Abstract syntax tree library used for XP Compiler.
use lang\ast\{Language, Tokens}; $tree= Language::named('PHP')->parse(new Tokens('echo PHP_VERSION;'))->tree(); // lang.ast.ParseTree(source: (string))@{ // scope => lang.ast.Scope { // parent => null // package => null // imports => [] // types => [] // } // children => [lang.ast.nodes.EchoStatement { // kind => "echo" // expressions => [lang.ast.nodes.Literal { // kind => "literal" // expression => "PHP_VERSION" // line => 1 // }] // line => 1 // }] // }Register transformations by creating classes inside the lang.ast.syntax.php package - see xp-framework/rfc#327
namespace lang\ast\syntax\php; use lang\ast\Code; use lang\ast\nodes\{Method, Signature}; use lang\ast\syntax\Extension; use codegen\Getters; class CreateGetters implements Extension { public function setup($language, $emitter) { $emitter->transform('class', function($codegen, $class) { if ($class->annotation(Getters::class)) { foreach ($class->properties() as $property) { $class->declare(new Method( ['public'], $property->name, new Signature([], $property->type), [new Code('return $this->'.$property->name)] )); } } return $class; }); } }When compiling the following sourcecode, getters for the id and name members will automatically be added.
use codegen\Getters; #[Getters] class Person { private int $id; private string $name; public function __construct(int $id, string $name) { $this->id= $id; $this->name= $name; } }