# This patch splits the main do_action() method in order to solve the JVM memory limitation problem
# 
--- java_cup_v10k.old/java_cup/emit.java	1999-07-24 15:51:33.000000000 +0300
+++ java_cup_v10k/java_cup/emit.java	2009-01-21 11:12:13.000000000 +0200
@@ -340,7 +340,7 @@
       out.println("    this.parser = parser;");
       out.println("  }");
 
-      /* action method head */
+      /* main action method head */
       out.println();
       out.println("  /** Method with the actual generated action code. */");
       out.println("  public final java_cup.runtime.Symbol " + 
@@ -352,6 +352,38 @@
       out.println("    throws java.lang.Exception");
       out.println("    {");
 
+      /* split action code into several methods because of the JVM limitation of method size to 64KB */
+      final int splitBase = 100;
+      for (int splitIdx = 0; splitIdx < production.number(); splitIdx += splitBase) {
+    	  if (splitIdx > 0) {
+    		  out.print("      else ");
+    	  }
+    	  if (splitIdx + splitBase < production.number()) {
+    		  out.println("      if (" + pre("act_num") + " < " + (splitIdx + splitBase) + ") {");
+    	  } else {
+    		  out.println(" {");
+    	  }
+    	  out.println("        return " + pre("do_action") + ((splitIdx + splitBase) / splitBase) + "(");
+    	  out.println("             " + pre("act_num, ") + pre("parser,") + pre("stack,") + pre("top") + ");");
+    	  out.println("      }");
+      }
+      out.println("    }");
+      out.println();
+      
+      for (int splitIdx = 0; splitIdx < production.number(); splitIdx += splitBase) {
+      
+    	  /* splitted action method head */
+	      out.println();
+	      out.println("  /** Method with the actual generated action code. */");
+	      out.println("  public final java_cup.runtime.Symbol " + 
+			     pre("do_action") + ((splitIdx + splitBase)/splitBase) + "(");
+	      out.println("    int                        " + pre("act_num,"));
+	      out.println("    java_cup.runtime.lr_parser " + pre("parser,"));
+	      out.println("    java.util.Stack            " + pre("stack,"));
+	      out.println("    int                        " + pre("top)"));
+	      out.println("    throws java.lang.Exception");
+	      out.println("    {");
+	
       /* declaration of result symbol */
       /* New declaration!! now return Symbol
 	 6/13/96 frankf */
@@ -365,9 +397,9 @@
       out.println("        {");
 
       /* emit action code for each production as a separate case */
-      for (Enumeration p = production.all(); p.hasMoreElements(); )
-	{
-	  prod = (production)p.nextElement();
+	      
+	      for (int prodIdx = splitIdx; prodIdx < production.number() && prodIdx < splitIdx + splitBase; ++prodIdx) {
+	    	  prod = (production)production.find(prodIdx);
 
 	  /* case label */
           out.println("          /*. . . . . . . . . . . . . . . . . . . .*/");
@@ -471,6 +503,8 @@
       /* end of method */
       out.println("    }");
 
+      }
+
       /* end of class */
       out.println("}");
       out.println();