Add more code

Add some funcitons to work with variables, add more instructions and add
ability to stop the code from `ccl_instruction`

1 files changed, 23 insertions, 5 deletions

diff --git a/src/instruction.c b/src/instruction.c
index 8597d74..72cca6c 100644
--- a/src/instruction.c
+++ b/src/instruction.c
@@ -1,18 +1,36 @@
 #include "instruction.h"
+#include "instructions.h"
 
+#include <stdbool.h>
+
+#include "readchar.h"
 #include "3cl.h"
 
+
 struct CCLFrame *ccl_instruction(struct CCL *ccl, struct CCLFrame *frame)
 {
     CCLInstruction instruction;
-    switch (ccl->code[frame->ep])
+    char chr = ccl_readchar(ccl, frame, CCL_RC_CCL_INSTR);
+
+    if (chr == '\0')
+    {
+        ccl->stopped = true;
+        return INST(nop)(ccl, frame);
+    }
+
+#define ISSW(NAME) instruction = INST(NAME); break
+    switch (chr)
     {
     case '\n': /* FALLTHROUGH */
     case ' ' : /* FALLTHROUGH */
-    case '\t': instruction = ccl_instruction_nop;
-    case '^' : instruction = ccl_instruction_pushzero;
-    case '+' : instruction = ccl_instruction_increment;
-    case '-' : instruction = ccl_instruction_decrement;
+    case '\t': ISSW(nop);
+    case '^' : ISSW(pushzero);
+    case '+' : ISSW(increment);
+    case '-' : ISSW(decrement);
+    case '*' : ISSW(add);
+    case '~' : ISSW(subtract);
+    case '%' : ISSW(reverse);
     }
+#undef INSW
     return instruction(ccl, frame);
 }