name.java

是一款用JAVA 编写的编译器 具有很强的编译功能

     */
    public static Name concat(Table table, Name ns[]) {
        int len = 0;
        for (int i = 0; i < ns.length; i++)
            len = len + ns[i].len;
        byte[] bs = new byte[len];
        len = 0;
        for (int i = 0; i < ns.length; i++) {
            ns[i].getBytes(bs, len);
            len = len + ns[i].len;
        }
        return fromUtf(table, bs, 0, len);
    }

    public char charAt(int index) {
        return toString().charAt(index);
    }

    public CharSequence subSequence(int start, int end) {
        return toString().subSequence(start, end);
    }

    public boolean contentEquals(CharSequence cs) {
	return this.toString().equals(cs.toString());
    }

    public static class Table {
	// maintain a freelist of recently used name tables for reuse.
	private static List<SoftReference<Table>> freelist = List.nil();

	static private synchronized Table make() {
	    while (freelist.nonEmpty()) {
		Table t = freelist.head.get();
		freelist = freelist.tail;
		if (t != null) return t;
	    }
	    return new Table();
	}

	static private synchronized void dispose(Table t) {
	    freelist = freelist.prepend(new SoftReference<Table>(t));
	}

	public void dispose() {
	    dispose(this);
	}

	public static final Context.Key<Table> namesKey =
	    new Context.Key<Table>();

	public static Table instance(Context context) {
	    Table instance = context.get(namesKey);
	    if (instance == null) {
		instance = make();
		context.put(namesKey, instance);
	    }
	    return instance;
	}

	/** The hash table for names.
	 */
	private Name[] hashes;

	/** The array holding all encountered names.
	 */
	public byte[] names;

	/** The mask to be used for hashing
	 */
	private int hashMask;

	/** The number of filled bytes in `names'.
	 */
	private int nc = 0;

	/** Allocator
	 *  @param hashSize the (constant) size to be used for the hash table
	 *                  needs to be a power of two.
	 *  @param nameSize the initial size of the name table.
	 */
	public Table(int hashSize, int nameSize) {
	    hashMask = hashSize - 1;
	    hashes = new Name[hashSize];
	    names = new byte[nameSize];

	    slash = fromString("/");
	    hyphen = fromString("-");
            T = fromString("T");
	    slashequals = fromString("/=");
	    deprecated = fromString("deprecated");
		
	    init = fromString("<init>");
	    clinit = fromString("<clinit>");
	    error = fromString("<error>");
	    any = fromString("<any>");
	    empty = fromString("");
	    one = fromString("1");
	    period = fromString(".");
	    comma = fromString(",");
	    semicolon = fromString(";");
	    asterisk = fromString("*");
	    _this = fromString("this");
	    _super = fromString("super");
	    _default = fromString("default");
		
	    _class = fromString("class");
	    java_lang = fromString("java.lang");
	    java_lang_Object = fromString("java.lang.Object");
	    java_lang_Class = fromString("java.lang.Class");
	    java_lang_Cloneable = fromString("java.lang.Cloneable");
	    java_io_Serializable = fromString("java.io.Serializable");
	    java_lang_Enum = fromString("java.lang.Enum");
	    package_info = fromString("package-info");
	    serialVersionUID = fromString("serialVersionUID");
	    ConstantValue = fromString("ConstantValue");
	    LineNumberTable = fromString("LineNumberTable");
	    LocalVariableTable = fromString("LocalVariableTable");
	    LocalVariableTypeTable = fromString("LocalVariableTypeTable");
	    CharacterRangeTable = fromString("CharacterRangeTable");
	    StackMap = fromString("StackMap");
	    StackMapTable = fromString("StackMapTable");
	    SourceID = fromString("SourceID");
	    CompilationID = fromString("CompilationID");
	    Code = fromString("Code");
	    Exceptions = fromString("Exceptions");
	    SourceFile = fromString("SourceFile");
	    InnerClasses = fromString("InnerClasses");
	    Synthetic = fromString("Synthetic");
	    Bridge= fromString("Bridge");
	    Deprecated = fromString("Deprecated");
	    Enum = fromString("Enum");
	    _name = fromString("name");
	    Signature = fromString("Signature");
	    Varargs = fromString("Varargs");
	    Annotation = fromString("Annotation");
	    RuntimeVisibleAnnotations = fromString("RuntimeVisibleAnnotations");
	    RuntimeInvisibleAnnotations = fromString("RuntimeInvisibleAnnotations");
	    RuntimeVisibleParameterAnnotations = fromString("RuntimeVisibleParameterAnnotations");
	    RuntimeInvisibleParameterAnnotations = fromString("RuntimeInvisibleParameterAnnotations");
	    Value = fromString("Value");
	    EnclosingMethod = fromString("EnclosingMethod");

	    desiredAssertionStatus = fromString("desiredAssertionStatus");
		
	    append  = fromString("append");
	    family  = fromString("family");
	    forName = fromString("forName");
	    toString = fromString("toString");
	    length = fromString("length");
	    valueOf = fromString("valueOf");
	    value = fromString("value");
	    getMessage = fromString("getMessage");
	    getClass = fromString("getClass");

	    TYPE = fromString("TYPE");
	    FIELD = fromString("FIELD");
	    METHOD = fromString("METHOD");
	    PARAMETER = fromString("PARAMETER");
	    CONSTRUCTOR = fromString("CONSTRUCTOR");
	    LOCAL_VARIABLE = fromString("LOCAL_VARIABLE");
	    ANNOTATION_TYPE = fromString("ANNOTATION_TYPE");
	    PACKAGE = fromString("PACKAGE");

	    SOURCE = fromString("SOURCE");
	    CLASS = fromString("CLASS");
	    RUNTIME = fromString("RUNTIME");

	    Array = fromString("Array");
	    Method = fromString("Method");
	    Bound = fromString("Bound");
	    clone = fromString("clone");
	    getComponentType = fromString("getComponentType");
	    getClassLoader = fromString("getClassLoader");
	    initCause = fromString("initCause");
	    values = fromString("values");
	    iterator = fromString("iterator");
	    hasNext = fromString("hasNext");
	    next = fromString("next");
	    AnnotationDefault = fromString("AnnotationDefault");
            ordinal = fromString("ordinal");
            equals = fromString("equals");
            hashCode = fromString("hashCode");
            compareTo = fromString("compareTo");
            getDeclaringClass = fromString("getDeclaringClass");
            ex = fromString("ex");
            finalize = fromString("finalize");
	}

	public Table() {
	    this(0x8000, 0x20000);
	}

	/** Create a name from the bytes in cs[start..start+len-1].
	 *  Assume that bytes are in utf8 format.
	 */
	public Name fromUtf(byte cs[], int start, int len) {
	    return Name.fromUtf(this, cs, start, len);
	}

	/** Create a name from the bytes in array cs.
	 *  Assume that bytes are in utf8 format.
	 */
	public Name fromUtf(byte cs[]) {
	    return Name.fromUtf(this, cs, 0, cs.length);
	}

	/** Create a name from the characters in cs[start..start+len-1].
	 */
	public Name fromChars(char[] cs, int start, int len) {
	    return Name.fromChars(this, cs, start, len);
	}

	/** Create a name from the characters in string s.
	 */
	public Name fromString(CharSequence s) {
	    return Name.fromString(this, s);
	}

	public final Name slash;
	public final Name hyphen;
        public final Name T;
	public final Name slashequals;
	public final Name deprecated;
		
	public final Name init;
	public final Name clinit;
	public final Name error;
	public final Name any;
	public final Name empty;
	public final Name one;
	public final Name period;
	public final Name comma;
	public final Name semicolon;
	public final Name asterisk;
	public final Name _this;
	public final Name _super;
	public final Name _default;

	public final Name _class;
	public final Name java_lang;
	public final Name java_lang_Object;
	public final Name java_lang_Class;
	public final Name java_lang_Cloneable;
	public final Name java_io_Serializable;
	public final Name serialVersionUID;
	public final Name java_lang_Enum;
	public final Name package_info;
	public final Name ConstantValue;
	public final Name LineNumberTable;
	public final Name LocalVariableTable;
	public final Name LocalVariableTypeTable;
	public final Name CharacterRangeTable;
	public final Name StackMap;
	public final Name StackMapTable;
	public final Name SourceID;
	public final Name CompilationID;
	public final Name Code;
	public final Name Exceptions;
	public final Name SourceFile;
	public final Name InnerClasses;
	public final Name Synthetic;
	public final Name Bridge;
	public final Name Deprecated;
	public final Name Enum;
	public final Name _name;
	public final Name Signature;
	public final Name Varargs;
	public final Name Annotation;
	public final Name RuntimeVisibleAnnotations;
	public final Name RuntimeInvisibleAnnotations;
	public final Name RuntimeVisibleParameterAnnotations;
	public final Name RuntimeInvisibleParameterAnnotations;

	public final Name Value;
	public final Name EnclosingMethod;

	public final Name desiredAssertionStatus;
		
	public final Name append;
	public final Name family;
	public final Name forName;
	public final Name toString;
	public final Name length;
	public final Name valueOf;
	public final Name value;
	public final Name getMessage;
	public final Name getClass;

	public final Name TYPE;
	public final Name FIELD;
	public final Name METHOD;
	public final Name PARAMETER;
	public final Name CONSTRUCTOR;
	public final Name LOCAL_VARIABLE;
	public final Name ANNOTATION_TYPE;
	public final Name PACKAGE;

	public final Name SOURCE;
	public final Name CLASS;
	public final Name RUNTIME;

	public final Name Array;
	public final Name Method;
	public final Name Bound;
	public final Name clone;
	public final Name getComponentType;
	public final Name getClassLoader;
	public final Name initCause;
	public final Name values;
	public final Name iterator;
	public final Name hasNext;
	public final Name next;
	public final Name AnnotationDefault;
        public final Name ordinal;
        public final Name equals;
        public final Name hashCode;
        public final Name compareTo;
        public final Name getDeclaringClass;
        public final Name ex;
	public final Name finalize;
    }

    public boolean isEmpty() {
        return len == 0;
    }
}