/*******************************************************************************
 * 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.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;

import com.strobel.componentmodel.Key;
import com.strobel.decompiler.languages.java.ast.Annotation;
import com.strobel.decompiler.languages.java.ast.AnonymousObjectCreationExpression;
import com.strobel.decompiler.languages.java.ast.ArrayCreationExpression;
import com.strobel.decompiler.languages.java.ast.ArrayInitializerExpression;
import com.strobel.decompiler.languages.java.ast.ArraySpecifier;
import com.strobel.decompiler.languages.java.ast.AssertStatement;
import com.strobel.decompiler.languages.java.ast.AssignmentExpression;
import com.strobel.decompiler.languages.java.ast.AstNode;
import com.strobel.decompiler.languages.java.ast.BinaryOperatorExpression;
import com.strobel.decompiler.languages.java.ast.BlockStatement;
import com.strobel.decompiler.languages.java.ast.BreakStatement;
import com.strobel.decompiler.languages.java.ast.CaseLabel;
import com.strobel.decompiler.languages.java.ast.CastExpression;
import com.strobel.decompiler.languages.java.ast.CatchClause;
import com.strobel.decompiler.languages.java.ast.ClassOfExpression;
import com.strobel.decompiler.languages.java.ast.Comment;
import com.strobel.decompiler.languages.java.ast.CompilationUnit;
import com.strobel.decompiler.languages.java.ast.ComposedType;
import com.strobel.decompiler.languages.java.ast.ConditionalExpression;
import com.strobel.decompiler.languages.java.ast.ConstructorDeclaration;
import com.strobel.decompiler.languages.java.ast.ContinueStatement;
import com.strobel.decompiler.languages.java.ast.DoWhileStatement;
import com.strobel.decompiler.languages.java.ast.EmptyStatement;
import com.strobel.decompiler.languages.java.ast.EnumValueDeclaration;
import com.strobel.decompiler.languages.java.ast.ExpressionStatement;
import com.strobel.decompiler.languages.java.ast.FieldDeclaration;
import com.strobel.decompiler.languages.java.ast.ForEachStatement;
import com.strobel.decompiler.languages.java.ast.ForStatement;
import com.strobel.decompiler.languages.java.ast.GotoStatement;
import com.strobel.decompiler.languages.java.ast.IAstVisitor;
import com.strobel.decompiler.languages.java.ast.Identifier;
import com.strobel.decompiler.languages.java.ast.IdentifierExpression;
import com.strobel.decompiler.languages.java.ast.IfElseStatement;
import com.strobel.decompiler.languages.java.ast.ImportDeclaration;
import com.strobel.decompiler.languages.java.ast.IndexerExpression;
import com.strobel.decompiler.languages.java.ast.InstanceInitializer;
import com.strobel.decompiler.languages.java.ast.InstanceOfExpression;
import com.strobel.decompiler.languages.java.ast.InvocationExpression;
import com.strobel.decompiler.languages.java.ast.JavaTokenNode;
import com.strobel.decompiler.languages.java.ast.Keys;
import com.strobel.decompiler.languages.java.ast.LabelStatement;
import com.strobel.decompiler.languages.java.ast.LabeledStatement;
import com.strobel.decompiler.languages.java.ast.LambdaExpression;
import com.strobel.decompiler.languages.java.ast.LocalTypeDeclarationStatement;
import com.strobel.decompiler.languages.java.ast.MemberReferenceExpression;
import com.strobel.decompiler.languages.java.ast.MethodDeclaration;
import com.strobel.decompiler.languages.java.ast.MethodGroupExpression;
import com.strobel.decompiler.languages.java.ast.NewLineNode;
import com.strobel.decompiler.languages.java.ast.NullReferenceExpression;
import com.strobel.decompiler.languages.java.ast.ObjectCreationExpression;
import com.strobel.decompiler.languages.java.ast.PackageDeclaration;
import com.strobel.decompiler.languages.java.ast.ParameterDeclaration;
import com.strobel.decompiler.languages.java.ast.ParenthesizedExpression;
import com.strobel.decompiler.languages.java.ast.PrimitiveExpression;
import com.strobel.decompiler.languages.java.ast.ReturnStatement;
import com.strobel.decompiler.languages.java.ast.SimpleType;
import com.strobel.decompiler.languages.java.ast.SuperReferenceExpression;
import com.strobel.decompiler.languages.java.ast.SwitchSection;
import com.strobel.decompiler.languages.java.ast.SwitchStatement;
import com.strobel.decompiler.languages.java.ast.SynchronizedStatement;
import com.strobel.decompiler.languages.java.ast.TextNode;
import com.strobel.decompiler.languages.java.ast.ThisReferenceExpression;
import com.strobel.decompiler.languages.java.ast.ThrowStatement;
import com.strobel.decompiler.languages.java.ast.TryCatchStatement;
import com.strobel.decompiler.languages.java.ast.TypeDeclaration;
import com.strobel.decompiler.languages.java.ast.TypeParameterDeclaration;
import com.strobel.decompiler.languages.java.ast.TypeReferenceExpression;
import com.strobel.decompiler.languages.java.ast.UnaryOperatorExpression;
import com.strobel.decompiler.languages.java.ast.VariableDeclarationStatement;
import com.strobel.decompiler.languages.java.ast.VariableInitializer;
import com.strobel.decompiler.languages.java.ast.WhileStatement;
import com.strobel.decompiler.languages.java.ast.WildcardType;
import com.strobel.decompiler.patterns.Pattern;

public class TreeDumpVisitor implements IAstVisitor<Void, Void>
{
	private File m_file;
	private Writer m_out;
	
	public TreeDumpVisitor( File file )
	{
		m_file = file;
		m_out = null;
	}
	
	@Override
	public Void visitCompilationUnit( CompilationUnit node, Void ignored )
	{
		try
		{
			m_out = new FileWriter( m_file );
			recurse( node, ignored );
			m_out.close();
			return null;
		}
		catch( IOException ex )
		{
			throw new Error( ex );
		}
	}

	private Void recurse( AstNode node, Void ignored )
	{
		// show the tree
		try
		{
			m_out.write( getIndent( node ) + node.getClass().getSimpleName() + " " + getText( node ) + " " + dumpUserData( node ) + " " + node.getRegion() + "\n" );
		}
		catch( IOException ex )
		{
			throw new Error( ex );
		}
		
		// recurse
		for( final AstNode child : node.getChildren() )
		{
			child.acceptVisitor( this, ignored );
		}
		return null;
	}
	
	private String getText( AstNode node )
	{
		if( node instanceof Identifier )
		{
			return "\"" + ((Identifier)node).getName() + "\"";
		}
		return "";
	}
	
	private String dumpUserData( AstNode node )
	{
		StringBuilder buf = new StringBuilder();
		for( Key<?> key : Keys.ALL_KEYS )
		{
			Object val = node.getUserData( key );
			if( val != null )
			{
				buf.append( String.format( " [%s=%s]", key, val ) );
			}
		}
		return buf.toString();
	}
	
	private String getIndent( AstNode node )
	{
		StringBuilder buf = new StringBuilder();
		int depth = getDepth( node );
		for( int i = 0; i < depth; i++ )
		{
			buf.append( "\t" );
		}
		return buf.toString();
	}
	
	private int getDepth( AstNode node )
	{
		int depth = -1;
		while( node != null )
		{
			depth++;
			node = node.getParent();
		}
		return depth;
	}
	
	// OVERRIDES WE DON'T CARE ABOUT
	
	@Override
	public Void visitInvocationExpression( InvocationExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitMemberReferenceExpression( MemberReferenceExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitSimpleType( SimpleType node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitMethodDeclaration( MethodDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitConstructorDeclaration( ConstructorDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitParameterDeclaration( ParameterDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitFieldDeclaration( FieldDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitTypeDeclaration( TypeDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitComment( Comment node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitPatternPlaceholder( AstNode node, Pattern pattern, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitTypeReference( TypeReferenceExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitJavaTokenNode( JavaTokenNode node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitIdentifier( Identifier node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitNullReferenceExpression( NullReferenceExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitThisReferenceExpression( ThisReferenceExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitSuperReferenceExpression( SuperReferenceExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitClassOfExpression( ClassOfExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitBlockStatement( BlockStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitExpressionStatement( ExpressionStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitBreakStatement( BreakStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitContinueStatement( ContinueStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitDoWhileStatement( DoWhileStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitEmptyStatement( EmptyStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitIfElseStatement( IfElseStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitLabelStatement( LabelStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitLabeledStatement( LabeledStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitReturnStatement( ReturnStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitSwitchStatement( SwitchStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitSwitchSection( SwitchSection node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitCaseLabel( CaseLabel node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitThrowStatement( ThrowStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitCatchClause( CatchClause node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitAnnotation( Annotation node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitNewLine( NewLineNode node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitVariableDeclaration( VariableDeclarationStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitVariableInitializer( VariableInitializer node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitText( TextNode node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitImportDeclaration( ImportDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitInitializerBlock( InstanceInitializer node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitTypeParameterDeclaration( TypeParameterDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitPackageDeclaration( PackageDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitArraySpecifier( ArraySpecifier node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitComposedType( ComposedType node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitWhileStatement( WhileStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitPrimitiveExpression( PrimitiveExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitCastExpression( CastExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitBinaryOperatorExpression( BinaryOperatorExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitInstanceOfExpression( InstanceOfExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitIndexerExpression( IndexerExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitIdentifierExpression( IdentifierExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitUnaryOperatorExpression( UnaryOperatorExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitConditionalExpression( ConditionalExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitArrayInitializerExpression( ArrayInitializerExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitObjectCreationExpression( ObjectCreationExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitArrayCreationExpression( ArrayCreationExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitAssignmentExpression( AssignmentExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitForStatement( ForStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitForEachStatement( ForEachStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitTryCatchStatement( TryCatchStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitGotoStatement( GotoStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitParenthesizedExpression( ParenthesizedExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitSynchronizedStatement( SynchronizedStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitAnonymousObjectCreationExpression( AnonymousObjectCreationExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitWildcardType( WildcardType node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitMethodGroupExpression( MethodGroupExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitEnumValueDeclaration( EnumValueDeclaration node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitAssertStatement( AssertStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitLambdaExpression( LambdaExpression node, Void ignored )
	{
		return recurse( node, ignored );
	}
	
	@Override
	public Void visitLocalTypeDeclarationStatement( LocalTypeDeclarationStatement node, Void ignored )
	{
		return recurse( node, ignored );
	}
}