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/*
* Copyright 2000-2014 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.psi;
import com.intellij.pom.java.LanguageLevel;
import com.intellij.psi.search.GlobalSearchScope;
import com.intellij.psi.util.PsiUtil;
import gnu.trove.THashMap;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
/**
* Represents primitive types of Java language.
*/
public class PsiPrimitiveType extends PsiType.Stub {
private static final Map<String, PsiPrimitiveType> ourQNameToUnboxed = new THashMap<String, PsiPrimitiveType>();
private static final Map<PsiPrimitiveType, String> ourUnboxedToQName = new THashMap<PsiPrimitiveType, String>();
private final String myName;
PsiPrimitiveType(@NonNls @NotNull String name, @NonNls String boxedName) {
this(name, PsiAnnotation.EMPTY_ARRAY);
if (boxedName != null) {
ourQNameToUnboxed.put(boxedName, this);
ourUnboxedToQName.put(this, boxedName);
}
}
public PsiPrimitiveType(@NonNls @NotNull String name, @NotNull PsiAnnotation[] annotations) {
super(annotations);
myName = name;
}
@NotNull
@Override
public String getPresentableText() {
return getText(false, true);
}
@NotNull
@Override
public String getCanonicalText(boolean annotated) {
return getText(true, annotated);
}
@NotNull
@Override
public String getInternalCanonicalText() {
return getText(true, true);
}
private String getText(boolean qualified, boolean annotated) {
PsiAnnotation[] annotations = getAnnotations();
if (!annotated || annotations.length == 0) return myName;
StringBuilder sb = new StringBuilder();
PsiNameHelper.appendAnnotations(sb, annotations, qualified);
sb.append(myName);
return sb.toString();
}
/**
* Always returns true.
*/
@Override
public boolean isValid() {
return true;
}
@Override
public boolean equalsToText(@NotNull String text) {
return myName.equals(text);
}
@Override
public <A> A accept(@NotNull PsiTypeVisitor<A> visitor) {
return visitor.visitPrimitiveType(this);
}
@Override
public GlobalSearchScope getResolveScope() {
return null;
}
@Override
@NotNull
public PsiType[] getSuperTypes() {
return EMPTY_ARRAY;
}
/**
* Returns the primitive type corresponding to a boxed class type.
*
* @param type the type to get the unboxed primitive type for.
* @return the primitive type, or null if the type does not represent a boxed primitive type.
*/
@Nullable
public static PsiPrimitiveType getUnboxedType(PsiType type) {
if (!(type instanceof PsiClassType)) return null;
LanguageLevel languageLevel = ((PsiClassType)type).getLanguageLevel();
if (!languageLevel.isAtLeast(LanguageLevel.JDK_1_5)) return null;
assert type.isValid() : type;
PsiClass psiClass = ((PsiClassType)type).resolve();
if (psiClass == null) return null;
PsiPrimitiveType unboxed = ourQNameToUnboxed.get(psiClass.getQualifiedName());
PsiAnnotation[] annotations = type.getAnnotations();
if (unboxed != null && annotations.length > 0) {
unboxed = new PsiPrimitiveType(unboxed.myName, annotations);
}
return unboxed;
}
public String getBoxedTypeName() {
return ourUnboxedToQName.get(this);
}
/**
* Returns a boxed class type corresponding to the primitive type.
*
* @param context where this boxed type is to be used
* @return the class type, or null if the current language level does not support autoboxing or
* it was not possible to resolve the reference to the class.
*/
@Nullable
public PsiClassType getBoxedType(PsiElement context) {
LanguageLevel languageLevel = PsiUtil.getLanguageLevel(context);
if (!languageLevel.isAtLeast(LanguageLevel.JDK_1_5)) return null;
String boxedQName = getBoxedTypeName();
//[ven]previous call returns null for NULL, VOID
if (boxedQName == null) return null;
PsiClass aClass = JavaPsiFacade.getInstance(context.getProject()).findClass(boxedQName, context.getResolveScope());
if (aClass == null) return null;
PsiElementFactory factory = JavaPsiFacade.getInstance(context.getProject()).getElementFactory();
return factory.createType(aClass, PsiSubstitutor.EMPTY, languageLevel, getAnnotations());
}
@Nullable
public PsiClassType getBoxedType(final PsiManager manager, final GlobalSearchScope resolveScope) {
final String boxedQName = getBoxedTypeName();
//[ven]previous call returns null for NULL, VOID
if (boxedQName == null) return null;
final PsiClass aClass = JavaPsiFacade.getInstance(manager.getProject()).findClass(boxedQName, resolveScope);
if (aClass == null) return null;
return JavaPsiFacade.getInstance(manager.getProject()).getElementFactory().createType(aClass);
}
public static Collection<String> getAllBoxedTypeNames() {
return Collections.unmodifiableCollection(ourQNameToUnboxed.keySet());
}
@Override
public int hashCode() {
return myName.hashCode();
}
@Override
public boolean equals(Object obj) {
return obj instanceof PsiPrimitiveType && myName.equals(((PsiPrimitiveType)obj).myName);
}
}
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