Move STATIC_ASSERTs to .pb.c file.

This way the .pb.h will remain cleaner and easier to read.

generator/nanopb_generator.py

@@ -478,6 +478,28 @@ def generate_header(dependencies, headername, enums, messages):
     for msg in messages:
         yield msg.fields_declaration() + '\n'
     
+    yield '\n#ifdef __cplusplus\n'
+    yield '} /* extern "C" */\n'
+    yield '#endif\n'
+    
+    # End of header
+    yield '\n#endif\n'
+
+def generate_source(headername, enums, messages):
+    '''Generate content for a source file.'''
+    
+    yield '/* Automatically generated nanopb constant definitions */\n'
+    yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
+    yield '#include "%s"\n\n' % headername
+    
+    for msg in messages:
+        yield msg.default_decl(False)
+    
+    yield '\n\n'
+    
+    for msg in messages:
+        yield msg.fields_definition() + '\n\n'
+        
     if messages:
         count_required_fields = lambda m: len([f for f in msg.fields if f.rules == 'REQUIRED'])
         largest_msg = max(messages, key = count_required_fields)
@@ -538,31 +560,11 @@ def generate_header(dependencies, headername, enums, messages):
         yield '\n'
         yield '/* On some platforms (such as AVR), double is really float.\n'
         yield ' * These are not directly supported by nanopb, but see example_avr_double.\n'
+        yield ' * To get rid of this error, remove any double fields from your .proto.\n'
         yield ' */\n'
         yield 'STATIC_ASSERT(sizeof(double) == 8, DOUBLE_MUST_BE_8_BYTES)\n'
     
-    yield '\n#ifdef __cplusplus\n'
-    yield '} /* extern "C" */\n'
-    yield '#endif\n'
-    
-    # End of header
-    yield '\n#endif\n'
-
-def generate_source(headername, enums, messages):
-    '''Generate content for a source file.'''
-    
-    yield '/* Automatically generated nanopb constant definitions */\n'
-    yield '/* Generated by %s at %s. */\n\n' % (nanopb_version, time.asctime())
-    yield '#include "%s"\n\n' % headername
-    
-    for msg in messages:
-        yield msg.default_decl(False)
-    
-    yield '\n\n'
-    
-    for msg in messages:
-        yield msg.fields_definition() + '\n\n'
-
+    yield '\n'
 
 
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