- documented

- fixed argument order for parse_payload

Source/charon/parser.h

@@ -26,13 +26,22 @@
 #include "types.h"
 #include "encodings.h"
 
-
+/**
+ * @brief The parser context stores state information for a parsing session.
+ */
 typedef struct parser_context_s parser_context_t;
 
 struct parser_context_s {
-
+	/**
+	 * @brief destructor of parsing_context
+	 * 
+	 * called it when finished a parsing session
+	 * 
+	 * @param this		the parser_context_t to destroy
+	 * @return
+	 * 					- SUCCESS in any case
+	 */
 	status_t (*destroy) (parser_context_t *this);
-	
 };
 
 
@@ -42,24 +51,36 @@ struct parser_context_s {
 typedef struct parser_s parser_t;
 
 struct parser_s {
-
+	
 	/**
-	 * @brief parses a chunk and generates a usable data struct
+	 * @brief generates a context for parsing
 	 *
-	 * Remember: Header and substructures are also seen as payloads
+	 * a context is used for a parsing session. It safes the state, such as
+	 * parsing position, available size, ...
 	 *
-	 * @param parser		parser Object
-	 * @param payload_type	definition of payload including encoding_rule
-	 * @param data			chunk of data to parse
-	 * @param[out]			allocated structure with parsed data
-	 * @return 			
-	 * 						- SUCCESSFUL if succeeded,
-	 * 		   				- NOT_SUPPORTED if payload_type is not supported
-	 * 						- OUT_OF_RES if out of ressources
-	 * 						- PARSE_ERROR if corrupted data found
+	 * @param parser			parser Object
+	 * @param chunk				chunk of data to parse in this session
+	 * @return 					the parsing_context, or NULL if failed
 	 */
+
 	parser_context_t *(*create_context) (parser_t *this, chunk_t data);
-	status_t (*parse_payload) (parser_t *this, parser_context_t* context, payload_type_t payload_type, void **data_struct);
+	
+	/**
+	 * @brief parses the next payload in the current context
+	 * 
+	 * @warning caller is responsible for freeing allocated data_struct
+	 *
+	 * @param parser			parser Object
+	 * @param payload_type		payload to parse
+	 * @param[out] data_struct	pointer where parsed data will be allocated
+	 * @param context			the parsing context, describing the current parsing session
+	 * @return 			
+	 * 							- SUCCESSFUL if succeeded,
+	 * 		   					- NOT_SUPPORTED if payload_type is not supported
+	 * 							- OUT_OF_RES if out of ressources
+	 * 							- PARSE_ERROR if corrupted data found
+	 */
+	status_t (*parse_payload) (parser_t *this, payload_type_t payload_type, void **data_struct, parser_context_t* context);
 	
 	/**
 	 * @brief Destroys a parser object
@@ -72,7 +93,12 @@ struct parser_s {
 };
 
 /**
- * Constructor to create a parser
+ * @brief Constructor to create a parser
+ * 
+ * The parser uses a set of payload_infos to know how to
+ * parse different payloads.
+ * 
+ * @param payload_infos			list of payload_info_t 
  *
  */
 parser_t *parser_create(payload_info_t **payload_infos);