Example usage for org.eclipse.jdt.internal.codeassist CompletionEngine createDefaultParameterNames

Introduction

In this page you can find the example usage for org.eclipse.jdt.internal.codeassist CompletionEngine createDefaultParameterNames.

Prototype

public static char[][] createDefaultParameterNames(int length) 

Source Link

Usage

From source file:org.eclipse.recommenders.internal.completion.rcp.AccessibleCompletionProposals.java

License:Open Source License

public static Optional<AccessibleCompletionProposal> newMethodRef(IMethod method, int completionOffset,
        int prefixLength, int relevance) {

    String completion = method.getElementName() + "()";
    String[] params = method.getParameterTypes();
    String[] resolved = new String[params.length];
    IType declaringType = method.getDeclaringType();
    // boolean isVararg = Flags.isVarargs(method.getFlags());
    int lastParam = params.length - 1;
    for (int i = 0; i <= lastParam; i++) {
        String resolvedParam = params[i];
        String unresolvedParam = params[i];
        resolvedParam = resolveToBinary(unresolvedParam, declaringType).orNull();
        if (resolvedParam == null) {
            return Optional.absent();
        }/*from  w w w . j a  va 2  s  .  com*/
        resolved[i] = resolvedParam;
        // TODO no varargs support
    }

    String returnType;
    try {
        returnType = resolveToBinary(method.getReturnType(), declaringType).orNull();
    } catch (JavaModelException e) {
        e.printStackTrace();
        return Optional.absent();
    }
    if (returnType == null) { // e.g. a type parameter "QE;"
        return Optional.absent();
    }

    AccessibleCompletionProposal res = new AccessibleCompletionProposal(CompletionProposal.METHOD_REF,
            relevance);
    try {
        res.setFlags(method.getFlags());
    } catch (JavaModelException e1) {
        e1.printStackTrace();
    }
    res.setCompletion(completion.toCharArray());
    String declarationSignature = Signature
            .createTypeSignature(method.getDeclaringType().getFullyQualifiedName(), true);
    res.setDeclarationSignature(declarationSignature.toCharArray());
    String signature = Signature.createMethodSignature(resolved, returnType);
    res.setSignature(signature.toCharArray());
    res.setName(method.getElementName().toCharArray());
    res.setReplaceRange(completionOffset - prefixLength, completionOffset);

    char[][] paramNames = new char[params.length][];
    try {
        String[] parameterNames = method.getParameterNames();
        for (int i = 0; i < paramNames.length; i++) {
            paramNames[i] = parameterNames[i].toCharArray();
        }
    } catch (JavaModelException e) {
        e.printStackTrace();
        paramNames = CompletionEngine.createDefaultParameterNames(params.length);
    }
    res.setParameterNames(paramNames);

    res.setData(IMethod.class, method);
    res.setData(IJavaProject.class, method.getJavaProject());
    return of(res);
}

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