/**
 * END USER LICENSE AGREEMENT (“EULA”)
 *
 * READ THIS AGREEMENT CAREFULLY (date: 9/13/2011):
 * http://www.akiban.com/licensing/20110913
 *
 * BY INSTALLING OR USING ALL OR ANY PORTION OF THE SOFTWARE, YOU ARE ACCEPTING
 * ALL OF THE TERMS AND CONDITIONS OF THIS AGREEMENT. YOU AGREE THAT THIS
 * AGREEMENT IS ENFORCEABLE LIKE ANY WRITTEN AGREEMENT SIGNED BY YOU.
 *
 * IF YOU HAVE PAID A LICENSE FEE FOR USE OF THE SOFTWARE AND DO NOT AGREE TO
 * THESE TERMS, YOU MAY RETURN THE SOFTWARE FOR A FULL REFUND PROVIDED YOU (A) DO
 * NOT USE THE SOFTWARE AND (B) RETURN THE SOFTWARE WITHIN THIRTY (30) DAYS OF
 * YOUR INITIAL PURCHASE.
 *
 * IF YOU WISH TO USE THE SOFTWARE AS AN EMPLOYEE, CONTRACTOR, OR AGENT OF A
 * CORPORATION, PARTNERSHIP OR SIMILAR ENTITY, THEN YOU MUST BE AUTHORIZED TO SIGN
 * FOR AND BIND THE ENTITY IN ORDER TO ACCEPT THE TERMS OF THIS AGREEMENT. THE
 * LICENSES GRANTED UNDER THIS AGREEMENT ARE EXPRESSLY CONDITIONED UPON ACCEPTANCE
 * BY SUCH AUTHORIZED PERSONNEL.
 *
 * IF YOU HAVE ENTERED INTO A SEPARATE WRITTEN LICENSE AGREEMENT WITH AKIBAN FOR
 * USE OF THE SOFTWARE, THE TERMS AND CONDITIONS OF SUCH OTHER AGREEMENT SHALL
 * PREVAIL OVER ANY CONFLICTING TERMS OR CONDITIONS IN THIS AGREEMENT.
 */

package com.akiban.server.types3.common.funcs;

import com.akiban.server.types3.LazyList;
import com.akiban.server.types3.TClass;
import com.akiban.server.types3.TExecutionContext;
import com.akiban.server.types3.TOverloadResult;
import com.akiban.server.types3.pvalue.PValueSource;
import com.akiban.server.types3.pvalue.PValueTarget;
import com.akiban.server.types3.texpressions.TInputSetBuilder;
import com.akiban.server.types3.texpressions.TOverloadBase;

public class Reverse extends TOverloadBase
{
    private final TClass stringType;
    public Reverse (TClass stringType)
    {
        this.stringType = stringType;
    }

    @Override
    protected void buildInputSets(TInputSetBuilder builder)
    {
        builder.covers(stringType, 0);
    }

    @Override
    protected void doEvaluate(TExecutionContext context, LazyList<? extends PValueSource> inputs, PValueTarget output)
    {
        output.putObject(new StringBuilder((String)inputs.get(0).getObject()).reverse().toString());
    }

    @Override
    public String overloadName()
    {
        return "REVERSE";
    }

    @Override
    public TOverloadResult resultType()
    {
        //TODO: evaluate the string and return the string witht same precision
        return TOverloadResult.fixed(stringType.instance());
    }
}

@@ -1394,73 +1394,269 @@
 s3.T
-ExecutionContext;%0Aimport com.akiban.server.types3.TOverloadResult
+CustomOverloadResult;%0Aimport com.akiban.server.types3.TExecutionContext;%0Aimport com.akiban.server.types3.TInstance;%0Aimport com.akiban.server.types3.TOverloadResult;%0Aimport com.akiban.server.types3.TPreptimeContext;%0Aimport com.akiban.server.types3.TPreptimeValue
 ;%0Aim
@@ -1881,16 +1881,39 @@
 oadBase;
+%0Aimport java.util.List;
 %0A%0Apublic
@@ -2588,32 +2588,33 @@
 sultType()%0A    %7B
+ 
 %0A        //TODO:
@@ -2612,76 +2612,61 @@
   //
-TODO: evaluate the string and return the string witht
+ actual return type is exactly the
  same 
-precision
+as input type
 %0A   
@@ -2697,37 +2697,265 @@
 ult.
-fixed(stringType.instance());
+custom(new TCustomOverloadResult()%0A        %7B%0A            @Override%0A            public TInstance resultInstance(List%3CTPreptimeValue%3E inputs, TPreptimeContext context)%0A            %7B%0A                return inputs.get(0).instance();%0A            %7D%0A        %7D);   
 %0A   

clean up