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JShellFileImpl.java
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JShellFileImpl.java
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// Copyright 2000-2024 JetBrains s.r.o. and contributors. Use of this source code is governed by the Apache 2.0 license.
package com.intellij.psi.impl.source;
import com.intellij.ide.highlighter.JShellFileType;
import com.intellij.lang.Language;
import com.intellij.lang.java.JShellLanguage;
import com.intellij.openapi.fileTypes.FileType;
import com.intellij.openapi.util.Condition;
import com.intellij.psi.*;
import com.intellij.util.SmartList;
import org.jetbrains.annotations.NotNull;
import java.util.Collection;
import java.util.List;
import static com.intellij.lang.java.JShellParserDefinition.FILE_ELEMENT_TYPE;
/**
* @author Eugene Zhuravlev
*/
public class JShellFileImpl extends PsiJavaFileBaseImpl implements PsiJShellFile {
public JShellFileImpl(FileViewProvider viewProvider) {
super(FILE_ELEMENT_TYPE, FILE_ELEMENT_TYPE, viewProvider);
}
@Override
public @NotNull Language getLanguage() {
return JShellLanguage.INSTANCE;
}
@Override
public @NotNull FileType getFileType() {
return JShellFileType.INSTANCE;
}
@Override
public boolean isPhysical() {
return getViewProvider().isPhysical();
}
@Override
public Collection<PsiElement> getExecutableSnippets() {
List<PsiElement> result = new SmartList<>();
collectExecutableSnippets(this, result);
return result;
}
private static void collectExecutableSnippets(PsiElement container, Collection<? super PsiElement> result) {
for (PsiElement child = container.getFirstChild(); child != null; child = child.getNextSibling()) {
if (child instanceof PsiJShellRootClass) {
collectExecutableSnippets(child, result);
}
else {
if (isExecutable(child)) {
result.add(child);
}
}
}
}
private static final Condition<PsiElement> EXECUTABLE_PREDICATE = elem -> elem != null && !(elem instanceof PsiWhiteSpace || elem instanceof PsiEmptyStatement || elem instanceof PsiComment);
private static boolean isExecutable(PsiElement element) {
if (element instanceof PsiJShellHolderMethod) {
for (PsiElement child = element.getFirstChild(); child != null; child = child.getNextSibling()) {
if (EXECUTABLE_PREDICATE.value(child)) {
return true;
}
}
return false;
}
return EXECUTABLE_PREDICATE.value(element);
}
}