设计一个简单适用的语言,不能是计算器语言,使用Yacc工具和bison工具辅助实现

好的，我可以为你设计一个简单的编程语言，以下是它的基本特性：

1. 变量声明和赋值
2. 简单的条件语句和循环语句
3. 支持基本的算术运算和比较运算
4. 函数声明和调用

下面是该语言的语法规则：

program -> statement_list

statement_list -> statement | statement statement_list

statement -> var_declaration | assignment | if_statement | while_statement | function_declaration | function_call

var_declaration -> "var" IDENTIFIER ";" 

assignment -> IDENTIFIER "=" expression ";"

if_statement -> "if" "(" condition ")" "{" statement_list "}" [ "else" "{" statement_list "}" ]

while_statement -> "while" "(" condition ")" "{" statement_list "}"

function_declaration -> "function" IDENTIFIER "(" [ parameter_list ] ")" "{" statement_list "}"

parameter_list -> IDENTIFIER | IDENTIFIER "," parameter_list

function_call -> IDENTIFIER "(" [ argument_list ] ")" ";"

argument_list -> expression | expression "," argument_list

condition -> expression comparison_operator expression

comparison_operator -> "<" | ">" | "<=" | ">=" | "==" | "!="

expression -> term | expression "+" term | expression "-" term

term -> factor | term "*" factor | term "/" factor

factor -> IDENTIFIER | NUMBER | "(" expression ")"

IDENTIFIER -> [a-zA-Z]+

NUMBER -> [0-9]+

这个语言比较简单，但足够完成大部分基本的编程任务。您可以使用Yacc或Bison来实现该语言的解析器。在解析器中，您需要定义规则来处理每个语法结构，例如，当解析到变量声明时，解析器应该创建一个变量并将其存储在符号表中。当解析到赋值语句时，解析器应该查找变量并将其值更新为表达式的值。

希望这可以帮助您开始设计自己的语言！