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// Copyright (C) 2012 The Android Open Source Project
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package gerrit;
import com.google.gerrit.rules.StoredValues;
import com.google.gerrit.server.patch.PatchList;
import com.googlecode.prolog_cafe.lang.IntegerTerm;
import com.googlecode.prolog_cafe.lang.Operation;
import com.googlecode.prolog_cafe.lang.Predicate;
import com.googlecode.prolog_cafe.lang.Prolog;
import com.googlecode.prolog_cafe.lang.PrologException;
import com.googlecode.prolog_cafe.lang.Term;
/**
* Exports basic commit statistics.
*
* <pre>
* 'commit_stats'(-Files, -Insertions, -Deletions)
* </pre>
*/
public class PRED_commit_stats_3 extends Predicate.P3 {
public PRED_commit_stats_3(Term a1, Term a2, Term a3, Operation n) {
arg1 = a1;
arg2 = a2;
arg3 = a3;
cont = n;
}
@Override
public Operation exec(Prolog engine) throws PrologException {
engine.setB0();
Term a1 = arg1.dereference();
Term a2 = arg2.dereference();
Term a3 = arg3.dereference();
PatchList pl = StoredValues.PATCH_LIST.get(engine);
if(!a1.unify(new IntegerTerm(pl.getPatches().size() -1),engine.trail)) { //Account for /COMMIT_MSG.
return engine.fail();
}
if(!a2.unify(new IntegerTerm(pl.getInsertions()),engine.trail)) {
return engine.fail();
}
if(!a3.unify(new IntegerTerm(pl.getDeletions()),engine.trail)) {
return engine.fail();
}
return cont;
}
}
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