void ISend::msg_handler(unsigned char *dat, unsigned char len)
{
unsigned char ret;
// ret = strncmp((char *)&item[1], (const char *)&dat[4], item_len-1);
ret = compare_keyword(dat);
if (ret == 0) {
if (getStatus() == S_S) {
setStatus(S_A);
/*返回结果,打出来*/
/*处理所有接收回来的应答码*/
clearAckData();
strncpy((char *)strAck, (const char *)&dat[4+item_len], len-4-item_len);
strAckLen = len -4-item_len;
onReceive(dat, len);
}
}
}
token LRParsing::lexicalAnalizer(){
char readchar;
int state=0;//0=start
char readbuf[100];
token ret_tok={"","",0,0,0,0};
int buf_index=0;
double num;
int multifier;
int num_index=0;
//readAll.AppendChar(' ');
if(read_type == 1)
readAll.AppendChar(EOF);
do{
//readchar = fgetc(fp);
if(read_type == 1){
readchar = readAll.GetAt(*index);
(*index)++;
} else if(read_type ==0){
readchar = fgetc(read_fp);
}
if(readchar == EOF && state==0){
ret_tok.tokenName="EOF";
strcpy_s(ret_tok.strbuf,"\0");
ret_tok.tokenType=44;
return ret_tok;
}
readbuf[buf_index++]=readchar;
readbuf[buf_index]='\0';
switch(state){
case 0:
if((readchar>='a' && readchar<='z') || (readchar>='A' && readchar<='Z') || readchar=='_') state=1;
else if(readchar == '>') state=5;
else if(readchar == '<') state=6;
else if(readchar == '=') state=7;
else if(readchar == '!') state=8;
else if(readchar == '&') state=9;
else if(readchar == '|') state=10;
else if(readchar == '+') state=30;
else if(readchar == '-') state=31;
else if(readchar == '*') {ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=5; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '/') state=32;
else if(readchar == '%') {ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=7; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '.') {ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=11; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == ',') {ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=12; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '(') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=16; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == ')') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=17; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '{') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=18; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '}') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=19; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '[') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=20; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == ']') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=21; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '\\') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=22; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == ':') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=23; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == ';') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=24; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '"') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=25; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '\'') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=26; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar == '#') {ret_tok.tokenName="METADATA"; ret_tok.tokenType=27; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar>='0' && readchar<='9') {state=70; num=readchar-48;}
else if(readchar=='\n') { strcpy_s(readbuf,""); buf_index=0; state=0;}
else if(readchar=='\t') {strcpy_s(readbuf,""); buf_index=0; state=0;}
else if(readchar==' ') {strcpy_s(readbuf,""); buf_index=0; state=0;}
else state=ERROR;
break;
case 1:
if((readchar>='a' && readchar<='z') || (readchar>='A' && readchar<='Z') || readchar=='_' || (readchar>='0' && readchar<='9')) state=1;
else {
ret_back(index, readbuf, buf_index);
ret_tok.tokenType= compare_keyword(readbuf);
if(ret_tok.tokenType!=-1){
ret_tok.tokenName="KEYWORD";
strcpy_s(ret_tok.strbuf,readbuf);
}else{
ret_tok.tokenType=0;
strcpy_s(ret_tok.strbuf,readbuf);
ret_tok.tokenName="ID";
ret_tok.attribute=compare_symbol(readbuf);}
return ret_tok;
}
break;
case 5:
ret_tok.tokenName="ROP";
ret_tok.tokenType=2;
if(readchar=='='){ ret_tok.attribute=GE; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else{ret_back(index, readbuf, buf_index); ret_tok.attribute=GT; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 6:
ret_tok.tokenName="ROP";
ret_tok.tokenType=2;
if(readchar=='='){ ret_tok.attribute=LE; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar=='>'){ ret_tok.attribute=LG; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else{ret_back(index, readbuf, buf_index); ret_tok.attribute=LT; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 7:
ret_tok.tokenName="ROP";
ret_tok.tokenType=2;
if(readchar=='='){ ret_tok.attribute=EQ; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else {ret_back(index,readbuf,buf_index); ret_tok.tokenName="="; ret_tok.tokenType=8; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 8:
ret_tok.tokenName="ROP";
ret_tok.tokenType=2;
if(readchar=='='){ ret_tok.attribute=NE; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else {ret_back(index,readbuf,buf_index); ret_tok.tokenName="!"; ret_tok.tokenType=10; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 9:
ret_tok.tokenName="ROP";
ret_tok.tokenType=2;
if(readchar=='&'){ ret_tok.attribute=AND; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else {ret_back(index,readbuf,buf_index); ret_tok.tokenName="&"; ret_tok.tokenType=13; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 10:
ret_tok.tokenName="ROP";
ret_tok.tokenType=2;
if(readchar=='|'){ ret_tok.attribute=OR; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else state=ERROR;
break;
case 30:
if(readchar=='+'){ ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=14; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else{ ret_back(index, readbuf, buf_index); ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=3; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 31:
if(readchar=='-'){ ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=15; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else if(readchar=='>'){ ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=9; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
else{ ret_back(index, readbuf, buf_index); ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=4; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 32:
if(readchar == '/') state=100;
else if(readchar == '*') state=101;
else {ret_back(index, readbuf, buf_index); ret_tok.tokenName="OPERATOR"; ret_tok.tokenType=6; strcpy_s(ret_tok.strbuf,readbuf); return ret_tok;}
break;
case 70:
if(readchar>='0' && readchar<='9') {state=70; num = num*10+(readchar-48);}
else if (readchar == '.') state=71;
else if (readchar == 'E') state=73;
else {ret_back(index, readbuf, buf_index); ret_tok.tokenName="NUM"; ret_tok.tokenType=1; strcpy_s(ret_tok.strbuf,readbuf); ret_tok.attribute=0; ret_tok.Nval0=static_cast<int>(num); return ret_tok;}
break;
case 71:
if(readchar>='0' && readchar<='9') {state=72; num_index++; num=num*10+(readchar-48);}
else state=ERROR;
break;
case 72:
if(readchar>='0' && readchar<='9') {state=72; num_index++; num=num*10+(readchar-48);}
else if(readchar == 'E') {
state=73;
for(int i=0;i<num_index; i++){
num=num/10.0;
}
}
else {
for(int i=0;i<num_index; i++){
num=num/10.0;
}
ret_back(index, readbuf, buf_index); ret_tok.tokenName="NUM"; ret_tok.tokenType=1; strcpy_s(ret_tok.strbuf,readbuf); ret_tok.attribute=1; ret_tok.Nval1=num; return ret_tok;
}
break;
case 73:
if(readchar>='0' && readchar<='9') {state=74; multifier=readchar-48;}
else if(readchar=='+' || readchar=='-') {state=74; multifier=0;}
else state=ERROR;
break;
case 74:
if(readchar>='0' && readchar<='9') {state=74; multifier=multifier*10+(readchar-48);}
else{
for(int i=0;i<multifier; i++)
num*=10;
ret_back(index, readbuf, buf_index); ret_tok.tokenName="NUM"; ret_tok.tokenType=1; strcpy_s(ret_tok.strbuf,readbuf);
if(num_index<=multifier){ret_tok.attribute=0; ret_tok.Nval0=static_cast<int>(num);}
else{ret_tok.attribute=1; ret_tok.Nval1=num;}
return ret_tok;
}
break;
case 100:
strcpy_s(readbuf,"");
buf_index=0;
if(readchar == '\n') state=0;
break;
case 101:
strcpy_s(readbuf,"");
buf_index=0;
if(readchar == '*') state=100+2;
break;
case 102:
strcpy_s(readbuf,"");
buf_index=0;
if(readchar == '/') state=0;
else state=101;
break;
case -1:
strcpy_s(readbuf,"");
buf_index=0;
if(readchar==' ' || readchar=='\t' || readchar=='\n') state=0;
break;
}
}while(readbuf[0] != EOF);
return ret_tok;
}
