1 files changed, 144 insertions, 0 deletions
diff --git a/sources/meta/scalac/ast/TreeNode.java b/sources/meta/scalac/ast/TreeNode.java
new file mode 100644
index 0000000000..514a9b058c
--- /dev/null
+++ b/sources/meta/scalac/ast/TreeNode.java
@@ -0,0 +1,144 @@
+/*     ____ ____  ____ ____  ______                                     *\
+**    / __// __ \/ __// __ \/ ____/    SOcos COmpiles Scala             **
+**  __\_ \/ /_/ / /__/ /_/ /\_ \       (c) 2002, LAMP/EPFL              **
+** /_____/\____/\___/\____/____/                                        **
+\*                                                                      */
+
+// $Id$
+
+package meta.scalac.ast;
+
+import meta.java.Type;
+import meta.java.JavaWriter;
+import meta.scalac.Phase;
+
+/** This class describes a tree node. */
+public class TreeNode {
+
+    //########################################################################
+    // Public Fields
+
+    public final String name;
+    public final TreeKind kind;
+    public final TreeSymbol symbol;
+    public String description;
+    public Phase start;
+    public Phase stop;
+    public TreeField[] fields;
+    public int arrays;
+
+    //########################################################################
+    // Public Constructors
+
+    public TreeNode(String name, TreeKind kind, TreeSymbol symbol) {
+        this(name, kind, symbol, new TreeField[0]);
+    }
+
+    public TreeNode(String name, TreeKind kind, TreeSymbol symbol,
+        TreeField[] fields)
+    {
+        this.name = name;
+        this.kind = kind;
+        this.symbol = symbol;
+        this.fields = fields;
+    }
+
+    //########################################################################
+    // Public Methods
+
+    public boolean hasExtClass() {
+        return hasSymbol();
+    }
+
+    public boolean hasSymbol() {
+        return symbol == symbol.HasSym || symbol == symbol.DefSym;
+    }
+
+    public boolean definesSymbol() {
+        return symbol == symbol.DefSym;
+    }
+
+    public Type getType(int rank) {
+        arrays = Math.max(arrays , rank);
+        return rank == 0 ? TreeType.Node(this) : Type.Array(getType(rank - 1));
+    }
+
+    public TreeNode setDescription(String description) {
+        this.description = description;
+        return this;
+    }
+
+    public TreeNode setRange(Phase start, Phase stop) {
+        this.start = start;
+        this.stop = stop;
+        return this;
+    }
+
+    public TreeNode noFields() {
+        fields = null;
+        return this;
+    }
+
+    public TreeNode addField(Type type, String name) {
+        TreeField[] array = new TreeField[fields.length + 1];
+        for (int i = 0; i < fields.length; i++) array[i] = fields[i];
+        array[fields.length] = new TreeField(type, name);
+        fields = array;
+        return this;
+    }
+
+    public JavaWriter printCase(JavaWriter writer, boolean wildcards) {
+        writer.print("case ").print(name);
+        if (fields!=null) printParams(writer.print("("),wildcards).print(")");
+        return writer.print(":").space();
+    }
+
+    public JavaWriter printParams(JavaWriter writer) {
+        return printParams(writer, false);
+    }
+
+    public JavaWriter printParams(JavaWriter writer, String prefix) {
+        return printParams(printPrefix(writer, prefix));
+    }
+
+    public JavaWriter printParams(JavaWriter writer, boolean wildcards) {
+        if (fields != null) for (int i = 0; i < fields.length; i++) {
+            if (i > 0) writer.print(", ");
+            if (wildcards) writer.print("_");
+            else writer.print(fields[i].type).space().print(fields[i].name);
+        }
+        return writer;
+    }
+
+    public JavaWriter printArgs(JavaWriter writer) {
+        if (fields != null) for (int i = 0; i < fields.length; i++) {
+            if (i > 0) writer.print(", ");
+            writer.print(fields[i].name);
+        }
+        return writer;
+    }
+
+    public JavaWriter printArgs(JavaWriter writer, String prefix) {
+        return printArgs(printPrefix(writer, prefix));
+    }
+
+    public JavaWriter printPrefix(JavaWriter writer, String prefix) {
+        if (prefix != null) {
+            writer.print(prefix);
+            if (fields != null && fields.length > 0 && prefix != null)
+                writer.print(", ");
+        }
+        return writer;
+    }
+
+    public JavaWriter printNew(JavaWriter writer) {
+        String classname = (hasExtClass() ? "Ext" : "") + name;
+        return printArgs(writer.print("new " + classname + "(")).print(")");
+    }
+
+    public String toString() {
+        return name;
+    }
+
+    //########################################################################
+}