java - JParsec - Scanner.string() equivalent for tokens

Question

I have a parser for language that looks like this:

[nodeType OPTIONAL STUFF]

There are a few node typed, such as "ask" and "set", so currently ask and set are defined as keywords. This causes problems in other parts of the parser.

Is there a way to define a token parser that accepts only tokens who contain specific text?

Answer 1

是的。您可以查看Terminals类，教程中也对此进行了说明。

实际上，jparsec 结合了传统上在 lex 和 yacc 中分离的两个解析过程：词法分析阶段（例如Terminals）解析 aString并返回Tokens 流，句法分析（其他Parser实例）解析Tokens 流并解释它们，通常直接构建 AST 或嵌入语义。