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The missing bridge between Java and native C++
/*
* Copyright (C) 2014-2015 Samuel Audet
*
* Licensed either under the Apache License, Version 2.0, or (at your option)
* under the terms of the GNU General Public License as published by
* the Free Software Foundation (subject to the "Classpath" exception),
* either version 2, or any later version (collectively, 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
* http://www.gnu.org/licenses/
* http://www.gnu.org/software/classpath/license.html
*
* or as provided in the LICENSE.txt file that accompanied this code.
* 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.bytedeco.javacpp.tools;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
*
* @author Samuel Audet
*/
class Context {
Context() {
usingList = new ArrayList();
namespaceMap = new HashMap();
}
Context(Context c) {
namespace = c.namespace;
cppName = c.cppName;
javaName = c.javaName;
inaccessible = c.inaccessible;
variable = c.variable;
infoMap = c.infoMap;
templateMap = c.templateMap;
usingList = c.usingList;
namespaceMap = c.namespaceMap;
}
String namespace = null;
String cppName = null;
String javaName = null;
boolean inaccessible = false;
boolean virtualize = false;
Declarator variable = null;
InfoMap infoMap = null;
TemplateMap templateMap = null;
List usingList = null;
Map namespaceMap = null;
/** Return all likely combinations of namespaces and template arguments for this C++ type */
String[] qualify(String cppName) {
if (cppName == null || cppName.length() == 0) {
return new String[0];
}
for (Map.Entry e : namespaceMap.entrySet()) {
cppName = cppName.replaceAll(e.getKey() + "::", e.getValue() + "::");
}
if (cppName.startsWith("::")) {
// already in global namespace, so strip leading operator
return new String[] { cppName.substring(2) };
}
List names = new ArrayList();
String ns = namespace != null ? namespace : "";
while (ns != null) {
String name = ns.length() > 0 ? ns + "::" + cppName : cppName;
TemplateMap map = templateMap;
while (map != null) {
if (name.equals(map.getName())) {
String args = "<", separator = "";
for (Type t : map.values()) {
args += separator + (t != null ? t.cppName : t);
separator = ",";
}
names.add(name + args + (args.endsWith(">") ? " >" : ">"));
break;
}
map = map.parent;
}
names.add(name);
ns = infoMap.normalize(ns, false, true);
int i = ns.lastIndexOf("::");
ns = i >= 0 ? ns.substring(0, i) : ns.length() > 0 ? "" : null;
}
for (String s : usingList) {
String prefix = infoMap.normalize(cppName, false, true);
int i = s.lastIndexOf("::") + 2;
ns = s.substring(0, i);
String suffix = s.substring(i);
if (suffix.length() == 0 || prefix.equals(suffix)) {
names.add(ns + cppName);
}
}
return names.toArray(new String[names.size()]);
}
/** Shorten a qualified Java name, given the Context */
String shorten(String javaName) {
if (this.javaName != null) {
int lastDot = 0;
String s1 = javaName, s2 = this.javaName + '.';
for (int i = 0; i < s1.length() && i < s2.length(); i++) {
if (s1.charAt(i) != s2.charAt(i)) {
break;
} else if (s1.charAt(i) == '.') {
lastDot = i;
}
}
if (lastDot > 0) {
javaName = javaName.substring(lastDot + 1);
}
}
return javaName;
}
}