Parle\Parser::trace

(PECL parle >= 0.5.1)

Parle\Parser::trace — Trace the parser operation

说明

public Parle\Parser::trace ( void ) : 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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