void doExtDefList(TreeNode *p) {
//printf("doExtDefList\n");
//printf("TreeNode->state:%s\n", p->state);
//printf("TreeNode->productionRule: %d\n", p->productionRule);
switch (p->productionRule) {
case 1:{
TreeNode *p1 = p->firstChild;
TreeNode *p2 = p1->rightBrother;
doExtDef(p1);
doExtDefList(p2);
break;
}
case 2:
break;
}
}
void doProgram(TreeNode *p) {
//printf("---doProgram---\n");
//printf("root->state:%s\n", p->state);
out_fp = fopen("out.s", "w");
if(out_fp == NULL)
perror("error in creating out.s\n");
fprintf(out_fp,".data\n");
fprintf(out_fp,"_prompt: .asciiz \"Enter an integer:\"\n");
fprintf(out_fp,"_ret: .asciiz \"\\n\"\n");
fprintf(out_fp,".globl main\n");
fprintf(out_fp,".text\n");
fprintf(out_fp,"read:\n");
fprintf(out_fp,"\tli $v0,4\n");
fprintf(out_fp,"\tla $a0,_prompt\n");
fprintf(out_fp,"\tsyscall\n");
fprintf(out_fp,"\tli $v0,5\n");
fprintf(out_fp,"\tsyscall\n");
fprintf(out_fp,"\tjr $ra\n");
fprintf(out_fp,"\n");
fprintf(out_fp,"write:\n");
fprintf(out_fp,"\tli $v0,1\n");
fprintf(out_fp,"\tsyscall\n");
fprintf(out_fp,"\tli $v0,4\n");
fprintf(out_fp,"\tla $a0,_ret\n");
fprintf(out_fp,"\tsyscall\n");
fprintf(out_fp,"\tmove $v0,$0\n");
fprintf(out_fp,"\tjr $ra\n");
fprintf(out_fp,"\n");
fprintf(out_fp,"main:\n");
TreeNode *p1 = p->firstChild;
doExtDefList(p1);
fprintf(out_fp,"\tmove $v0, $0\n");
fprintf(out_fp,"\tjr $ra\n");//手动添加return 0，后续要进行修改
fclose(out_fp);
if(!OUT)
remove("out.s");
else
printf("Create out.s successfully\n");
}
void doProgram(TreeNode *p) {
//printf("---doProgram---\n");
//printf("root->state:%s\n", p->state);
TreeNode *p1 = p->firstChild;
doExtDefList(p1);
}
