The Parle\RLexer class

    (PECL parle >= 0.5.1)

    Introduction

    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.

    Class synopsis

    classParle\RLexer {
    constintICASE = 1;
    constintDOT_NOT_LF = 2;
    constintDOT_NOT_CRLF = 4;
    constintSKIP_WS = 8;
    constintMATCH_ZERO_LEN = 16;
    publicbool$bol = false;
    publicint$flags = 0;
    publicint$state = 0;
    publicint$marker = 0;
    publicint$cursor = 0;
    publicadvance(): void
    publicbuild(): void
    publiccallout(int$id, callable$callback): void
    publicconsume(string$data): void
    publicdump(): void
    publicgetToken(): Parle\Token
    publicinsertMacro(string$name, string$regex): void
    publicpush(string$regex, int$id): void
    publicpush(
        string$state,
        string$regex,
        int$id,
        string$newState
    ): void
    publicpush(string$state, string$regex, string$newState): void
    publicpushState(string$state): int
    publicreset(int$pos): void
    }

    Properties

    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.

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