/**
* Creates a new multi-set based tree distance object. From the paper: Arnoldo Muller, Kouichi
* Hirata and Takeshi Shinohara. A Tree Distance Function Based on Multi-sets. In ALSIP 2008 -
* Osaka, Japan (to appear in LNCS).
*
* @param t A string representation of a tree.
* @return
* @throws RecognitionException
* @throws TokenStreamException
*/
public static MTD createMTD(String t) throws RecognitionException, TokenStreamException {
SliceLexer lexer = new SliceLexer(new StringReader(t));
SliceParser parser = new SliceParser(lexer);
parser.setASTNodeClass(FTree.class.getCanonicalName());
parser.slice();
FTree s = (FTree) parser.getAST();
MTD m = new MTD(s);
return m;
}
/**
* Creates a tree from a slice string definition
*
* @param x
* @return
*/
protected static TreeIds createSliceAST(String x)
throws RecognitionException, TokenStreamException {
SliceLexer lexer = new SliceLexer(new StringReader(x));
SliceParser parser = new SliceParser(lexer);
parser.setASTNodeClass(TreeIds.class.getCanonicalName());
parser.slice();
TreeIds s = (TreeIds) parser.getAST();
s.updateIdInfo();
s.updateContains();
return s;
}
public static TreeForStandardTed createTreeForStandardTed(String x)
throws RecognitionException, TokenStreamException {
SliceLexer lexer = new SliceLexer(new StringReader(x));
SliceParser parser = new SliceParser(lexer);
parser.setASTNodeClass(TreeForStandardTed.class.getCanonicalName());
parser.slice();
TreeForStandardTed s = (TreeForStandardTed) parser.getAST();
s.updateIdInfo();
s.updateContains();
return s;
}
/**
* creates the base clase of the ast. it is lighter
*
* @param x
* @return
* @throws RecognitionException
* @throws TokenStreamException
*/
protected static Tree createSliceASTLean(String x)
throws RecognitionException, TokenStreamException {
SliceLexer lexer = new SliceLexer(new StringReader(x));
SliceParser parser = new SliceParser(lexer);
parser.setASTNodeClass(Tree.class.getCanonicalName());
try {
parser.slice();
} catch (RecognitionException e) {
e.fileName = x + " " + e.fileName;
throw e;
}
return (Tree) parser.getAST();
}
