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/*******************************************************************************
* Copyright (c) 2014 Jeff Martin.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the GNU Public License v3.0
* which accompanies this distribution, and is available at
* http://www.gnu.org/licenses/gpl.html
*
* Contributors:
* Jeff Martin - initial API and implementation
******************************************************************************/
package cuchaz.enigma.analysis;
import java.io.IOException;
import java.util.HashMap;
import javassist.bytecode.Descriptor;
import com.google.common.collect.Maps;
import com.sun.source.tree.CompilationUnitTree;
import com.sun.source.tree.ImportTree;
import com.sun.source.tree.Tree;
import com.sun.source.util.SourcePositions;
import com.sun.source.util.Trees;
public class SourcedAst
{
private CompilationUnitTree m_tree;
private Trees m_trees;
private SourcePositions m_positions;
private HashMap<String,String> m_classNameIndex;
private String m_packageName;
public SourcedAst( CompilationUnitTree tree, Trees trees )
{
m_tree = tree;
m_trees = trees;
m_positions = m_trees.getSourcePositions();
m_classNameIndex = Maps.newHashMap();
// index all the class names from package imports
for( ImportTree importTree : m_tree.getImports() )
{
// ignore static imports for now
if( importTree.isStatic() )
{
continue;
}
// get the full and simple class names
String fullName = Descriptor.toJvmName( importTree.getQualifiedIdentifier().toString() );
String simpleName = fullName;
if( fullName.startsWith( "__DEFAULT__/" ) )
{
// remove the default package flag
fullName = fullName.substring( 12 );
}
String[] parts = fullName.split( "/" );
if( parts.length > 0 )
{
simpleName = parts[parts.length - 1];
}
m_classNameIndex.put( simpleName, fullName );
}
// get the package name
m_packageName = null;
if( m_tree.getPackageName() != null )
{
m_packageName = Descriptor.toJvmName( m_tree.getPackageName().toString() );
}
}
public int getStart( Tree node )
{
int pos = (int)m_positions.getStartPosition( m_tree, node );
assert( pos >= 0 );
return pos;
}
public int getEnd( Tree node )
{
int pos = (int)m_positions.getEndPosition( m_tree, node );
assert( pos >= 0 );
return pos;
}
public int getLine( Tree node )
{
return getLine( getStart( node ) );
}
public int getLine( int pos )
{
return (int)m_tree.getLineMap().getLineNumber( pos );
}
public CharSequence getSource( )
{
try
{
return m_tree.getSourceFile().getCharContent( true );
}
catch( IOException ex )
{
throw new Error( ex );
}
}
public CharSequence getSource( Tree node )
{
return getSource().subSequence( getStart( node ), getEnd( node ) );
}
public void visit( TreeVisitor visitor )
{
m_tree.accept( visitor, this );
}
public String getFullClassName( String simpleClassName )
{
String fullClassName = m_classNameIndex.get( simpleClassName );
if( fullClassName == null )
{
if( m_packageName != null )
{
// no mapping was found, assume it's in the package
fullClassName = m_packageName + "/" + simpleClassName;
}
else
{
// this must be in the default package
fullClassName = simpleClassName;
}
}
return fullClassName;
}
}
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