Added body of some of the functions (not compiling) #t51

src/intermediate_code.h

@@ -12,24 +12,48 @@
 //   - Subtraction, multiplication, division, modulo
 #include "symbol_table.h"
 
-typedef enum {ADD, SUB, MUL, DIV} Op; // TODO: add all the instructions
-typedef struct {
+// these are from page 364
+typedef enum {
+        LABEL,          // this is not in the book
+        ADD,            // 1 from the list
+        SUB,            // 1
+        MUL,            // 1
+        DIV,            // 1
+        MOD,            // 1
+        OR,             // 1
+        AND,            // 1
+        NEG,            // 2
+        NOT,            // 2
+        ASSIGN,         // 3
+        GOTO,           // 4
+        CGOTO,          // 5
+        LESSTHEN,       // 6 rule 1 + 5
+        EQUALTO,        // 6 rule 1 + 5
+        PARAM,          // 7
+        CALL            // 7
+
+} Op;
+typedef struct Instruction {
         Op opcode;
         TableNode * result;
         TableNode * operand1;
         TableNode * operand2;
-        int label;
+        char * label;
+
+
         int index;
+
+
         Instruction * prev;
         Instruction * next;
 } Instruction;
 
-Instruction * start;
-Instruction * current;
+extern Instruction * begin;
+extern Instruction * current;
 
 
-void emit_binary_op(char* result, char* op, char* arg1, char* arg2);
-void emit_unary_op(char* result, char* op, char* arg);
+void emit_binary_op(char* result, Op op, char* arg1, char* arg2);
+void emit_unary_op(char* result, Op op, char* arg);
 void emit_assignment(char* target, char* source);
 // TODO: Find out what these are suposed to do. Guess is create an entry in
 //       the list of instructions. Guess is that its suposed to ret a struct ptr