Example usage for org.eclipse.jdt.internal.core JavaElement JEM

Introduction

In this page you can find the example usage for org.eclipse.jdt.internal.core JavaElement JEM_ESCAPE.

Prototype

char JEM_ESCAPE

To view the source code for org.eclipse.jdt.internal.core JavaElement JEM_ESCAPE.

Click Source Link

Usage

From source file:org.eclipse.ajdt.core.AJMementoTokenizer.java

License:Open Source License

public String nextToken() {
    int start = this.index;
    StringBuffer buffer = null;/*from  w w w  .j a v  a 2  s  . co m*/
    switch (this.memento[this.index++]) {
    case JavaElement.JEM_ESCAPE:
        buffer = new StringBuffer();
        buffer.append(this.memento[this.index]);
        start = ++this.index;
        break;
    case JavaElement.JEM_COUNT:
        return COUNT;
    case JavaElement.JEM_JAVAPROJECT:
        return JAVAPROJECT;
    case JavaElement.JEM_PACKAGEFRAGMENTROOT:
        return PACKAGEFRAGMENTROOT;
    case JavaElement.JEM_PACKAGEFRAGMENT:
        return PACKAGEFRAGMENT;
    case JavaElement.JEM_FIELD:
        return FIELD;
    case JavaElement.JEM_METHOD:
        return METHOD;
    case JavaElement.JEM_INITIALIZER:
        return INITIALIZER;
    case JavaElement.JEM_COMPILATIONUNIT:
        return COMPILATIONUNIT;
    case JavaElement.JEM_CLASSFILE:
        return CLASSFILE;
    case JavaElement.JEM_TYPE:
        return TYPE;
    case JavaElement.JEM_PACKAGEDECLARATION:
        return PACKAGEDECLARATION;
    case JavaElement.JEM_IMPORTDECLARATION:
        return IMPORTDECLARATION;
    case JavaElement.JEM_LOCALVARIABLE:
        return LOCALVARIABLE;
    case JavaElement.JEM_TYPE_PARAMETER:
        return TYPE_PARAMETER;
    case JavaElement.JEM_ANNOTATION:
        return ANNOTATION;
    // begin AspectJ change
    case AspectElement.JEM_ADVICE:
        return ADVICE;
    case AspectElement.JEM_ASPECT_TYPE:
        return ASPECT_TYPE;
    case AspectElement.JEM_CODEELEMENT:
        return CODEELEMENT;
    case AspectElement.JEM_ITD_METHOD:
        return ITD_METHOD;
    case AspectElement.JEM_ITD_FIELD:
        return ITD_FIELD;
    case AspectElement.JEM_DECLARE:
        return DECLARE;
    case AspectElement.JEM_POINTCUT:
        return POINTCUT;

    case AspectElement.JEM_ASPECT_CU:
        // only return here if JDT weaving is off
        // if JDT weaving is on, then a * here
        // means that we are in an on demand import declaration
        if (!AspectJPlugin.USING_CU_PROVIDER) {
            return ASPECT_CU;
        }
        // end AspectJ change
    }
    loop: while (this.index < this.length) {
        switch (this.memento[this.index]) {
        case JavaElement.JEM_ESCAPE:
            if (buffer == null)
                buffer = new StringBuffer();
            buffer.append(this.memento, start, this.index - start);
            start = ++this.index;
            break;
        case JavaElement.JEM_COUNT:
        case JavaElement.JEM_JAVAPROJECT:
        case JavaElement.JEM_PACKAGEFRAGMENTROOT:
        case JavaElement.JEM_PACKAGEFRAGMENT:
        case JavaElement.JEM_FIELD:
        case JavaElement.JEM_METHOD:
        case JavaElement.JEM_INITIALIZER:
        case JavaElement.JEM_COMPILATIONUNIT:
        case JavaElement.JEM_CLASSFILE:
        case JavaElement.JEM_TYPE:
        case JavaElement.JEM_PACKAGEDECLARATION:
        case JavaElement.JEM_IMPORTDECLARATION:
        case JavaElement.JEM_LOCALVARIABLE:
        case JavaElement.JEM_TYPE_PARAMETER:
        case JavaElement.JEM_ANNOTATION:
            // begin AspectJ change
        case AspectElement.JEM_ADVICE:
        case AspectElement.JEM_ASPECT_TYPE:
        case AspectElement.JEM_CODEELEMENT:
        case AspectElement.JEM_ITD_METHOD:
        case AspectElement.JEM_ITD_FIELD:
        case AspectElement.JEM_DECLARE:
        case AspectElement.JEM_POINTCUT:
            break loop;
        // end AspectJ change

        // begin AspectJ change
        case AspectElement.JEM_ASPECT_CU:
            // only break here if JDT weaving is off
            // if JDT weaving is on, then a * here
            // means that we are in an on demand import declaration
            if (!AspectJPlugin.USING_CU_PROVIDER) {
                break loop;
            }
            // end AspectJ change
        }
        this.index++;
    }
    if (buffer != null) {
        buffer.append(this.memento, start, this.index - start);
        return buffer.toString();
    }
    return new String(this.memento, start, this.index - start);
}

From source file:org.eclipse.ajdt.core.AspectJCore.java

License:Open Source License

private static int indexOfIgnoringEscapes(String str, char ch) {
    boolean prevEscape = false;
    for (int i = 0; i < str.length(); i++) {
        char c = str.charAt(i);
        if (c == JavaElement.JEM_ESCAPE) {
            prevEscape = true;//  ww w.j  a v  a2  s .  c  o  m
        } else {
            if ((c == ch) && (!prevEscape)) {
                return i;
            }
            prevEscape = false;
        }
    }
    return -1;
}

From source file:org.eclipse.ajdt.core.model.AJProjectModelFacade.java

License:Open Source License

/**
 * @return a program element that corresponds to the given java element.
 *//*from w  w  w  .  java  2s.co  m*/
public IProgramElement javaElementToProgramElement(IJavaElement je) {
    if (!isInitialized) {
        return IHierarchy.NO_STRUCTURE;
    }
    String ajHandle = je.getHandleIdentifier();

    boolean isBinary = false;
    if (isBinaryHandle(ajHandle) || je.isReadOnly()) {
        ajHandle = convertToAspectJBinaryHandle(ajHandle, false);
        isBinary = true;
    } else if (isFromExternalProject(je)) {
        ajHandle = convertToAspectJBinaryHandle(ajHandle, true);
        isBinary = true;
    }

    // check to see if we need to replace { (compilation unit) with * (aj compilation unit)
    // if using cuprovider, then aj compilation units have {, but needs to change to *
    ICompilationUnit cu = null;
    if (je instanceof IMember) {
        cu = ((IMember) je).getCompilationUnit();
    } else if (je instanceof IPackageDeclaration) {
        IJavaElement parent = ((IPackageDeclaration) je).getParent();
        if (parent instanceof ICompilationUnit) {
            cu = (ICompilationUnit) parent;
        }
    } else if (je instanceof AJCodeElement) {
        cu = ((AJCodeElement) je).getCompilationUnit();
        // get the occurence count 
        int count = ((AJCodeElement) je).occurrenceCount;
        // need the first bang after the last close paren
        int lastParen = ajHandle.lastIndexOf(')');
        int firstBang = ajHandle.indexOf(JavaElement.JEM_COUNT, lastParen);
        if (firstBang > -1) {
            ajHandle = ajHandle.substring(0, firstBang);
            if (count > 1) {
                // there is more than one element
                // with this name
                ajHandle += "" + JavaElement.JEM_COUNT + count;
            }
        }

    } else if (je instanceof ILocalVariable) {
        IOpenable openable = ((ILocalVariable) je).getOpenable();
        cu = openable instanceof ICompilationUnit ? (ICompilationUnit) openable : null;
    } else if (je instanceof ImportDeclaration) {
        cu = ((ImportDeclaration) je).getCompilationUnit();
    } else if (je instanceof ImportContainer) {
        cu = ((ImportContainer) je).getCompilationUnit();
    } else if (je instanceof ICompilationUnit) {
        cu = (ICompilationUnit) je;
    }
    if (cu != null) {
        IResource resource = cu.getResource();
        if (resource != null && resource.exists()
                && CoreUtils.ASPECTJ_SOURCE_ONLY_FILTER.accept(resource.getName())) {
            ajHandle = ajHandle.replaceFirst("" + JavaElement.JEM_ESCAPE + JavaElement.JEM_COMPILATIONUNIT,
                    Character.toString(AspectElement.JEM_ASPECT_CU));
        }
    }

    IProgramElement ipe = structureModel.findElementForHandleOrCreate(ajHandle, false);
    if (ipe == null) {
        if (isBinary) {
            // might be an aspect in a class file.  JDT doesn't know it is an aspect
            // try looking for handle again, but use an Aspect token
            // problem will be if this is an aspect contained in a class or vice versa
            ajHandle = ajHandle.replace(JavaElement.JEM_TYPE, AspectElement.JEM_ASPECT_TYPE);
            ipe = structureModel.findElementForHandleOrCreate(ajHandle, false);
        }
        if (ipe == null) {
            // occurs when the handles are not working properly
            return IHierarchy.NO_STRUCTURE;
        }
    }
    return ipe;
}

From source file:org.eclipse.ajdt.core.model.AJProjectModelFacade.java

License:Open Source License

public IJavaElement programElementToJavaElement(String ajHandle) {
    // check to see if this is a spurious handle. 
    // For ITDs, the aspectj compiler generates program elements before the
    // rest of the program is in place, and they therfore have no parent.
    // They should not exist and we can ignore them.
    if (ajHandle.length() == 0 || ajHandle.charAt(0) != JavaElement.JEM_JAVAPROJECT) {
        return ERROR_JAVA_ELEMENT;
    }/*from   ww w  . j ava  2 s. c o m*/

    String jHandle = ajHandle;

    // are we dealing with something inside of a classfile?
    // if so, then we have to handle it specially
    // because we want to convert this into a source reference if possible
    if (isBinaryAspectJHandle(jHandle)) {
        // Bug 274558 ADE HACK...fix aspect handles that are supposed to be binary, but are not.
        jHandle = jHandle.replace(AspectElement.JEM_ASPECT_CU, JavaElement.JEM_CLASSFILE);
        jHandle = jHandle.replace(".aj" + JEM_ASPECT_TYPE, ".class" + JEM_ASPECT_TYPE);
        return getElementFromClassFile(jHandle);
    }

    // if using cuprovider, then we don not use the '*' for Aspect compilation units,
    // it uses the '{' of Java Compilation Units
    if (AspectJPlugin.USING_CU_PROVIDER) {
        jHandle = jHandle.replaceFirst("" + JavaElement.JEM_ESCAPE + AspectElement.JEM_ASPECT_CU,
                Character.toString(JavaElement.JEM_COMPILATIONUNIT));
    }

    int codeEltIndex = jHandle.indexOf(AspectElement.JEM_CODEELEMENT);
    if (codeEltIndex != -1) {
        // because code elements are sub classes of local variables
        // must make the code element's handle look like a local
        // variable's handle
        int countIndex = jHandle.lastIndexOf(JavaElement.JEM_COUNT);
        int count = 0;
        if (countIndex > codeEltIndex) {
            try {
                count = Integer.parseInt(jHandle.substring(countIndex + 1));
                jHandle = jHandle.substring(0, countIndex);
            } catch (NumberFormatException e) {
                // if the count is not from the code element, but from one of its parents
                count = 0;
            }
        }
        jHandle += "!0!0!0!0!I!0!false";
        if (count > 1) {
            jHandle += "" + JavaElement.JEM_COUNT + count;
        }
    }

    // add escapes to various sundries
    jHandle = jHandle.replaceFirst("declare @", "declare \\\\@"); // declare declarations
    jHandle = jHandle.replaceFirst("\\.\\*", ".\\\\*"); // on demand imports
    jHandle = jHandle.replaceAll("\\*>", "\\\\*>"); // wild card type parameters

    IJavaElement je = AspectJCore.create(jHandle);
    if (je == null) {
        // occurs when the handles are not working properly
        return ERROR_JAVA_ELEMENT;
    }
    return je;
}

Example usage for org.eclipse.jdt.internal.core JavaElement JEM_ESCAPE

Introduction

Prototype

Usage