Update antlr to 3.5.2

1. Add post_update.sh to preserve build.gradle.
2. Add the patches/fix_infinite_recursion.diff to fix infinite
recursion.
3. Run tools/external_updater/updater.sh update antlr

(Should we upgrade to v4?)

Test: m javac-check RUN_ERROR_PRONE=true
Change-Id: Idafdb1cf6cf2310d983be612f36c5e6596a6e23f

1 files changed, 47 insertions, 0 deletions

diff --git a/runtime/CSharp3/Sources/Antlr3.Runtime.Test/SynpredTreeParser.g3 b/runtime/CSharp3/Sources/Antlr3.Runtime.Test/SynpredTreeParser.g3
new file mode 100644
index 0000000..6bb7df4
--- /dev/null
+++ b/runtime/CSharp3/Sources/Antlr3.Runtime.Test/SynpredTreeParser.g3
@@ -0,0 +1,47 @@
+/*
+ * [The "BSD license"]
+ * Copyright (c) 2011 Terence Parr
+ * All rights reserved.
+ *
+ * Conversion to C#:
+ * Copyright (c) 2011 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.
+ */
+
+tree grammar SynpredTreeParser;
+
+options
+{
+	language=CSharp3;
+	ASTLabelType=ITree;
+	output=AST;
+}
+
+@namespace{Antlr3.Runtime.Test}
+
+enterInsertOrDeleteData 
+	:	^( INSERT ( (DATA)=>DATA { _value = true; } | { _value = true; } ) .* )   
+	|	^( DELETE ( (DATA)=>DATA { _value = false; } | { _value = false; } ) .* )      
+	;