com.ibm.wala.ide.ui.ViewIRAction.java Source code

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Here is the source code for com.ibm.wala.ide.ui.ViewIRAction.java

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/*******************************************************************************
 * Copyright (c) 2002 - 2006 IBM Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package com.ibm.wala.ide.ui;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.IStructuredSelection;

import com.ibm.wala.ipa.callgraph.CGNode;
import com.ibm.wala.ipa.callgraph.CallGraph;
import com.ibm.wala.ssa.IR;
import com.ibm.wala.util.WalaException;
import com.ibm.wala.viz.PDFViewUtil;

/**
 * An SWT action that spawns spawns a ghostview to see the IR for a call graph node which is the current selection in a tree viewer.
 */
public class ViewIRAction extends Action {
    /**
     * Governing tree viewer
     */
    private final SWTTreeViewer viewer;

    /**
     * Governing call graph
     */
    private final CallGraph cg;

    /**
     * name of postscript file to generate
     */
    private final String psFile;

    /**
     * name of dot file to generate
     */
    private final String dotFile;

    /**
     * path to dot.exe
     */
    private final String dotExe;

    /**
     * path to ghostview executable
     */
    private final String gvExe;

    /**
     * @param viewer Governing tree viewer
     * @param cg Governing call graph
     */
    public ViewIRAction(SWTTreeViewer viewer, CallGraph cg, String psFile, String dotFile, String dotExe,
            String gvExe) {
        if (viewer == null) {
            throw new IllegalArgumentException("null viewer");
        }
        this.viewer = viewer;
        this.cg = cg;
        this.psFile = psFile;
        this.dotFile = dotFile;
        this.dotExe = dotExe;
        this.gvExe = gvExe;
        setText("View IR");
    }

    /**
     * @see org.eclipse.jface.action.IAction#run()
     * 
     * @throws IllegalStateException if the viewer is not running
     */
    @Override
    public void run() {
        IR ir = getIRForSelection();
        // spawn the viewer
        System.err.println("Spawn IR Viewer for " + ir.getMethod());
        try {
            PDFViewUtil.ghostviewIR(cg.getClassHierarchy(), ir, psFile, dotFile, dotExe, gvExe);
        } catch (WalaException e) {
            e.printStackTrace();
        }
    }

    /**
     * @throws IllegalStateException if the viewer is not running
     */
    protected IR getIRForSelection() {
        // we assume the tree viewer's current selection is a CGNode
        IStructuredSelection selection = viewer.getSelection();
        if (selection.size() != 1) {
            throw new UnsupportedOperationException("did not expect selection of size " + selection.size());
        }
        CGNode first = (CGNode) selection.getFirstElement();

        // get the IR for the node
        return first.getIR();
    }

    protected CGNode getNodeForSelection() {
        // we assume the tree viewer's current selection is a CGNode
        IStructuredSelection selection = viewer.getSelection();
        if (selection.size() != 1) {
            throw new UnsupportedOperationException("did not expect selection of size " + selection.size());
        }
        CGNode first = (CGNode) selection.getFirstElement();
        return first;
    }

    protected SWTTreeViewer getViewer() {
        return viewer;
    }

    protected CallGraph getCg() {
        return cg;
    }

    protected String getDotExe() {
        return dotExe;
    }

    protected String getDotFile() {
        return dotFile;
    }

    protected String getGvExe() {
        return gvExe;
    }

    protected String getPsFile() {
        return psFile;
    }
}