class xf::data_analytics::text::re::reConfig¶

#include "reEngine_config.hpp"

Overview¶

Pre-compiling the regular expression and generating configurations under the requirement of reEngineKernel if the pattern is valid.

// fields

std::string pattern

std::string pattern

Regular expression pattern.

reConfig (
    const uint32_t instr_depth,
    const uint32_t char_class_num,
    const uint32_t capture_grp_num
    )

Allocates buffers for configurations and bit-set map, and initializes number of instructions/character-classes/capturing-groups.

Parameters:

instr_depth	max number of instructions.
char_class_num	max number of character classes.
capture_grp_num	max number of capturing groups.

ErrCode compile (std::string pattern)

Pre-compiles pattern and gives error code correspondingly.

Parameters:

pattern

Input regular expression

const uint64_t* getConfigBits ()

Prepares configurations under the requirement of L2 reEngineKernel

uint32_t getCpgpNm () const

Gets the number of capturing groups for current pattern.