Keep function pointers from choking CMock (fixes issues #102, #222, #226)

lib/cmock_header_parser.rb

@@ -90,6 +90,9 @@ class CMockHeaderParser
     source.gsub!(/\)(\w)/, ') \1')                                                         # add space between parenthese and alphanumeric
     source.gsub!(/(^|\W+)(?:#{@c_strippables.join('|')})(?=$|\W+)/,'\1') unless @c_strippables.empty? # remove known attributes slated to be stripped
 
+    #scan standalone function pointers and remove them, because they can just be ignored
+    source.gsub!(/\w+\s*\(\s*\*\s*\w+\s*\)\s*\([^)]*\)\s*;/,';')
+
     #scan for functions which return function pointers, because they are a pain
     source.gsub!(/([\w\s\*]+)\(*\(\s*\*([\w\s\*]+)\s*\(([\w\s\*,]*)\)\)\s*\(([\w\s\*,]*)\)\)*/) do |m|
       functype = "cmock_#{@module_name}_func_ptr#{@typedefs.size + 1}"

test/system/test_compilation/parsing.h

@@ -50,3 +50,14 @@ extern unsigned long int incredible_descriptors(register const unsigned short a)
 int32_t example_c99_type(int32_t param1);
 
 void I2CIntRegister(uint32_t ui32Base, void (*pfnHandler)(void));
+
+/* these are function pointers, not function declarations USING a function pointer, and so should NOT get mocked */
+int (* func_pointer)(void);
+extern int (*another_func_pointer)(unsigned int argument);
+struct struct_to_be_ignored {
+  union {
+    int i32;
+    void *p;
+  } variant;
+  void (*a_function_pointer_in_a_struct)(void *);
+};

test/system/test_interactions/function_pointer_handling.yml

@@ -15,11 +15,11 @@
     void takes_const_function_ptr( unsigned int (* const)(int, char) );
     unsigned short (*returns_function_ptr( const char op_code ))( int, long int );
 
-  :source: 
+  :source:
     :header: |
       void exercise_function_pointer_param(void);
       unsigned short (*exercise_function_pointer_return( const char op_code ))( int, long int );
-      
+
       // functions for function pointer tests
       unsigned int dummy_function1(int a, char b);
       unsigned short dummy_function2(int a, long int b);
@@ -28,7 +28,7 @@
       /*
        * functions used in tests
        */
-       
+
       unsigned int dummy_function1(int a, char b)
       {
         // prevent compiler warnings by using everything