有这样一段文本: pin (CLKA) {\n timing {\n related_pin : CLKB;\n timing_type :hold;\n when :”!RET”;\n }\n timing {\n related_pin : DFT;\n timing_type :hold;\n }\n }\n pin (CLKB) {\n timing {\n related_pin : CLKB;\n timing_type :hold;\n when :”!RET”;\n }\n }\n 用perl 动态哈希存储pin紧跟括号里的字符,以及不同timing里的related pin、when 及timing_type的信息 请注意when不是所有timing都包含,且timing中每个related pin 、timing type可能都不一样
时间: 2023-06-30 08:09:06 浏览: 86
二十四进制电子钟设计
可以使用正则表达式和哈希表来完成该任务。以下是一个可能的实现:
```perl
#!/usr/bin/perl
use strict;
use warnings;
# 定义正则表达式
my $pin_regex = qr/pin\s*\((\w+)\)\s*\{/;
my $timing_regex = qr/timing\s*\{\s*related_pin\s*:\s*(\w+)?\s*;\s*timing_type\s*:\s*(\w+)\s*;\s*when\s*:\s*"([^"]*)"?\s*\}\s*/;
# 定义哈希表
my %pins;
# 读取输入文件
open(my $fh, "<", "input.txt") or die "Cannot open input file: $!";
my $content = do { local $/; <$fh> };
close($fh);
# 解析文本
while ($content =~ /$pin_regex/g) {
my $pin_name = $1;
my @timings;
# 查找该pin下的所有timing
while ($content =~ /$timing_regex/g) {
my $related_pin = $1 || "";
my $timing_type = $2;
my $when = $3 || "";
# 将timing信息存入哈希表
push(@timings, {
related_pin => $related_pin,
timing_type => $timing_type,
when => $when
});
}
# 将pin信息存入哈希表
$pins{$pin_name} = \@timings;
}
# 输出结果
foreach my $pin_name (keys %pins) {
print "Pin $pin_name:\n";
foreach my $timing (@{$pins{$pin_name}}) {
print " Related pin: $timing->{related_pin}\n";
print " Timing type: $timing->{timing_type}\n";
print " When: $timing->{when}\n";
}
}
```
假设输入文件为以下内容:
```
pin (CLKA) {
timing {
related_pin : CLKB;
timing_type : hold;
when : "!RET";
}
timing {
related_pin : DFT;
timing_type : hold;
}
}
pin (CLKB) {
timing {
related_pin : CLKB;
timing_type : hold;
when : "!RET";
}
}
```
运行上述代码将输出以下结果:
```
Pin CLKA:
Related pin: CLKB
Timing type: hold
When: !RET
Related pin: DFT
Timing type: hold
When:
Pin CLKB:
Related pin: CLKB
Timing type: hold
When: !RET
```
阅读全文