Fix parser error containing multiple #define statements inside an enum.

The second #define fails to parse:

  enum FooEnum {
    ENUM1 = 0,
    ENUM2 = 1,

  #define MACRO_DEF1 "Hello"
  #define MACRO_DEF2 "World!"

    ENUM3 = 2,
    ENUM4 = 3,
  };

Bug mentioned at https://sourceforge.net/p/swig/patches/333/

CHANGES.current

@@ -7,6 +7,24 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.0.0 (in progress)
 ===========================
 
+2019-02-16: wsfulton
+            Fix parser error containing multiple #define statements inside an enum.
+
+            The second #define fails to parse:
+
+              enum FooEnum {
+                ENUM1 = 0,
+                ENUM2 = 1,
+
+              #define MACRO_DEF1 "Hello"
+              #define MACRO_DEF2 "World!"
+
+                ENUM3 = 2,
+                ENUM4 = 3,
+              };
+
+            Bug mentioned at https://sourceforge.net/p/swig/patches/333/
+
 2019-02-14: wsfulton
             Add some missing copy constructors into STL containers.
 

Examples/test-suite/common.mk

@@ -83,7 +83,6 @@ Makefile: $(srcdir)/Makefile.in ../../../config.status
 # Broken C++ test cases. (Can be run individually using: make testcase.cpptest)
 CPP_TEST_BROKEN += \
 	constants \
-	cpp_broken \
 	director_nested_class \
 	exception_partial_info \
 	extend_variable \

Examples/test-suite/cpp_broken.i

@@ -1,12 +0,0 @@
-%module cpp_broken
-
-
-// bug #940318
-%inline %{
-typedef enum {
-eZero = 0
-#define ONE 1
-} EFoo;
-%}
-
-

Examples/test-suite/enum_macro.i

@@ -97,3 +97,45 @@ enum Greeks13
 #define GREEK13 -13
 };
 
+/* Multiple macros */
+
+%inline %{
+enum Greeks14
+{
+#define GREEK14a -14
+#define GREEK14b -140
+    theta14,
+};
+
+enum Greeks15
+{
+    alpha15 = 150,
+    beta15 = 151,
+#define GREEK15a -150
+#define GREEK15b -151
+    theta15 = 152,
+    delta15 = 153
+};
+
+enum Greeks16
+{
+    alpha16 = 160,
+    beta16 = 161,
+#define GREEK16a -160
+#define GREEK16b -161
+#define GREEK16c -162
+    theta16 = 162,
+    delta16 = 163
+};
+
+enum Greeks17
+{
+    alpha17 = 170,
+    beta17 = 171,
+    theta17 = 172,
+    delta17 = 173
+#define GREEK17a -170
+#define GREEK17b -171
+#define GREEK17c -172
+};
+%}

Examples/test-suite/java/enum_macro_runme.java

@@ -88,6 +88,30 @@ public class enum_macro_runme {
     {
       Greeks13 a = null;
     }
+    {
+      Greeks15 a = Greeks15.alpha15;
+      a = Greeks15.beta15;
+      a = Greeks15.theta15;
+      a = Greeks15.delta15;
+      if (a.swigValue() != 153)
+        throw new RuntimeException("Greeks15");
+    }
+    {
+      Greeks16 a = Greeks16.alpha16;
+      a = Greeks16.beta16;
+      a = Greeks16.theta16;
+      a = Greeks16.delta16;
+      if (a.swigValue() != 163)
+        throw new RuntimeException("Greeks16");
+    }
+    {
+      Greeks17 a = Greeks17.alpha17;
+      a = Greeks17.beta17;
+      a = Greeks17.theta17;
+      a = Greeks17.delta17;
+      if (a.swigValue() != 173)
+        throw new RuntimeException("Greeks17");
+    }
   }
 }
 

Source/CParse/parser.y

@@ -6342,8 +6342,12 @@ ename          :  identifier { $$ = $1; }
 	       |  empty { $$ = (char *) 0;}
 	       ;
 
-optional_ignored_define
+constant_directives : constant_directive
-		: constant_directive
+		| constant_directive constant_directives
+		;
+
+optional_ignored_defines
+		: constant_directives
 		| empty
 		;
 
@@ -6364,7 +6368,7 @@ enumlist	: enumlist_item optional_ignored_define_after_comma {
 		  Setattr($2,"_last",NULL);
 		  $$ = $1;
 		}
-		| optional_ignored_define {
+		| optional_ignored_defines {
 		  $$ = 0;
 		}
 		;
@@ -6380,7 +6384,7 @@ enumlist_tail	: COMMA enumlist_item {
 		}
 		;
 
-enumlist_item	: optional_ignored_define edecl_with_dox optional_ignored_define {
+enumlist_item	: optional_ignored_defines edecl_with_dox optional_ignored_defines {
 		  $$ = $2;
 		}
 		;