Silence Visual Studio warnings in generated parser code

Author: tautschnig

src/ansi-c/parser.y

@@ -26,6 +26,13 @@ extern char *yyansi_ctext;
 
 #include "ansi_c_y.tab.h"
 
+#ifdef _MSC_VER
+#pragma warning(disable:4065)
+  // switch with default but no case labels
+#pragma warning(disable:4702)
+  // unreachable code
+#endif
+
 // statements have right recursion, deep nesting of statements thus
 // requires more stack space
 #define YYMAXDEPTH 25600

src/jsil/parser.y

@@ -16,6 +16,14 @@ extern char *yyjsiltext;
 #include <util/string_constant.h>
 
 #include "jsil_y.tab.h"
+
+#ifdef _MSC_VER
+#pragma warning(disable:4065)
+  // switch with default but no case labels
+#pragma warning(disable:4702)
+  // unreachable code
+#endif
+
 /*** token declaration **************************************************/
 %}
 

src/json/parser.y

@@ -1,4 +1,11 @@
 %{
+#ifdef _MSC_VER
+#pragma warning(disable:4065)
+  // switch with default but no case labels
+#pragma warning(disable:4702)
+  // unreachable code
+#endif
+
 // Strictly follows http://www.json.org/
 %}
 

src/xmllang/parser.y

@@ -12,6 +12,12 @@ int yyxmlerror(const std::string &error)
   return 0;
 }
 
+#ifdef _MSC_VER
+#pragma warning(disable:4065)
+  // switch with default but no case labels
+#pragma warning(disable:4702)
+  // unreachable code
+#endif
 %}
 
 %error-verbose