/* // $Id: //guest/julian_hyde/saffron/src/main/saffron/rel/java/ForTerminator.java#2 $ // Saffron preprocessor and data engine // Copyright (C) 2002 Julian Hyde <julian.hyde@mail.com> // // This library is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public // License as published by the Free Software Foundation; either // version 2 of the License, or (at your option) any later version. // // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // // You should have received a copy of the GNU Library General Public // License along with this library; if not, write to the // Free Software Foundation, Inc., 59 Temple Place - Suite 330, // Boston, MA 02111-1307, USA. // // See the COPYING file located in the top-level-directory of // the archive of this library for complete text of license. */ package saffron.rel.java; import openjava.ptree.*; import saffron.opt.Cluster; import saffron.opt.Implementor; import saffron.opt.CallingConvention; import saffron.rel.Rel; import saffron.util.Util; /** * A <code>ForTerminator</code> takes a {@link saffron.rel.Rel} of {@link * CallingConvention#JAVA} and makes it into a <code>for ...</code> loop. **/ public class ForTerminator extends SingleTerminator { Variable variable; StatementList body; String label; public ForTerminator( Cluster cluster, Rel child, Variable variable, StatementList body, String label) { super(cluster, child); Util.assert(child.getConvention() == CallingConvention.JAVA); this.variable = variable; this.body = body; this.label = label; } // implement Rel public Object clone() { return new ForTerminator( cluster, Util.clone(child), (Variable) Util.clone(variable), Util.clone(body), label); } public Object implement(Implementor implementor, int ordinal) { switch (ordinal) { case -1: // called from parent { implementor.setExitStatement( new BreakStatement(label)); StatementList stmtList = new StatementList(); implementor.pushStatementList(stmtList); Object o = implementor.implementChild(this, 0, child); Util.assert(o == null); implementor.popStatementList(stmtList); return stmtList; } case 0: // called from child { // Generate // Rowtype variable = <<child variable>>; // <<parent body (references variable)>> StatementList stmtList = implementor.getStatementList(); Expression exp = implementor.translateInput(this, 0); stmtList.add( new VariableDeclaration( TypeName.forOJClass(child.getRowType()), variable.toString(), exp)); stmtList.addAll(body); return null; } default: throw Util.newInternal( "implement: ordinal=" + ordinal); } } }
# | Change | User | Description | Committed | |
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#2 | 1474 | Julian Hyde |
saffron: Aggregations are working. Renamed 'aggregator' to 'aggregation'. |
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#1 | 1467 | Julian Hyde |
saffron: First saffron check-in; incorporate my changes to openjava. |