Parle\Parser::trace
(PECL parle >= 0.5.1)
Parle\Parser::trace — Trace the parser operation
说明
public Parle\Parser::trace(): string
Retrieve the current parser operation description. This can be especially useful for studying the parser and to optimize the grammar.
参数
此函数没有参数。
返回值
Returns a string with the trace information.
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