int find_int(char *str)
{
while(*str!='\0')
{
if(is_digtial(*str)) break;
str++;
}
return str2int(str);
}
int str2int(const char *str)
{
int ret=0;
while((*str)!='\0' )
{
if(!is_digtial(*str)) return ret;
ret=ret*10+*str-'0';
str++;
}
return ret;
}
void Scanner()
{
int word_pos, num_value, max_word_len;
char word[100], word_temp[100], input[MAXLEN];
char *p;
InitList();
while( fgets(input,100,fpIn) )
{
readRow++;
strcpy( word, input );
p = word;
while( *p != '\n' )
{
word_pos = 0;
while( *p == ' ' || *p == 9 )
p++;
if( *p == '\n' )// bug test file : while( a < 10 {
break;
if( isalpha(*p) || *p == '_' )
{
CLR(word_temp);
max_word_len = 0;
while( isalpha(*p) || is_digtial(*p) || *p == '_' )
{
word_temp[word_pos++] = *p;
p++ , max_word_len++;
}
if( max_word_len >= 20 )
{
fprintf( fpOut, "word's max len error");
exit(0);
}
word_temp[word_pos] = '\0';
if( *(p) == '[' )
{
InsertList( SYN_ARRAY, word_temp );
}
else
InsertList( IsKeyword(word_temp), word_temp );
}
else if( *p >= '0' && *p <= '9' )
{
CLR(word_temp);
num_value = 0;
while( (*p>='0' && *p<='9') )
{
num_value = num_value * 10 + *p-'0';
p++;
}
if( isalpha(*p) )
{
fprintf( fpOut, "word wrong can't not begin with number" );
exit(0);
return ;
}
if( num_value >= 32767 )
{
fprintf( fpOut, "int too big" );
exit(0);
return ;
}
else
{
itoa(num_value,word_temp,10);
InsertList( SYN_NUM, word_temp );
}
}
else
{
switch( *p )
{
case '=':
if( *(p+1) == '=' )
{
InsertList( SYN_EQ, "==" );
p++;
}
else
InsertList( SYN_ASSIGN, "=" );
break;
case '+':
InsertList( SYN_PLUS, "+" );
break;
case '-':
InsertList( SYN_MINUS, "-" );
break;
case '*':
InsertList( SYN_MUL, "*" );
break;
case '/':
InsertList( SYN_DIV, "/" );
break;
case '<':
if( *(p+1) == '=' )
{
InsertList( SYN_LE, "<=" );
p++;
}
else
InsertList( SYN_LT, "<" );
break;
case '>':
if( *(p+1) == '=' )
{
InsertList( SYN_ME, ">=" );
p++;
}
else
InsertList( SYN_LG, ">" );
break;
case '!':
InsertList( SYN_NE, "!=" );
break;
case ',':
InsertList( SYN_COMMA, "," );
break;
case ':':
InsertList( SYN_COLON, ":" );
break;
case ';':
InsertList( SYN_SEMICOLON, ";" );
break;
case '(':
InsertList( SYN_LPAREN, "(" );
break;
case ')':
InsertList( SYN_RPAREN, ")" );
break;
case '{':
InsertList( SYN_LEFTBRACKET2, "{" );
break;
case '}':
InsertList( SYN_RIGHTBRACKET2, "}" );
break;
case '[':
InsertList( SYN_LEFTBRACKET1, "[" );
break;
case ']':
InsertList( SYN_RIGHTBRACKET1, "]" );
break;
default:
return ;
break;
}
p++;
}
}
}
}
