();
                }
                break;
            default:
                if (Character.isJavaIdentifierStart(c)) {
                    StringBuilder sb = new StringBuilder();
                    do {
                        writeTo(sb, c);
                        read();
                    } while (Character.isJavaIdentifierPart(c));
                    unread();
                    String id = sb.toString();
                    if (maskModifiers && ignoredModifiers.contains(id)) {
                        writeMask(sb);
                    } else {
                        write(sb);
                        if (maskModifiers && !ALL_MODIFIERS.contains(id)) {
                            maskModifiers = false;
                        }
                    }
                } else {
                    if (!Character.isWhitespace(c)) {
                        maskModifiers = false;
                    }
                    write(c);
                }
                break;
        }
    }
}

⏎ jdk/jshell/MaskCommentsAndModifiers.java

Or download all of them as a single archive file:

File name: jdk.jshell-17.0.5-src.zip
File size: 302589 bytes
Release date: 2022-09-13
Download 

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