Choices complete, prep for merge into master

rust-ffi-demo/demo.c

@@ -35,12 +35,16 @@ int main() {
       storybook_advance_nooption(book);
       break;
     case (FOOTER_CHOICES):
-	    int n = storybook_get_num_choices(book);
-	    for (int i = 1; i <= n; i++) {
-		    Choice* choice = storybook_get_choice(book, i);
-		    printf("%d) %s\n", choice->option, choice->flavor);
-		    storybook_free_choice(choice);
+	    ChoiceList *list = storybook_get_choices(book);
+	    for (ChoiceList *curr = list; curr; curr = curr->next) {
+		    const StatCheck *sk = curr->choice.statcheck;
+		    if (sk) {
+			    printf("\e[0;31m");
 		    }
+		    printf("%d) %s", curr->choice.option, curr->choice.flavor);
+		    printf("\n\e[0m");
+	    }
+	    storybook_free_choices(list);
 	    uint32_t option;
 	    printf("Make a choice: ");
 	    scanf("%d", &option);

src/rust-base/cbindgen.toml

@@ -1,4 +1,6 @@
 language = "C"
+sys_includes = ["stdbool.h", "stdint.h"]
+include_guard = "STORYBOOK_H"
 
 [export.rename]
 

src/rust-base/src/lib.rs

@@ -185,6 +185,14 @@ pub mod ffi {
     pub struct Choice {
         option: usize,
         flavor: *const c_char,
+        statcheck: *const StatCheck,
+        statchange: *const StatChange,
+    }
+
+    #[repr(C)]
+    pub struct ChoiceList {
+        choice: Choice,
+        next: *mut ChoiceList,
     }
 
     #[repr(C)]
@@ -205,6 +213,42 @@ pub mod ffi {
             Choice {
                 option: choice.option,
                 flavor: CString::new(choice.flavor.clone()).unwrap().into_raw(),
+                statcheck: match &choice.stat_check {
+                    Some(statcheck) => {
+                        let statcheck = StatCheck::new(&statcheck);
+                        let statcheck = Box::from(statcheck);
+                        Box::into_raw(statcheck)
+                    }
+                    None => std::ptr::null(),
+                },
+                statchange: match &choice.stat_change {
+                    Some(statchange) => {
+                        let statchange = StatChange::new(&statchange);
+                        let statchange = Box::from(statchange);
+                        Box::into_raw(statchange)
+                            
+                    },
+                    None => std::ptr::null(),
+                },
+            }
+        }
+    }
+
+    impl StatCheck {
+        pub fn new(statcheck: &super::StatCheck) -> Self {
+            StatCheck {
+                stat: CString::new(statcheck.stat.clone()).unwrap().into_raw(),
+                value: statcheck.value,
+                rel: statcheck.rel as c_char,
+            }
+        }
+    }
+
+    impl StatChange {
+        pub fn new(statchange: &super::StatChange) -> Self {
+            StatChange {
+                stat: CString::new(statchange.stat.clone()).unwrap().into_raw(),
+                addend: statchange.addend,
             }
         }
     }
@@ -272,6 +316,7 @@ pub mod ffi {
         book.advance_nooption();
         
     }
+    
     #[no_mangle]
     pub extern fn storybook_advance_option(book: *mut Book, option: usize) {
         let book = get_book_from_ref(book);
@@ -279,34 +324,33 @@ pub mod ffi {
     }
 
     #[no_mangle]
-    pub extern fn storybook_get_num_choices(book: *mut Book) -> usize {
+    pub extern fn storybook_get_choices (book: *mut Book) -> *mut ChoiceList {
         let book = get_book_from_ref(book);
         let footer = &book.get_current().footer;
         if let super::Footer::Choices(choices) = footer {
-            choices.len()
-        } else {
-            panic!("Requested num choices but page is not choices.");
-        }
-    }
-
-    #[no_mangle]
-    pub extern fn storybook_get_choice(book: *mut Book, n: usize) -> *mut Choice {
-        let book = get_book_from_ref(book);
-        let footer = &book.get_current().footer;
-        if let super::Footer::Choices(choices) = footer {
-            let choice = choices.get(&n).expect("Requested option isn't present in choices.");
+            let mut list = std::ptr::null_mut();
+            let mut choices = choices.iter().collect::<Vec<(&usize, &super::Choice)>>();
+            choices.sort_by_key(|(&o, _)| o);
+            for (_, choice) in choices.into_iter().rev() {
                 let choice = Choice::new(choice);
-            let choice = Box::from(choice);
-            Box::into_raw(choice)
+                let node = Box::from(ChoiceList {
+                    choice,
+                    next: list,
+                });
+                list = Box::into_raw(node);
+            }
+            return list
         } else {
-            panic!("Requested a choice but page is not choices.");
+            panic!("Requested choices but page is not choices.");
         }
     }
 
     #[no_mangle]
-    pub extern fn storybook_free_choice(choice: *mut Choice) {
+    pub extern fn storybook_free_choices(mut list: *mut ChoiceList) {
         unsafe {
-            Box::from_raw(choice);
+            while !list.is_null() {
+                list = Box::from_raw(list).next;
+            }
         }
     }
 }