Example usage for org.eclipse.jdt.internal.compiler.parser Scanner Scanner

Introduction

In this page you can find the example usage for org.eclipse.jdt.internal.compiler.parser Scanner Scanner.

Prototype

public Scanner() 

Source Link

Usage

From source file:org.caesarj.ui.javamodel.AspectsConvertingParser.java

License:Open Source License

public ArrayList convert(ConversionOptions options) {
    boolean insertThisJoinPointReferences = options.isThisJoinPointReferencesEnabled();
    boolean addReferencesForOrganizeImports = options.isDummyTypeReferencesForOrganizeImportsEnabled();
    boolean isSimulateContextSwitchNecessary = (options.getTargetType() != null);

    scanner = new Scanner();
    scanner.setSource(content);//from  ww  w .  jav  a2s . c o m

    insidePointcutDesignator = false;
    //insideAspect = false;
    insideAspectDeclaration = false;

    // Bug 93248: Count question marks so as to ignore colons that are part of conditional statements      
    int questionMarkCount = 0;

    // Bug 110751: Ignore colons that are part of enhanced "for" loop in Java 5
    boolean insideFor = false;

    replacements.clear();
    typeReferences.clear();
    usedIdentifiers.clear();

    int tok;
    while (true) {

        try {
            tok = scanner.getNextToken();
        } catch (InvalidInputException e) {
            continue;
        }
        if (tok == TokenNameEOF)
            break;

        switch (tok) {
        case TokenNameIdentifier:
            char[] name = scanner.getCurrentIdentifierSource();
            if (CharOperation.equals(ca_cclass, name)) {
                int pos = scanner.getCurrentTokenStartPosition();
                addReplacement(pos, ca_cclass.length, ca_class_);
            } else if (CharOperation.equals(ca_wraps, name)) {
                replaceWrappee();
            } else if (CharOperation.equals(throwing, name))
                consumeRetOrThro();
            else if (CharOperation.equals(returning, name))
                consumeRetOrThro();
            else if (insidePointcutDesignator && Character.isUpperCase(name[0])
                    && (content[scanner.getCurrentTokenStartPosition() - 1] != '.')) {
                typeReferences.add(new String(name));
            }

            if (isSimulateContextSwitchNecessary) {
                usedIdentifiers.add(new String(name));
            }
            break;
        case TokenNameextends:
            eliminateMultipleInheritance();
            break;
        case TokenNamefor:
            insideFor = true;
            break;
        case TokenNameRPAREN:
            insideFor = false;
            break;
        case TokenNameCOLON:
            //if (!insideAspect)
            //   break;
            if (insideFor)
                break;
            if (questionMarkCount > 0) {
                questionMarkCount--;
                break;
            }
            startPointcutDesignator();
            break;

        case TokenNameQUESTION:
            questionMarkCount++;
            break;

        case TokenNameSEMICOLON:
            if (insidePointcutDesignator)
                endPointcutDesignator();
            break;

        case TokenNameLBRACE:
            if (insidePointcutDesignator) {
                endPointcutDesignator();
                //must be start of advice body -> insert tjp reference
                if (insertThisJoinPointReferences && !insideAspectDeclaration)
                    addReplacement(scanner.getCurrentTokenStartPosition() + 1, 0, tjpRefs2);
            }
            insideAspectDeclaration = false;

            break;
        case TokenNameRBRACE:
            if (insidePointcutDesignator) {
                // bug 129367: if we've hit a } here, we must be
                // in the middle of an unterminated pointcut
                endPointcutDesignator();
            }
            break;
        }
    }

    if (insidePointcutDesignator) {
        // bug 129367: if we've hit the end of the buffer, we must
        // be in the middle of an unterminated pointcut
        endPointcutDesignator();
    }

    if (addReferencesForOrganizeImports)
        addReferences();

    if (isSimulateContextSwitchNecessary)
        simulateContextSwitch(options.getCodeCompletePosition(), options.getTargetType());

    applyReplacements();

    //System.out.println(new String(content));
    return replacements;
}

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