FunctionNamespacesExtractor.java example

Explorer
intellij-xquery-master
/*
 * Copyright 2013-2015 Grzegorz Ligas <ligasgr@gmail.com> and other contributors
 * (see the CONTRIBUTORS file).
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.intellij.xquery.inspection;

import org.intellij.xquery.psi.XQueryFile;
import org.intellij.xquery.psi.XQueryFunctionInvocation;
import org.intellij.xquery.psi.XQueryPrefix;

import java.util.HashSet;
import java.util.Set;

public class FunctionNamespacesExtractor {

    public Set<String> getNamespacesUsedByFunctions(XQueryFile xQueryFile) {
        Set<String> usedNamespaces = new HashSet<String>();
        for (XQueryFunctionInvocation functionInvocation : xQueryFile.getFunctionInvocations()) {
            XQueryPrefix namespacePrefix = functionInvocation.getFunctionName().getPrefix();
            String namespacePrefixText = namespacePrefix != null ? namespacePrefix.getText() : null;
            String functionNamespace = xQueryFile.mapFunctionPrefixToNamespace(namespacePrefixText);
            usedNamespaces.add(functionNamespace);
        }
        return usedNamespaces;
    }
}