81 lines
2.6 KiB
Markdown
81 lines
2.6 KiB
Markdown
|
Code generation
|
||
|
|
===============
|
||
|
|
|
||
|
|
It is also possible to generate code using the parser, by first creating an Abstract Syntax Tree and then using the
|
||
|
|
pretty printer to convert it to PHP code. To simplify code generation, the project comes with builders which allow
|
||
|
|
creating node trees using a fluid interface, instead of instantiating all nodes manually. Builders are available for
|
||
|
|
the following syntactic elements:
|
||
|
|
|
||
|
|
* namespaces and use statements
|
||
|
|
* classes, interfaces and traits
|
||
|
|
* methods, functions and parameters
|
||
|
|
* properties
|
||
|
|
|
||
|
|
Here is an example:
|
||
|
|
|
||
|
|
```php
|
||
|
|
<?php
|
||
|
|
$factory = new PhpParser\BuilderFactory;
|
||
|
|
$node = $factory->namespace('Name\Space')
|
||
|
|
->addStmt($factory->use('Some\Other\Thingy')->as('SomeOtherClass'))
|
||
|
|
->addStmt($factory->class('SomeClass')
|
||
|
|
->extend('SomeOtherClass')
|
||
|
|
->implement('A\Few', '\Interfaces')
|
||
|
|
->makeAbstract() // ->makeFinal()
|
||
|
|
|
||
|
|
->addStmt($factory->method('someMethod')
|
||
|
|
->makePublic()
|
||
|
|
->makeAbstract() // ->makeFinal()
|
||
|
|
->addParam($factory->param('someParam')->setTypeHint('SomeClass'))
|
||
|
|
->setDocComment('/**
|
||
|
|
* This method does something.
|
||
|
|
*
|
||
|
|
* @param SomeClass And takes a parameter
|
||
|
|
*/')
|
||
|
|
)
|
||
|
|
|
||
|
|
->addStmt($factory->method('anotherMethod')
|
||
|
|
->makeProtected() // ->makePublic() [default], ->makePrivate()
|
||
|
|
->addParam($factory->param('someParam')->setDefault('test'))
|
||
|
|
// it is possible to add manually created nodes
|
||
|
|
->addStmt(new PhpParser\Node\Expr\Print_(new PhpParser\Node\Expr\Variable('someParam')))
|
||
|
|
)
|
||
|
|
|
||
|
|
// properties will be correctly reordered above the methods
|
||
|
|
->addStmt($factory->property('someProperty')->makeProtected())
|
||
|
|
->addStmt($factory->property('anotherProperty')->makePrivate()->setDefault(array(1, 2, 3)))
|
||
|
|
)
|
||
|
|
|
||
|
|
->getNode()
|
||
|
|
;
|
||
|
|
|
||
|
|
$stmts = array($node);
|
||
|
|
$prettyPrinter = new PhpParser\PrettyPrinter\Standard();
|
||
|
|
echo $prettyPrinter->prettyPrintFile($stmts);
|
||
|
|
```
|
||
|
|
|
||
|
|
This will produce the following output with the standard pretty printer:
|
||
|
|
|
||
|
|
```php
|
||
|
|
<?php
|
||
|
|
|
||
|
|
namespace Name\Space;
|
||
|
|
|
||
|
|
use Some\Other\Thingy as SomeClass;
|
||
|
|
abstract class SomeClass extends SomeOtherClass implements A\Few, \Interfaces
|
||
|
|
{
|
||
|
|
protected $someProperty;
|
||
|
|
private $anotherProperty = array(1, 2, 3);
|
||
|
|
/**
|
||
|
|
* This method does something.
|
||
|
|
*
|
||
|
|
* @param SomeClass And takes a parameter
|
||
|
|
*/
|
||
|
|
public abstract function someMethod(SomeClass $someParam);
|
||
|
|
protected function anotherMethod($someParam = 'test')
|
||
|
|
{
|
||
|
|
print $someParam;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
```
|