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MicroMason::Functions(User Contributed Perl DocumentatMicroMason::Functions(3)

NAME
       Text::MicroMason::Functions - Function Exporter for Simple Mason
       Templates

SYNOPSIS
       Use the execute function	to parse and evalute a template:

	   use Text::MicroMason::Functions qw( execute );
	   print execute($template, 'name'=>'Dave');

       Or compile it into a subroutine,	and evaluate repeatedly:

	   use Text::MicroMason::Functions qw( compile );
	   $coderef = compile($template);
	   print $coderef->('name'=>'Dave');
	   print $coderef->('name'=>'Bob');

       Templates stored	in files can be	run directly or	included in others:

	   use Text::MicroMason::Functions qw( execute_file );
	   print execute_file( "./greeting.msn", 'name'=>'Charles');

       Safe usage restricts templates from accessing your files	or data:

	   use Text::MicroMason::Functions qw( safe_execute );
	   print safe_execute( $template, 'name'=>'Bob');

       All above functions are available in an error-catching "try_*" form:

	   use Text::MicroMason::Functions qw( try_execute );
	   ($result, $error) = try_execute( $template, 'name'=>'Alice');

DESCRIPTION
       As an alternative to the	object-oriented	interface, text	containing
       MicroMason markup code can be compiled and executed by calling the
       following functions.

       Please note that	this interface is maintained primarily for backward
       compatibility with version 1 of Text::MicroMason, and it	does not
       provide access to some of the newer features.

       Each function creates a new MicroMason object, including	any necessary
       traits such as Safe compilation or CatchErrors for exceptions, and then
       passes its arguments to an appropriate method on	that object.

       You may import any of these functions by	including their	names in your
       "use Text::MicroMason" statement.

   Basic Invocation
       To evaluate a Mason-like	template, pass it to execute():

	 $result = execute( $mason_text	);

       Alternately, you	can call compile() to generate a subroutine for	your
       template, and then run the subroutine:

	 $result = compile( $mason_text	)->();

       If you will be interpreting the same template repeatedly, you can save
       the compiled version for	faster execution:

	 $sub_ref = compile( $mason_text );
	 $result = $sub_ref->();

       (Note that the $sub_ref->() syntax is unavailable in older versions of
       Perl; use the equivalent	&$sub_ref() syntax instead.)

   Argument Passing
       You can also pass a list	of key-value pairs as arguments	to execute, or
       to the compiled subroutine:

	 $result = execute( $mason_text, %args );

	 $result = $sub_ref->( %args );

       Within the scope	of your	template, any arguments	that were provided
       will be accessible in the global	@_, the	%ARGS hash, and	any variables
       named in	an %args block.

       For example, the	below calls will all return '<b>Foo</b>':

	 execute('<b><%	shift(@_) %></b>', 'Foo');
	 execute('<b><%	$ARGS{label} %></b>', label=>'Foo');
	 execute('<%args>$label</%args><b><% $label %></b>', label=>'Foo');

   Template Files
       A parallel set of functions exist to handle templates which are stored
       in a file:

	 $template = compile_file( './report_tmpl.msn' );
	 $result = $template->(	%args );

	 $result = execute_file( './report_tmpl.msn', %args );

       Template	documents are just plain text files that contains the string
       to be parsed. The files may have	any name you wish, and the .msn
       extension shown above is	not required.

   Error Checking
       Both compilation	and run-time errors in your template are handled as
       fatal exceptions. The provided try_execute() and	try_compile()
       functions use a mixin class which wraps an eval { } block around	the
       basic execute() or compile() methods. In	a scalar context they return
       the result of the call, or undef	if it failed; in a list	context	they
       return the results of the call (undef if	it failed) followed by the
       error message (undef if it succeeded).  For example:

	 ($result, $error) = try_execute( $mason_text );
	 if ( !	$error ) {
	   print $result;
	 } else	{
	   print "Unable to execute template: $error";
	 }

       A matching pair of try_*_file() wrappers	are available to catch run-
       time errors in reading a	file or	parsing	its contents:

	 ($template, $error) = try_compile_file( './report_tmpl.msn' );

	 ($result, $error) = try_execute_file( './report_tmpl.msn', %args );

       For more	information, see Text::MicroMason::CatchErrors.

   Safe	Compartments
       If you wish to restrict the operations that a template can perform, use
       the safe_compile() and safe_execute() functions,	or their try_*()
       wrappers.

       For more	information, see Text::MicroMason::Safe.

SEE ALSO
       For an overview of this templating framework, see Text::MicroMason.

       For distribution, installation, support,	copyright and license
       information, see	Text::MicroMason::Docs::ReadMe.

perl v5.32.1			  2007-01-29	      MicroMason::Functions(3)

NAME | SYNOPSIS | DESCRIPTION | SEE ALSO

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