ANTLR 如何执行字符操作？

Question

Closed. This question is seeking recommendations for software libraries, tutorials, tools, books, or other off-site resources. It does not meet Stack Overflow guidelines. It is not currently accepting answers.

---

我们不允许提出寻求软件库、教程、工具、书籍或其他场外资源推荐的问题。您可以编辑问题，以便用事实和引文来回答。

6 年前已关闭。

Answer 1

来自 ANTLR wiki：

---

ANTLR 符号

另请参阅语法 和 动作中的特殊符号。

Symbol          | Description
----------------+--------------------------------------------------------
$               | Attribute
@               | Action
::              | action or dynamically-scoped attribute scope specifier
:               | rule definition
;               | end rule
|               | alternative
's'             | char or string literal
.               | wildcard
=               | label assignment
+=              | list label assignment
[..]            | argument or return value spec
{...}           | action
...             | forced action; execute even while backtracking
(...)           | subrule
+               | 1 or more
*               | 0 or more
?               | optional or semantic predicate
~               | match not
!               | don't include in AST
^               | make AST root node
=>              | always execute predicate
->              | rewrite rule
<token options> | token option spec like ID<node=VarNode>
^(...)          | tree grammar or rewrite element
// ...          | single-line comment
/* ... */       | multi-line comment