From 9a7e88e33213135da7c8fa3607ca455d997f4a39 Mon Sep 17 00:00:00 2001
From: c
Date: Mon, 4 Mar 2024 13:11:29 -0500
Subject: One can now load simple variables into memory.

---
 src/include/doer.h | 36 +++++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

(limited to 'src/include/doer.h')

diff --git a/src/include/doer.h b/src/include/doer.h
index 8f51266..afa80dd 100644
--- a/src/include/doer.h
+++ b/src/include/doer.h
@@ -4,8 +4,29 @@
 #include "util.h"
 #include "tree.h"
 
+typedef struct TARGET {
+   char* name;          // The name of the target (unique).
+   tree_t* tree;        // The tree to which the target refers.
+   struct TARGET* nxt;  // The next target in the list.
+} target_t;
+
+target_t* target_init(char* name, tree_t* tree);
+/*
+   Destroy a target.
+   - Destroys all subsequent targets.
+   - Frees `name`.
+   - Does not free `tree`.
+   Remember to NULL a parent target's `nxt`.
+*/
+void target_destroy(target_t* target);
+// Print out the target list. Useful for debugging.
+void target_print(target_t* target);
+
 typedef struct DOER {
-   tree_t* tree;
+   tree_t* tree;        // The tree the doer is reading from.
+   target_t* targets;   // The targets the doer must remember.
+   target_t* ltarget;   // The last target in the list (after which new
+                        // targets will be appended.)
 } doer_t;
 
 /* Creates a new parser. */
@@ -23,8 +44,13 @@ typedef struct BLINF {
    char name[24];
 } blinf_t;
 
-void doer_do_blin_print(doer_t* tree); // Built-in function `print`.
-void doer_do_blin_printl(doer_t* tree); // Built-in function `print`.
+void doer_add_target(doer_t* doer, target_t* target);
+
+// Built-in functions.
+// `print`: print a string.
+void blin_print(doer_t* tree);
+// `printl`: print a string, and add a newline.
+void blin_printl(doer_t* tree);
 
 void doer_do_block(doer_t* tree);
 void doer_do_expr(doer_t* tree);
@@ -37,8 +63,8 @@ void doer_do_def(doer_t* tree);
 void doer_do_call(doer_t* tree);
 
 const static blinf_t blinfs[] = {
-   { doer_do_blin_print, "print" },
-   { doer_do_blin_printl, "printl" }
+   { blin_print, "print" },
+   { blin_printl, "printl" }
 };
 
 #endif
-- 
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