JDK 11 jdk.jshell.jmod - JShell Tool

JDK 11 jdk.jshell.jmod is the JMOD file for JDK 11 JShell tool, which can be invoked by the "jshell" command.

JDK 11 JShell tool compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.jshell.jmod.

JDK 11 JShell tool compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 JShell tool source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.jshell.

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

✍: FYIcenter

jdk/jshell/MaskCommentsAndModifiers.java

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

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

    private final static Set<String> OTHER_MODIFIERS =
            Stream.of( "abstract", "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;

    // 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 openComment = false;

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

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

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

    boolean endsWithOpenComment() {
        return openComment;
    }

    /****** 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);
        }
    }

    private void next() {
        switch (c) {
            case '\'':
            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);
                        openComment = 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 && IGNORED_MODIFIERS.contains(id)) {
                        writeMask(sb);
                    } else {
                        write(sb);
                        if (maskModifiers && !OTHER_MODIFIERS.contains(id)) {
                            maskModifiers = false;
                        }
                    }
                } else {
                    if (!Character.isWhitespace(c)) {
                        maskModifiers = false;
                    }
                    write(c);
                }
                break;
        }
    }
}

jdk/jshell/MaskCommentsAndModifiers.java

 

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