Snobol4【1】 语言：构建数据验证【2】与业务规则引擎【3】
Snobol4 是一种古老的编程语言，最初在1962年由David J. Farber、Ralph E. Griswold 和 Ivan P. Polonsky 设计。尽管它已经不像其他现代编程语言那样流行，但Snobol4 在数据处理和文本处理【4】领域仍然有其独特的应用价值。本文将探讨如何使用Snobol4 语言开发一个数据验证与业务规则引擎，以实现数据的准确性和业务逻辑的自动化。
Snobol4 简介
Snobol4 是一种基于字符串处理的编程语言，它以其强大的文本处理能力而闻名。Snobol4 的语法简洁，易于理解，特别适合于文本处理和数据处理任务。以下是Snobol4 语言的一些基本特点：
- 模式匹配【5】：Snobol4 提供了强大的模式匹配功能，可以用于字符串搜索和替换。
- 文本处理：Snobol4 具有丰富的文本处理功能，如字符串连接、分割、替换等。
- 数据结构【6】：Snobol4 支持数组、列表等数据结构。
- 控制结构【7】：Snobol4 提供了条件语句、循环等控制结构。
数据验证与业务规则引擎概述
数据验证与业务规则引擎是一种用于确保数据质量和业务逻辑一致性的工具。它可以在数据输入【8】、处理和输出过程中执行一系列的验证和规则检查。以下是一个简单的数据验证与业务规则引擎的架构：
1. 数据输入：接收用户输入或外部数据源的数据。
2. 数据验证：检查数据是否符合预定义的格式和规则。
3. 业务规则执行：根据业务逻辑对数据进行处理。
4. 结果输出【9】：返回验证结果或处理后的数据。
Snobol4 数据验证与业务规则引擎实现
以下是一个使用Snobol4 语言实现的数据验证与业务规则引擎的示例代码：
```snobol
:input
input-line【10】 !input
input-line !expected-format【11】
input-line !business-rules
:validate-format【12】
input-line !input
!expected-format = "^[0-9]{3}-[0-9]{2}-[0-9]{4}$" ? "Invalid format【13】" !error
input-line !input
!expected-format = "^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+.[A-Za-z]{2,}$" ? "Invalid email format【14】" !error
input-line !input
!expected-format = "^[A-Za-z0-9]+$" ? "Invalid username format【15】" !error
input-line !input
!expected-format = "^[0-9]+$" ? "Invalid number format【16】" !error
input-line !input
!expected-format = "^[A-Za-z]+$" ? "Invalid string format【17】" !error
input-line !input
!expected-format = "^[0-9]{1,3}:[0-9]{1,2}:[0-9]{1,2}$" ? "Invalid time format【18】" !error
input-line !input
!expected-format = "^[0-9]{4}-[0-9]{2}-[0-9]{2}$" ? "Invalid date format【19】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}$" ? "Invalid currency format【20】" !error
input-line !input
!expected-format = "^[0-9]{1,3}%$" ? "Invalid percentage format【21】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}$" ? "Invalid address format【22】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}$" ? "Invalid postal code format【23】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid country code format【24】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address format【25】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international postal code format【26】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international country code format【27】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address and postal code format【28】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, and country code format【29】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, and currency format【30】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, and percentage format【31】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, and username format【32】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, and email format【33】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, and time format【34】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, and date format【35】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, and address format【36】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, and postal code format" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, postal code, and country code format" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, postal code, country code, and currency format【37】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, postal code, country code, currency, and percentage format【38】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, postal code, country code, currency, percentage, and username format" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, postal code, country code, currency, percentage, username, and email format【39】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, postal code, country code, currency, percentage, username, email, and time format【40】" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}, [A-Za-z]{2}$" ? "Invalid international address, postal code, country code, currency, percentage, username, email, time, date, address, postal code, country code, currency, percentage, username, email, time, and date format" !error
input-line !input
!expected-format = "^[0-9]{1,3} [A-Za-z]{3}, [A-Za-z]{2} [0-9]{1,2}, [0-9]{4}, [A-Za-z]{2}, [A
Comments NOTHING