/*
* Copyright 2003-2016 JetBrains s.r.o.
*
* 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 jetbrains.mps.project.structure.modules;
import jetbrains.mps.project.ModuleId;
import jetbrains.mps.util.EqualUtil;
import jetbrains.mps.util.InternUtil;
import jetbrains.mps.util.annotation.ToRemove;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.mps.annotations.Immutable;
import org.jetbrains.mps.openapi.module.SModule;
import org.jetbrains.mps.openapi.module.SModuleId;
import org.jetbrains.mps.openapi.module.SModuleReference;
import org.jetbrains.mps.openapi.module.SRepository;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@Immutable
public final class ModuleReference implements SModuleReference {
private static final Pattern MODULE_REFERENCE = Pattern.compile("(.*?)\\((.*?)\\)");
private final String myModuleName;
private final SModuleId myModuleId;
public ModuleReference(@Nullable String moduleName, @NotNull SModuleId moduleId) {
myModuleName = InternUtil.intern(moduleName);
myModuleId = moduleId;
}
@NotNull
@Override
public SModuleId getModuleId() {
return myModuleId;
}
@Nullable
@Override
public String getModuleName() {
return myModuleName;
}
@Override
public SModule resolve(@NotNull SRepository repo) {
return repo.getModule(getModuleId());
}
public int hashCode() {
if (myModuleId != null) return myModuleId.hashCode();
return myModuleName.hashCode();
}
public boolean equals(Object obj) {
if (!(obj instanceof SModuleReference)) {
return false;
}
SModuleReference p = (SModuleReference) obj;
if (myModuleId == null && p.getModuleId() == null) {
return myModuleName.equals(p.getModuleName());
}
return Objects.equals(myModuleId, p.getModuleId());
}
public String toString() {
if (myModuleId == null) {
return myModuleName;
}
return myModuleId.toString() + "(" + myModuleName + ")";
}
public static SModuleReference parseReference(String text) {
text = text.trim();
Matcher m = MODULE_REFERENCE.matcher(text);
if (m.matches()) {
return new ModuleReference(m.group(2), ModuleId.fromString(m.group(1)));
}
throw new IllegalArgumentException(String.format("Bad module reference %s", text));
}
/**
* Common functionality to tell if two references are identical, identical here being both id and name.
* Unlike #equals(), where id takes precedence.
* Not specific to ModuleReference implementation, lives here as there's no better/discoverable place yet.
* Originates from RefUpdateUtil.
* @return <code>true</code> if either reference is null, or either references' name or id does not match
*/
public static boolean differs(SModuleReference ref1, SModuleReference ref2) {
if (ref1 == null || ref2 == null) {
return ref1 != ref2;
}
// both not null
return !(EqualUtil.equals(ref1.getModuleId(), ref2.getModuleId()) && EqualUtil.equals(ref1.getModuleName(), ref2.getModuleName()));
}
}