Parse functions directly (#2015)

This patch adds direct function source code parsing, which
is useful to avoid source code duplications. The patch
also improves the Function constructor.

JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com

jerry-core/parser/js/js-parser.h

@@ -128,8 +128,9 @@ typedef struct
 } parser_error_location_t;
 
 /* Note: source must be a valid UTF-8 string */
-ecma_value_t parser_parse_script (const uint8_t *source_p, size_t size, bool is_strict,
-                                  ecma_compiled_code_t **bytecode_data_p);
+ecma_value_t parser_parse_script (const uint8_t *arg_list_p, size_t arg_list_size,
+                                  const uint8_t *source_p, size_t source_size,
+                                  bool is_strict, ecma_compiled_code_t **bytecode_data_p);
 
 const char *parser_error_to_string (parser_error_t);