public static boolean hasJavaLangImportConflict(String fqName, PsiJavaFile file) {
final String shortName = ClassUtil.extractClassName(fqName);
final String packageName = ClassUtil.extractPackageName(fqName);
if (HardcodedMethodConstants.JAVA_LANG.equals(packageName)) {
return false;
}
final Project project = file.getProject();
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiPackage javaLangPackage = psiFacade.findPackage(HardcodedMethodConstants.JAVA_LANG);
if (javaLangPackage == null) {
return false;
}
return javaLangPackage.containsClassNamed(shortName);
}
public static boolean hasDefaultImportConflict(String fqName, PsiJavaFile file) {
final String shortName = ClassUtil.extractClassName(fqName);
final String packageName = ClassUtil.extractPackageName(fqName);
final String filePackageName = file.getPackageName();
if (filePackageName.equals(packageName)) {
return false;
}
final Project project = file.getProject();
final JavaPsiFacade psiFacade = JavaPsiFacade.getInstance(project);
final PsiPackage filePackage = psiFacade.findPackage(filePackageName);
if (filePackage == null) {
return false;
}
return filePackage.containsClassNamed(shortName);
}
/**
* @param strict if strict is true this method checks if the conflicting class which is imported
* is actually used in the file. If it isn't the on demand import can be overridden with an
* exact import for the fqName without breaking stuff.
*/
private static boolean hasOnDemandImportConflict(
@NotNull String fqName, @NotNull PsiJavaFile file, boolean strict) {
final PsiImportList imports = file.getImportList();
if (imports == null) {
return false;
}
final PsiImportStatement[] importStatements = imports.getImportStatements();
final String shortName = ClassUtil.extractClassName(fqName);
final String packageName = ClassUtil.extractPackageName(fqName);
for (final PsiImportStatement importStatement : importStatements) {
if (!importStatement.isOnDemand()) {
continue;
}
final PsiJavaCodeReferenceElement importReference = importStatement.getImportReference();
if (importReference == null) {
continue;
}
final String packageText = importReference.getText();
if (packageText.equals(packageName)) {
continue;
}
final PsiElement element = importReference.resolve();
if (!(element instanceof PsiPackage)) {
continue;
}
final PsiPackage aPackage = (PsiPackage) element;
if (!strict && aPackage.containsClassNamed(shortName)) {
return true;
} else {
final PsiClass[] classes = aPackage.findClassByShortName(shortName, file.getResolveScope());
for (final PsiClass aClass : classes) {
final String qualifiedClassName = aClass.getQualifiedName();
if (qualifiedClassName == null || fqName.equals(qualifiedClassName)) {
continue;
}
return containsConflictingReference(file, qualifiedClassName);
}
}
}
return hasJavaLangImportConflict(fqName, file);
}