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/* ____ ____ ____ ____ ______ *\
** / __// __ \/ __// __ \/ ____/ SOcos COmpiles Scala **
** __\_ \/ /_/ / /__/ /_/ /\_ \ (c) 2002, LAMP/EPFL **
** /_____/\____/\___/\____/____/ **
** **
** $Id$
\* */
package scalac.transformer.matching;
import scalac.*;
import scalac.ast.*;
import scalac.util.*;
import scalac.symtab.*;
import scalac.typechecker.*;
import PatternNode.*;
import Tree.*;
/** this class takes care of tedious stuff which has nothing to do with
* matching
*/
abstract class PatternTool {
public static final Name RESULT_N = Name.fromString("$result");
public static final Name SCALA_N = Name.fromString("scala");
public static final Name BOOLEAN_N = Name.fromString("Boolean");
public static final Name AND_N = Name.fromString("$amp$amp");
public static final Name OR_N = Name.fromString("$bar$bar");
public static final Name NOT_N = Name.fromString("$bang");
public static final Name EQUALS_N = Name.fromString("$eq$eq");
public static final Name SCALA_MATCHERROR_N = Name.fromString("scala.MatchError");
public static final Name MATCHERROR_N = Name.fromString("MatchError");
public static final Name FAIL_N = Name.fromString("fail");
public static final Name LENGTH_N = Name.fromString("length");
public static final Name APPLY_N = Name.fromString("apply");
/** the current compilation unit
*/
Unit unit;
/** the global fresh name creator
*/
FreshNameCreator fresh;
/** the global tree factory
*/
TreeFactory make;
/** the global definitions component
*/
Definitions defs;
/** the global tree generation component
*/
TreeGen gen;
/** type inference engine
*/
Infer infer;
/** the statics of class Boolean
*/
Symbol statics; // REMOVE
/** the eqeq symbol
*/
Symbol eqSymInt; // REMOVE
Symbol eqSymBool; // REMOVE
/** the eqeq symbol
*/
Symbol notSym;
// constructor
public PatternTool( Unit unit, Infer infer ) {
this.unit = unit;
this.infer = infer;
this.fresh = unit.global.freshNameCreator;
this.make = unit.global.make;
this.gen = unit.global.treeGen;
this.defs = unit.global.definitions;
this.notSym = defs.BOOLEAN_CLASS.lookup/*Term*/( NOT_N );
assert !(notSym instanceof NoSymbol) : " Boolean.! not found ";
} // PatternTool( Unit unit, .... )
} // class PatternTool
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