e8e79c94cc
For describing predicate parameters in the javadoc we use '+' as indicator for input mode and '-' as indicator for output mode (see [1,2]). [1] https://www.swi-prolog.org/pldoc/man?section=preddesc [2] https://stackoverflow.com/questions/4220651/question-mark-plus-minus-preceding-prolog-variable-names Signed-off-by: Edwin Kempin <ekempin@google.com> Change-Id: I3195563311fbca02b7f42100fa1e90a8fc90746d
108 lines
3.6 KiB
Java
108 lines
3.6 KiB
Java
// Copyright (C) 2011 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package gerrit;
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import com.google.common.collect.ImmutableSet;
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import com.google.gerrit.entities.Account;
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import com.google.gerrit.server.account.Emails;
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import com.google.gerrit.server.rules.PrologEnvironment;
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import com.googlecode.prolog_cafe.exceptions.PrologException;
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import com.googlecode.prolog_cafe.exceptions.SystemException;
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import com.googlecode.prolog_cafe.lang.IntegerTerm;
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import com.googlecode.prolog_cafe.lang.Operation;
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import com.googlecode.prolog_cafe.lang.Predicate;
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import com.googlecode.prolog_cafe.lang.Prolog;
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import com.googlecode.prolog_cafe.lang.StructureTerm;
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import com.googlecode.prolog_cafe.lang.SymbolTerm;
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import com.googlecode.prolog_cafe.lang.Term;
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import java.io.IOException;
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import org.eclipse.jgit.lib.PersonIdent;
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/**
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* Abstract Prolog predicate for a Git person identity of a change.
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*
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* <p>Checks that the terms that are provided as input to this Prolog predicate match a Git person
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* identity of the change (either author or committer).
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*
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* <p>The terms that are provided as input to this Prolog predicate are:
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*
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* <ul>
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* <li>a user ID term that matches the account ID of the Git person identity
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* <li>a string atom that matches the full name of the Git person identity
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* <li>a string atom that matches the email of the Git person identity
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* </ul>
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*/
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abstract class AbstractCommitUserIdentityPredicate extends Predicate.P3 {
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private static final SymbolTerm user = SymbolTerm.intern("user", 1);
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private static final SymbolTerm anonymous = SymbolTerm.intern("anonymous");
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AbstractCommitUserIdentityPredicate(Term a1, Term a2, Term a3, Operation n) {
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arg1 = a1;
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arg2 = a2;
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arg3 = a3;
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cont = n;
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}
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protected Operation exec(Prolog engine, PersonIdent userId) throws PrologException {
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engine.setB0();
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Term a1 = arg1.dereference();
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Term a2 = arg2.dereference();
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Term a3 = arg3.dereference();
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Term idTerm;
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Term nameTerm = Prolog.Nil;
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Term emailTerm = Prolog.Nil;
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PrologEnvironment env = (PrologEnvironment) engine.control;
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Emails emails = env.getArgs().getEmails();
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Account.Id id = null;
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try {
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ImmutableSet<Account.Id> ids = emails.getAccountForExternal(userId.getEmailAddress());
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if (ids.size() == 1) {
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id = ids.iterator().next();
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}
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} catch (IOException e) {
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throw new SystemException(e.getMessage());
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}
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if (id == null) {
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idTerm = anonymous;
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} else {
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idTerm = new IntegerTerm(id.get());
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}
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String name = userId.getName();
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if (name != null && !name.equals("")) {
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nameTerm = SymbolTerm.create(name);
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}
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String email = userId.getEmailAddress();
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if (email != null && !email.equals("")) {
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emailTerm = SymbolTerm.create(email);
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}
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if (!a1.unify(new StructureTerm(user, idTerm), engine.trail)) {
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return engine.fail();
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}
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if (!a2.unify(nameTerm, engine.trail)) {
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return engine.fail();
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}
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if (!a3.unify(emailTerm, engine.trail)) {
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return engine.fail();
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}
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return cont;
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}
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}
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