public static String getMatchedPackage(String className, ICompilationUnit cUnit)
throws JavaModelException {
int higherAccuracy = 0;
String matchedPackage = cUnit.getPackageDeclarations()[0].getElementName();
IImportDeclaration[] imports = cUnit.getImports();
for (IImportDeclaration impDec : imports) {
String fullName = impDec.getElementName();
int dotIndex = fullName.lastIndexOf('.');
String lastNameOfImport = fullName.substring(dotIndex + 1);
if (lastNameOfImport.equals(className) && higherAccuracy < 2) {
matchedPackage = fullName.substring(0, dotIndex);
higherAccuracy = 2;
} else if (lastNameOfImport.equals("*") && higherAccuracy < 1) {
matchedPackage = fullName.substring(0, dotIndex);
higherAccuracy = 1;
}
}
if (higherAccuracy > 0) return matchedPackage;
if (cUnit.getType(className) != null) return cUnit.getPackageDeclarations()[0].getElementName();
return "java.lang";
}
/**
* Determines if the supplied src file contains an import for the supplied type (including
* wildcard .* imports).
*
* @param src The compilation unit.
* @param type The type.
* @return true if the src file has a qualifying import.
*/
public static boolean containsImport(ICompilationUnit src, IType type) throws Exception {
String typePkg = type.getPackageFragment().getElementName();
IPackageDeclaration[] packages = src.getPackageDeclarations();
String pkg = packages.length > 0 ? packages[0].getElementName() : null;
// classes in same package are auto imported.
if ((pkg == null && typePkg == null) || (pkg != null && pkg.equals(typePkg))) {
return true;
}
// java.lang is auto imported.
if (JAVA_LANG.equals(typePkg)) {
return true;
}
typePkg = typePkg + ".*";
String typeName = type.getFullyQualifiedName().replace('$', '.');
IImportDeclaration[] imports = src.getImports();
for (int ii = 0; ii < imports.length; ii++) {
String name = imports[ii].getElementName();
if (name.equals(typeName) || name.equals(typePkg)) {
return true;
}
}
return false;
}
/**
* Gets the fully qualified class name for an active file. For example, its value is foo.bar.Baz.
*
* @param file Get fully qualified class file.
* @return The fully qualified class name. For example,foo.bar.Baz.
*/
private String getFullyQualifedClassName(IFile file) {
String fullClassName = "";
if (file.exists() && file.getName().endsWith(EclipseSensorConstants.JAVA_EXT)) {
ICompilationUnit compilationUnit = (ICompilationUnit) JavaCore.create(file);
String className = compilationUnit.getElementName();
if (className.endsWith(EclipseSensorConstants.JAVA_EXT)) {
className = className.substring(0, className.length() - 5);
}
try {
IPackageDeclaration[] packageDeclarations = compilationUnit.getPackageDeclarations();
// Should only have one package declaration
if (packageDeclarations == null || packageDeclarations.length == 0) {
fullClassName = className;
} else {
fullClassName = packageDeclarations[0].getElementName() + '.' + className;
}
} catch (JavaModelException e) {
// This exception will be thrown if user is working on a Java but did not open
// it with "Java Perspective". Thus, the Java Model does not exist to parse
// Java files. So we only log out exception while Eclipse's Java Perspective
// exits.
if (!e.isDoesNotExist()) {
EclipseSensorPlugin.getDefault().log(file.getName(), e);
}
}
}
return fullClassName;
}
