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--- guide:start [2023/04/21 17:38] – [Referencing the languages body] rajit
+++ guide:start [2023/04/21 17:43] (current) – [Referencing a particular language body] rajit
@@ Line 38: / Line 38: @@
 A language body can be accessed from the languages pointer. For example, for the chp body:
-<code>
+<code c++>
 act_chp *chp;
 chp = lang->getchp();
 </code>
+Note that the ''chp'' pointer will be NULL if there is no CHP sub-language specified within the process definition.
-Finally, to get a pointer to the actual object that stores the chp data structure:
+Finally, to get a pointer to the actual object that stores the CHP data structure:
 <code>
 act_chp_lang_t *chp_lang;
@@ Line 53: / Line 54: @@
 ==== The statement list data structure ====
-The linked list ''list_t'' contains elements of type ''listitem_t''. See ''list.h'' or ''list.c'' for details and available methods. This is used to store lists of statements. To get the actual statement stored in the list of statements, call ''list_value'' on the required ''listitem_t'' of the list:
+The linked list ''list_t'' contains elements of type ''listitem_t''. See ''list.h'' or ''list.c'' for details and available methods. In a CHP data structure, this is used to store lists of statements. To get the actual statement stored in the list of statements, call ''list_value'' on the required ''listitem_t'' of the list:
-<code>
+<code c++>
 act_chp_lang_t *c; // contains the overall chp body
 act_chp_lang_t *stmt;
@@ Line 60: / Line 61: @@
 listitem_t *li;
+// if c->type is ACT_CHP_SEMI or ACT_CHP_COMMA
 stmt_list = c->u.semi_comma.cmd; // returns the linked list