The objects returned to the user are now integer-based references,

not actual pointers. This means the aplwc internals can update those
pointers without the user noticing.

FossilOrigin-Name: 654c7d0ec85da295a7fb6ed381500410686b280f342fa81a30481f5e9a20c58a

1 files changed, 18 insertions, 8 deletions

diff --git a/src/include/aplwc.h b/src/include/aplwc.h
index 843fe42..6ba2e35 100644
--- a/src/include/aplwc.h
+++ b/src/include/aplwc.h
@@ -15,24 +15,34 @@ enum aplwc_rc {
 };
 
 struct aplwc;
-struct aplwc_line;
-struct aplwc_value;
+
+struct aplwc_ref {
+	struct aplwc *aplwc;
+	int id;
+};
+
+typedef struct { struct aplwc_ref ref; } AplwcLine;
+typedef struct { struct aplwc_ref ref; } AplwcValue;
 
 struct aplwc_fns {
 	void *(*alloc)(size_t, size_t, size_t *);
 	void (*dealloc)(void *);
 };
 
-enum aplwc_rc aplwc_new(struct aplwc **, struct aplwc_fns);
+struct aplwc *aplwc_new(struct aplwc_fns, enum aplwc_rc *);
 void aplwc_destroy(struct aplwc *);
+void aplwc_clear_line(AplwcLine *);
+void aplwc_clear_value(AplwcValue *);
+int aplwc_valid_line(AplwcLine);
+int aplwc_valid_value(AplwcValue);
 const char *aplwc_errstr_rc(enum aplwc_rc);
 const char *aplwc_errstr(struct aplwc *);
 enum aplwc_rc aplwc_last_error(struct aplwc *);
-struct aplwc_line *aplwc_read(struct aplwc *, const char *);
-void aplwc_free_line(struct aplwc_line *);
-struct aplwc_value *aplwc_eval(struct aplwc_line *);
-void aplwc_free_value(struct aplwc_value *);
-const char *aplwc_value_string(struct aplwc_value *);
+AplwcLine aplwc_read(struct aplwc *, const char *);
+void aplwc_free_line(AplwcLine);
+AplwcValue aplwc_eval(AplwcLine);
+void aplwc_free_value(AplwcValue);
+const char *aplwc_value_string(AplwcValue);
 enum aplwc_rc aplwc_load_module(struct aplwc *, const char *, const char *, int n);
 
 #endif /* APLWC_H */