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optimisation

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This commit is contained in:
Alexey Kudravtsev
2014-09-24 17:51:18 +04:00
parent ffcb291220
commit c26e733e45
1 changed files with 14 additions and 18 deletions
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platform/core-api/src/com/intellij/lang/Language.java
+14 -18
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@@ -1,5 +1,5 @@
/*
* Copyright 2000-2009 JetBrains s.r.o.
* 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.
@@ -42,11 +42,9 @@ import java.util.*;
public abstract class Language extends UserDataHolderBase {
private static final Logger LOG = Logger.getInstance("#com.intellij.lang.Language");
private static final Map<Class<? extends Language>, Language> ourRegisteredLanguages =
Collections.synchronizedMap(new THashMap<Class<? extends Language>, Language>());
private static final Map<String, List<Language>> ourRegisteredMimeTypes =
Collections.synchronizedMap(new THashMap<String, List<Language>>());
private static final Map<String, Language> ourRegisteredIDs = new THashMap<String, Language>();
private static final Map<Class<? extends Language>, Language> ourRegisteredLanguages = Collections.synchronizedMap(new THashMap<Class<? extends Language>, Language>());
private static final Map<String, List<Language>> ourRegisteredMimeTypes = Collections.synchronizedMap(new THashMap<String, List<Language>>());
private static final Map<String, Language> ourRegisteredIDs = Collections.synchronizedMap(new THashMap<String, Language>());
private final Language myBaseLanguage;
private final String myID;
private final String[] myMimeTypes;
@@ -105,6 +103,7 @@ public abstract class Language extends UserDataHolderBase {
/**
* @return collection of all languages registered so far.
*/
@NotNull
public static Collection<Language> getRegisteredLanguages() {
final Collection<Language> languages = ourRegisteredLanguages.values();
return Collections.unmodifiableCollection(new ArrayList<Language>(languages));
@@ -114,7 +113,7 @@ public abstract class Language extends UserDataHolderBase {
* @param klass <code>java.lang.Class</code> of the particular language. Serves key purpose.
* @return instance of the <code>klass</code> language registered if any.
*/
public static <T extends Language> T findInstance(Class<T> klass) {
public static <T extends Language> T findInstance(@NotNull Class<T> klass) {
//noinspection unchecked
return (T)ourRegisteredLanguages.get(klass);
}
@@ -125,11 +124,12 @@ public abstract class Language extends UserDataHolderBase {
*/
@NotNull
public static Collection<Language> findInstancesByMimeType(@Nullable String mimeType) {
List<Language> result = mimeType != null ? ourRegisteredMimeTypes.get(mimeType) : null;
return result != null ? Collections.unmodifiableCollection(result) : Collections.<Language>emptyList();
List<Language> result = mimeType == null ? null : ourRegisteredMimeTypes.get(mimeType);
return result == null ? Collections.<Language>emptyList() : Collections.unmodifiableCollection(result);
}
@Override
public String toString() {
//noinspection HardCodedStringLiteral
return "Language: " + myID;
@@ -177,6 +177,7 @@ public abstract class Language extends UserDataHolderBase {
return myBaseLanguage;
}
@NotNull
public String getDisplayName() {
return getID();
}
@@ -198,7 +199,7 @@ public abstract class Language extends UserDataHolderBase {
return false;
}
public final boolean isKindOf(String anotherLanguageId) {
public final boolean isKindOf(@NotNull String anotherLanguageId) {
Language l = this;
while (l != null) {
if (l.getID().equals(anotherLanguageId)) return true;
@@ -207,23 +208,18 @@ public abstract class Language extends UserDataHolderBase {
return false;
}
@NotNull
public List<Language> getDialects() {
return myDialects;
}
@Nullable
public static Language findLanguageByID(String id) {
final Collection<Language> languages = getRegisteredLanguages();
for (Language language : languages) {
if (language.getID().equals(id)) {
return language;
}
}
return null;
return id == null ? null : ourRegisteredIDs.get(id);
}
/** Fake language identifier without registering */
protected Language(String id, @SuppressWarnings("UnusedParameters") boolean register) {
protected Language(@NotNull String id, @SuppressWarnings("UnusedParameters") boolean register) {
myID = id;
myBaseLanguage = null;
myMimeTypes = null;