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/* ____ ____ ____ ____ ______ *\
** / __// __ \/ __// __ \/ ____/ SOcos COmpiles Scala **
** __\_ \/ /_/ / /__/ /_/ /\_ \ (c) 2002, LAMP/EPFL **
** /_____/\____/\___/\____/____/ **
\* */
// $Id$
package scalac.util;
/** This class implements the common part of TermName and TypeName. */
public abstract class Name {
//########################################################################
// Public Fields
/** The unique identifier */
public final int index;
//########################################################################
// Private Fields
/** The related term name */
private final TermName term;
/** The related type name (null if not yet created) */
private TypeName type;
//########################################################################
// Protected Constructors
/** Initializes this instance. */
protected Name(int index, TermName term) {
this.index = index;
this.term = term == null ? (TermName)this : term;
this.type = term == null ? null : (TypeName)this;
}
//########################################################################
// Public Factories
/** Returns the term name with given ASCII representation. */
public static TermName fromAscii(byte[] bytes, int start, int count) {
return TermName.fromAscii(bytes, start, count);
}
/** Returns the term name with given string representation. */
public static TermName fromString(String string) {
return TermName.fromString(string);
}
//########################################################################
// Public Methods
/** Is this name a variable identifier? */
public final boolean isVariable() {
char first = charAt(0);
return (('a' <= first && first <= 'z') || first == '_')
&& this != Names.false_
&& this != Names.true_
&& this != Names.null_;
}
/** Is this name a term name? */
public final boolean isTermName() {
return this == term;
}
/** Is this name a type name? */
public final boolean isTypeName() {
return this == type;
}
/** Returns the term name with the same representation. */
public final TermName toTermName() {
return term;
}
/** Returns the type name with the same representation. */
public final TypeName toTypeName() {
return type != null ? type : (type = new TypeName(term));
}
/** Returns the result of "toString().length()". */
public final int length() {
return toString().length();
}
/** Returns the result of "toString().charAt(index)". */
public final char charAt(int index) {
return toString().charAt(index);
}
/** Returns the result of "toString().indexOf(ch)". */
public final int indexOf(char ch) {
return toString().indexOf(ch);
}
/** Returns the result of "toString().indexOf(ch, start)". */
public final int indexOf(char ch, int start) {
return toString().indexOf(ch, start);
}
/** Returns the result of "toString().lastIndexOf(ch)". */
public final int lastIndexOf(char ch) {
return toString().lastIndexOf(ch);
}
/** Returns the result of "toString().lastIndexOf(ch, start)". */
public final int lastIndexOf(char ch, int start) {
return toString().lastIndexOf(ch, start);
}
/** Returns the hash code of this name. */
public final int hashCode() {
return index;
}
/** Returns the string representation of this name. */
public String toString() {
return term.toString();
}
/**
* Returns the ASCII representation of this name. The returned
* array is not a copy. Therefore, it is forbidden to modify it.
*/
public byte[] toAsciiUnsafe() {
return term.toAsciiUnsafe();
}
//########################################################################
}
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