The Parle\RLexer class

(PECL parle >= 0.5.1)

簡(jiǎn)介

Multistate lexer class. Lexemes can be defined on the fly. If the particular lexer instance is meant to be used with Parle\RParser, the token IDs need to be taken from there. Otherwise, arbitrary token IDs can be supplied. Note, that Parle\Parser is not compatible with this lexer.

類(lèi)摘要

class Parle\RLexer {

/* Constants */

const int ICASE = 1;

const int DOT_NOT_LF = 2;

const int DOT_NOT_CRLF = 4;

const int SKIP_WS = 8;

const int MATCH_ZERO_LEN = 16;

/* 屬性 */

public bool $bol = false;

public int $flags = 0;

public int $state = 0;

public int $marker = 0;

public int $cursor = 0;

/* 方法 */

public advance(): void

public build(): void

public callout(int $id, callable $callback): void

public consume(string $data): void

public dump(): void

public getToken(): Parle\Token

public insertMacro(string $name, string $regex): void

public push(string $regex, int $id): void

public push(
    string $state,
    string $regex,
    int $id,
    string $newState
): void

public push(string $state, string $regex, string $newState): void

public pushState(string $state): int

public reset(int $pos): void

}

預定義常量

Parle\RLexer::ICASE
Parle\RLexer::DOT_NOT_LF
Parle\RLexer::DOT_NOT_CRLF
Parle\RLexer::SKIP_WS
Parle\RLexer::MATCH_ZERO_LEN

屬性

bol: Start of input flag.
flags: Lexer flags.
state: Current lexer state, readonly.
marker: Position of the latest token match, readonly.
cursor: Current input offset, readonly.

Parle\RLexer::advance — Process next lexer rule
Parle\RLexer::build — Finalize the lexer rule set
Parle\RLexer::callout — Define token callback
Parle\RLexer::consume — Pass the data for processing
Parle\RLexer::dump — Dump the state machine
Parle\RLexer::getToken — Retrieve the current token
Parle\RLexer::insertMacro — Insert regex macro
Parle\RLexer::push — Add a lexer rule
Parle\RLexer::pushState — Push a new start state
Parle\RLexer::reset — Reset lexer

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The Parle\RLexer class

簡(jiǎn)介

類(lèi)摘要

預定義常量

屬性

目錄