Tài liệu Embedding Perl in HTML with Mason Chapter 6: The Lexer, Compiler, Resolver, and Interpreter Objects doc

... components in ways that match your intentions. In this chapter we'll discuss four of the persistent objects in the Mason framework: the Interpreter, Resolver, Lexer, and Compiler. These objects ... so on. The Lexer is responsible for actually processing the component source code and finding the Mason directives within it. It interacts quite closely...

Ngày tải lên: 14/12/2013, 12:15

... users is the following, put in the httpd.conf for the site: PerlModule HTML: :Mason: :ApacheHandler <LocationMatch "\ .html$ "> SetHandler perl- script PerlHandler HTML: :Mason: :ApacheHandler ... the CPAN.pm module to help automate the process. In this case, you can start the CPAN shell with the command perl -MCPAN -e shell, and then type...

Ngày tải lên: 14/12/2013, 12:15

... called by the ApacheHandler or CGIHandler modules provided with Mason. The Interpreter asks the Resolver to fetch the requested component from the filesystem. Then the Interpreter asks the Compiler ... equivalent to a bunch of Perl lines in a row. It begins with the start tag < %perl& gt; and ends with the end tag </ %perl& gt;. The contents of the...

Ngày tải lên: 14/12/2013, 12:15

... any other block (including an <%init> block). Any variables declared here remain in existence (and in scope) until the component is flushed from memory or the Perl interpreter running Mason ... the curious, these issues are covered in Chapter 3 , Chapter 5, and Chapter 12 . Return. 2. The percent sign (%) must occur at the beginning of the line. Retur...

Ngày tải lên: 14/12/2013, 12:15

... no filtering is necessary. Inspecting the Wrapping Chain When Mason processes a request, it builds the wrapping chain and then executes each component in the chain, starting with the topmost ... caring whether the article had its own component file or whether it was generated by the dhandler. Remember, autohandlers and dhandlers are distinct features in Mason,...

Ngày tải lên: 14/12/2013, 12:15

... get some information about the components in a request. Using some of these methods requires an understanding of autohandlers and the wrapping chain, a topic that was covered in Chapter 3 . ... and including, the current component. The first element of the array will be the current component and the last will be the first component in the stack. If this met...

Ngày tải lên: 14/12/2013, 12:15

... using Mason under mod _perl with the HTML: :Mason: :ApacheHandler class, which is covered in Chapter 7 , the Request object will contain several additional methods. • ah This method returns the ... covered in Chapter 7 . Methods Available When Using ApacheHandler or CGIHandler Two additional request methods are available when using the HTML: :Mason: :ApacheHandler...

Ngày tải lên: 14/12/2013, 12:15

... Mason directive that defines one component from within another. The component embedded within the <%def> block is called a subcomponent , and it is visible only to the component within ... SELF:title method. The title method invoked is the one contained in /your_order .html. 3. The /your_order .html: title method runs, and the value of the $order_date is stil...

Ngày tải lên: 14/12/2013, 12:15

... for other.mas first in the main component root, then in the utils root. It makes no difference whether the component call is done by using the component path other.mas or /dir/other.mas; the ... into the latter by prepending the /dir/top_level.mas's dir_path. If there are two components with the same path in the main and util roots, you won't be able...

Ngày tải lên: 14/12/2013, 12:15

... then tell mod _perl to use Mason as a PerlContentHandler . Here is the simplest possible configuration: SetHandler perl- script PerlHandler HTML: :Mason: :ApacheHandler The SetHandler directive ... using Apache 1.3.x and mod _perl 1.22 or greater. In addition, your mod _perl should have been compiled with PERL_ METHOD_HANDLERS=1 and PERL_ TABLE_API=1, or with EVE...

Ngày tải lên: 14/12/2013, 12:15