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intercode.c
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intercode.c
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#include "node.h"
#include <assert.h>
#include "intercode.h"
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "type.h"
FILE* fp;
int var_no;
int label_num = 0;
InterCodes InterCodes_init(){
InterCodes temp = (InterCodes)malloc(sizeof(InterCodes_));
temp->prev = NULL;
temp->next = NULL;
return temp;
}
void InterCodes_link(InterCodes prev,InterCodes next){
if(prev == NULL){
prev = next;
return;
}
else if(next == NULL){
return;
}
InterCodes temp = prev;
while(temp->next != NULL){
temp = temp->next;
}
temp->next = next;
next->prev = prev;
}
void add_to_head(InterCodes codes){
if(codes == NULL){
printf("null add to head\n");
return;
}
InterCodes temp = intercodes_head;
if(temp == NULL){
printf("InterCodes_link error prev is NULL\n");
return;
}
while(temp->next != NULL){
temp = temp->next;
}
temp->next = codes;
codes->prev = temp;
}
void head_init(){
intercodes_head = InterCodes_init();
var_no = 1;
}
void printf_Operand(Operand p){
assert(p != NULL);
switch(p->kind){
case VARIABLE:
fprintf(fp,"%s",p->name);
break;
case CONSTANT:
fprintf(fp,"#%d",p->value);
break;
case TEMP:
fprintf(fp,"t%d",p->var_no);
break;
case LABEL:
fprintf(fp,"label%d",p->label_no);
break;
case FUNC_op:
fprintf(fp,"%s",p->func);
break;
case PARAM_op:
fprintf(fp,"%s",p->param);
break;
case ADDR_op:
fprintf(fp,"*%s",p->name);
break;
case op:
fprintf(fp,"%s",p->op);
break;
case REFERENCE:
fprintf(fp,"&%d",p->var_no);
break;
default:
break;
}
}
void printf_ASSIGN(InterCodes q){
InterCode p = q->code;
printf_Operand(p->assign.left);
fputs(" := ",fp);
printf_Operand(p->assign.right);
}
void printf_ADD(InterCodes q){
InterCode p = q->code;
printf_Operand(p->binop.result);
fputs(" := ",fp);
printf_Operand(p->binop.op1);
fputs(" + ",fp);
printf_Operand(p->binop.op2);
}
void printf_SUB(InterCodes q){
InterCode p = q->code;
printf_Operand(p->binop.result);
fputs(" := ",fp);
printf_Operand(p->binop.op1);
fputs(" - ",fp);
printf_Operand(p->binop.op2);
}
void printf_MUL(InterCodes q){
InterCode p = q->code;
printf_Operand(p->binop.result);
fputs(" := ",fp);
printf_Operand(p->binop.op1);
fputs(" * ",fp);
printf_Operand(p->binop.op2);
}
void printf_DIV(InterCodes q){
InterCode p = q->code;
printf_Operand(p->binop.result);
fputs(" := ",fp);
printf_Operand(p->binop.op1);
fputs(" / ",fp);
printf_Operand(p->binop.op2);
}
void printf_LABEL(InterCodes q){
InterCode p = q->code;
fputs("LABEL ",fp);
printf_Operand(p->onlyop.op);
fputs(" :",fp);
}
void printf_GOTO(InterCodes q){
InterCode p = q->code;
fputs("GOTO ",fp);
printf_Operand(p->onlyop.op);
}
void printf_RETURN(InterCodes q){
InterCode p = q->code;
fputs("RETURN ",fp);
printf_Operand(p->onlyop.op);
}
void printf_CALL(InterCodes q){
InterCode p = q->code;
printf_Operand(p->assign.left);
fputs(" := CALL ",fp);
printf_Operand(p->assign.right);
}
void printf_DEC(InterCodes q){
InterCode p = q->code;
fputs("DEC ",fp);
printf_Operand(p->assign.left);
fputs(" ",fp);
printf_Operand(p->assign.right);
}
void printf_ARG(InterCodes q){
InterCode p = q->code;
fputs("ARG ",fp);
printf_Operand(p->onlyop.op);
}
void printf_COND(InterCodes q){
InterCode p = q->code;
fputs("IF ",fp);
printf_Operand(p->cond.op1);
fprintf(fp," %s ",p->cond.op->op );
printf_Operand(p->cond.op2);
fputs(" ",fp);
}
void printf_READ(InterCodes q){
InterCode p = q->code;
fputs("READ ",fp);
printf_Operand(p->onlyop.op);
}
void printf_WRITE(InterCodes q){
InterCode p = q->code;
fputs("WRITE ",fp);
printf_Operand(p->onlyop.op);
}
void printf_FUNC(InterCodes q){
InterCode p = q->code;
fputs("FUNCTION ",fp);
printf_Operand(p->onlyop.op);
fputs(" :",fp);
}
void printf_PARAM(InterCodes q){
InterCode p = q->code;
fputs("PARAM ",fp);
printf_Operand(p->onlyop.op);
}
void show_all(char* output){
fp = fopen(output,"w");
if ( !fp )
{
perror(output);
return ;
}
InterCodes p = intercodes_head->next;assert(p->code!=NULL);
while(p!=NULL){
switch(p->code->kind){
case ASSIGN:
printf_ASSIGN(p);
break;
case ADD:
printf_ADD(p);
break;
case SUB:
printf_SUB(p);
break;
case MUL:
printf_MUL(p);
break;
case DIVI:
printf_DIV(p);
break;
case GOTO:
printf_GOTO(p);
break;
case LAB:
printf_LABEL(p);
break;
case RET:
printf_RETURN(p);
break;
case COND:
printf_COND(p);
break;
case DEC:
printf_DEC(p);
break;
case FUNC_I:
printf_FUNC(p);
break;
case READ:
printf_READ(p);
break;
case WRITE:
printf_WRITE(p);
break;
case ARG:
printf_ARG(p);
break;
case PARAM_I:
printf_PARAM(p);
break;
case CALL:
printf_CALL(p);
break;
case ADDR:
printf_ADD(p);
break;
default:
break;
}
if(p->code->kind!=COND)
fputs("\n",fp);
p=p->next;
}
fclose(fp);
}
InterCode new_interCode(int kind){//init a new interCode
InterCode code = (InterCode)malloc(sizeof(InterCode_));
code->kind = kind;
/*if(kind == 0){//assignop
code->assign = (assign *)malloc(sizeof(assign));
}
else{
code->binop = (binop *)malloc(sizeof(binop));
}*/
return code;
}
Operand new_operand(int kind,int value){//init a new operand
Operand op = (Operand)malloc(sizeof(Operand_));
op->kind = kind;
op->is_min = 0;
if(kind == 1)//constant
op->value = value;
else if(kind == 8)
;
else
op->label_no = value;
return op;
}
Operand new_operand_name(char* name){
Operand op = (Operand)malloc(sizeof(Operand_));
op->kind = 0;//var
op->is_min = 0;
strcpy(op->name,name);
return op;
}
Operand new_label(){
Operand op = new_operand(4,label_num);
label_num++;
return op;
}
Operand new_temp(){
Operand op = (Operand)malloc(sizeof(Operand_));
op->kind = 3;
op->is_min = 0;
op->var_no = var_no;
var_no++;
return op;
}
InterCodes translate_Exp(node* exp,Operand place){
//-------------------------------------------------Exp ASSIGNOP Exp
if(exp->exp_type == 7){
Operand t = new_temp();
InterCodes codes1 ;
codes1 = translate_Exp(exp->child->brother->brother,t);
if(strcmp(exp->child->child->name,"ID")==0){
InterCodes codes2 = InterCodes_init();
codes2->code = new_interCode(0);
codes2->code->assign.left = new_operand_name(exp->child->child->node_value);
codes2->code->assign.right = t;
InterCodes_link(codes1,codes2);
/*if(place != NULL){
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(0);
codes3->code->assign.left = place;
codes3->code->assign.right = codes2->code->assign.left;
InterCodes_link(codes1,codes3);
}*/
}
else{
Operand t2 =new_temp();
InterCodes codes2 = translate_Exp(exp->child,t2);
if(place != NULL){
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(0);
codes3->code->assign.left = place;
codes3->code->assign.right = t2;
InterCodes_link(codes1,codes3);
}
}
return codes1;
}
//-------------------------------------------------Exp AND Exp
else if(exp->exp_type == 8){
Operand label1 = new_label();
Operand label2 = new_label();
InterCodes codes1 = InterCodes_init();
codes1->code = new_interCode(0);
codes1->code->assign.left = place;
codes1->code->assign.right = new_operand(1,0);
InterCodes codes2 = translate_Cond(exp, label1, label2);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(5);
codes3->code->onlyop.op = label1;
InterCodes codes4 = InterCodes_init();
codes4->code = new_interCode(0);
codes4->code->assign.left = place;
codes4->code->assign.right = new_operand(1,1);
InterCodes codes5 = InterCodes_init();
codes5->code = new_interCode(LAB);
codes5->code->onlyop.op = label2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
InterCodes_link(codes1,codes5);
return codes1;
}
//-------------------------------------------------Exp OR Exp
else if(exp->exp_type == 9){
Operand label1 = new_label();
Operand label2 = new_label();
InterCodes codes1 = InterCodes_init();
codes1->code = new_interCode(0);
codes1->code->assign.left = place;
codes1->code->assign.right = new_operand(1,0);
InterCodes codes2 = translate_Cond(exp, label1, label2);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(5);
codes3->code->onlyop.op = label1;
InterCodes codes4 = InterCodes_init();
codes4->code = new_interCode(0);
codes4->code->assign.left = place;
codes4->code->assign.right = new_operand(1,1);
InterCodes codes5 = InterCodes_init();
codes5->code = new_interCode(LAB);
codes5->code->onlyop.op = label2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
InterCodes_link(codes1,codes5);
return codes1;
}
//-------------------------------------------------Exp RELOP Exp
else if(exp->exp_type == 10){
Operand label1 = new_label();
Operand label2 = new_label();
InterCodes codes1 = InterCodes_init();
codes1->code = new_interCode(0);
codes1->code->assign.left = place;
codes1->code->assign.right = new_operand(1,0);
InterCodes codes2 = translate_Cond(exp, label1, label2);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(5);
codes3->code->onlyop.op = label1;
InterCodes codes4 = InterCodes_init();
codes4->code = new_interCode(0);
codes4->code->assign.left = place;
codes4->code->assign.right = new_operand(1,1);
InterCodes codes5 = InterCodes_init();
codes5->code = new_interCode(LAB);
codes5->code->onlyop.op = label2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
InterCodes_link(codes1,codes5);
return codes1;
}
//-------------------------------------------------Exp PLUS Exp
else if(exp->exp_type == 11){
Operand t1 = new_temp();
Operand t2 = new_temp();
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
InterCodes codes3 = InterCodes_init();
codes1 = translate_Exp(exp->child->brother->brother,t1);
codes2 = translate_Exp(exp->child,t2);
codes3->code = new_interCode(1);//plus
codes3->code->binop.result = place;
codes3->code->binop.op1 = t1;
codes3->code->binop.op2 = t2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes2,codes3);
return codes1;
}
//-------------------------------------------------Exp MINUS Exp
else if(exp->exp_type == 12){
Operand t1 = new_temp();
Operand t2 = new_temp();
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
InterCodes codes3 = InterCodes_init();
codes1 = translate_Exp(exp->child->brother->brother,t1);
codes2 = translate_Exp(exp->child,t2);
codes3->code = new_interCode(2);//sub
codes3->code->binop.result = place;
codes3->code->binop.op1 = t2;
codes3->code->binop.op2 = t1;
InterCodes_link(codes1,codes2);
InterCodes_link(codes2,codes3);
return codes1;
}
//--------------------------------------------------Exp STAR Exp
else if(exp->exp_type == 13){
Operand t1 = new_temp();
Operand t2 = new_temp();
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
InterCodes codes3 = InterCodes_init();
codes1 = translate_Exp(exp->child->brother->brother,t1);
codes2 = translate_Exp(exp->child,t2);
codes3->code = new_interCode(3);//star
codes3->code->binop.result = place;
codes3->code->binop.op1 = t1;
codes3->code->binop.op2 = t2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes2,codes3);
return codes1;
}
//--------------------------------------------------Exp DIV Exp
else if(exp->exp_type == 14){
Operand t1 = new_temp();
Operand t2 = new_temp();
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
InterCodes codes3 = InterCodes_init();
codes1 = translate_Exp(exp->child->brother->brother,t1);
codes2 = translate_Exp(exp->child,t2);
codes3->code = new_interCode(4);//div
codes3->code->binop.result = place;
codes3->code->binop.op1 = t1;
codes3->code->binop.op2 = t2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes2,codes3);
return codes1;
}
//--------------------------------------------------LP Exp RP
else if(exp->exp_type == 15){
return translate_Exp(exp->child->brother,place);
}
//--------------------------------------------------MINUS Exp
else if(exp->exp_type == 16){
Operand t1 = new_temp();
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
codes1 = translate_Exp(exp->child->brother,t1);
codes2->code = new_interCode(SUB);
codes2->code->binop.result = place;
t1->is_min = 1;
codes2->code->binop.op1 = new_operand(1,0);
codes2->code->binop.op2 = t1;
InterCodes_link(codes1,codes2);
return codes1;
}
//---------------------------------------------------NOT Exp
else if(exp->exp_type == 17){
Operand label1 = new_label();
Operand label2 = new_label();
InterCodes codes1 = InterCodes_init();
codes1->code = new_interCode(0);
codes1->code->assign.left = place;
codes1->code->assign.right = new_operand(1,0);
InterCodes codes2 = translate_Cond(exp, label1, label2);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(5);
codes3->code->onlyop.op = label1;
InterCodes codes4 = InterCodes_init();
codes4->code = new_interCode(0);
codes4->code->assign.left = place;
codes4->code->assign.right = new_operand(1,1);
InterCodes codes5 = InterCodes_init();
codes5->code = new_interCode(LAB);
codes5->code->onlyop.op = label2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
InterCodes_link(codes1,codes5);
return codes1;
}
//---------------------------------------------------ID LP Args RP
else if(exp->exp_type == 18){
Operand* arg_list = (Operand*)malloc(sizeof(Operand)*8);
int arg_num = 0;
InterCodes codes1 = translate_Args(exp->child->brother->brother,arg_list,&arg_num);
if (strcmp(exp->child->node_value,"write")==0){
InterCodes codes2 = InterCodes_init();
codes2->code = new_interCode(WRITE);
codes2->code->onlyop.op = arg_list[0];
InterCodes_link(codes1,codes2);
return codes1;
}
int i = 0;
for(;i < arg_num;i++){
InterCodes codes2 = InterCodes_init();
codes2->code = new_interCode(ARG);//codes2->code->kind = REFERENCE; ////////////////////////////////
codes2->code->onlyop.op = arg_list[i];
InterCodes_link(codes1,codes2);
}
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(CALL);
codes3->code->assign.left = place;
codes3->code->assign.right = new_operand_name(exp->child->node_value);
InterCodes_link(codes1,codes3);
return codes1;
}
//---------------------------------------------------ID LP RP
else if(exp->exp_type == 19){
InterCodes codes = InterCodes_init();
if(strcmp(exp->child->node_value,"read")==0){
codes->code = new_interCode(READ);
codes->code->onlyop.op = place;
}
/*else if(strcmp(exp->child->name,"write")==0){
InterCodes codes = InterCodes_init();
codes->code = new_interCode(READ);
codes->code->onlyop.op = place;
}*/
else{
codes->code = new_interCode(CALL);
codes->code->assign.left = place;
codes->code->assign.right = new_operand_name(exp->child->name);
}
return codes;
}
//--------------------------------------------------Exp LB Exp RB
else if(exp->exp_type == 20){
return translate_Array(exp,place);
}
//--------------------------------------------------Exp DOT ID
else if(exp->exp_type == 21){
return translate_Struct(exp,place);
}
//---------------------------------------------------ID
else if(exp->exp_type == 22){
InterCodes codes = InterCodes_init();
codes->code = new_interCode(0);
codes->code->assign.right = new_operand_name(exp->node_value);
codes->code->assign.left = place;
return codes;
}
//--------------------------------------------------INT
else if(exp->exp_type == 23){
InterCodes codes = InterCodes_init();
codes->code = new_interCode(0);
codes->code->assign.right = new_operand(1,exp->node_int);
codes->code->assign.left = place;
return codes;
}
//--------------------------------------------------FLOAT
else if(exp->exp_type == 24){
}
}
InterCodes translate_Cond(node* exp,Operand true_place,Operand false_place){
if(strcmp(exp->child->name,"NOT")==0){
return translate_Cond(exp->child->brother,true_place,false_place);
}
else if(strcmp(exp->child->brother->name,"RELOP")==0){
Operand t1 = new_temp();
Operand t2 = new_temp();
InterCodes codes1 = translate_Exp(exp->child,t1);
InterCodes codes2 = translate_Exp(exp->child->brother->brother,t2);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(COND);
codes3->code->cond.op1 = t1;
codes3->code->cond.op2 = t2;
codes3->code->cond.op = new_operand(op,0);
strcpy(codes3->code->cond.op->op,exp->child->brother->node_value);
InterCodes codes4 = InterCodes_init();
codes4->code = new_interCode(GOTO);
codes4->code->onlyop.op = true_place;
InterCodes codes5 = InterCodes_init();
codes5->code = new_interCode(GOTO);
codes5->code->onlyop.op = false_place;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
InterCodes_link(codes1,codes5);
return codes1;
}
else if(strcmp(exp->child->brother->name,"AND")==0){
Operand label1 = new_label();
InterCodes codes1 = translate_Cond(exp->child, label1, false_place);
InterCodes codes2 = translate_Cond(exp->child->brother->brother, true_place, false_place);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(LAB);
codes3->code->onlyop.op = label1;
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes2);
return codes1;
}
else if(strcmp(exp->child->brother->name,"OR")==0){
Operand label1 = new_label();
InterCodes codes1 = translate_Cond(exp->child, true_place, label1);
InterCodes codes2 = translate_Cond(exp->child->brother->brother, true_place, false_place);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(LAB);
codes3->code->onlyop.op = label1;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
return codes1;
}
else{
/*Operand t1 = new_temp()
InterCodes codes1 = translate_Exp(Exp, sym_table, t1)
code2 = [IF t1 != #0 GOTO label_true]
return code1 + code2 + [GOTO label_false]
*/
}
}
InterCodes translate_Dec(node* dec){
/*
* Dec
* | VarDec
* | VarDec ASSIGNOP Exp
*/
if(dec->child->brother != NULL){
Operand t1 = new_temp();
InterCodes codes1 = translate_Exp(dec->child->brother->brother, t1);
InterCodes codes2 = translate_VarDec(dec->child);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(0);
codes3->code->assign.left = new_operand_name(dec->child->node_value);
codes3->code->assign.right = t1;
if(codes1 == NULL){
codes1 = codes2;
}
else{
InterCodes_link(codes1,codes2);
}
InterCodes_link(codes1,codes3);
return codes1;
}
else if(dec->child->brother == NULL){
return translate_VarDec(dec->child);
}
return NULL;
}
InterCodes translate_Declist(node* declist){
InterCodes codes1 = InterCodes_init();
codes1 = translate_Dec(declist->child);
if(declist->child->brother == NULL){
return codes1;
}
else{
InterCodes codes2 = InterCodes_init();
codes1 = translate_Dec(declist->child);
codes2 = translate_Declist(declist->child->brother->brother);
InterCodes_link(codes1, codes2);
return codes1;
}
}
InterCodes translate_Def(node* deflist){
assert(deflist != NULL);
if(deflist->child != NULL)
return translate_Declist(deflist->child->brother);
else
return NULL;
}
InterCodes translate_Deflist(node* deflist){
if(deflist != NULL && deflist->child != NULL){
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
codes1 = translate_Def(deflist->child);
codes2 = translate_Deflist(deflist->child->brother);
InterCodes_link(codes1,codes2);
return codes1;
}
else
return NULL;
}
InterCodes translate_Extdef(node* ExtDef) {
InterCodes code1, code2;
//Specifier ExtDecList SEMI
if(strcmp(ExtDef->child->brother->name, "ExtDecList") == 0){
return translate_Extdeclist(ExtDef->child->brother);
}
//Specifier FunDec CompSt
else if(strcmp(ExtDef->child->brother->name, "FunDec") == 0){
code1 = translate_Fundec(ExtDef->child->brother);
code2 = translate_Compst(ExtDef->child->brother->brother);
if(code1 == NULL){
code1 = code2;
}
else
InterCodes_link(code1, code2);
return code1;
}
//Specifier SEMI
else
return NULL;
}
InterCodes translate_Extdeclist(node* Extdeclist) {
InterCodes code1, code2;
if(Extdeclist->child->brother == NULL){ //VarDec
return translate_VarDec(Extdeclist->child);
}
else if(Extdeclist->child->brother != NULL && strcmp(Extdeclist->child->brother->node_value, "COMMA") == 0){ //VarDec COMMA ExtDecList
code1 = translate_VarDec(Extdeclist->child);
code2 = translate_Extdeclist(Extdeclist->child->brother->brother);
if(code1 == NULL){
code1 = code2;
}
else
InterCodes_link(code1, code2);
return code1;
}
else
return NULL;
}
InterCodes translate_Compst(node* CompSt){
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
codes1 = translate_Deflist(CompSt->child->brother);
codes2 = translate_Stmtlist(CompSt->child->brother->brother);
if(codes1 == NULL){
codes1 = codes2;
}
else
InterCodes_link(codes1, codes2);
return codes1;
}
InterCodes translate_Stmt(node* Stmt){
if(strcmp(Stmt->child->name,"Exp") == 0){
Operand t = new_temp();
return translate_Exp(Stmt->child,t);
}
else if(strcmp(Stmt->child->name,"CompSt") == 0){
return translate_Compst(Stmt->child);
}
else if(strcmp(Stmt->child->name,"RETURN") == 0){
Operand t1 = new_temp();
InterCodes codes1 = translate_Exp(Stmt->child->brother,t1);
InterCodes codes2 = InterCodes_init();
codes2->code = new_interCode(RET);
codes2->code->onlyop.op = t1;
InterCodes_link(codes1,codes2);
return codes1;
}
else if(strcmp(Stmt->child->name,"WHILE") == 0){
Operand label1 = new_label();
Operand label2 = new_label();
Operand label3 = new_label();
InterCodes codes1 = InterCodes_init();
codes1->code = new_interCode(LAB);
codes1->code->onlyop.op = label1;
InterCodes codes2 = translate_Cond(Stmt->child->brother->brother, label2, label3);
InterCodes codes3 = InterCodes_init();
codes3->code = new_interCode(LAB);
codes3->code->onlyop.op = label2;
InterCodes codes4 = translate_Stmt(Stmt->child->brother->brother->brother->brother);
InterCodes codes5 = InterCodes_init();
codes5->code = new_interCode(GOTO);
codes5->code->onlyop.op = label1;
InterCodes codes6 = InterCodes_init();
codes6->code = new_interCode(LAB);
codes6->code->onlyop.op = label3;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
InterCodes_link(codes1,codes5);
InterCodes_link(codes1,codes6);
return codes1;
}
//IF LP Exp RP Stmt1
else if(Stmt->child->brother->brother->brother->brother->brother == NULL){
Operand label1 = new_label();
Operand label2 = new_label();
InterCodes codes1 = translate_Cond(Stmt->child->brother->brother, label1, label2);
InterCodes codes2 = InterCodes_init();
codes2->code = new_interCode(LAB);
codes2->code->onlyop.op = label1;
InterCodes codes3 = translate_Stmt(Stmt->child->brother->brother->brother->brother);
InterCodes codes4 = InterCodes_init();
codes4->code = new_interCode(LAB);
codes4->code->onlyop.op = label2;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
return codes1;
}
//IF LP Exp RP Stmt1 ELSE Stmt2
else{
Operand label1 = new_label();
Operand label2 = new_label();
Operand label3 = new_label();
InterCodes codes1 = translate_Cond(Stmt->child->brother->brother, label1, label2);
InterCodes codes2 = InterCodes_init();
codes2->code = new_interCode(LAB);
codes2->code->onlyop.op = label1;
InterCodes codes3 = translate_Stmt(Stmt->child->brother->brother->brother->brother);
InterCodes codes4 = InterCodes_init();
codes4->code = new_interCode(GOTO);
codes4->code->onlyop.op = label3;
InterCodes codes5 = InterCodes_init();
codes5->code = new_interCode(LAB);
codes5->code->onlyop.op = label2;
InterCodes codes6 = translate_Stmt(Stmt->child->brother->brother->brother->brother->brother->brother);
InterCodes codes7 = InterCodes_init();
codes7->code = new_interCode(LAB);
codes7->code->onlyop.op = label3;
InterCodes_link(codes1,codes2);
InterCodes_link(codes1,codes3);
InterCodes_link(codes1,codes4);
InterCodes_link(codes1,codes5);
InterCodes_link(codes1,codes6);
InterCodes_link(codes1,codes7);
return codes1;
}
//else if(Stmt->child->brother-)
}
InterCodes translate_Stmtlist(node* Stmtlist){
if(Stmtlist != NULL && Stmtlist->child != NULL){
InterCodes codes1 = InterCodes_init();
InterCodes codes2 = InterCodes_init();
codes1 = translate_Stmt(Stmtlist->child);
codes2 = translate_Stmtlist(Stmtlist->child->brother);
if(codes1 == NULL){
codes1 = codes2;
}
else
InterCodes_link(codes1,codes2);
return codes1;
}
else
return NULL;
}
InterCodes translate_VarDec(node* VarDec){
InterCodes code1 = InterCodes_init();
if(strcmp(VarDec->child->name, "ID") == 0){ //ID
FieldList p = Findname(VarDec->child->node_value);
if(p->type->kind == Int || p->type->kind == Float){
return NULL;
}
else if(p->type->kind == ARRAY || p->type->kind == STRUCTVAR ){
int size = getSize(p);
code1->code = new_interCode(DEC);
code1->code->assign.left = new_operand_name(VarDec->child->node_value);
code1->code->assign.right = new_operand(1,size);
}
return code1;
}