Start work on testing the evaluator

FossilOrigin-Name: 530cc9567bc825fd8a7eb21f2ca12dbf7ecbecae3ed02638537dc4a8dca9ae1a

1 files changed, 12 insertions, 1 deletions

diff --git a/src/lib/aplwc_internal.h b/src/lib/aplwc_internal.h
index 833a351..4ad30f8 100644
--- a/src/lib/aplwc_internal.h
+++ b/src/lib/aplwc_internal.h
@@ -53,8 +53,17 @@ struct token_list {
 	struct token tokens[1];
 };
 
+enum value_tag {
+	VALUE_NUMBER
+};
+
+struct aplwc_value {
+	struct aplwc *aplwc;
+	enum value_tag tag;
+};
+
 /* eval.c */
-void eval_line(struct aplwc_line *);
+struct aplwc_value *eval_line(struct aplwc_line *);
 
 /* memory.c */
 struct memory memory_init(uint8_t *, size_t);
@@ -62,10 +71,12 @@ struct aplwc *memory_alloc_aplwc(struct memory *);
 struct aplwc_line *memory_alloc_aplwc_line(struct memory *);
 struct string *memory_alloc_string(struct memory *, size_t);
 struct token_list *memory_alloc_token_list(struct memory *, size_t);
+struct aplwc_value *memory_alloc_aplwc_value(struct memory *);
 void memory_free_aplwc(struct memory *, struct aplwc *);
 void memory_free_aplwc_line(struct memory *, struct aplwc_line *);
 void memory_free_string(struct memory *, struct string *);
 void memory_free_token_list(struct memory *, struct token_list *);
+void memory_free_aplwc_value(struct memory *, struct aplwc_value *);
 
 /* string.c */
 struct string *chars_to_string(struct aplwc *, const char *);