DBIx::MyParsePP::Token

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DBIx::MyParsePP::TokeUser Contributed Perl DocumentaDBIx::MyParsePP::Token(3)



NAME
       DBIx::MyParsePP::Token - Lexical tokens extracted by
       DBIx::MyParsePP::Lexer

SYNOPSIS
       Please see the example under "DBIx::MyParsePP::Lexer"

METHODS
       "new($type, $value)" creates a new Token object.

       "type()" or "getType()" returns the type of the Token, as string.

       "value()" or "getValue()" returns the value of the Token.

       "setType($new_type)" and "setValue($new_value)" can be used to manipu-
       late the Token.

       "toString()" returns the value of the token, quoted if necessary, as
       it would appear in a SQL statement. A leading space is added for most
       tokens in order to facilitate chaining tokens into a larger statement.

TOKEN TYPES
       Token types are returned as strings, to avoid possible confusion
       between integer values of constants and tokens whose type is equal to
       their value. The following types are used by MySQL:

	       "IDENT", "IDENT_QUOTED" - database, table or field identifiers or portions thereof.

	       "TEXT_STRING", "NCHAR_STRING" - strings in the form ’aaa’ and N’aaa’

	       "HEX_NUM", "BIN_NUM" - numbers in the form x’ffff’ and b’010101’

	       "DECIMAL_NUM", "NUM", "LONG_NUM", "ULONGLONG_NUM" - integers of various lengths

	       "FLOAT_NUM" - floating-point numbers in scientific notation, e.g -32032.6809e+10

	       "UNDERSCORE_CHARSET" - charset modifier before literal string, eg. _utf8

	       "LEX_HOSTNAME" -

	       "SET_VAR" - the variable assignment operator :=

       Function names and SQL constructs are returned mostly as strings end-
       ing in "_SYM"". The complete list can be found in
       "DBIx::MyParsePP::Symbols". Some functions are returned as
       "FUNC_ARG1", "FUNC_ARG2" or "FUNC_ARG3", signifying the number of
       arguments the function expects. In this case, the actual name of the
       function can be obtained by calling "getValue()".

       The rules that determine which type of "NUM" is returned can be found
       in "DBIx::MyParsePP::Lexer::int_token()"



perl v5.8.8			  2007-08-15	    DBIx::MyParsePP::Token(3)