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/*
* Copyright 2000-2013 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 com.intellij.codeInsight;
import com.intellij.openapi.util.NullableComputable;
import com.intellij.openapi.util.NullableLazyValue;
import com.intellij.openapi.util.VolatileNullableLazyValue;
import com.intellij.psi.PsiMethod;
import com.intellij.psi.PsiType;
import com.intellij.psi.util.PsiUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class ExpectedTypeInfoImpl implements ExpectedTypeInfo {
public static final NullableComputable<String> NULL = new NullableComputable<String>() {
@Override
public String compute() {
return null;
}
};
@NotNull
private final PsiType type;
@NotNull
private final PsiType defaultType;
private final int kind;
@NotNull
private final TailType myTailType;
private final PsiMethod myCalledMethod;
@NotNull private final NullableComputable<String> expectedNameComputable;
@NotNull private final NullableLazyValue<String> expectedNameLazyValue;
@Override
public int getKind() {
return kind;
}
@NotNull
@Override
public TailType getTailType() {
return myTailType;
}
public ExpectedTypeInfoImpl(@NotNull PsiType type,
@Type int kind,
@NotNull PsiType defaultType,
@NotNull TailType myTailType,
PsiMethod calledMethod,
@NotNull NullableComputable<String> expectedName) {
this.type = type;
this.kind = kind;
this.myTailType = myTailType;
this.defaultType = defaultType;
myCalledMethod = calledMethod;
this.expectedNameComputable = expectedName;
expectedNameLazyValue = new VolatileNullableLazyValue<String>() {
@Nullable
@Override
protected String compute() {
return expectedNameComputable.compute();
}
};
PsiUtil.ensureValidType(type);
PsiUtil.ensureValidType(defaultType);
}
@Nullable
public String getExpectedName() {
return expectedNameLazyValue.getValue();
}
@Override
public PsiMethod getCalledMethod() {
return myCalledMethod;
}
@Override
@NotNull
public PsiType getType () {
return type;
}
@Override
@NotNull
public PsiType getDefaultType () {
return defaultType;
}
public boolean equals(final Object o) {
if (this == o) return true;
if (!(o instanceof ExpectedTypeInfoImpl)) return false;
final ExpectedTypeInfoImpl that = (ExpectedTypeInfoImpl)o;
if (kind != that.kind) return false;
if (!defaultType.equals(that.defaultType)) return false;
if (!myTailType.equals(that.myTailType)) return false;
if (!type.equals(that.type)) return false;
return true;
}
public int hashCode() {
int result = type.hashCode();
result = 31 * result + defaultType.hashCode();
result = 31 * result + kind;
result = 31 * result + myTailType.hashCode();
return result;
}
@Override
public boolean equals(ExpectedTypeInfo obj) {
return equals((Object)obj);
}
@SuppressWarnings({"HardCodedStringLiteral"})
public String toString() {
return "ExpectedTypeInfo[type='" + type + "' kind='" + kind + "']";
}
@NotNull
@Override
public ExpectedTypeInfo[] intersect(@NotNull ExpectedTypeInfo info) {
ExpectedTypeInfoImpl info1 = (ExpectedTypeInfoImpl)info;
if (kind == TYPE_STRICTLY) {
if (info1.kind == TYPE_STRICTLY) {
if (info1.type.equals(type)) return new ExpectedTypeInfoImpl[] {this};
}
else {
return info1.intersect(this);
}
}
else if (kind == TYPE_OR_SUBTYPE) {
if (info1.kind == TYPE_STRICTLY) {
if (type.isAssignableFrom(info1.type)) return new ExpectedTypeInfoImpl[] {info1};
}
else if (info1.kind == TYPE_OR_SUBTYPE) {
PsiType otherType = info1.type;
if (type.isAssignableFrom(otherType)) return new ExpectedTypeInfoImpl[] {info1};
else if (otherType.isAssignableFrom(type)) return new ExpectedTypeInfoImpl[] {this};
}
else {
return info1.intersect(this);
}
}
else if (kind == TYPE_OR_SUPERTYPE) {
if (info1.kind == TYPE_STRICTLY) {
if (info1.type.isAssignableFrom(type)) return new ExpectedTypeInfoImpl[] {info1};
}
else if (info1.kind == TYPE_OR_SUBTYPE) {
PsiType otherType = info1.type;
if (otherType.isAssignableFrom(type)) return new ExpectedTypeInfoImpl[] {this};
}
else if (info1.kind == TYPE_OR_SUPERTYPE) {
PsiType otherType = info1.type;
if (type.isAssignableFrom(otherType)) return new ExpectedTypeInfoImpl[] {this};
else if (otherType.isAssignableFrom(type)) return new ExpectedTypeInfoImpl[] {info1};
}
else {
return info1.intersect(this);
}
}
//todo: the following cases are not implemented: SUPERxSUB, SUBxSUPER
return ExpectedTypeInfo.EMPTY_ARRAY;
}
}
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