1 files changed, 116 insertions, 0 deletions
diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime.Test/BuildOptions/ProfileTreeGrammarHelper.cs b/runtime/CSharp3/Sources/Antlr3.Runtime.Test/BuildOptions/ProfileTreeGrammarHelper.cs
new file mode 100644
index 0000000..47cc8a8
--- /dev/null
+++ b/runtime/CSharp3/Sources/Antlr3.Runtime.Test/BuildOptions/ProfileTreeGrammarHelper.cs
@@ -0,0 +1,116 @@
+/*
+ * [The "BSD licence"]
+ * Copyright (c) 2005-2008 Terence Parr
+ * All rights reserved.
+ *
+ * Conversion to C#:
+ * Copyright (c) 2008-2009 Sam Harwell, Pixel Mine, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System.Collections.Generic;
+using Antlr.Runtime.Tree;
+
+using BigInteger = java.math.BigInteger;
+using Console = System.Console;
+
+partial class ProfileTreeGrammar
+{
+    /** Points to functions tracked by tree builder. */
+    private List<CommonTree> functionDefinitions;
+
+    /** Remember local variables. Currently, this is only the function parameter.
+     */
+    private readonly IDictionary<string, BigInteger> localMemory = new Dictionary<string, BigInteger>();
+
+    /** Remember global variables set by =. */
+    private IDictionary<string, BigInteger> globalMemory = new Dictionary<string, BigInteger>();
+
+    /** Set up an evaluator with a node stream; and a set of function definition ASTs. */
+    public ProfileTreeGrammar( CommonTreeNodeStream nodes, List<CommonTree> functionDefinitions )
+        : this( nodes )
+    {
+        this.functionDefinitions = functionDefinitions;
+    }
+
+    /** Set up a local evaluator for a nested function call. The evaluator gets the definition
+     *  tree of the function; the set of all defined functions (to find locally called ones); a
+     *  pointer to the global variable memory; and the value of the function parameter to be
+     *  added to the local memory.
+     */
+    private ProfileTreeGrammar( CommonTree function,
+                 List<CommonTree> functionDefinitions,
+                 IDictionary<string, BigInteger> globalMemory,
+                 BigInteger paramValue )
+        // Expected tree for function: ^(FUNC ID ( INT | ID ) expr)
+        : this( new CommonTreeNodeStream( function.GetChild( 2 ) ), functionDefinitions )
+    {
+        this.globalMemory = globalMemory;
+        localMemory[function.GetChild( 1 ).Text] = paramValue;
+    }
+
+    /** Find matching function definition for a function name and parameter
+     *  value. The first definition is returned where (a) the name matches
+     *  and (b) the formal parameter agrees if it is defined as constant.
+     */
+    private CommonTree findFunction( string name, BigInteger paramValue )
+    {
+        foreach ( CommonTree f in functionDefinitions )
+        {
+            // Expected tree for f: ^(FUNC ID (ID | INT) expr)
+            if ( f.GetChild( 0 ).Text.Equals( name ) )
+            {
+                // Check whether parameter matches
+                CommonTree formalPar = (CommonTree)f.GetChild( 1 );
+                if ( formalPar.Token.Type == INT
+                    && !new BigInteger( formalPar.Token.Text ).Equals( paramValue ) )
+                {
+                    // Constant in formalPar list does not match actual value -> no match.
+                    continue;
+                }
+                // Parameter (value for INT formal arg) as well as fct name agrees!
+                return f;
+            }
+        }
+        return null;
+    }
+
+    /** Get value of name up call stack. */
+    public BigInteger getValue( string name )
+    {
+        BigInteger value;
+        if ( localMemory.TryGetValue( name, out value ) && value != null )
+        {
+            return value;
+        }
+        if ( globalMemory.TryGetValue( name, out value ) && value != null )
+        {
+            return value;
+        }
+        // not found in local memory or global memory
+        Console.Error.WriteLine( "undefined variable " + name );
+        return new BigInteger( "0" );
+    }
+}