mirror of
https://github.com/eclipse-cdt/cdt
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Evaluate expressions on stack frame instead of target to provide evaluation context.
Evaluate the hovering expression for the selected context only.
This commit is contained in:
Mikhail Khodjaiants
parent
1c54168e72
commit
c9db949d2b
2 changed files with 147 additions and 111 deletions
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@ -1,3 +1,8 @@
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2004-09-20 Mikhail Khodjaiants
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Evaluate expressions on stack frame instead of target to provide evaluation context.
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Evaluate the hovering expression for the selected context only.
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* DebugTextHover.java
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2004-09-17 Alain Magloire
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Support for 64 bits application
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PR 74056. Pathc from Artyom Kuanbekov
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@ -8,174 +8,211 @@
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* Contributors:
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* QNX Software Systems - Initial API and implementation
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*******************************************************************************/
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package org.eclipse.cdt.debug.internal.ui.editors;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import org.eclipse.cdt.debug.core.model.ICExpressionEvaluator;
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import org.eclipse.cdt.debug.core.model.ICStackFrame;
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import org.eclipse.cdt.debug.internal.ui.CDebugUIUtils;
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import org.eclipse.cdt.debug.ui.CDebugUIPlugin;
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import org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover;
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import org.eclipse.core.runtime.IAdaptable;
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import org.eclipse.debug.core.DebugException;
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import org.eclipse.debug.core.DebugPlugin;
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import org.eclipse.debug.core.ILaunchManager;
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import org.eclipse.debug.core.model.IDebugTarget;
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import org.eclipse.debug.ui.IDebugUIConstants;
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import org.eclipse.jface.text.BadLocationException;
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import org.eclipse.jface.text.IDocument;
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import org.eclipse.jface.text.IInformationControlCreator;
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import org.eclipse.jface.text.IRegion;
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import org.eclipse.jface.text.ITextHoverExtension;
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import org.eclipse.jface.text.ITextViewer;
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import org.eclipse.jface.viewers.ISelection;
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import org.eclipse.jface.viewers.IStructuredSelection;
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import org.eclipse.ui.IEditorPart;
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import org.eclipse.ui.IPartListener;
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import org.eclipse.ui.ISelectionListener;
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import org.eclipse.ui.IWorkbenchPage;
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import org.eclipse.ui.IWorkbenchPart;
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/**
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*
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* The text hovering support for C/C++ debugger.
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*
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* @since: Sep 12, 2002
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*/
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public class DebugTextHover implements ICEditorTextHover
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{
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public class DebugTextHover implements ICEditorTextHover, ITextHoverExtension, ISelectionListener, IPartListener {
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static final private int MAX_HOVER_INFO_SIZE = 100;
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protected ISelection fSelection = null;
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protected IEditorPart fEditor;
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/**
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* Constructor for DebugTextHover.
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*/
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public DebugTextHover()
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{
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public DebugTextHover() {
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super();
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}
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/**
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* @see org.eclipse.jface.text.ITextHover#getHoverInfo(ITextViewer, IRegion)
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/* (non-Javadoc)
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* @see org.eclipse.jface.text.ITextHover#getHoverInfo(org.eclipse.jface.text.ITextViewer, org.eclipse.jface.text.IRegion)
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*/
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public String getHoverInfo( ITextViewer textViewer, IRegion hoverRegion )
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{
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DebugPlugin debugPlugin = DebugPlugin.getDefault();
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if ( debugPlugin == null )
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{
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return null;
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}
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ILaunchManager launchManager = debugPlugin.getLaunchManager();
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if ( launchManager == null )
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{
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return null;
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}
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IDebugTarget[] targets = launchManager.getDebugTargets();
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if ( targets != null && targets.length > 0 )
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{
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try
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{
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public String getHoverInfo( ITextViewer textViewer, IRegion hoverRegion ) {
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ICStackFrame frame = getFrame();
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if ( frame != null && frame.canEvaluate() ) {
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try {
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IDocument document = textViewer.getDocument();
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if ( document == null )
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return null;
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String expression = document.get( hoverRegion.getOffset(), hoverRegion.getLength() );
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if ( expression == null )
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return null;
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expression = expression.trim();
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if ( expression.length() == 0 )
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return null;
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List targetList = new ArrayList( targets.length );
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for ( int i = 0; i < targets.length; i++ )
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{
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ICExpressionEvaluator ee = (ICExpressionEvaluator)targets[i].getAdapter( ICExpressionEvaluator.class );
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if ( ee != null )
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{
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targetList.add(targets[i] );
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}
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return null;
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StringBuffer buffer= new StringBuffer();
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String result = evaluateExpression( frame, expression );
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if ( result == null )
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return null;
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try {
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if ( result != null )
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appendVariable( buffer, makeHTMLSafe( expression ), makeHTMLSafe( result.trim() ) );
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}
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StringBuffer buffer = new StringBuffer();
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boolean showDebugTarget = targetList.size() > 1;
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Iterator iterator = targetList.iterator();
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while ( iterator.hasNext() )
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{
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IDebugTarget target = (IDebugTarget)iterator.next();
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ICExpressionEvaluator ee = (ICExpressionEvaluator)target.getAdapter( ICExpressionEvaluator.class );
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if ( ee.canEvaluate() )
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{
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String result = evaluateExpression( ee, expression );
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try
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{
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if ( result != null )
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appendVariable( buffer, expression, result.trim(), showDebugTarget ? target.getName() : null );
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}
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catch( DebugException x )
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{
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CDebugUIPlugin.log( x );
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}
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}
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catch( DebugException x ) {
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CDebugUIPlugin.log( x );
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}
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if ( buffer.length() > 0 )
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{
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if ( buffer.length() > 0 ) {
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return buffer.toString();
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}
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}
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catch ( BadLocationException x )
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{
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catch( BadLocationException x ) {
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CDebugUIPlugin.log( x );
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}
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}
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return null;
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}
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/**
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* @see org.eclipse.jface.text.ITextHover#getHoverRegion(ITextViewer, int)
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/* (non-Javadoc)
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* @see org.eclipse.jface.text.ITextHover#getHoverRegion(org.eclipse.jface.text.ITextViewer, int)
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*/
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public IRegion getHoverRegion( ITextViewer viewer, int offset )
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{
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/*
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Point selectedRange = viewer.getSelectedRange();
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if ( selectedRange.x >= 0 &&
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selectedRange.y > 0 &&
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offset >= selectedRange.x &&
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offset <= selectedRange.x + selectedRange.y )
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return new Region( selectedRange.x, selectedRange.y );
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*/
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public IRegion getHoverRegion( ITextViewer viewer, int offset ) {
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/*
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* Point selectedRange = viewer.getSelectedRange(); if ( selectedRange.x >= 0 && selectedRange.y > 0 && offset >= selectedRange.x && offset <=
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* selectedRange.x + selectedRange.y ) return new Region( selectedRange.x, selectedRange.y );
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*/
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if ( viewer != null )
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return CDebugUIUtils.findWord( viewer.getDocument(), offset );
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return null;
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}
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private String evaluateExpression( ICExpressionEvaluator ee, String expression )
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{
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private String evaluateExpression( ICStackFrame frame, String expression ) {
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String result = null;
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try
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{
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result = ee.evaluateExpressionToString( expression );
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try {
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result = frame.evaluateExpressionToString( expression );
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}
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catch( DebugException e )
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{
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catch( DebugException e ) {
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// ignore
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}
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return result;
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}
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/**
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* A variable gets one line for each debug target it appears in.
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* Append HTML for the given variable to the given buffer
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*/
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private static void appendVariable( StringBuffer buffer,
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String expression,
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String value,
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String debugTargetName ) throws DebugException
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{
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private static void appendVariable( StringBuffer buffer, String expression, String value ) throws DebugException {
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if ( value.length() > MAX_HOVER_INFO_SIZE )
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value = value.substring( 0, MAX_HOVER_INFO_SIZE ) + " ..."; //$NON-NLS-1$
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buffer.append( "<p>" ); //$NON-NLS-1$
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if ( debugTargetName != null )
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{
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buffer.append( '[' + debugTargetName + "] " ); //$NON-NLS-1$
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}
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buffer.append( makeHTMLSafe( expression ) );
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buffer.append( " = " ); //$NON-NLS-1$
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String safeValue = "<b>" + makeHTMLSafe( value ) + "</b>"; //$NON-NLS-1$ //$NON-NLS-2$
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buffer.append( safeValue );
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buffer.append( "<pre>" ).append( expression ).append( "</pre>" ); //$NON-NLS-1$ //$NON-NLS-2$
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buffer.append( " =" ); //$NON-NLS-1$
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buffer.append( "<b><pre>" ).append( value ).append( "</pre></b>" ); //$NON-NLS-1$ //$NON-NLS-2$
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buffer.append( "</p>" ); //$NON-NLS-1$
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}
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/* (non-Javadoc)
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* @see org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover#setEditor(org.eclipse.ui.IEditorPart)
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*/
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public void setEditor( IEditorPart editor ) {
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if ( editor != null ) {
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fEditor = editor;
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final IWorkbenchPage page = editor.getSite().getPage();
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page.addSelectionListener( IDebugUIConstants.ID_DEBUG_VIEW, this );
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page.addPartListener( this );
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// initialize selection
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Runnable r = new Runnable() {
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public void run() {
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fSelection = page.getSelection( IDebugUIConstants.ID_DEBUG_VIEW );
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}
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};
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CDebugUIPlugin.getStandardDisplay().asyncExec( r );
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}
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}
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/* (non-Javadoc)
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* @see org.eclipse.ui.ISelectionListener#selectionChanged(org.eclipse.ui.IWorkbenchPart, org.eclipse.jface.viewers.ISelection)
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*/
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public void selectionChanged( IWorkbenchPart part, ISelection selection ) {
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fSelection = selection;
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}
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/* (non-Javadoc)
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* @see org.eclipse.ui.IPartListener#partActivated(org.eclipse.ui.IWorkbenchPart)
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*/
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public void partActivated( IWorkbenchPart part ) {
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}
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/* (non-Javadoc)
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* @see org.eclipse.ui.IPartListener#partBroughtToTop(org.eclipse.ui.IWorkbenchPart)
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*/
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public void partBroughtToTop( IWorkbenchPart part ) {
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}
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/* (non-Javadoc)
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* @see org.eclipse.ui.IPartListener#partClosed(org.eclipse.ui.IWorkbenchPart)
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*/
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public void partClosed( IWorkbenchPart part ) {
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if ( part.equals( fEditor ) ) {
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IWorkbenchPage page = fEditor.getSite().getPage();
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page.removeSelectionListener( IDebugUIConstants.ID_DEBUG_VIEW, this );
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page.removePartListener( this );
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fSelection = null;
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fEditor = null;
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}
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}
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/* (non-Javadoc)
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* @see org.eclipse.ui.IPartListener#partDeactivated(org.eclipse.ui.IWorkbenchPart)
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*/
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public void partDeactivated( IWorkbenchPart part ) {
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}
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/* (non-Javadoc)
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* @see org.eclipse.ui.IPartListener#partOpened(org.eclipse.ui.IWorkbenchPart)
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*/
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public void partOpened( IWorkbenchPart part ) {
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}
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/**
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* Returns the evaluation stack frame, or <code>null</code> if none.
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*
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* @return the evaluation stack frame, or <code>null</code> if none
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*/
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protected ICStackFrame getFrame() {
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if ( fSelection instanceof IStructuredSelection ) {
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IStructuredSelection selection = (IStructuredSelection)fSelection;
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if ( selection.size() == 1 ) {
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Object el = selection.getFirstElement();
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if ( el instanceof IAdaptable ) {
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return (ICStackFrame)((IAdaptable)el).getAdapter( ICStackFrame.class );
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}
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}
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}
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return null;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.text.ITextHoverExtension#getHoverControlCreator()
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*/
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public IInformationControlCreator getHoverControlCreator() {
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return null;
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}
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/**
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* Replace any characters in the given String that would confuse an HTML
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* parser with their escape sequences.
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@ -209,10 +246,4 @@ public class DebugTextHover implements ICEditorTextHover
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}
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return buffer.toString();
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}
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/* (non-Javadoc)
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* @see org.eclipse.cdt.ui.text.c.hover.ICEditorTextHover#setEditor(org.eclipse.ui.IEditorPart)
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*/
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public void setEditor(IEditorPart editor) {
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}
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}
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}
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