Java Utf8Entry类代码示例

import com.sun.java.util.jar.pack.ConstantPool.Utf8Entry; //导入依赖的package包/类
void readLocalInnerClasses(Class cls) throws IOException {
    int nc = class_InnerClasses_N.getInt();
    List<InnerClass> localICs = new ArrayList<>(nc);
    for (int i = 0; i < nc; i++) {
        ClassEntry thisClass = (ClassEntry) class_InnerClasses_RC.getRef();
        int        flags     =              class_InnerClasses_F.getInt();
        if (flags == 0) {
            // A zero flag means copy a global IC here.
            InnerClass ic = pkg.getGlobalInnerClass(thisClass);
            assert(ic != null);  // must be a valid global IC reference
            localICs.add(ic);
        } else {
            if (flags == ACC_IC_LONG_FORM)
                flags = 0;  // clear the marker bit
            ClassEntry outer = (ClassEntry) class_InnerClasses_outer_RCN.getRef();
            Utf8Entry name   = (Utf8Entry)  class_InnerClasses_name_RUN.getRef();
            localICs.add(new InnerClass(thisClass, outer, name, flags));
        }
    }
    cls.setInnerClasses(localICs);
    // cls.expandLocalICs may add more tuples to ics also,
    // or may even delete tuples.
    // We cannot do that now, because we do not know the
    // full contents of the local constant pool yet.
}
 

import com.sun.java.util.jar.pack.ConstantPool.Utf8Entry; //导入依赖的package包/类
private void transformSourceFile(boolean minimize) {
    // Replace "obvious" SourceFile by null.
    Attribute olda = getAttribute(attrSourceFileSpecial);
    if (olda == null)
        return;  // no SourceFile attr.
    String obvious = getObviousSourceFile();
    List<Entry> ref = new ArrayList<>(1);
    olda.visitRefs(this, VRM_PACKAGE, ref);
    Utf8Entry sfName = (Utf8Entry) ref.get(0);
    Attribute a = olda;
    if (sfName == null) {
        if (minimize) {
            // A pair of zero bytes.  Cannot use predef. layout.
            a = Attribute.find(ATTR_CONTEXT_CLASS, "SourceFile", "H");
            a = a.addContent(new byte[2]);
        } else {
            // Expand null attribute to the obvious string.
            byte[] bytes = new byte[2];
            sfName = getRefString(obvious);
            Object f = null;
            f = Fixups.addRefWithBytes(f, bytes, sfName);
            a = attrSourceFileSpecial.addContent(bytes, f);
        }
    } else if (obvious.equals(sfName.stringValue())) {
        if (minimize) {
            // Replace by an all-zero attribute.
            a = attrSourceFileSpecial.addContent(new byte[2]);
        } else {
            assert(false);
        }
    }
    if (a != olda) {
        if (verbose > 2)
            Utils.log.fine("recoding obvious SourceFile="+obvious);
        List<Attribute> newAttrs = new ArrayList<>(getAttributes());
        int where = newAttrs.indexOf(olda);
        newAttrs.set(where, a);
        setAttributes(newAttrs);
    }
}
 

import com.sun.java.util.jar.pack.ConstantPool.Utf8Entry; //导入依赖的package包/类
InnerClass(ClassEntry thisClass, ClassEntry outerClass,
           Utf8Entry name, int flags) {
    this.thisClass = thisClass;
    this.outerClass = outerClass;
    this.name = name;
    this.flags = flags;
    this.predictable = computePredictable();
}
 

import com.sun.java.util.jar.pack.ConstantPool.Utf8Entry; //导入依赖的package包/类
void readMember(boolean doMethod) throws IOException {
    int    mflags = readUnsignedShort();
    Utf8Entry       mname = readUtf8Ref();
    SignatureEntry  mtype = readSignatureRef();
    DescriptorEntry descr = ConstantPool.getDescriptorEntry(mname, mtype);
    Class.Member m;
    if (!doMethod)
        m = cls.new Field(mflags, descr);
    else
        m = cls.new Method(mflags, descr);
    readAttributes(!doMethod ? ATTR_CONTEXT_FIELD : ATTR_CONTEXT_METHOD,
                   m);
}
 

import com.sun.java.util.jar.pack.ConstantPool.Utf8Entry; //导入依赖的package包/类
void readInnerClasses(Class cls) throws IOException {
    int nc = readUnsignedShort();
    ArrayList<InnerClass> ics = new ArrayList<>(nc);
    for (int i = 0; i < nc; i++) {
        InnerClass ic =
            new InnerClass(readClassRef(),
                           readClassRefOrNull(),
                           (Utf8Entry)readRefOrNull(CONSTANT_Utf8),
                           readUnsignedShort());
        ics.add(ic);
    }
    cls.innerClasses = ics;  // set directly; do not use setInnerClasses.
    // (Later, ics may be transferred to the pkg.)
}
 

import com.sun.java.util.jar.pack.ConstantPool.Utf8Entry; //导入依赖的package包/类
private void transformSourceFile(boolean minimize) {
    // Replace "obvious" SourceFile by null.
    Attribute olda = getAttribute(attrSourceFileSpecial);
    if (olda == null)
        return;  // no SourceFile attr.
    String obvious = getObviousSourceFile();
    List<Entry> ref = new ArrayList<>(1);
    olda.visitRefs(this, VRM_PACKAGE, ref);
    Utf8Entry sfName = (Utf8Entry) ref.get(0);
    Attribute a = olda;
    if (sfName == null) {
        if (minimize) {
            // A pair of zero bytes.  Cannot use predef. layout.
            a = Attribute.find(ATTR_CONTEXT_CLASS, "SourceFile", "H");
            a = a.addContent(new byte[2]);
        } else {
            // Expand null attribute to the obvious string.
            byte[] bytes = new byte[2];
            sfName = getRefString(obvious);
            Object f = null;
            f = Fixups.add(f, bytes, 0, Fixups.U2_FORMAT, sfName);
            a = attrSourceFileSpecial.addContent(bytes, f);
        }
    } else if (obvious.equals(sfName.stringValue())) {
        if (minimize) {
            // Replace by an all-zero attribute.
            a = attrSourceFileSpecial.addContent(new byte[2]);
        } else {
            assert(false);
        }
    }
    if (a != olda) {
        if (verbose > 2)
            Utils.log.fine("recoding obvious SourceFile="+obvious);
        List<Attribute> newAttrs = new ArrayList<>(getAttributes());
        int where = newAttrs.indexOf(olda);
        newAttrs.set(where, a);
        setAttributes(newAttrs);
    }
}