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

src/intermediate_code.c

@@ -1,85 +1,113 @@
+#include <stdio.h>
 #include "intermediate_code.h"
+#include "symbol_table.h"
 
-
+Instruction * begin;
-start = current = NULL;
+Instruction * current;
-
 
 
 // TODO: this is here to bring your attention to the comment bellow.
 // check if start is NULL if it is assign it to the start globle variable
 // otherwise make it next of current and set cur to your instruction.
 
-
+void emit_helper(void){
+        Instruction * inst = calloc(1, sizeof(*inst));
+        if(begin == NULL){
+                begin = current = inst;
+                current->index = 1;
+        } else {
+                current->next = inst;
+                inst->prev = current;
+                inst->index = current->index++;
+                current = inst;
+        }
+}
 
  void emit_binary_op(char* result, Op op, char* arg1, char* arg2){
-        Instruction * inst = calloc(1, sizeof(*inst));
+        emit_helper();
-        if(start == NULL){
-                start = current = inst;
-                current->index = 1;
-        } else {
-                current->next = inst;
-                inst->prev = current;
-                inst->index = current->index++;
-                current = inst;
-        }
         current->opcode = op;
-        current->result = look_up(result);
+        current->result = look_up(cur, result);
-        current->operand1 = look_up(arg1);
+        current->operand1 = look_up(cur, arg1);
-        current->operand2 = look_up(arg2);
+        current->operand2 = look_up(cur, arg2);
         return;
  }
- void emit_unary_op(char* result, Oo op, char* arg){
+
-        Instruction * inst = calloc(1, sizeof(*inst));
+ void emit_unary_op(char* result, Op op, char* arg){
-        if(start == NULL){
+        emit_helper();
-                start = current = inst;
-                current->index = 1;
-        } else {
-                current->next = inst;
-                inst->prev = current;
-                inst->index = current->index++;
-                current = inst;
-        }
         current->opcode = op;
-        current->result = look_up(result);
+        current->result = look_up(cur, result);
-        current->operand1 = look_up(arg);
+        current->operand1 = look_up(cur, arg);
         return;
  }
+
  void emit_assignment(char* target, char* source){
-         return;
+        emit_helper();
+        current->opcode = ADD; // TODO: replace with move
+        current->result = look_up(cur, target);
+        current->operand1 = look_up(cur, source);
+        return;
  }
+
 void emit_as_file(FILE * out_file, Instruction * instr_arr){
+        if(instr_arr == NULL){
+                return;
+        }
+
+        //fprintf(out_file,
         return;
 }
 
 
 void emit_label(char* label){
+        emit_helper();
+        current->opcode = LABEL;
+        current->label = label;
         return;
 }
 void emit_jump(char* label){
+        emit_helper();
+        current->opcode = GOTO;
+        current->label = label;
         return;
 }
 void emit_conditional_jump(char* condition, char* label){
+        emit_helper();
+        current->opcode = CGOTO; // I am positive this needs to be 2 instructions
+        current->label = label;
         return;
 }
 
 
 
 void emit_function_start(char* name){
+        emit_helper();          // actualy what is this?
+        current->opcode = LABLE; // I think this is right TODO: ask
+        current->label = name;
         return;
 }
 void emit_parameter(char* param){
+        emit_helper();
+        current->opcode = PARAM;
+        current->operand1 = look_up(cur, param);
         return;
 }
 void emit_function_call(char* result, char* name){
+        emit_helper();
+        current->opcode = CALL;
+        current->operand1 = look_up(cur, name);
+        current->result = look_up(cur, result);
         return;
 }
 void emit_return(char* value){
+        emit_helper();
         return;
 }
 void emit_reserve(char* result, char* type_name, int size){
+        emit_helper();
         return;
 }
 void emit_release(char* pointer){
+        emit_helper();
         return;
 }
 

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
+// these are from page 364
-typedef struct {
+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;
+extern Instruction * begin;
-Instruction * current;
+extern Instruction * current;
 
 
-void emit_binary_op(char* result, char* op, char* arg1, char* arg2);
+void emit_binary_op(char* result, Op op, char* arg1, char* arg2);
-void emit_unary_op(char* result, char* op, char* arg);
+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