if ( codement )
{
...
}
else
{
...
}
现在加入了新的语法分析程序.可以识别一下语句:
1
function test(a)
2
{
3
4if ( a<0 )
5print "a<0:"+a
6else if ( a > 1 )
7
8print "a>1"
9
10else if ( a<10)
11print "a<10:"+a
12else if(a >10)
13
14print "a>10:"+a
15
16else
17
18print "a<1"
19
20
21
}
22
23
24
25
26
上面的语句跟以下语句等价:function test(a)2
{
3
4
if ( a<0 )5
print "a<0:"+a6
else if ( a > 1 )7
8
print "a>1"9
10
else if ( a<10)11
print "a<10:"+a12
else if(a >10)13
14
print "a>10:"+a15
16
else17
18
print "a<1"19
20
21
}22
23
24
25
26
1function test(a)
2{
3 if ( a< 0 )
4print "a<0:"+a
5else
6
{
7 if ( a>1 )
8print "a>1"
9else
10{
11 if ( a<10 )
12print "a<10:"+a
13else
14{
15 if ( a> 10 )
16{
17print "a>10:"+a
18
}
19else
20{
21print "a<1"
22}
23}
24
25}
26
27}
28}
29
Switch语句还没有实现,可能不需要实现了吧
function test(a)2
{3
if ( a< 0 )4
print "a<0:"+a5
else 6
{
7
if ( a>1 )8
print "a>1"9
else10
{11
if ( a<10 )12
print "a<10:"+a13
else14
{15
if ( a> 10 )16
{17
print "a>10:"+a18
}19
else20
{21
print "a<1"22
}23
}24
25
}26
27
}28
}29