if (mapper != null) {
char[][] paramNames = mapper.getMethodParameterNames(this);
// map source and try to find parameter names
if(paramNames == null) {
IBinaryType info = (IBinaryType) ((BinaryType) getDeclaringType()).getElementInfo();
char[] source = mapper.findSource(type, info);
if (source != null){
mapper.mapSource(type, source, info);
}
paramNames = mapper.getMethodParameterNames(this);
}
// if parameter names exist, convert parameter names to String array
if(paramNames != null) {
String[] names = new String[paramNames.length];
for (int i = 0; i < paramNames.length; i++) {
names[i] = new String(paramNames[i]);
}
return this.parameterNames = names;
}
}
// try to see if we can retrieve the names from the attached javadoc
IBinaryMethod info = (IBinaryMethod) getElementInfo();
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=316937
// Use Signature#getParameterCount() only if the argument names are not already available.
int paramCount = Signature.getParameterCount(new String(info.getMethodDescriptor()));
if (this.isConstructor()) {
final IType declaringType = this.getDeclaringType();
if (declaringType.isMember()
&& !Flags.isStatic(declaringType.getFlags())) {
paramCount--; // remove synthetic argument from constructor param count
}
}
if (paramCount != 0) {
// don't try to look for javadoc for synthetic methods
int modifiers = getFlags();
if ((modifiers & ClassFileConstants.AccSynthetic) != 0) {
return this.parameterNames = getRawParameterNames(paramCount);
}
JavadocContents javadocContents = null;
IType declaringType = getDeclaringType();
PerProjectInfo projectInfo = JavaModelManager.getJavaModelManager().getPerProjectInfoCheckExistence(getJavaProject().getProject());
synchronized (projectInfo.javadocCache) {
javadocContents = (JavadocContents) projectInfo.javadocCache.get(declaringType);
if (javadocContents == null) {
projectInfo.javadocCache.put(declaringType, BinaryType.EMPTY_JAVADOC);
}
}
String methodDoc = null;
if (javadocContents == null) {
long timeOut = 50; // default value
try {
String option = getJavaProject().getOption(JavaCore.TIMEOUT_FOR_PARAMETER_NAME_FROM_ATTACHED_JAVADOC, true);
if (option != null) {
timeOut = Long.parseLong(option);
}
} catch(NumberFormatException e) {
// ignore
}
if (timeOut == 0) {
// don't try to fetch the values and don't cache either (https://bugs.eclipse.org/bugs/show_bug.cgi?id=329671)
return getRawParameterNames(paramCount);
}
final class ParametersNameCollector {
String javadoc;
public void setJavadoc(String s) {
this.javadoc = s;
}
public String getJavadoc() {
return this.javadoc;
}
}
/*
* The declaring type is not in the cache yet. The thread wil retrieve the javadoc contents
*/
final ParametersNameCollector nameCollector = new ParametersNameCollector();
Thread collect = new Thread() {
public void run() {
try {
// this call has a side-effect on the per project info cache
nameCollector.setJavadoc(BinaryMethod.this.getAttachedJavadoc(null));
} catch (JavaModelException e) {
// ignore
}
synchronized(nameCollector) {
nameCollector.notify();
}
}
};
collect.start();
synchronized(nameCollector) {
try {
nameCollector.wait(timeOut);
} catch (InterruptedException e) {
// ignore
}
}
methodDoc = nameCollector.getJavadoc();
} else if (javadocContents != BinaryType.EMPTY_JAVADOC){
// need to extract the part relative to the binary method since javadoc contains the javadoc for the declaring type
try {
methodDoc = javadocContents.getMethodDoc(this);
} catch(JavaModelException e) {
javadocContents = null;
}
}
if (methodDoc != null) {
final int indexOfOpenParen = methodDoc.indexOf('(');
if (indexOfOpenParen != -1) {
final int indexOfClosingParen = methodDoc.indexOf(')', indexOfOpenParen);
if (indexOfClosingParen != -1) {
final char[] paramsSource =
CharOperation.replace(
methodDoc.substring(indexOfOpenParen + 1, indexOfClosingParen).toCharArray(),
" ".toCharArray(), //$NON-NLS-1$
new char[] {' '});
final char[][] params = splitParameters(paramsSource, paramCount);
final int paramsLength = params.length;
String[] names = new String[paramsLength];
for (int i = 0; i < paramsLength; i++) {
final char[] param = params[i];
int indexOfSpace = CharOperation.lastIndexOf(' ', param);
if (indexOfSpace != -1) {
names[i] = String.valueOf(param, indexOfSpace + 1, param.length - indexOfSpace -1);
} else {
names[i] = "arg" + i; //$NON-NLS-1$
}
}
return this.parameterNames = names;
}
}
}
// let's see if we can retrieve them from the debug infos
char[][] argumentNames = info.getArgumentNames();
if (argumentNames != null && argumentNames.length == paramCount) {
String[] names = new String[paramCount];
for (int i = 0; i < paramCount; i++) {
names[i] = new String(argumentNames[i]);
}