Example usage for org.eclipse.jdt.core IMethod getNumberOfParameters

Introduction

In this page you can find the example usage for org.eclipse.jdt.core IMethod getNumberOfParameters.

Prototype

int getNumberOfParameters();

Source Link

Document

Returns the number of parameters of this method.

Usage

From source file:at.bestsolution.efxclipse.tooling.fxml.compile.FxmlAnnotationCompilationParticipant.java

License:Open Source License

/**
 * @param context//from   w  w  w . j  av  a2s .  co m
 */
private List<CategorizedProblem> checkCU(final ICompilationUnit unit,
        final Collection<CategorizedProblem> existingProblems) {
    List<CategorizedProblem> problems = new ArrayList<CategorizedProblem>();
    if (existingProblems != null) {
        problems.addAll(existingProblems);
    }
    List<String> fxmlMethods = new ArrayList<String>();
    try {
        IJavaProject project = unit.getJavaProject();
        for (IType type : unit.getTypes()) {
            for (IMethod method : type.getMethods()) {
                for (IAnnotation a : method.getAnnotations()) {
                    if ("FXML".equals(a.getElementName())) { ////$NON-NLS-1$
                        if (fxmlMethods.contains(method.getElementName())) {
                            DefaultProblem problem = new DefaultProblem(unit.getElementName().toCharArray(),
                                    "JavaFX controller method name is not unique: " //$NON-NLS-1$
                                            + method.getElementName(),
                                    IProblem.ExternalProblemNotFixable, new String[0],
                                    ProblemSeverities.Warning, method.getSourceRange().getOffset(),
                                    method.getSourceRange().getOffset() + method.getSourceRange().getLength(),
                                    getMethodLineNumber(type, method), 0);
                            problems.add(problem);
                        }
                        fxmlMethods.add(method.getElementName());

                        switch (method.getNumberOfParameters()) {
                        case 0:
                            break;
                        case 1: {
                            ILocalVariable pType = method.getParameters()[0];
                            String[][] resolvedType = type
                                    .resolveType(Signature.toString(pType.getTypeSignature()));
                            IType parameterType = null;
                            if (resolvedType != null) {
                                parameterType = project.findType(resolvedType[0][0] + "." + resolvedType[0][1]); //$NON-NLS-1$
                            }
                            if (resolvedType == null || !Util.assignable(parameterType,
                                    project.findType("javafx.event.Event"))) { ////$NON-NLS-1$
                                DefaultProblem problem = new DefaultProblem(unit.getElementName().toCharArray(),
                                        "Parameter '" //$NON-NLS-1$
                                                + pType.getElementName()
                                                + "' is not assignable to javafx.event.Event", //$NON-NLS-1$
                                        IProblem.ExternalProblemNotFixable, new String[0],
                                        ProblemSeverities.Warning, pType.getSourceRange().getOffset(),
                                        pType.getSourceRange().getOffset() + pType.getSourceRange().getLength(),
                                        getMethodLineNumber(type, method), 0);
                                problems.add(problem);
                            }

                        }
                            break;
                        default: {
                            DefaultProblem problem = new DefaultProblem(unit.getElementName().toCharArray(),
                                    "JavaFX controller method must have 0 or exactly 1 argument", //$NON-NLS-1$
                                    IProblem.ExternalProblemNotFixable, new String[0],
                                    ProblemSeverities.Warning, method.getSourceRange().getOffset(),
                                    method.getSourceRange().getOffset() + method.getSourceRange().getLength(),
                                    getMethodLineNumber(type, method), 0);
                            problems.add(problem);
                        }
                        }
                    }
                }
            }
        }
    } catch (JavaModelException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return problems;
}

---

From source file:at.bestsolution.fxide.jdt.corext.util.MethodOverrideTester.java

License:Open Source License

/**
 * Tests if a method is a subsignature of another method.
 * @param overriding overriding method (m1)
 * @param overridden overridden method (m2)
 * @return <code>true</code> iff the method <code>m1</code> is a subsignature of the method <code>m2</code>.
 *       This is one of the requirements for m1 to override m2.
 *       Accessibility and return types are not taken into account.
 *       Note that subsignature is <em>not</em> symmetric!
 * @throws JavaModelException if a problem occurs
 *//*from  ww  w. ja v  a 2 s .  co  m*/
public boolean isSubsignature(IMethod overriding, IMethod overridden) throws JavaModelException {
    if (!overridden.getElementName().equals(overriding.getElementName())) {
        return false;
    }
    int nParameters = overridden.getNumberOfParameters();
    if (nParameters != overriding.getNumberOfParameters()) {
        return false;
    }

    if (!hasCompatibleTypeParameters(overriding, overridden)) {
        return false;
    }

    return nParameters == 0 || hasCompatibleParameterTypes(overriding, overridden);
}

---

From source file:ca.mcgill.cs.swevo.jayfx.FastConverter.java

License:Open Source License

/**
 * Optimization to find an IMethod without having to resolve the parameters.
 * /*from ww w  . java2s .c  o m*/
 * @return the IMethod corresponding to a candidate. Null if none are found.
 */
private IJavaElement findMethod(final MethodElement pMethod, final IMethod[] pCandidates) {
    IJavaElement lReturn = null;

    final List<IMethod> lSimilar = new ArrayList<IMethod>();
    for (final IMethod element : pCandidates) {
        String lName = element.getElementName();
        try {
            if (element.isConstructor())
                lName = "<init>";
        } catch (final JavaModelException pException) {
            return null;
        }
        if (lName.equals(pMethod.getName()))
            if (element.getNumberOfParameters() == FastConverter.numberOfParams(pMethod.getParameters()))
                lSimilar.add(element);
    }
    if (lSimilar.size() == 1)
        lReturn = lSimilar.get(0);
    else
        for (int i = 0; i < lSimilar.size(); i++)
            try {
                if (this.getElement(lSimilar.get(i)) == pMethod)
                    lReturn = lSimilar.get(i);
            } catch (final ConversionException pException) {
                // nothing, the method will return null
            }

    return lReturn;
}

---

From source file:com.centurylink.mdw.plugin.designer.properties.OsgiAdapterDesignSection.java

License:Apache License

private List<String> getServiceMethodOptions() {
    List<String> options = new ArrayList<String>();
    WorkflowAsset asset = (WorkflowAsset) interfaceSelector.getWorkflowAsset();
    if (asset != null) {
        try {/*from w  ww.  j  ava 2  s .com*/
            ICompilationUnit unit = getCompilationUnit(asset);
            if (unit != null) {
                for (IType type : unit.getAllTypes()) {
                    for (IMethod method : type.getMethods()) {
                        String option = method.getElementName() + "(";
                        for (int i = 0; i < method.getNumberOfParameters(); i++) {
                            String paramType = method.getParameterTypes()[i];
                            option += paramType.substring(1, paramType.length() - 1) + " "
                                    + method.getParameterNames()[i];
                            if (i < method.getNumberOfParameters() - 1)
                                option += ", ";
                        }
                        option += ")";
                        options.add(option);
                    }
                }
            } else {
                options.add("Type must be opened to read methods");
            }
        } catch (JavaModelException ex) {
            PluginMessages.uiError(ex, "Service Methods", activity.getProject());
        }
    } else {
        options.add("");
    }

    return options;
}

---

From source file:com.ecfeed.ui.common.EclipseModelImplementer.java

License:Open Source License

@Override
protected boolean implementable(ChoiceNode node) {
    if (node.isAbstract()) {
        return hasImplementableNode(node.getChoices());
    }/*from  w  ww  .  j a  v  a 2 s  .  c  om*/
    if (parameterDefinitionImplemented(node.getParameter())) {
        try {
            IType type = getJavaProject().findType(node.getParameter().getType());
            if (type.isEnum() == false) {
                return false;
            }
            boolean hasConstructor = false;
            boolean hasParameterlessConstructor = false;
            for (IMethod constructor : type.getMethods()) {
                if (constructor.isConstructor() == false) {
                    continue;
                }
                hasConstructor = true;
                if (constructor.getNumberOfParameters() == 0) {
                    hasParameterlessConstructor = true;
                }
            }
            if (hasConstructor && (hasParameterlessConstructor == false)) {
                return false;
            }
        } catch (CoreException e) {
            return false;
        }
    } else {
        if (parameterDefinitionImplementable(node.getParameter()) == false) {
            return false;
        }
    }

    return JavaUtils.isValidJavaIdentifier(node.getValueString());
}

---

From source file:com.google.gdt.eclipse.appengine.rpc.util.CompilationUnitCreator.java

License:Open Source License

/**
 * Constructs the locator body//from www .  j av  a2 s . c  o m
 */
private void constructLocatorBody(IType type, ImportsManager imports, IProgressMonitor monitor)
        throws CoreException {

    List<IMethod> constructors = new ArrayList<IMethod>();
    boolean hasDefaultConstructor = false;
    for (IMethod method : current.getMethods()) {
        if (method.isConstructor()) {
            if ((method.getNumberOfParameters() == 0) && !Flags.isPrivate(method.getFlags())) {
                hasDefaultConstructor = true;
            }
            constructors.add(method);
        }
    }

    StringBuffer buf = new StringBuffer();
    buf.append("@Override").append(lineDelimiter); //$NON-NLS-N$
    buf.append("public ").append(current.getElementName()); //$NON-NLS-N$
    buf.append(" create(Class<? extends ").append(current.getElementName()).append( //$NON-NLS-1$
            "> clazz) {"); //$NON-NLS-2$
    buf.append(lineDelimiter);
    if (constructors.isEmpty() || hasDefaultConstructor) {
        buf.append("return new ").append(current.getElementName()).append("();"); //$NON-NLS-N$
    } else {
        buf.append("// TODO no default constructor, creation code cannot be generated"); //$NON-NLS-N$
        buf.append(lineDelimiter).append("throw new RuntimeException(String.format"); //$NON-NLS-N$
        buf.append("(\"Cannot instantiate %s\", clazz.getCanonicalName()));"); //$NON-NLS-N$
    }
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter); //$NON-NLS-N$
    buf.append("public ").append(current.getElementName()); //$NON-NLS-N$
    buf.append(" find(Class<? extends ").append(current.getElementName()).append( //$NON-NLS-1$
            "> clazz, Void id) {"); //$NON-NLS-2$
    buf.append(lineDelimiter);
    buf.append("return create(clazz);"); //$NON-NLS-N$
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter); //$NON-NLS-N$
    buf.append("public Class<").append(current.getElementName()); //$NON-NLS-N$
    buf.append("> getDomainType() {").append(lineDelimiter); //$NON-NLS-N$
    buf.append("return ").append(current.getElementName()).append(".class;"); //$NON-NLS-N$
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter); //$NON-NLS-N$
    buf.append("public ").append(entityIdType).append(" getId(").append( //$NON-NLS-1$//$NON-NLS-2$
            current.getElementName());
    buf.append(" domainObject) {").append(lineDelimiter); //$NON-NLS-N$
    if (entityIdType.equals("Void")) { //$NON-NLS-N$
        buf.append(" return null;"); //$NON-NLS-N$
    } else {
        buf.append("return domainObject.getId()"); //$NON-NLS-N$
    }
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter); //$NON-NLS-N$
    buf.append("public Class<").append(entityIdType).append("> getIdType() {"); //$NON-NLS-1$//$NON-NLS-2$
    buf.append(lineDelimiter);
    if (entityIdType.equals("Void")) { //$NON-NLS-N$
        buf.append("return Void.class;"); //$NON-NLS-N$
    } else {
        buf.append("return ").append(entityIdType).append(".class;"); //$NON-NLS-1$//$NON-NLS-2$
    }
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter); //$NON-NLS-N$
    buf.append("public Object getVersion(").append(current.getElementName()); //$NON-NLS-N$
    buf.append(" domainObject) {").append(lineDelimiter); //$NON-NLS-N$
    buf.append("return null;"); //$NON-NLS-N$
    buf.append(lineDelimiter).append("}");

    type.createMethod(buf.toString(), null, false, null);
    if (monitor != null) {
        monitor.done();
    }
}

---

From source file:com.google.gdt.eclipse.appengine.rpc.util.RequestFactoryUtils.java

License:Open Source License

private static boolean hasMethodThatReturns(IType type, String methodName, String returnType)
        throws JavaModelException {
    for (IMethod method : type.getMethods()) {
        if (method.getElementName().equals(methodName)) {
            if (method.getNumberOfParameters() == 0) {
                if (method.getReturnType().equals(returnType)) {
                    return true;
                }/*from w ww . j  ava  2  s  .c  om*/
            }
        }
    }
    return false;
}

---

From source file:com.google.gdt.eclipse.appengine.rpc.wizards.helpers.RpcServiceLayerCreator.java

License:Open Source License

private void constructLocatorBody(IType type, ImportsManager imports, IProgressMonitor monitor)
        throws CoreException {

    List<IMethod> constructors = new ArrayList<IMethod>();
    boolean hasDefaultConstructor = false;
    for (IMethod method : current.getMethods()) {
        if (method.isConstructor()) {
            if ((method.getNumberOfParameters() == 0) && !Flags.isPrivate(method.getFlags())) {
                hasDefaultConstructor = true;
            }//from   w  ww  .j  ava2s. com
            constructors.add(method);
        }
    }

    StringBuffer buf = new StringBuffer();
    buf.append("@Override").append(lineDelimiter);
    buf.append("public ").append(current.getElementName());
    buf.append(" create(Class<? extends ").append(current.getElementName()).append("> clazz) {");
    buf.append(lineDelimiter);
    if (constructors.isEmpty() || hasDefaultConstructor) {
        buf.append("return new ").append(current.getElementName()).append("();");
    } else {
        buf.append("// TODO no default constructor, creation code cannot be generated");
        buf.append(lineDelimiter).append("throw new RuntimeException(String.format");
        buf.append("(\"Cannot instantiate %s\", clazz.getCanonicalName()));");
    }
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter);
    buf.append("public ").append(current.getElementName());
    buf.append(" find(Class<? extends ").append(current.getElementName()).append("> clazz, Void id) {");
    buf.append(lineDelimiter);
    buf.append("return create(clazz);");
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter);
    buf.append("public Class<").append(current.getElementName());
    buf.append("> getDomainType() {").append(lineDelimiter);
    buf.append("return ").append(current.getElementName()).append(".class;");
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter);
    buf.append("public ").append(entityIdType).append(" getId(").append(current.getElementName());
    buf.append(" domainObject) {").append(lineDelimiter);
    if (entityIdType.equals("Void")) {
        buf.append(" return null;");
    } else {
        buf.append("return domainObject.getId()");
    }
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter);
    buf.append("public Class<").append(entityIdType).append("> getIdType() {");
    buf.append(lineDelimiter);
    if (entityIdType.equals("Void")) {
        buf.append("return Void.class;");
    } else {
        buf.append("return ").append(entityIdType).append(".class;");
    }
    buf.append(lineDelimiter).append("}").append(lineDelimiter);

    buf.append("@Override").append(lineDelimiter);
    buf.append("public Object getVersion(").append(current.getElementName());
    buf.append(" domainObject) {").append(lineDelimiter);
    buf.append("return null;");
    buf.append(lineDelimiter).append("}");

    type.createMethod(buf.toString(), null, false, null);
    if (monitor != null) {
        monitor.done();
    }
}

---

From source file:com.halware.nakedide.eclipse.core.util.MethodUtils.java

License:Open Source License

public static boolean hasZeroParameters(IMethod method) {
    return method.getNumberOfParameters() == 0;
}

---

From source file:edu.brown.cs.bubbles.bedrock.BedrockUtil.java

License:Open Source License

private static void outputSymbol(IJavaElement elt, String what, String nm, String key, IvyXmlWriter xw) {
    if (what == null || nm == null)
        return;/* w ww .ja  v a 2s . co  m*/

    xw.begin("ITEM");
    xw.field("TYPE", what);
    xw.field("NAME", nm);
    xw.field("HANDLE", elt.getHandleIdentifier());

    xw.field("WORKING", (elt.getPrimaryElement() != elt));
    ICompilationUnit cu = (ICompilationUnit) elt.getAncestor(IJavaElement.COMPILATION_UNIT);
    if (cu != null) {
        xw.field("CUWORKING", cu.isWorkingCopy());
    }
    try {
        xw.field("KNOWN", elt.isStructureKnown());
    } catch (JavaModelException e) {
    }

    if (elt instanceof ISourceReference) {
        try {
            ISourceRange rng = ((ISourceReference) elt).getSourceRange();
            if (rng != null) {
                xw.field("STARTOFFSET", rng.getOffset());
                xw.field("ENDOFFSET", rng.getOffset() + rng.getLength());
                xw.field("LENGTH", rng.getLength());
            }
        } catch (JavaModelException e) {
            BedrockPlugin.logE("Problem getting source range: " + e);
        }
    }

    if (elt instanceof ILocalVariable) {
        ILocalVariable lcl = (ILocalVariable) elt;
        xw.field("SIGNATURE", lcl.getTypeSignature());
    }

    if (elt instanceof IMember) {
        try {
            IMember mem = ((IMember) elt);
            int fgs = mem.getFlags();
            if (mem.getParent() instanceof IType && !(elt instanceof IType)) {
                IType par = (IType) mem.getParent();
                if (par.isInterface()) {
                    if (elt instanceof IMethod)
                        fgs |= Flags.AccAbstract;
                    fgs |= Flags.AccPublic;
                }
                xw.field("QNAME", par.getFullyQualifiedName() + "." + nm);
            }
            xw.field("FLAGS", fgs);
        } catch (JavaModelException e) {
        }
    }

    if (elt instanceof IPackageFragment || elt instanceof IType) {
        Display d = BedrockApplication.getDisplay();
        if (d != null) {
            JavadocUrl ju = new JavadocUrl(elt);
            d.syncExec(ju);
            URL u = ju.getResult();
            if (u != null) {
                xw.field("JAVADOC", u.toString());
            }
        }
    }

    xw.field("SOURCE", "USERSOURCE");
    if (key != null)
        xw.field("KEY", key);

    boolean havepath = false;
    for (IJavaElement pe = elt.getParent(); pe != null; pe = pe.getParent()) {
        if (pe.getElementType() == IJavaElement.COMPILATION_UNIT) {
            IProject ip = elt.getJavaProject().getProject();
            File f = BedrockUtil.getFileForPath(elt.getPath(), ip);
            xw.field("PATH", f.getAbsolutePath());
            havepath = true;
            break;
        }
    }
    IJavaProject ijp = elt.getJavaProject();
    if (ijp != null)
        xw.field("PROJECT", ijp.getProject().getName());
    IPath p = elt.getPath();
    if (p != null) {
        xw.field("XPATH", p);
        if (!havepath) {
            IProject ip = elt.getJavaProject().getProject();
            File f = getFileForPath(elt.getPath(), ip);
            xw.field("PATH", f.getAbsolutePath());
        }
    }

    if (elt instanceof IMethod) {
        IMethod m = (IMethod) elt;
        try {
            xw.field("RESOLVED", m.isResolved());
            ISourceRange rng = m.getNameRange();
            if (rng != null) {
                xw.field("NAMEOFFSET", rng.getOffset());
                xw.field("NAMELENGTH", rng.getLength());
            }
            xw.field("RETURNTYPE", m.getReturnType());
            xw.field("NUMPARAM", m.getNumberOfParameters());
            String[] pnms = m.getParameterNames();
            String[] ptys = m.getParameterTypes();
            for (int i = 0; i < ptys.length; ++i) {
                xw.begin("PARAMETER");
                if (i < pnms.length)
                    xw.field("NAME", pnms[i]);
                xw.field("TYPE", ptys[i]);
                xw.end();
            }
            for (String ex : m.getExceptionTypes()) {
                xw.begin("EXCEPTION");
                xw.field("TYPE", ex);
                xw.end();
            }
        } catch (JavaModelException e) {
        }
    }

    // TODO: output parameters as separate elements with type and name

    if (elt instanceof IAnnotatable) {
        IAnnotatable ann = (IAnnotatable) elt;
        try {
            IAnnotation[] ans = ann.getAnnotations();
            for (IAnnotation an : ans) {
                xw.begin("ANNOTATION");
                xw.field("NAME", an.getElementName());
                xw.field("COUNT", an.getOccurrenceCount());
                try {
                    for (IMemberValuePair mvp : an.getMemberValuePairs()) {
                        xw.begin("VALUE");
                        xw.field("NAME", mvp.getMemberName());
                        if (mvp.getValue() != null)
                            xw.field("VALUE", mvp.getValue().toString());
                        xw.field("KIND", mvp.getValueKind());
                        xw.end("VALUE");
                    }
                } catch (JavaModelException e) {
                }
                xw.end("ANNOTATION");
            }
        } catch (JavaModelException e) {
        }
    }

    xw.end("ITEM");
}

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