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.IX Title "DBIx::MyParsePP::Token 3"
.TH DBIx::MyParsePP::Token 3 "2007-08-15" "perl v5.8.8" "User Contributed Perl Documentation"
.SH "NAME"
DBIx::MyParsePP::Token \- Lexical tokens extracted by DBIx::MyParsePP::Lexer
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
Please see the example under \f(CW\*(C`DBIx::MyParsePP::Lexer\*(C'\fR
.SH "METHODS"
.IX Header "METHODS"
\&\f(CW\*(C`new($type, $value)\*(C'\fR creates a new Token object.
.PP
\&\f(CW\*(C`type()\*(C'\fR or \f(CW\*(C`getType()\*(C'\fR returns the type of the Token, as string.
.PP
\&\f(CW\*(C`value()\*(C'\fR or \f(CW\*(C`getValue()\*(C'\fR returns the value of the Token.
.PP
\&\f(CW\*(C`setType($new_type)\*(C'\fR and \f(CW\*(C`setValue($new_value)\*(C'\fR can be used to manipulate the Token.
.PP
\&\f(CW\*(C`toString()\*(C'\fR returns the value of the token, quoted if necessary, as it would appear in a \s-1SQL\s0 statement. A leading
space is added for most tokens in order to facilitate chaining tokens into a larger statement.
.SH "TOKEN TYPES"
.IX Header "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:
.PP
.Vb 1
\&        "IDENT", "IDENT_QUOTED" - database, table or field identifiers or portions thereof.
.Ve
.PP
.Vb 1
\&        "TEXT_STRING", "NCHAR_STRING" - strings in the form 'aaa' and N'aaa'
.Ve
.PP
.Vb 1
\&        "HEX_NUM", "BIN_NUM" - numbers in the form x'ffff' and b'010101'
.Ve
.PP
.Vb 1
\&        "DECIMAL_NUM", "NUM", "LONG_NUM", "ULONGLONG_NUM" - integers of various lengths
.Ve
.PP
.Vb 1
\&        "FLOAT_NUM" - floating-point numbers in scientific notation, e.g -32032.6809e+10
.Ve
.PP
.Vb 1
\&        "UNDERSCORE_CHARSET" - charset modifier before literal string, eg. _utf8
.Ve
.PP
.Vb 1
\&        "LEX_HOSTNAME" -
.Ve
.PP
.Vb 1
\&        "SET_VAR" - the variable assignment operator :=
.Ve
.PP
Function names and \s-1SQL\s0 constructs are returned mostly as strings ending in \f(CW\*(C`_SYM"\*(C'\fR. The complete list can be found in
\&\f(CW\*(C`DBIx::MyParsePP::Symbols\*(C'\fR. Some functions are returned as \f(CW"FUNC_ARG1"\fR, \f(CW"FUNC_ARG2"\fR or \f(CW"FUNC_ARG3"\fR, signifying
the number of arguments the function expects. In this case, the actual name of the function can be obtained by calling
\&\f(CW\*(C`getValue()\*(C'\fR.
.PP
The rules that determine which type of \f(CW"NUM"\fR is returned can be found in \f(CW\*(C`DBIx::MyParsePP::Lexer::int_token()\*(C'\fR