private void updatePackageStatement(
CompilationUnit astCU, String[] pkgName, ASTRewrite rewriter, ICompilationUnit cu)
throws JavaModelException {
boolean defaultPackage = pkgName.length == 0;
AST ast = astCU.getAST();
if (defaultPackage) {
// remove existing package statement
PackageDeclaration pkg = astCU.getPackage();
if (pkg != null) {
int pkgStart;
Javadoc javadoc = pkg.getJavadoc();
if (javadoc != null) {
pkgStart = javadoc.getStartPosition() + javadoc.getLength() + 1;
} else {
pkgStart = pkg.getStartPosition();
}
int extendedStart = astCU.getExtendedStartPosition(pkg);
if (pkgStart != extendedStart) {
// keep the comments associated with package declaration
// see https://bugs.eclipse.org/bugs/show_bug.cgi?id=247757
String commentSource = cu.getSource().substring(extendedStart, pkgStart);
ASTNode comment =
rewriter.createStringPlaceholder(commentSource, ASTNode.PACKAGE_DECLARATION);
rewriter.set(astCU, CompilationUnit.PACKAGE_PROPERTY, comment, null);
} else {
rewriter.set(astCU, CompilationUnit.PACKAGE_PROPERTY, null, null);
}
}
} else {
org.eclipse.jdt.core.dom.PackageDeclaration pkg = astCU.getPackage();
if (pkg != null) {
// rename package statement
Name name = ast.newName(pkgName);
rewriter.set(pkg, PackageDeclaration.NAME_PROPERTY, name, null);
} else {
// create new package statement
pkg = ast.newPackageDeclaration();
pkg.setName(ast.newName(pkgName));
rewriter.set(astCU, CompilationUnit.PACKAGE_PROPERTY, pkg, null);
}
}
}
