treebuilder.TreeToString Class Reference

Collaboration diagram for treebuilder.TreeToString:

[legend]List of all members.

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Detailed Description

TreeToString.

A class to support representation of the TreeNode tree as a String. Note that there is a similar class, TreeToXML which will serialize the in-memory tree back to XML.

For those of you who speak the "gang of four" Design Patterns languauge, this class follows a "visitor" pattern.

Public Member Functions
	TreeToString (TreeNode root)
String	toString ()
Private Member Functions
void	indent ()
void	openAngle ()
void	closeAngle (boolean first)
void	nodeToString (TreeNode node)
void	leavesToString (TreeNode root)
void	rootToString (TreeNode root)
Private Attributes
final char	startChar = '<'
final char	endChar = '>'
TreeNode	mRoot
StringBuffer	mBuf = null
final int	INDENT = 2
int	mIndentLevel

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Constructor & Destructor Documentation

treebuilder.TreeToString.TreeToString (  TreeNode  root  )

{ mRoot = root; }

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Member Function Documentation

void treebuilder.TreeToString.closeAngle (  boolean  first  )  [private]

{ assert mIndentLevel > 0; mIndentLevel -= INDENT; if (! first ) { mBuf.append('\n'); indent(); } mBuf.append( endChar ); mBuf.append(' '); } // closeAngle

void treebuilder.TreeToString.indent (   )  [private]

{ for (int i = 0; i < mIndentLevel; i++) { mBuf.append(' '); } } // indent

void treebuilder.TreeToString.leavesToString (  TreeNode  root  )  [private]

{ if (root != null) { for (TreeNode n = root.getChild(); n != null; n = n.getSibling()) { if (! n.isLeaf()) { rootToString( n ); } else { nodeToString( n ); } } } } // leavesToString

void treebuilder.TreeToString.nodeToString (  TreeNode  node  )  [private]

{ TreeNodeType ty = node.getType(); String nodeStr = node.toString(); if (ty == TreeNodeType.TEXT) { nodeStr = nodeStr.trim(); } else if (ty == TreeNodeType.COMMENT) { nodeStr = "\n<--" + nodeStr + "-->"; } if (nodeStr.length() > 0) { // String tyName = ty.toString(); // mBuf.append( tyName ); // mBuf.append(':'); mBuf.append( nodeStr ); mBuf.append(' '); } } // nodeToString

void treebuilder.TreeToString.openAngle (   )  [private]

{ if (mIndentLevel > 0) { mBuf.append('\n'); } indent(); mBuf.append( startChar ); mIndentLevel += INDENT; } // openAngle

void treebuilder.TreeToString.rootToString (  TreeNode  root  )  [private]

{ boolean first = true; if (root != null) { openAngle(); nodeToString(root ); if (! root.isLeaf()) { // foreach child of root ... for (TreeNode n = root.getChild(); n != null; n = n.getSibling()) { if (! n.isLeaf()) { first = false; } } // for leavesToString( root ); } // if root is not a leaf closeAngle( first ); } } // rootToString

String treebuilder.TreeToString.toString (   )

{ mBuf = new StringBuffer(); for (TreeNode t = mRoot; t != null; t = t.getSibling()) { mIndentLevel = 0; rootToString( t ); mBuf.append('\n'); } return mBuf.toString(); } // toString

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Member Data Documentation

final char treebuilder.TreeToString.endChar = '>' [private]

final int treebuilder.TreeToString.INDENT = 2 [private]

StringBuffer treebuilder.TreeToString.mBuf = null [private]

int treebuilder.TreeToString.mIndentLevel [private]

TreeNode treebuilder.TreeToString.mRoot [private]

final char treebuilder.TreeToString.startChar = '<' [private]

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The documentation for this class was generated from the following file:

• TreeToString.java

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