X-Git-Url: http://git.megacz.com/?p=sbp.git;a=blobdiff_plain;f=src%2Fedu%2Fberkeley%2Fsbp%2Fmisc%2FMetaGrammar.java;h=42db7c263197ea7fc5c92c5610e2677fe72c74a2;hp=0f75ecd52d313fdffc30552deb78c6de8c183f47;hb=2fae767715346f7d7e708b63f00a2f40ec26d3de;hpb=62b32452b9e26b282d61b44b829abb8c38ad31b7 diff --git a/src/edu/berkeley/sbp/misc/MetaGrammar.java b/src/edu/berkeley/sbp/misc/MetaGrammar.java index 0f75ecd..42db7c2 100644 --- a/src/edu/berkeley/sbp/misc/MetaGrammar.java +++ b/src/edu/berkeley/sbp/misc/MetaGrammar.java @@ -92,8 +92,12 @@ public class MetaGrammar extends ReflectiveWalker { if (s instanceof String) s = CharToken.string((String)s); return new Rep(r, (Element)s, false, true); } + public Object _percent__percent_(final Element r, Object s) { + if (s instanceof String) s = CharToken.string((String)s); + return new Rep(r, (Element)s, false, true); + } //public Element _star__slash_(final Element r, Element s) { return Repeat.many0(r, s); } - //public Element _star__star_(final Element r, Element s) { return Repeat.maximal(Repeat.many0(r, s)); } + public Object _star__star_(final Element r) { return new Rep(r, null, true, true); } public Object _plus__plus_(final Element r) { return new Rep(r, null, true, false); } public Element _question_(final Element r) { return Repeat.maybe(r); } public MetaGrammar gram(Object o, MetaGrammar g, Object o2) { return g; } @@ -371,30 +375,40 @@ public class MetaGrammar extends ReflectiveWalker { + + + // DO NOT EDIT STUFF BELOW: IT IS AUTOMATICALLY GENERATED new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "grammar", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { })})}), - new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "*", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { })})})})}), - new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "G", new Tree[] { }), + new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "g", new Tree[] { }), new Tree(null, "r", new Tree[] { }), new Tree(null, "a", new Tree[] { }), new Tree(null, "m", new Tree[] { }), new Tree(null, "m", new Tree[] { }), new Tree(null, "a", new Tree[] { }), new Tree(null, "r", new Tree[] { })})})}), - new Tree(null, "*", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { })})})})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})}), new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "g", new Tree[] { }), new Tree(null, "r", new Tree[] { }), new Tree(null, "a", new Tree[] { }), new Tree(null, "m", new Tree[] { })})})})})})})}), - new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "G", new Tree[] { }), + new Tree(null, "!::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})}), + new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "**", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { })})})})})})})})})})}), + new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "g", new Tree[] { }), new Tree(null, "r", new Tree[] { }), new Tree(null, "a", new Tree[] { }), new Tree(null, "m", new Tree[] { }), new Tree(null, "m", new Tree[] { }), new Tree(null, "a", new Tree[] { }), new Tree(null, "r", new Tree[] { })})}), - new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "+", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "R", new Tree[] { })})})})})}), + new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "+/", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "R", new Tree[] { })})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})})}), new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "g", new Tree[] { }), new Tree(null, "r", new Tree[] { }), new Tree(null, "a", new Tree[] { }), @@ -505,7 +519,7 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "v", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "s", new Tree[] { })})})})})})})}), - new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "S", new Tree[] { }), + new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "q", new Tree[] { }), new Tree(null, "u", new Tree[] { }), @@ -513,10 +527,17 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "n", new Tree[] { }), new Tree(null, "c", new Tree[] { }), new Tree(null, "e", new Tree[] { })})}), - new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "+", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { })})})})}), + new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})})})})}), + new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, "/", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})}), new Tree(null, "care", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "/", new Tree[] { })})})}), - new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { })})})})})})})}), - new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "+", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { })})})})})})})})})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { })})})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})})})})})})}), + new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})}), + new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "+", new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "E", new Tree[] { })})})})})})})})})})}), new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "C", new Tree[] { }), new Tree(null, "o", new Tree[] { }), new Tree(null, "n", new Tree[] { }), @@ -526,14 +547,14 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "c", new Tree[] { }), new Tree(null, "t", new Tree[] { }), new Tree(null, "s", new Tree[] { })})}), - new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "R", new Tree[] { }), + new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "r", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "w", new Tree[] { }), new Tree(null, "r", new Tree[] { }), new Tree(null, "i", new Tree[] { }), new Tree(null, "t", new Tree[] { }), new Tree(null, "e", new Tree[] { })})})})})}), - new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "R", new Tree[] { }), + new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "r", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "w", new Tree[] { }), new Tree(null, "r", new Tree[] { }), @@ -541,7 +562,7 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "t", new Tree[] { }), new Tree(null, "e", new Tree[] { })})})}), new Tree(null, "care", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "&", new Tree[] { })})})}), - new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "S", new Tree[] { }), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "q", new Tree[] { }), new Tree(null, "u", new Tree[] { }), @@ -549,7 +570,7 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "n", new Tree[] { }), new Tree(null, "c", new Tree[] { }), new Tree(null, "e", new Tree[] { })})})})})}), - new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "R", new Tree[] { }), + new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "r", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "w", new Tree[] { }), new Tree(null, "r", new Tree[] { }), @@ -558,7 +579,7 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "e", new Tree[] { })})})}), new Tree(null, "care", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "&", new Tree[] { }), new Tree(null, "~", new Tree[] { })})})}), - new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "S", new Tree[] { }), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "q", new Tree[] { }), new Tree(null, "u", new Tree[] { }), @@ -566,14 +587,14 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "n", new Tree[] { }), new Tree(null, "c", new Tree[] { }), new Tree(null, "e", new Tree[] { })})})})})})})})})}), - new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "R", new Tree[] { }), + new Tree(null, "::=", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "r", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "w", new Tree[] { }), new Tree(null, "r", new Tree[] { }), new Tree(null, "i", new Tree[] { }), new Tree(null, "t", new Tree[] { }), new Tree(null, "e", new Tree[] { })})}), - new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "S", new Tree[] { }), + new Tree(null, null, new Tree[] { new Tree(null, "alternatives", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "=>", new Tree[] { new Tree(null, "/", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "q", new Tree[] { }), new Tree(null, "u", new Tree[] { }), @@ -581,6 +602,8 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "n", new Tree[] { }), new Tree(null, "c", new Tree[] { }), new Tree(null, "e", new Tree[] { })})})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})}), new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "r", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "w", new Tree[] { }), @@ -588,7 +611,7 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "i", new Tree[] { }), new Tree(null, "t", new Tree[] { }), new Tree(null, "e", new Tree[] { })})})}), - new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "S", new Tree[] { }), + new Tree(null, "rewrite", new Tree[] { new Tree(null, "/", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "q", new Tree[] { }), new Tree(null, "u", new Tree[] { }), @@ -601,8 +624,10 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), new Tree(null, "o", new Tree[] { }), new Tree(null, "r", new Tree[] { }), - new Tree(null, "d", new Tree[] { })})})})})}), - new Tree(null, "rewrite", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "S", new Tree[] { }), + new Tree(null, "d", new Tree[] { })})})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})})}), + new Tree(null, "rewrite", new Tree[] { new Tree(null, "/", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "q", new Tree[] { }), new Tree(null, "u", new Tree[] { }), @@ -617,8 +642,10 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "o", new Tree[] { }), new Tree(null, "t", new Tree[] { }), new Tree(null, "e", new Tree[] { }), - new Tree(null, "d", new Tree[] { })})})})})}), - new Tree(null, "=>", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "S", new Tree[] { }), + new Tree(null, "d", new Tree[] { })})})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})})}), + new Tree(null, "=>", new Tree[] { new Tree(null, "/", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "s", new Tree[] { }), new Tree(null, "e", new Tree[] { }), new Tree(null, "q", new Tree[] { }), new Tree(null, "u", new Tree[] { }), @@ -630,6 +657,8 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, ">", new Tree[] { })})})}), new Tree(null, "literal", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "(", new Tree[] { }), new Tree(null, ")", new Tree[] { })})})})}), + new Tree(null, "nonTerminalY", new Tree[] { new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), + new Tree(null, "s", new Tree[] { })})})})}), new Tree(null, "sify", new Tree[] { new Tree(null, null, new Tree[] { new Tree(null, "w", new Tree[] { }), new Tree(null, "r", new Tree[] { }), new Tree(null, "a", new Tree[] { }), @@ -859,7 +888,7 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), new Tree(null, "range", new Tree[] { new Tree(null, "~", new Tree[] { }), new Tree(null, null, new Tree[] { new Tree(null, "range0", new Tree[] { new Tree(null, "n", new Tree[] { })}), new Tree(null, "range0", new Tree[] { new Tree(null, "r", new Tree[] { })})})})})})})})})})})}), - new Tree(null, null, new Tree[] { new Tree(null, null, new Tree[] { })})}) + new Tree(null, null, new Tree[] { })}) // DO NOT EDIT STUFF ABOVE: IT IS AUTOMATICALLY GENERATED ; } @@ -870,3 +899,6 @@ new Tree(null, "gram", new Tree[] { new Tree(null, null, new Tree[] { }), + + +