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inter_code.c
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271 lines (267 loc) · 9.99 KB
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#include "inter_code.h"
#include "syntax_tree.h"
#include "syntax.tab.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
InterCode inter_codes = NULL;
InterCode tail = NULL;
void insert_inter_code(int kind, ...) {
InterCode ic = malloc(sizeof(struct InterCode_));
ic->kind = kind;
va_list p_args;
va_start(p_args, kind);
switch (kind) {
case FUNC:
ic->u.func.name = va_arg(p_args, char *);
break;
case CALL:
ic->u.call.left = va_arg(p_args, Operand);
ic->u.call.name = va_arg(p_args, char *);
break;
case RETURN:
case PARAM:
case ARG:
case READ:
case WRITE:
case LABEL:
case GOTO:
ic->u.unop.op1 = va_arg(p_args, Operand);
break;
case ASSIGNOP:
case LOAD:
case STORE:
case ADDRESS:
case DEC:
ic->u.assign.left = va_arg(p_args, Operand);
ic->u.assign.right = va_arg(p_args, Operand);
break;
case PLUS:
case MINUS:
case STAR:
case DIV:
case GE:
case LE:
case GEQ:
case LEQ:
case EQ:
case NEQ:
ic->u.binop.op1 = va_arg(p_args, Operand);
ic->u.binop.op2 = va_arg(p_args, Operand);
ic->u.binop.op3 = va_arg(p_args, Operand);
break;
default:
exit(-1);
}
if (inter_codes == NULL) {
inter_codes = ic;
} else {
tail->next = ic;
}
tail = ic;
}
char get_operand(Operand op) {
switch (op->kind) {
case VARIABLE:
return 'v';
case CONSTANT:
return '#';
case TEMP:
return 't';
case LABEL:
return 'l';
default:
return 'e';
}
}
void print_inter_code(const char *filename) {
FILE *f = fopen(filename, "w");
for (InterCode ic = inter_codes; ic != NULL; ic = ic->next) {
switch (ic->kind) {
case LABEL:
if (ic->u.unop.op1 != NULL) {
fprintf(f, "LABEL %c%d :\n", get_operand(ic->u.unop.op1), ic->u.unop.op1->u.no);
}
break;
case FUNC:
if (ic->u.func.name != NULL) {
fprintf(f, "FUNCTION %s :\n", ic->u.func.name);
}
break;
case ASSIGNOP: {
Operand left = ic->u.assign.left;
Operand right = ic->u.assign.right;
if (left != NULL && right != NULL) {
fprintf(f, "%c%d := %c%d\n", get_operand(left), left->u.no, get_operand(right), right->u.no);
}
break;
}
case PLUS: {
Operand res = ic->u.binop.op1;
Operand op1 = ic->u.binop.op2;
Operand op2 = ic->u.binop.op3;
if (res != NULL && op1 != NULL && op2 != NULL) {
fprintf(f, "%c%d := %c%d + %c%d\n", get_operand(res), res->u.no, get_operand(op1), op1->u.no, get_operand(op2), op2->u.no);
}
break;
}
case MINUS: {
Operand res = ic->u.binop.op1;
Operand op1 = ic->u.binop.op2;
Operand op2 = ic->u.binop.op3;
if (res != NULL && op1 != NULL && op2 != NULL) {
fprintf(f, "%c%d := %c%d - %c%d\n", get_operand(res), res->u.no, get_operand(op1), op1->u.no, get_operand(op2), op2->u.no);
}
break;
}
case STAR: {
Operand res = ic->u.binop.op1;
Operand op1 = ic->u.binop.op2;
Operand op2 = ic->u.binop.op3;
if (res != NULL && op1 != NULL && op2 != NULL) {
fprintf(f, "%c%d := %c%d * %c%d\n", get_operand(res), res->u.no, get_operand(op1), op1->u.no, get_operand(op2), op2->u.no);
}
break;
}
case DIV: {
Operand res = ic->u.binop.op1;
Operand op1 = ic->u.binop.op2;
Operand op2 = ic->u.binop.op3;
if (res != NULL && op1 != NULL && op2 != NULL) {
fprintf(f, "%c%d := %c%d / %c%d\n", get_operand(res), res->u.no, get_operand(op1), op1->u.no, get_operand(op2), op2->u.no);
}
break;
}
case ADDRESS: {
Operand left = ic->u.assign.left;
Operand right = ic->u.assign.right;
if (left != NULL && right != NULL) {
fprintf(f, "%c%d := &%c%d\n", get_operand(left), left->u.no, get_operand(right), right->u.no);
}
break;
}
case LOAD: {
Operand left = ic->u.assign.left;
Operand right = ic->u.assign.right;
if (left != NULL && right != NULL) {
fprintf(f, "%c%d := *%c%d\n", get_operand(left), left->u.no, get_operand(right), right->u.no);
}
break;
}
case STORE: {
Operand left = ic->u.assign.left;
Operand right = ic->u.assign.right;
if (left != NULL && right != NULL) {
fprintf(f, "*%c%d := %c%d\n", get_operand(left), left->u.no, get_operand(right), right->u.no);
}
break;
}
case GOTO: {
if (ic->u.unop.op1 != NULL) {
fprintf(f, "GOTO %c%d\n", get_operand(ic->u.unop.op1), ic->u.unop.op1->u.no);
}
break;
}
case GE: {
Operand op1 = ic->u.binop.op1;
Operand op2 = ic->u.binop.op2;
Operand label = ic->u.binop.op3;
if (op1 != NULL && op2 != NULL && label != NULL) {
fprintf(f, "IF %c%d > %c%d GOTO %c%d\n", get_operand(op1), op1->u.no, get_operand(op2), op2->u.no, get_operand(label), label->u.no);
}
break;
}
case GEQ: {
Operand op1 = ic->u.binop.op1;
Operand op2 = ic->u.binop.op2;
Operand label = ic->u.binop.op3;
if (op1 != NULL && op2 != NULL && label != NULL) {
fprintf(f, "IF %c%d >= %c%d GOTO %c%d\n", get_operand(op1), op1->u.no, get_operand(op2), op2->u.no, get_operand(label), label->u.no);
}
break;
}
case LE: {
Operand op1 = ic->u.binop.op1;
Operand op2 = ic->u.binop.op2;
Operand label = ic->u.binop.op3;
if (op1 != NULL && op2 != NULL && label != NULL) {
fprintf(f, "IF %c%d < %c%d GOTO %c%d\n", get_operand(op1), op1->u.no, get_operand(op2), op2->u.no, get_operand(label), label->u.no);
}
break;
}
case LEQ: {
Operand op1 = ic->u.binop.op1;
Operand op2 = ic->u.binop.op2;
Operand label = ic->u.binop.op3;
if (op1 != NULL && op2 != NULL && label != NULL) {
fprintf(f, "IF %c%d <= %c%d GOTO %c%d\n", get_operand(op1), op1->u.no, get_operand(op2), op2->u.no, get_operand(label), label->u.no);
}
break;
}
case NEQ: {
Operand op1 = ic->u.binop.op1;
Operand op2 = ic->u.binop.op2;
Operand label = ic->u.binop.op3;
if (op1 != NULL && op2 != NULL && label != NULL) {
fprintf(f, "IF %c%d != %c%d GOTO %c%d\n", get_operand(op1), op1->u.no, get_operand(op2), op2->u.no, get_operand(label), label->u.no);
}
break;
}
case EQ: {
Operand op1 = ic->u.binop.op1;
Operand op2 = ic->u.binop.op2;
Operand label = ic->u.binop.op3;
if (op1 != NULL && op2 != NULL && label != NULL) {
fprintf(f, "IF %c%d == %c%d GOTO %c%d\n", get_operand(op1), op1->u.no, get_operand(op2), op2->u.no, get_operand(label), label->u.no);
}
break;
}
case RETURN:
if (ic->u.unop.op1 != NULL) {
fprintf(f, "RETURN %c%d\n", get_operand(ic->u.unop.op1), ic->u.unop.op1->u.no);
}
break;
case DEC: {
Operand left = ic->u.assign.left;
Operand right = ic->u.assign.right;
if (left != NULL && right != NULL) {
fprintf(f, "DEC %c%d %d\n", get_operand(left), left->u.no, right->u.no);
}
break;
}
case ARG: {
if (ic->u.unop.op1 != NULL) {
fprintf(f, "ARG %c%d\n", get_operand(ic->u.unop.op1), ic->u.unop.op1->u.no);
}
break;
}
case PARAM: {
if (ic->u.unop.op1 != NULL) {
fprintf(f, "PARAM %c%d\n", get_operand(ic->u.unop.op1), ic->u.unop.op1->u.no);
}
break;
}
case READ: {
if (ic->u.unop.op1 != NULL) {
fprintf(f, "READ %c%d\n", get_operand(ic->u.unop.op1), ic->u.unop.op1->u.no);
}
break;
}
case CALL: {
Operand left = ic->u.call.left;
char *name = ic->u.call.name;
if (left != NULL && name != NULL) {
fprintf(f, "%c%d := CALL %s\n", get_operand(left), left->u.no, name);
}
break;
}
case WRITE: {
if (ic->u.unop.op1 != NULL) {
fprintf(f, "WRITE %c%d\n", get_operand(ic->u.unop.op1), ic->u.unop.op1->u.no);
}
break;
}
}
}
fclose(f);
}