erpcgen/C++: Add namespace and remove same name typedefs

- Only typdefs for same name structs and unions are removed
- Constant variable declarations are not namespaced

Author: Häfele, Philipp

erpcgen/src/CGenerator.cpp

@@ -765,6 +765,8 @@ void CGenerator::makeAliasesTemplateData()
             DataType *elementDataType = aliasType->getElementType();
             setTemplateComments(aliasType, aliasInfo);
 
+            aliasInfo["isSameNameTypedef"] = false;
+
             if (elementDataType->getName() != "")
             {
                 string realType;
@@ -785,6 +787,7 @@ void CGenerator::makeAliasesTemplateData()
                 if (elementDataType->getName() == aliasType->getName() ||
                     getOutputName(elementDataType, false) == aliasType->getName())
                 {
+                    aliasInfo["isSameNameTypedef"] = true;
                     if (elementDataType->isStruct())
                     {
                         realType = "struct " + realType;

erpcgen/src/templates/c_common_header.template

@@ -40,6 +40,9 @@ extern "C"
 
 #if !defined(ERPC_TYPE_DEFINITIONS{$scopeNamePrefix}{$scopeNameC})
 #define ERPC_TYPE_DEFINITIONS{$scopeNamePrefix}{$scopeNameC}
+{% if not cCommonHeaderFile %}
+{$fillNamespaceBegin()}
+{% endif -- not cCommonHeaderFile %}
 {% if not empty(enums) %}
 
 // Enumerators data types declarations
@@ -67,7 +70,9 @@ typedef {$alias.unnamedType}
 {%    endfor -- alias.unnamed.members %}
 } {$alias.unnamedName};
 {%   else -- alias.typenameName %}
+{%    if (cCommonHeaderFile) || (not alias.isSameNameTypedef) %}
 typedef {$alias.typenameName};{$alias.ilComment}
+{%    endif -- (cCommonHeaderFile) || (not alias.isSameNameTypedef) %}
 {%   endif -- alias.typenameName %}
 {%  endfor -- aliases %}
 {% endif -- aliases %}
@@ -95,8 +100,10 @@ union {$us.name}
 {%    endif -- us.type == "union/struct" %}
 {%   endif -- !us.isExternal %}
 {%  endfor -- symbols %}
-
 {% endif -- nonExternalStruct || nonExternalUnion %}
+{% if not cCommonHeaderFile %}
+{$fillNamespaceEnd()}
+{% endif -- not cCommonHeaderFile %}
 {% if not empty(consts) %}
 
 // Constant variable declarations

test/test_annotations/external.h

@@ -16,6 +16,10 @@
 
 #include <stdint.h>
 
+#ifdef __cplusplus
+namespace erpcShim {
+#endif
+
 // Enumerators data types declarations
 typedef enum myEnum
 {
@@ -36,6 +40,10 @@ struct fooStruct
     float y;
 };
 
+#ifdef __cplusplus
+} // namespace erpcShim
+#endif
+
 // Constant variable declarations
 const int32_t i = 4;