The lemon parser generator now inserts yytestcase() macros on reduce action

and on each destructor, to verify that all have been executed.  yytestcase()
is a no-op by default but can be set to something more useful inside
of %include. (CVS 6755)

FossilOrigin-Name: fe9c9177340a3dc372ffa1b851030d005e0c46db

tool/lempar.c

@@ -64,6 +64,18 @@
 ** YYMINORTYPE objects to zero. */
 static const YYMINORTYPE yyzerominor = { 0 };
 
+/* Define the yytestcase() macro to be a no-op if is not already defined
+** otherwise.
+**
+** Applications can choose to define yytestcase() in the %include section
+** to a macro that can assist in verifying code coverage.  For production
+** code the yytestcase() macro should be turned off.  But it is useful
+** for testing.
+*/
+#ifndef yytestcase
+# define yytestcase(X)
+#endif
+
 
 /* Next are the tables used to determine what action to take based on the
 ** current state and lookahead token.  These tables are used to implement