Example usage for org.eclipse.jdt.core.dom AST AST

Introduction

In this page you can find the example usage for org.eclipse.jdt.core.dom AST AST.

Prototype

public AST() 

Source Link

Document

Creates a new, empty abstract syntax tree using default options.

Usage

From source file:org.eclipse.umlgen.reverse.java.JavaReverseCUVisitor.java

License:Open Source License

/**
 * linkToLastStatement : look for last statement and call control flow creation simple statement.
 *
 * @param node//w  w  w.  j  a va2s.c o  m
 */
protected void linkToLastStatement(Statement node) {
    ActivityNode targetNode = null;
    ActivityNode sourceNode = null;
    // If last statement was a parent node, link its inner exit to us.
    if (lastStatement != null && parentStatements.contains(lastStatement)) {
        // if last statement has a designated exit map, use that
        if (innerExitMap.containsKey(lastStatement)) {
            sourceNode = innerExitMap.get(lastStatement);
        } else {
            // TODO Otherwise, we might be inside a region. Add a start point and link to it
            // FIXME maybe the parent can create the nodes instead
        }
    } else {
        LiteralString stringuard = UMLFactory.eINSTANCE.createLiteralString();
        stringuard.setValue("else");

        // Specific case : else statement
        // parentStatements does not contains lastStatement any more
        if (node.getParent().getNodeType() == ASTNode.IF_STATEMENT) {
            IfStatement parent = (IfStatement) node.getParent();
            if (choiceMap.containsKey(parent) && parent.getElseStatement() != null
                    && parent.getElseStatement().equals(node)) {
                sourceNode = choiceMap.get(parent);
                choiceMap.remove(parent);
                if (lastGuard == null) {
                    lastGuard = stringuard;
                }
            }
        }
        if (node.getParent().getNodeType() == ASTNode.BLOCK
                && node.getParent().getParent().getNodeType() == ASTNode.IF_STATEMENT) {
            IfStatement parent = (IfStatement) node.getParent().getParent();
            Block block;

            if (parent.getElseStatement() instanceof IfStatement) {
                AST ast = new AST();
                block = (Block) ast.createInstance(ASTNode.BLOCK);
                List<Statement> elseblock = new ArrayList<Statement>();
                elseblock.add(parent.getElseStatement());
            } else {
                block = (Block) parent.getElseStatement();
            }
            if (choiceMap.containsKey(parent) && block != null && block.statements().size() > 0
                    && block.statements().get(0).equals(node)) {
                sourceNode = choiceMap.get(parent);
                choiceMap.remove(parent);
                if (lastGuard == null) {
                    lastGuard = stringuard;
                }
            }
        }

    }

    // if this has a registered entry node, use it
    if (entryNodeMap.containsKey(node)) {
        targetNode = entryNodeMap.get(node);
        // if we haven't yet found a sourceNode, use the exitMap's or a new one
        if (sourceNode == null) {
            if (lastActivityNode != null) {
                sourceNode = lastActivityNode;
                lastActivityNode = null;
            } else if (lastStatement == null || !exitNodeMap.containsKey(lastStatement)) {
                sourceNode = initNode;
            } else if (exitNodeMap.containsKey(lastStatement)) {
                sourceNode = exitNodeMap.get(lastStatement);
            }
        }
    }
    createControlFlow(targetNode, sourceNode);
}

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