diff options
| -rw-r--r-- | config/list/compiler.lst | 1 | ||||
| -rw-r--r-- | sources/scalac/symtab/SymbolComparator.java | 37 |
2 files changed, 38 insertions, 0 deletions
diff --git a/config/list/compiler.lst b/config/list/compiler.lst index 0d55e231a9..50868c219f 100644 --- a/config/list/compiler.lst +++ b/config/list/compiler.lst @@ -94,6 +94,7 @@ symtab/SourceCompleter.java symtab/SymSet.java symtab/Symbol.java symtab/SymbolCloner.java +symtab/SymbolComparator.java symtab/SymbolSubstTypeMap.java symtab/SymbolTablePrinter.java symtab/Type.java diff --git a/sources/scalac/symtab/SymbolComparator.java b/sources/scalac/symtab/SymbolComparator.java new file mode 100644 index 0000000000..c703663bf4 --- /dev/null +++ b/sources/scalac/symtab/SymbolComparator.java @@ -0,0 +1,37 @@ +/* ____ ____ ____ ____ ______ *\ +** / __// __ \/ __// __ \/ ____/ SOcos COmpiles Scala ** +** __\_ \/ /_/ / /__/ /_/ /\_ \ (c) 2002, LAMP/EPFL ** +** /_____/\____/\___/\____/____/ ** +\* */ + +// $Id$ + +package scalac.symtab; + +import java.util.Comparator; + +/** This class implements a symbol comparator. */ +public class SymbolComparator implements Comparator { + + //######################################################################## + // Public Constants + + /** The unique instance of this class */ + public static final Comparator instance = new SymbolComparator(); + + //######################################################################## + // Private Constructors + + /** Initializes this instance. */ + private SymbolComparator() {} + + //######################################################################## + // Public Methods + + /** Compares the two arguments which must inherit from Symbol. */ + public int compare(Object lf, Object rg) { + return lf == rg ? 0 : ((Symbol)lf).isLess((Symbol)rg) ? -1 : 1; + } + + //######################################################################## +} |